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Posted to commits@cloudstack.apache.org by jz...@apache.org on 2013/01/11 22:02:57 UTC
[38/52] [partial] CLOUDSTACK-961: Added dependencies for building
RPMs.
http://git-wip-us.apache.org/repos/asf/incubator-cloudstack/blob/92d4b214/docs/tmp/en-US/html/multi_node_management_server.html
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>9.4. Multi-Node Management Server</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Installation_Guide-4.0.1-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Installation Guide" /><link rel="up" href="choosing-a-deployment_architecture.html" title="Chapter 9. Choosing a Deployment Architecture" /><link rel="prev" href="separate_storage_network.html" title="9.3. Separate Storage Network" /><link rel="next" href="multi_site_deployment.html" title="9.5. Multi-Site Deployment" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site
" /></a><a class="right" href="http://docs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="separate_storage_network.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="multi_site_deployment.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="multi_node_management_server" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="multi_node_management_server">9.4. Multi-Node Management Server</h2></div></div></div><div class="para">
+ The CloudStack Management Server is deployed on one or more front-end servers connected to a single MySQL database. Optionally a pair of hardware load balancers distributes requests from the web. A backup management server set may be deployed using MySQL replication at a remote site to add DR capabilities.
+ </div><div class="mediaobject"><img src="./images/multi-node-management-server.png" width="444" alt="Multi-Node Management Server" /></div><div class="para">
+ The administrator must decide the following.
+ </div><div class="itemizedlist"><ul><li class="listitem"><div class="para">
+ Whether or not load balancers will be used.
+ </div></li><li class="listitem"><div class="para">
+ How many Management Servers will be deployed.
+ </div></li><li class="listitem"><div class="para">
+ Whether MySQL replication will be deployed to enable disaster recovery.
+ </div></li></ul></div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="separate_storage_network.html"><strong>Prev</strong>9.3. Separate Storage Network</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="multi_site_deployment.html"><strong>Next</strong>9.5. Multi-Site Deployment</a></li></ul></body></html>
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>9.5. Multi-Site Deployment</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Installation_Guide-4.0.1-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Installation Guide" /><link rel="up" href="choosing-a-deployment_architecture.html" title="Chapter 9. Choosing a Deployment Architecture" /><link rel="prev" href="multi_node_management_server.html" title="9.4. Multi-Node Management Server" /><link rel="next" href="aws-interface-compatibility.html" title="Chapter 10. Amazon Web Service Interface Compatibility" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/imag
es/image_left.png" alt="Product Site" /></a><a class="right" href="http://docs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="multi_node_management_server.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="aws-interface-compatibility.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="multi_site_deployment" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="multi_site_deployment">9.5. Multi-Site Deployment</h2></div></div></div><div class="para">
+ The CloudStack platform scales well into multiple sites through the use of zones. The following diagram shows an example of a multi-site deployment.
+ </div><div class="mediaobject"><img src="./images/multi-site-deployment.png" width="444" alt="Example Of A Multi-Site Deployment" /></div><div class="para">
+ Data Center 1 houses the primary Management Server as well as zone 1. The MySQL database is replicated in real time to the secondary Management Server installation in Data Center 2.
+ </div><div class="mediaobject"><img src="./images/separate-storage-network.png" width="444" alt="Separate Storage Network" /></div><div class="para">
+ This diagram illustrates a setup with a separate storage network. Each server has four NICs, two connected to pod-level network switches and two connected to storage network switches.
+ </div><div class="para">
+ There are two ways to configure the storage network:
+ </div><div class="itemizedlist"><ul><li class="listitem"><div class="para">
+ Bonded NIC and redundant switches can be deployed for NFS. In NFS deployments, redundant switches and bonded NICs still result in one network (one CIDR block+ default gateway address).
+ </div></li><li class="listitem"><div class="para">
+ iSCSI can take advantage of two separate storage networks (two CIDR blocks each with its own default gateway). Multipath iSCSI client can failover and load balance between separate storage networks.
+ </div></li></ul></div><div class="mediaobject"><img src="./images/nic-bonding-and-multipath-io.png" width="444" alt="NIC Bonding And Multipath I/O" /></div><div class="para">
+ This diagram illustrates the differences between NIC bonding and Multipath I/O (MPIO). NIC bonding configuration involves only one network. MPIO involves two separate networks.
+ </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="multi_node_management_server.html"><strong>Prev</strong>9.4. Multi-Node Management Server</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="aws-interface-compatibility.html"><strong>Next</strong>Chapter 10. Amazon Web Service Interface Compatib...</a></li></ul></body></html>
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>16.2. Multiple System VM Support for VMware</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Admin_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Administrator's Guide" /><link rel="up" href="working-with-system-vm.html" title="Chapter 16. Working with System Virtual Machines" /><link rel="prev" href="system-vm-template.html" title="16.1. The System VM Template" /><link rel="next" href="console-proxy.html" title="16.3. Console Proxy" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right"
href="http://docs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="system-vm-template.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="console-proxy.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="multiple-system-vm-vmware" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="multiple-system-vm-vmware">16.2. Multiple System VM Support for VMware</h2></div></div></div><div class="para">
+ Every CloudStack zone has single System VM for template processing tasks such as downloading templates, uploading templates, and uploading ISOs. In a zone where VMware is being used, additional System VMs can be launched to process VMware-specific tasks such as taking snapshots and creating private templates. The CloudStack management server launches additional System VMs for VMware-specific tasks as the load increases. The management server monitors and weights all commands sent to these System VMs and performs dynamic load balancing and scaling-up of more System VMs.
+ </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="system-vm-template.html"><strong>Prev</strong>16.1. The System VM Template</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="console-proxy.html"><strong>Next</strong>16.3. Console Proxy</a></li></ul></body></html>
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>9.4. Network Offerings</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Admin_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Administrator's Guide" /><link rel="up" href="set-up-network-for-users.html" title="Chapter 9. Setting Up Networking for Users" /><link rel="prev" href="network-service-providers.html" title="9.3. Network Service Providers" /><link rel="next" href="virtual-machines.html" title="Chapter 10. Working With Virtual Machines" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a clas
s="right" href="http://docs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="network-service-providers.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="virtual-machines.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="network-offerings" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="network-offerings">9.4. Network Offerings</h2></div></div></div><div class="note"><div class="admonition_header"><h2>Note</h2></div><div class="admonition"><div class="para">
+ For the most up-to-date list of supported network services, see the CloudStack UI or call listNetworkServices.
