Re: Help regarding cassandra node networking..

[Alain RODRIGUEZ <ar...@gmail.com>]

Hi,

A few comments as I read:


> I'm using node0 as seeder


It is recommended to use at least 2 nodes per DC as seeds, for fault
tolerance and good gossip propagation.

Also I think you are a bit confused about what a seed node is and is not.
See:
https://docs.datastax.com/en/cassandra/2.1/cassandra/architecture/architectureGossipAbout_c.html

I want to use the node0 as seeder and use the public ip so that i can
> access it remotely and can join with other Datacenter nodes later time. But
> my rest of the nodes should not have any public interfaces. Now how to
> configure it?


This does not look right to me. All the nodes must receive the same
operational care. It is a lot easier to reason about an homogeneous cluster
and I do not recommend this kind of approaches at all.

To use public IP on a node, set the broadcast_address to public IP, and
make sure ports are open on whatever IP address you are trying to connect
to.

Sorry for the month delay, hope this is still useful.

C*heers,
-----------------------
Alain Rodriguez - alain@thelastpickle.com
France

The Last Pickle - Apache Cassandra Consulting
http://www.thelastpickle.com

2016-06-06 9:27 GMT+02:00 sahriar rahman supto <su...@live.com>:

> I'm creating a cassandra cluster. I've three node with centos 7 and
> cassandra 3.4 installed.
>
> Node0 interfaces:
> eth0 169.254.169.xx1 (Public IP)
> eth1 192.168.56.101(Private IP)
>
> Node1 interfaces:
> eth0 169.254.169.xx2 (Public IP)
> eth1 192.168.56.102(Private IP)
>
> Node2 interfaces:
> eth0 169.254.169.xx3 (Public IP)
> eth1 192.168.56.103(Private IP)
>
> I'm using node0 as seeder. My cassandra.yaml Configuration files for each
> of the nodes are as follows:
>
> Node0:
> cluster_name: 'DB Cluster'
> seeds: "162.253.42.xx1"
> listen_address: 162.253.42.xx1
> rpc_address: 162.253.42.xx1
> endpoint_snitch: GossipingPropertyFileSnitch
>
> Node1:
> cluster_name: 'DB Cluster'
> seeds: "162.253.42.xx1"
> listen_address: 162.253.42.xx2
> rpc_address: 162.253.42.xx2
> endpoint_snitch: GossipingPropertyFileSnitch
>
> Node2:
> cluster_name: 'DB Cluster'
> seeds: "162.253.42.xx1"
> listen_address: 162.253.42.xx3
> rpc_address: 162.253.42.xx3
> endpoint_snitch: GossipingPropertyFileSnitch
>
> Then my cassandra cluster started and running smoothly.
>
> Now my requirement is to configure it into private network. Suppose Only
> one of my node (seeder) has public ip and the rest of the nodes are
> connected with private ip only. Then how to configure it??
>
> Node0 interfaces:
> eth0 169.254.169.xx1 (Public IP)
> eth1 192.168.56.101(Private IP)
>
> Node1 interfaces:
> eth0 192.168.56.102(Private IP)
>
> Node2 interfaces:
> eth0 192.168.56.103(Private IP)
>
> I want to use the node0 as seeder and use the public ip so that i can
> access it remotely and can join with other Datacenter nodes later time. But
> my rest of the nodes should not have any public interfaces. Now how to
> configure it?
>
>