+ </div></div></div><div class="para">
+ A network offering is a named set of network services, such as:
+ </div><div class="itemizedlist"><ul><li class="listitem"><div class="para">
+ DHCP
+ </div></li><li class="listitem"><div class="para">
+ DNS
+ </div></li><li class="listitem"><div class="para">
+ Source NAT
+ </div></li><li class="listitem"><div class="para">
+ Static NAT
+ </div></li><li class="listitem"><div class="para">
+ Port Forwarding
+ </div></li><li class="listitem"><div class="para">
+ Load Balancing
+ </div></li><li class="listitem"><div class="para">
+ Firewall
+ </div></li><li class="listitem"><div class="para">
+ VPN
+ </div></li><li class="listitem"><div class="para">
+ Optional) Name one of several available providers to use for a given service, such as Juniper for the firewall
+ </div></li><li class="listitem"><div class="para">
+ (Optional) Network tag to specify which physical network to use
+ </div></li></ul></div><div class="para">
+ When creating a new VM, the user chooses one of the available network offerings, and that determines which network services the VM can use.
+ </div><div class="para">
+ The CloudStack administrator can create any number of custom network offerings, in addition to the default network offerings provided by CloudStack. By creating multiple custom network offerings, you can set up your cloud to offer different classes of service on a single multi-tenant physical network. For example, while the underlying physical wiring may be the same for two tenants, tenant A may only need simple firewall protection for their website, while tenant B may be running a web server farm and require a scalable firewall solution, load balancing solution, and alternate networks for accessing the database backend.
+ </div><div class="note"><div class="admonition_header"><h2>Note</h2></div><div class="admonition"><div class="para">
+ If you create load balancing rules while using a network service offering that includes an external load balancer device such as NetScaler, and later change the network service offering to one that uses the CloudStack virtual router, you must create a firewall rule on the virtual router for each of your existing load balancing rules so that they continue to function.
+ </div></div></div><div class="para">
+ When creating a new virtual network, the CloudStack administrator chooses which network offering to enable for that network. Each virtual network is associated with one network offering. A virtual network can be upgraded or downgraded by changing its associated network offering. If you do this, be sure to reprogram the physical network to match.
+ </div><div class="para">
+ CloudStack also has internal network offerings for use by CloudStack system VMs. These network offerings are not visible to users but can be modified by administrators.
+ </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="network-service-providers.html"><strong>Prev</strong>9.3. Network Service Providers</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="virtual-machines.html"><strong>Next</strong>Chapter 10. Working With Virtual Machines</a></li></ul></body></html>
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>9.3. Network Service Providers</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Admin_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Administrator's Guide" /><link rel="up" href="set-up-network-for-users.html" title="Chapter 9. Setting Up Networking for Users" /><link rel="prev" href="about-virtual-networks.html" title="9.2. About Virtual Networks" /><link rel="next" href="network-offerings.html" title="9.4. Network Offerings" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right" href="h
ttp://docs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="about-virtual-networks.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="network-offerings.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="network-service-providers" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="network-service-providers">9.3. Network Service Providers</h2></div></div></div><div class="note"><div class="admonition_header"><h2>Note</h2></div><div class="admonition"><div class="para">
+ For the most up-to-date list of supported network service providers, see the CloudStack UI or call listNetworkServiceProviders.
+ </div></div></div><div class="para">
+ A service provider (also called a network element) is hardware or virtual appliance that makes a network service possible; for example, a firewall appliance can be installed in the cloud to provide firewall service. On a single network, multiple providers can provide the same network service. For example, a firewall service may be provided by Cisco or Juniper devices in the same physical network.
+ </div><div class="para">
+ You can have multiple instances of the same service provider in a network (say, more than one Juniper SRX device).
+ </div><div class="para">
+ If different providers are set up to provide the same service on the network, the administrator can create network offerings so users can specify which network service provider they prefer (along with the other choices offered in network offerings). Otherwise, CloudStack will choose which provider to use whenever the service is called for.
+ </div><div class="formalpara"><h5 class="formalpara" id="idp23177648">Supported Network Service Providers</h5>
+ CloudStack ships with an internal list of the supported service providers, and you can choose from this list when creating a network offering.
+ </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="about-virtual-networks.html"><strong>Prev</strong>9.2. About Virtual Networks</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="network-offerings.html"><strong>Next</strong>9.4. Network Offerings</a></li></ul></body></html>
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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 12. Network Setup</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Installation_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Installation Guide" /><link rel="up" href="index.html" title="CloudStack Installation Guide" /><link rel="prev" href="aws-api-examples.html" title="11.7. Examples" /><link rel="next" href="basic-adv-networking.html" title="12.1. Basic and Advanced Networking" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right" href="http://docs.cloudstack.org"><img src="
Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="aws-api-examples.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="basic-adv-networking.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="chapter" id="network-setup" lang="en-US"><div class="titlepage"><div><div><h2 class="title">Chapter 12. Network Setup</h2></div></div></div><div class="toc"><dl><dt><span class="section"><a href="basic-adv-networking.html">12.1. Basic and Advanced Networking</a></span></dt><dt><span class="section"><a href="vlan-allocation-eg.html">12.2. VLAN Allocation Example</a></span></dt><dt><span class="section"><a href="hardware-config-eg.html">12.3. Example Hardware Configuration</a></span></dt><dd><dl><dt><span class="section"><a href="hardware-config-eg.html#dell62xx-hardware">12.3.1. Dell 62xx</a></span></dt><dt><span class="section"><a href="hardware-config-eg.html#cisco
3750-hardware">12.3.2. Cisco 3750</a></span></dt></dl></dd><dt><span class="section"><a href="layer2-switch.html">12.4. Layer-2 Switch</a></span></dt><dd><dl><dt><span class="section"><a href="layer2-switch.html#dell62xx-layer2">12.4.1. Dell 62xx</a></span></dt><dt><span class="section"><a href="layer2-switch.html#cisco3750-layer2">12.4.2. Cisco 3750</a></span></dt></dl></dd><dt><span class="section"><a href="hardware-firewall.html">12.5. Hardware Firewall</a></span></dt><dd><dl><dt><span class="section"><a href="hardware-firewall.html#generic-firewall-provisions">12.5.1. Generic Firewall Provisions</a></span></dt><dt><span class="section"><a href="hardware-firewall.html#external-guest-firewall-integration">12.5.2. External Guest Firewall Integration for Juniper SRX (Optional)</a></span></dt><dt><span class="section"><a href="hardware-firewall.html#external-guest-lb-integration">12.5.3. External Guest Load Balancer Integration (Optional)</a></span></dt></dl></dd><dt><span class="sec
tion"><a href="management-server-lb.html">12.6. Setting Zone VLAN and Running VM Maximums</a></span></dt><dt><span class="section"><a href="topology-req.html">12.7. Topology Requirements</a></span></dt><dd><dl><dt><span class="section"><a href="topology-req.html#security-req">12.7.1. Security Requirements</a></span></dt><dt><span class="section"><a href="topology-req.html#runtime-internal-comm-req">12.7.2. Runtime Internal Communications Requirements</a></span></dt><dt><span class="section"><a href="topology-req.html#storage-nw-topology-req">12.7.3. Storage Network Topology Requirements</a></span></dt><dt><span class="section"><a href="topology-req.html#external-fw-topology-req">12.7.4. External Firewall Topology Requirements</a></span></dt><dt><span class="section"><a href="topology-req.html#adv-zone-topology-req">12.7.5. Advanced Zone Topology Requirements</a></span></dt><dt><span class="section"><a href="topology-req.html#xenserver-topology-req">12.7.6. XenServer Topology Require
ments</a></span></dt><dt><span class="section"><a href="topology-req.html#vmware-topology-req">12.7.7. VMware Topology Requirements</a></span></dt><dt><span class="section"><a href="topology-req.html#kvm-topology-req">12.7.8. KVM Topology Requirements</a></span></dt></dl></dd><dt><span class="section"><a href="guest-nw-usage-with-traffic-sentinel.html">12.8. Guest Network Usage Integration for Traffic Sentinel</a></span></dt><dt><span class="section"><a href="set-zone-vlan-run-vm-max.html">12.9. Setting Zone VLAN and Running VM Maximums</a></span></dt></dl></div><div class="para">
+ Achieving the correct networking setup is crucial to a successful CloudStack installation. This section contains information to help you make decisions and follow the right procedures to get your network set up correctly.
+ </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="aws-api-examples.html"><strong>Prev</strong>11.7. Examples</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="basic-adv-networking.html"><strong>Next</strong>12.1. Basic and Advanced Networking</a></li></ul></body></html>
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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>11.2. Networking in a Pod</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Installation_Guide-4.0.1-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Installation Guide" /><link rel="up" href="networks.html" title="Chapter 11. Managing Networks and Traffic" /><link rel="prev" href="guest-traffic.html" title="11.1. Guest Traffic" /><link rel="next" href="networking-in-a-zone.html" title="11.3. Networking in a Zone" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right" href="http://docs.cloudstack.org"><
img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="guest-traffic.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="networking-in-a-zone.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="networking-in-a-pod" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="networking-in-a-pod">11.2. Networking in a Pod</h2></div></div></div><div class="para">
+ Figure 2 illustrates network setup within a single pod. The hosts are connected to a pod-level switch. At a minimum, the hosts should have one physical uplink to each switch. Bonded NICs are supported as well. The pod-level switch is a pair of redundant gigabit switches with 10 G uplinks.
+ </div><div class="mediaobject"><img src="./images/networking-in-a-pod.png" width="444" alt="networking-in-a-pod.png: Network setup in a pod" /></div><div class="para">
+ Servers are connected as follows:
+ </div><div class="itemizedlist"><ul><li class="listitem"><div class="para">
+ Storage devices are connected to only the network that carries management traffic.
+ </div></li><li class="listitem"><div class="para">
+ Hosts are connected to networks for both management traffic and public traffic.
+ </div></li><li class="listitem"><div class="para">
+ Hosts are also connected to one or more networks carrying guest traffic.
+ </div></li></ul></div><div class="para">
+ We recommend the use of multiple physical Ethernet cards to implement each network interface as well as redundant switch fabric in order to maximize throughput and improve reliability.
+ </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="guest-traffic.html"><strong>Prev</strong>11.1. Guest Traffic</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="networking-in-a-zone.html"><strong>Next</strong>11.3. Networking in a Zone</a></li></ul></body></html>
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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>11.3. Networking in a Zone</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Installation_Guide-4.0.1-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Installation Guide" /><link rel="up" href="networks.html" title="Chapter 11. Managing Networks and Traffic" /><link rel="prev" href="networking-in-a-pod.html" title="11.2. Networking in a Pod" /><link rel="next" href="basic-zone-physical-network-configuration.html" title="11.4. Basic Zone Physical Network Configuration" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /><
/a><a class="right" href="http://docs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="networking-in-a-pod.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="basic-zone-physical-network-configuration.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="networking-in-a-zone" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="networking-in-a-zone">11.3. Networking in a Zone</h2></div></div></div><div class="para">
+ Figure 3 illustrates the network setup within a single zone.
+ </div><div class="mediaobject"><img src="./images/networking-in-a-zone.png" width="444" alt="networking-in-a-zone.png: Network setup in a single zone" /></div><div class="para">
+ A firewall for management traffic operates in the NAT mode. The network typically is assigned IP addresses in the 192.168.0.0/16 Class B private address space. Each pod is assigned IP addresses in the 192.168.*.0/24 Class C private address space.
+ </div><div class="para">
+ Each zone has its own set of public IP addresses. Public IP addresses from different zones do not overlap.
+ </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="networking-in-a-pod.html"><strong>Prev</strong>11.2. Networking in a Pod</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="basic-zone-physical-network-configuration.html"><strong>Next</strong>11.4. Basic Zone Physical Network Configuration</a></li></ul></body></html>
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+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>9.1. Overview of Setting Up Networking for Users</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Admin_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Administrator's Guide" /><link rel="up" href="set-up-network-for-users.html" title="Chapter 9. Setting Up Networking for Users" /><link rel="prev" href="set-up-network-for-users.html" title="Chapter 9. Setting Up Networking for Users" /><link rel="next" href="about-virtual-networks.html" title="9.2. About Virtual Networks" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt
="Product Site" /></a><a class="right" href="http://docs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="set-up-network-for-users.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="about-virtual-networks.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="networks-for-users-overview" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="networks-for-users-overview">9.1. Overview of Setting Up Networking for Users</h2></div></div></div><div class="para">
+ People using cloud infrastructure have a variety of needs and preferences when it comes to the networking services provided by the cloud. As a CloudStack administrator, you can do the following things to set up networking for your users:
+ </div><div class="itemizedlist"><ul><li class="listitem"><div class="para">
+ Set up physical networks in zones
+ </div></li><li class="listitem"><div class="para">
+ Set up several different providers for the same service on a single physical network (for example, both Cisco and Juniper firewalls)
+ </div></li><li class="listitem"><div class="para">
+ Bundle different types of network services into network offerings, so users can choose the desired network services for any given virtual machine
+ </div></li><li class="listitem"><div class="para">
+ Add new network offerings as time goes on so end users can upgrade to a better class of service on their network
+ </div></li><li class="listitem"><div class="para">
+ Provide more ways for a network to be accessed by a user, such as through a project of which the user is a member
+ </div></li></ul></div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="set-up-network-for-users.html"><strong>Prev</strong>Chapter 9. Setting Up Networking for Users</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="about-virtual-networks.html"><strong>Next</strong>9.2. About Virtual Networks</a></li></ul></body></html>
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+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 11. Managing Networks and Traffic</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Installation_Guide-4.0.1-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Installation Guide" /><link rel="up" href="index.html" title="CloudStack Installation Guide" /><link rel="prev" href="aws-ec2-supported-commands.html" title="10.6. Supported AWS API Calls" /><link rel="next" href="guest-traffic.html" title="11.1. Guest Traffic" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right" href="http://docs.cloudsta
ck.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="aws-ec2-supported-commands.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="guest-traffic.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="chapter" id="networks" lang="en-US"><div class="titlepage"><div><div><h2 class="title">Chapter 11. Managing Networks and Traffic</h2></div></div></div><div class="toc"><dl><dt><span class="section"><a href="guest-traffic.html">11.1. Guest Traffic</a></span></dt><dt><span class="section"><a href="networking-in-a-pod.html">11.2. Networking in a Pod</a></span></dt><dt><span class="section"><a href="networking-in-a-zone.html">11.3. Networking in a Zone</a></span></dt><dt><span class="section"><a href="basic-zone-physical-network-configuration.html">11.4. Basic Zone Physical Network Configuration</a></span></dt><dt><span class="section"><a href="adva
nced-zone-physical-network-configuration.html">11.5. Advanced Zone Physical Network Configuration</a></span></dt><dd><dl><dt><span class="section"><a href="advanced-zone-physical-network-configuration.html#configure-guest-traffic-in-advanced-zone">11.5.1. Configure Guest Traffic in an Advanced Zone</a></span></dt><dt><span class="section"><a href="advanced-zone-physical-network-configuration.html#configure-public-traffic-in-an-advanced-zone">11.5.2. Configure Public Traffic in an Advanced Zone</a></span></dt></dl></dd><dt><span class="section"><a href="using-multiple-guest-networks.html">11.6. Using Multiple Guest Networks</a></span></dt><dd><dl><dt><span class="section"><a href="using-multiple-guest-networks.html#add-additional-guest-network">11.6.1. Adding an Additional Guest Network</a></span></dt><dt><span class="section"><a href="using-multiple-guest-networks.html#change-network-offering-on-guest-network">11.6.2. Changing the Network Offering on a Guest Network</a></span></dt><
/dl></dd><dt><span class="section"><a href="security-groups.html">11.7. Security Groups</a></span></dt><dd><dl><dt><span class="section"><a href="security-groups.html#about-security-groups">11.7.1. About Security Groups</a></span></dt><dt><span class="section"><a href="security-groups.html#add-security-group">11.7.2. Adding a Security Group</a></span></dt><dt><span class="section"><a href="security-groups.html#enable-security-groups">11.7.3. Enabling Security Groups</a></span></dt><dt><span class="section"><a href="security-groups.html#add-ingress-egress-rules">11.7.4. Adding Ingress and Egress Rules to a Security Group</a></span></dt></dl></dd><dt><span class="section"><a href="external-firewalls-and-load-balancers.html">11.8. External Firewalls and Load Balancers</a></span></dt><dt><span class="section"><a href="load-balancer-rules.html">11.9. Load Balancer Rules</a></span></dt><dt><span class="section"><a href="guest-ip-ranges.html">11.10. Guest IP Ranges</a></span></dt><dt><span
class="section"><a href="acquire-new-ip-address.html">11.11. Acquiring a New IP Address</a></span></dt><dt><span class="section"><a href="release-ip-address.html">11.12. Releasing an IP Address</a></span></dt><dt><span class="section"><a href="static-nat.html">11.13. Static NAT</a></span></dt><dt><span class="section"><a href="ip-forwarding-firewalling.html">11.14. IP Forwarding and Firewalling</a></span></dt><dt><span class="section"><a href="ip-load-balancing.html">11.15. IP Load Balancing</a></span></dt><dt><span class="section"><a href="dns-dhcp.html">11.16. DNS and DHCP</a></span></dt><dt><span class="section"><a href="vpn.html">11.17. VPN</a></span></dt><dd><dl><dt><span class="section"><a href="vpn.html#configure-vpn">11.17.1. Configuring VPN</a></span></dt><dt><span class="section"><a href="vpn.html#using-vpn-with-windows">11.17.2. Using VPN with Windows</a></span></dt><dt><span class="section"><a href="vpn.html#using-vpn-with-mac">11.17.3. Using VPN with Mac OS X</a></span
></dt><dt><span class="section"><a href="vpn.html#site-to-site-vpn">11.17.4. Setting Up a Site-to-Site VPN Connection</a></span></dt></dl></dd><dt><span class="section"><a href="inter-vlan-routing.html">11.18. About Inter-VLAN Routing</a></span></dt><dt><span class="section"><a href="configure-vpc.html">11.19. Configuring a Virtual Private Cloud</a></span></dt><dd><dl><dt><span class="section"><a href="configure-vpc.html#vpc">11.19.1. About Virtual Private Clouds</a></span></dt><dt><span class="section"><a href="configure-vpc.html#add-vpc">11.19.2. Adding a Virtual Private Cloud</a></span></dt><dt><span class="section"><a href="configure-vpc.html#add-tier">11.19.3. Adding Tiers</a></span></dt><dt><span class="section"><a href="configure-vpc.html#configure-acl">11.19.4. Configuring Access Control List</a></span></dt><dt><span class="section"><a href="configure-vpc.html#add-gateway-vpc">11.19.5. Adding a Private Gateway to a VPC</a></span></dt><dt><span class="section"><a href="config
ure-vpc.html#add-vm-to-tier">11.19.6. Deploying VMs to the Tier</a></span></dt><dt><span class="section"><a href="configure-vpc.html#acquire-new-ip-for-vpc">11.19.7. Acquiring a New IP Address for a VPC</a></span></dt><dt><span class="section"><a href="configure-vpc.html#release-ip-for-vpc">11.19.8. Releasing an IP Address Alloted to a VPC</a></span></dt><dt><span class="section"><a href="configure-vpc.html#enable-disable-static-nat-vpc">11.19.9. Enabling or Disabling Static NAT on a VPC</a></span></dt><dt><span class="section"><a href="configure-vpc.html#add-loadbalancer-rule-vpc">11.19.10. Adding Load Balancing Rules on a VPC</a></span></dt><dt><span class="section"><a href="configure-vpc.html#add-portforward-vpc">11.19.11. Adding a Port Forwarding Rule on a VPC</a></span></dt><dt><span class="section"><a href="configure-vpc.html#remove-tier">11.19.12. Removing Tiers</a></span></dt><dt><span class="section"><a href="configure-vpc.html#remove-vpc">11.19.13. Editing, Restarting, and
Removing a Virtual Private Cloud</a></span></dt></dl></dd></dl></div><div class="para">
+ In a CloudStack, guest VMs can communicate with each other using shared infrastructure with the security and user perception that the guests have a private LAN. The CloudStack virtual router is the main component providing networking features for guest traffic.
+ </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="aws-ec2-supported-commands.html"><strong>Prev</strong>10.6. Supported AWS API Calls</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="guest-traffic.html"><strong>Next</strong>11.1. Guest Traffic</a></li></ul></body></html>
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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>4.1. Service Offerings, Disk Offerings, Network Offerings, and Templates</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Admin_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Administrator's Guide" /><link rel="up" href="user-services-overview.html" title="Chapter 4. User Services Overview" /><link rel="prev" href="user-services-overview.html" title="Chapter 4. User Services Overview" /><link rel="next" href="ui.html" title="Chapter 5. User Interface" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /><
/a><a class="right" href="http://docs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="user-services-overview.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="ui.html"><strong>Next</strong></a></li></ul><div class="section" id="offerings-and-templates"><div class="titlepage"><div><div><h2 class="title" id="offerings-and-templates">4.1. Service Offerings, Disk Offerings, Network Offerings, and Templates</h2></div></div></div><div class="para">
+ A user creating a new instance can make a variety of choices about its characteristics and capabilities. CloudStack provides several ways to present users with choices when creating a new instance:
+ </div><div class="itemizedlist"><ul><li class="listitem"><div class="para">
+ Service Offerings, defined by the CloudStack administrator, provide a choice of CPU speed, number of CPUs, RAM size, tags on the root disk, and other choices. See Creating a New Compute Offering.
+ </div></li><li class="listitem"><div class="para">
+ Disk Offerings, defined by the CloudStack administrator, provide a choice of disk size for primary data storage. See Creating a New Disk Offering.
+ </div></li><li class="listitem"><div class="para">
+ Network Offerings, defined by the CloudStack administrator, describe the feature set that is available to end users from the virtual router or external networking devices on a given guest network. See Network Offerings.
+ </div></li><li class="listitem"><div class="para">
+ Templates, defined by the CloudStack administrator or by any CloudStack user, are the base OS images that the user can choose from when creating a new instance. For example, CloudStack includes CentOS as a template. See Working with Templates.
+ </div></li></ul></div><div class="para">
+ In addition to these choices that are provided for users, there is another type of service offering which is available only to the CloudStack root administrator, and is used for configuring virtual infrastructure resources. For more information, see Upgrading a Virtual Router with System Service Offerings.
+ </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="user-services-overview.html"><strong>Prev</strong>Chapter 4. User Services Overview</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="ui.html"><strong>Next</strong>Chapter 5. User Interface</a></li></ul></body></html>
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 8. Service Offerings</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Admin_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Administrator's Guide" /><link rel="up" href="index.html" title="CloudStack Administrator's Guide" /><link rel="prev" href="initialize-and-test.html" title="7.8. Initialize and Test" /><link rel="next" href="compute-disk-service-offerings.html" title="8.1. Compute and Disk Service Offerings" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right" href="http://do
cs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="initialize-and-test.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="compute-disk-service-offerings.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="chapter" id="offerings" lang="en-US"><div class="titlepage"><div><div><h2 class="title">Chapter 8. Service Offerings</h2></div></div></div><div class="toc"><dl><dt><span class="section"><a href="compute-disk-service-offerings.html">8.1. Compute and Disk Service Offerings</a></span></dt><dd><dl><dt><span class="section"><a href="compute-disk-service-offerings.html#creating-compute-offerings">8.1.1. Creating a New Compute Offering</a></span></dt><dt><span class="section"><a href="compute-disk-service-offerings.html#creating-disk-offerings">8.1.2. Creating a New Disk Offering</a></span></dt><dt><span class="section"><a href="co
mpute-disk-service-offerings.html#modify-delete-service-offerings">8.1.3. Modifying or Deleting a Service Offering</a></span></dt></dl></dd><dt><span class="section"><a href="system-service-offerings.html">8.2. System Service Offerings</a></span></dt></dl></div><div class="para">
+ In this chapter we discuss compute, disk, and system service offerings. Network offerings are discussed in the section on setting up networking for users.
+ </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="initialize-and-test.html"><strong>Prev</strong>7.8. Initialize and Test</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="compute-disk-service-offerings.html"><strong>Next</strong>8.1. Compute and Disk Service Offerings</a></li></ul></body></html>
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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>14.5. Per-Domain Limits</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Admin_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Administrator's Guide" /><link rel="up" href="work-with-usage.html" title="Chapter 14. Working with Usage" /><link rel="prev" href="default-account-resource-limit.html" title="14.4. Default Account Resource Limits" /><link rel="next" href="networks.html" title="Chapter 15. Managing Networks and Traffic" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right" href="
http://docs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="default-account-resource-limit.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="networks.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="per-domain-limits" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="per-domain-limits">14.5. Per-Domain Limits</h2></div></div></div><div class="para">
+ CloudStack allows the configuration of limits on a domain basis. With a domain limit in place, all users still have their account limits. They are additionally limited, as a group, to not exceed the resource limits set on their domain. Domain limits aggregate the usage of all accounts in the domain as well as all accounts in all subdomains of that domain. Limits set at the root domain level apply to the sum of resource usage by the accounts in all domains and sub-domains below that root domain.
+ </div><div class="para">
+ To set a domain limit:
+ </div><div class="orderedlist"><ol><li class="listitem"><div class="para">
+ Log in to the CloudStack UI.
+ </div></li><li class="listitem"><div class="para">
+ In the left navigation tree, click Domains.
+ </div></li><li class="listitem"><div class="para">
+ Select the domain you want to modify. The current domain limits are displayed. A value of -1 shows that there is no limit in place.
+ </div></li><li class="listitem"><div class="para">
+ Click the Edit button
+ <span class="inlinemediaobject"><img src="./images/edit-icon.png" alt="editbutton.png: edits the settings." /></span>
+ </div></li></ol></div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="default-account-resource-limit.html"><strong>Prev</strong>14.4. Default Account Resource Limits</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="networks.html"><strong>Next</strong>Chapter 15. Managing Networks and Traffic</a></li></ul></body></html>
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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>21.1. Performance Monitoring</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Admin_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Administrator's Guide" /><link rel="up" href="tuning.html" title="Chapter 21. Tuning" /><link rel="prev" href="tuning.html" title="Chapter 21. Tuning" /><link rel="next" href="increase-management-server-max-memory.html" title="21.2. Increase Management Server Maximum Memory" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right" href="http://docs.cloudstack.o
rg"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="tuning.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="increase-management-server-max-memory.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="performance-monitoring" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="performance-monitoring">21.1. Performance Monitoring</h2></div></div></div><div class="para">
+ Host and guest performance monitoring is available to end users and administrators. This allows the user to monitor their utilization of resources and determine when it is appropriate to choose a more powerful service offering or larger disk.
+ </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="tuning.html"><strong>Prev</strong>Chapter 21. Tuning</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="increase-management-server-max-memory.html"><strong>Next</strong>21.2. Increase Management Server Maximum Memory</a></li></ul></body></html>
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>6.3. Adding a Pod</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Installation_Guide-4.0.1-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Installation Guide" /><link rel="up" href="provisioning-steps.html" title="Chapter 6. Steps to Provisioning Your Cloud Infrastructure" /><link rel="prev" href="zone-add.html" title="6.2. Adding a Zone" /><link rel="next" href="cluster-add.html" title="6.4. Adding a Cluster" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right" href="http://docs.cloudstack.org"><i
mg src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="zone-add.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="cluster-add.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="pod-add" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="pod-add">6.3. Adding a Pod</h2></div></div></div><div class="para">
+ When you created a new zone, CloudStack adds the first pod for you. You can add more pods at any time using the procedure in this section.
+ </div><div class="orderedlist"><ol><li class="listitem"><div class="para">
+ Log in to the CloudStack UI. See <a class="xref" href="log-in.html">Section 5.1, “Log In to the UI”</a>.
+ </div></li><li class="listitem"><div class="para">
+ In the left navigation, choose Infrastructure. In Zones, click View More, then click the zone to which you want to add a pod.
+ </div></li><li class="listitem"><div class="para">
+ Click the Compute and Storage tab. In the Pods node of the diagram, click View All.
+ </div></li><li class="listitem"><div class="para">
+ Click Add Pod.
+ </div></li><li class="listitem"><div class="para">
+ Enter the following details in the dialog.
+ </div><div class="itemizedlist"><ul><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Name.</strong></span> The name of the pod.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Gateway.</strong></span> The gateway for the hosts in that pod.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Netmask.</strong></span> The network prefix that defines the pod's subnet. Use CIDR notation.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Start/End Reserved System IP.</strong></span> The IP range in the management network that CloudStack uses to manage various system VMs, such as Secondary Storage VMs, Console Proxy VMs, and DHCP. For more information, see System Reserved IP Addresses.
+ </div></li></ul></div></li><li class="listitem"><div class="para">
+ Click OK.
+ </div></li></ol></div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="zone-add.html"><strong>Prev</strong>6.2. Adding a Zone</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="cluster-add.html"><strong>Next</strong>6.4. Adding a Cluster</a></li></ul></body></html>
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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>6.6. Add Primary Storage</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Installation_Guide-4.0.1-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Installation Guide" /><link rel="up" href="provisioning-steps.html" title="Chapter 6. Steps to Provisioning Your Cloud Infrastructure" /><link rel="prev" href="host-add.html" title="6.5. Adding a Host" /><link rel="next" href="secondary-storage-add.html" title="6.7. Add Secondary Storage" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right" href="http://d
ocs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="host-add.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="secondary-storage-add.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="primary-storage-add" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="primary-storage-add">6.6. Add Primary Storage</h2></div></div></div><div class="section" id="sys-require-primary-storage"><div class="titlepage"><div><div><h3 class="title" id="sys-require-primary-storage">6.6.1. System Requirements for Primary Storage</h3></div></div></div><div class="para">
+ Hardware requirements:
+ </div><div class="itemizedlist"><ul><li class="listitem"><div class="para">
+ Any standards-compliant iSCSI or NFS server that is supported by the underlying hypervisor.
+ </div></li><li class="listitem"><div class="para">
+ The storage server should be a machine with a large number of disks. The disks should ideally be managed by a hardware RAID controller.
+ </div></li><li class="listitem"><div class="para">
+ Minimum required capacity depends on your needs.
+ </div></li></ul></div><div class="para">
+ When setting up primary storage, follow these restrictions:
+ </div><div class="itemizedlist"><ul><li class="listitem"><div class="para">
+ Primary storage cannot be added until a host has been added to the cluster.
+ </div></li><li class="listitem"><div class="para">
+ If you do not provision shared primary storage, you must set the global configuration parameter system.vm.local.storage.required to true, or else you will not be able to start VMs.
+ </div></li></ul></div></div><div class="section" id="adding-primary-storage"><div class="titlepage"><div><div><h3 class="title" id="adding-primary-storage">6.6.2. Adding Primary Stroage</h3></div></div></div><div class="para">
+ When you create a new zone, the first primary storage is added as part of that procedure. You can add primary storage servers at any time, such as when adding a new cluster or adding more servers to an existing cluster.
+ </div><div class="warning"><div class="admonition_header"><h2>Warning</h2></div><div class="admonition"><div class="para">
+ Be sure there is nothing stored on the server. Adding the server to CloudStack will destroy any existing data.
+ </div></div></div><div class="orderedlist"><ol><li class="listitem"><div class="para">
+ Log in to the CloudStack UI (see <a class="xref" href="log-in.html">Section 5.1, “Log In to the UI”</a>).
+ </div></li><li class="listitem"><div class="para">
+ In the left navigation, choose Infrastructure. In Zones, click View More, then click the zone in which you want to add the primary storage.
+ </div></li><li class="listitem"><div class="para">
+ Click the Compute tab.
+ </div></li><li class="listitem"><div class="para">
+ In the Primary Storage node of the diagram, click View All.
+ </div></li><li class="listitem"><div class="para">
+ Click Add Primary Storage.
+ </div></li><li class="listitem"><div class="para">
+ Provide the following information in the dialog. The information required varies depending on your choice in Protocol.
+ </div><div class="itemizedlist"><ul><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Pod.</strong></span> The pod for the storage device.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Cluster.</strong></span> The cluster for the storage device.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Name.</strong></span> The name of the storage device.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Protocol.</strong></span> For XenServer, choose either NFS, iSCSI, or PreSetup. For KVM, choose NFS or SharedMountPoint. For vSphere choose either VMFS (iSCSI or FiberChannel) or NFS.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Server (for NFS, iSCSI, or PreSetup).</strong></span> The IP address or DNS name of the storage device.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Server (for VMFS).</strong></span> The IP address or DNS name of the vCenter server.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Path (for NFS).</strong></span> In NFS this is the exported path from the server.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Path (for VMFS).</strong></span> In vSphere this is a combination of the datacenter name and the datastore name. The format is "/" datacenter name "/" datastore name. For example, "/cloud.dc.VM/cluster1datastore".
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Path (for SharedMountPoint).</strong></span> With KVM this is the path on each host that is where this primary storage is mounted. For example, "/mnt/primary".
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>SR Name-Label (for PreSetup).</strong></span> Enter the name-label of the SR that has been set up outside CloudStack.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Target IQN (for iSCSI).</strong></span> In iSCSI this is the IQN of the target. For example, iqn.1986-03.com.sun:02:01ec9bb549-1271378984.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Lun # (for iSCSI).</strong></span> In iSCSI this is the LUN number. For example, 3.
+ </div></li><li class="listitem"><div class="para">
+ <span class="bold bold"><strong>Tags (optional).</strong></span> The comma-separated list of tags for this storage device. It should be an equivalent set or superset of the tags on your disk offerings..
+ </div></li></ul></div><div class="para">
+ The tag sets on primary storage across clusters in a Zone must be identical. For example, if cluster A provides primary storage that has tags T1 and T2, all other clusters in the Zone must also provide primary storage that has tags T1 and T2.
+ </div></li><li class="listitem"><div class="para">
+ Click OK.
+ </div></li></ol></div></div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="host-add.html"><strong>Prev</strong>6.5. Adding a Host</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="secondary-storage-add.html"><strong>Next</strong>6.7. Add Secondary Storage</a></li></ul></body></html>
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+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>17.4. Primary Storage Outage and Data Loss</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Admin_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Administrator's Guide" /><link rel="up" href="sys-reliability-and-ha.html" title="Chapter 17. System Reliability and High Availability" /><link rel="prev" href="ha-for-hosts.html" title="17.3. HA for Hosts" /><link rel="next" href="secondary-storage-outage-and-data-loss.html" title="17.5. Secondary Storage Outage and Data Loss" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="
Product Site" /></a><a class="right" href="http://docs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="ha-for-hosts.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="secondary-storage-outage-and-data-loss.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="primary-storage-outage-and-data-loss" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="primary-storage-outage-and-data-loss">17.4. Primary Storage Outage and Data Loss</h2></div></div></div><div class="para">
+ When a primary storage outage occurs the hypervisor immediately stops all VMs stored on that storage device. Guests that are marked for HA will be restarted as soon as practical when the primary storage comes back on line. With NFS, the hypervisor may allow the virtual machines to continue running depending on the nature of the issue. For example, an NFS hang will cause the guest VMs to be suspended until storage connectivity is restored.Primary storage is not designed to be backed up. Individual volumes in primary storage can be backed up using snapshots.
+ </div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="ha-for-hosts.html"><strong>Prev</strong>17.3. HA for Hosts</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="secondary-storage-outage-and-data-loss.html"><strong>Next</strong>17.5. Secondary Storage Outage and Data Loss</a></li></ul></body></html>
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>13.2. Primary Storage</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Admin_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Administrator's Guide" /><link rel="up" href="storage.html" title="Chapter 13. Working With Storage" /><link rel="prev" href="storage-overview.html" title="13.1. Storage Overview" /><link rel="next" href="secondary-storage.html" title="13.3. Secondary Storage" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right" href="http://docs.cloudstack.org"><img src="Common_Co
ntent/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="storage-overview.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="secondary-storage.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="primary-storage" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="primary-storage">13.2. Primary Storage</h2></div></div></div><div class="para">
+ This section gives concepts and technical details about CloudStack primary storage. For information about how to install and configure primary storage through the CloudStack UI, see the Installation Guide.
+ </div><div class="para">
+ <a class="xref" href="about-primary-storage.html">Section 2.5, “About Primary Storage”</a>
+ </div><div xml:lang="en-US" class="section" id="best-practices-primary-storage" lang="en-US"><div class="titlepage"><div><div><h3 class="title" id="best-practices-primary-storage">13.2.1. Best Practices for Primary Storage</h3></div></div></div><div class="itemizedlist"><ul><li class="listitem"><div class="para">
+ The speed of primary storage will impact guest performance. If possible, choose smaller, higher RPM drives for primary storage.
+ </div></li><li class="listitem"><div class="para">
+ Ensure that nothing is stored on the server. Adding the server to CloudStack will destroy any existing data
+ </div></li></ul></div></div><div xml:lang="en-US" class="section" id="runtime-behavior-of-primary-storage" lang="en-US"><div class="titlepage"><div><div><h3 class="title" id="runtime-behavior-of-primary-storage">13.2.2. Runtime Behavior of Primary Storage</h3></div></div></div><div class="para">
+ Root volumes are created automatically when a virtual machine is created. Root volumes are deleted when the VM is destroyed. Data volumes can be created and dynamically attached to VMs. Data volumes are not deleted when VMs are destroyed.
+ </div><div class="para">
+ Administrators should monitor the capacity of primary storage devices and add additional primary storage as needed. See the Advanced Installation Guide.
+ </div><div class="para">
+ Administrators add primary storage to the system by creating a CloudStack storage pool. Each storage pool is associated with a cluster.
+ </div></div><div xml:lang="en-US" class="section" id="hypervisor-support-for-primarystorage" lang="en-US"><div class="titlepage"><div><div><h3 class="title" id="hypervisor-support-for-primarystorage">13.2.3. Hypervisor Support for Primary Storage</h3></div></div></div><div class="para">
+ The following table shows storage options and parameters for different hypervisors.
+ </div><div class="informaltable"><table border="1"><colgroup><col width="33%" class="c1" /><col width="4cm" class="c2" /><col width="5cm" class="c3" /><col width="33%" class="c4" /><col width="33%" class="c5" /></colgroup><thead><tr><th>
+ </th><th>
+ <div class="para">
+ VMware vSphere
+ </div>
+ </th><th>
+ <div class="para">
+ Citrix XenServer
+ </div>
+ </th><th>
+ <div class="para">
+ KVM
+ </div>
+ </th><td class="auto-generated"> </td></tr></thead><tbody><tr><td>
+ <div class="para">
+ <span class="bold bold"><strong><span class="bold bold"><strong>Format for Disks, Templates, and Snapshots</strong></span></strong></span>
+ </div>
+ </td><td>
+ <div class="para">
+ VMDK
+ </div>
+ </td><td>
+ <div class="para">
+ VHD
+ </div>
+ </td><td>
+ <div class="para">
+ QCOW2
+ </div>
+ </td><td class="auto-generated"> </td></tr><tr><td>
+ <div class="para">
+ <span class="bold bold"><strong>iSCSI support</strong></span>
+ </div>
+ </td><td>
+ <div class="para">
+ VMFS
+ </div>
+ </td><td>
+ <div class="para">
+ Clustered LVM
+ </div>
+ </td><td>
+ <div class="para">
+ Yes, via Shared Mountpoint
+ </div>
+ </td><td class="auto-generated"> </td></tr><tr><td>
+ <div class="para">
+ <span class="bold bold"><strong>Fiber Channel support</strong></span>
+ </div>
+ </td><td>
+ <div class="para">
+ VMFS
+ </div>
+ </td><td>
+ <div class="para">
+ Yes, via Existing SR
+ </div>
+ </td><td>
+ <div class="para">
+ Yes, via Shared Mountpoint
+ </div>
+ </td><td class="auto-generated"> </td></tr><tr><td>
+ <div class="para">
+ <span class="bold bold"><strong>NFS support</strong></span>
+ </div>
+ </td><td>
+ <div class="para">
+ Y
+ </div>
+ </td><td>
+ <div class="para">
+ Y
+ </div>
+ </td><td>
+ <div class="para">
+ Y
+ </div>
+ </td><td class="auto-generated"> </td></tr><tr><td>
+ <div class="para">
+ <span class="bold bold"><strong>Local storage support</strong></span>
+ </div>
+ </td><td>
+ <div class="para">
+ Y
+ </div>
+ </td><td>
+ <div class="para">
+ Y
+ </div>
+ </td><td>
+ <div class="para">
+ Y
+ </div>
+ </td><td class="auto-generated"> </td></tr><tr><td>
+ <div class="para">
+ <span class="bold bold"><strong>Storage over-provisioning</strong></span>
+ </div>
+ </td><td>
+ <div class="para">
+ NFS and iSCSI
+ </div>
+ </td><td>
+ <div class="para">
+ NFS
+ </div>
+ </td><td>
+ <div class="para">
+ NFS
+ </div>
+ </td><td class="auto-generated"> </td></tr></tbody></table></div><div class="para">
+ XenServer uses a clustered LVM system to store VM images on iSCSI and Fiber Channel volumes and does not support over-provisioning in the hypervisor. The storage server itself, however, can support thin-provisioning. As a result the CloudStack can still support storage over-provisioning by running on thin-provisioned storage volumes.
+ </div><div class="para">
+ KVM supports "Shared Mountpoint" storage. A shared mountpoint is a file system path local to each server in a given cluster. The path must be the same across all Hosts in the cluster, for example /mnt/primary1. This shared mountpoint is assumed to be a clustered filesystem such as OCFS2. In this case the CloudStack does not attempt to mount or unmount the storage as is done with NFS. The CloudStack requires that the administrator insure that the storage is available
+ </div><div class="para">
+ With NFS storage, CloudStack manages the overprovisioning. In this case the global configuration parameter storage.overprovisioning.factor controls the degree of overprovisioning. This is independent of hypervisor type.
+ </div><div class="para">
+ Local storage is an option for primary storage for vSphere, XenServer, and KVM. When the local disk option is enabled, a local disk storage pool is automatically created on each host. To use local storage for the System Virtual Machines (such as the Virtual Router), set system.vm.use.local.storage to true in global configuration.
+ </div><div class="para">
+ CloudStack supports multiple primary storage pools in a Cluster. For example, you could provision 2 NFS servers in primary storage. Or you could provision 1 iSCSI LUN initially and then add a second iSCSI LUN when the first approaches capacity.
+ </div></div><div xml:lang="en-US" class="section" id="storage-tags" lang="en-US"><div class="titlepage"><div><div><h3 class="title" id="storage-tags">13.2.4. Storage Tags</h3></div></div></div><div class="para">
+ Storage may be "tagged". A tag is a text string attribute associated with primary storage, a Disk Offering, or a Service Offering. Tags allow administrators to provide additional information about the storage. For example, that is a "SSD" or it is "slow". Tags are not interpreted by CloudStack. They are matched against tags placed on service and disk offerings. CloudStack requires all tags on service and disk offerings to exist on the primary storage before it allocates root or data disks on the primary storage. Service and disk offering tags are used to identify the requirements of the storage that those offerings have. For example, the high end service offering may require "fast" for its root disk volume.
+ </div><div class="para">
+ The interaction between tags, allocation, and volume copying across clusters and pods can be complex. To simplify the situation, use the same set of tags on the primary storage for all clusters in a pod. Even if different devices are used to present those tags, the set of exposed tags can be the same.
+ </div></div><div xml:lang="en-US" class="section" id="maintenance-mode-for-primary-storage.xml" lang="en-US"><div class="titlepage"><div><div><h3 class="title" id="maintenance-mode-for-primary-storage.xml">13.2.5. Maintenance Mode for Primary Storage</h3></div></div></div><div class="para">
+ Primary storage may be placed into maintenance mode. This is useful, for example, to replace faulty RAM in a storage device. Maintenance mode for a storage device will first stop any new guests from being provisioned on the storage device. Then it will stop all guests that have any volume on that storage device. When all such guests are stopped the storage device is in maintenance mode and may be shut down. When the storage device is online again you may cancel maintenance mode for the device. The CloudStack will bring the device back online and attempt to start all guests that were running at the time of the entry into maintenance mode.
+ </div></div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="storage-overview.html"><strong>Prev</strong>13.1. Storage Overview</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="secondary-storage.html"><strong>Next</strong>13.3. Secondary Storage</a></li></ul></body></html>