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Posted to dev@stratos.apache.org by Pradeep Fernando <pr...@gmail.com> on 2013/09/15 07:08:01 UTC
Why IAAS can't have multiple cartridges ?
Hi Devs,
While listening to hangout on cloud-controller, the $subject came up.. May
be its a trivial thing. But I still can't get it.
In the <cartridge>.xml config we can refer multiple IAASes.
eg: tomat cartridge can refer EC2 and Openstack based IAASes.
why cant multiple cartridges refer to same IAAS ? eg,
tomcat cartridge refers to IAAS 'A'
PHP cartridge refers to IAAS 'A' as well..
thanks in advance,
--Pradeep
Re: Why IAAS can't have multiple cartridges ?
Posted by Lakmal Warusawithana <la...@wso2.com>.
Hi Pradeep,
I missed one other thing. In the Cartridge XML we have a section called
iaasProvider. see sample below.
<iaasProvider type="openstack" >
<imageId>RegionOne
/d6e5dbe9-f781-460d-b554-23a133a887cd</imageId>
<property name="keyPair" value="stratos-demo"/>
<property name="instanceType" value="RegionOne/1"/>
<property name="securityGroups" value="default"/>
<!--<property name="payload" value="resources/as.txt"/>-->
</iaasProvider>
It can give a type, here in this sample its gave like type="openstack".
In the Cloud-controller.xml, you can define IaaS configuration, and this
type value is refereeing to the specific IaaS. that how we can say which
cartridge belongs to which IaaS.
On Sun, Sep 15, 2013 at 10:49 AM, Pradeep Fernando <pr...@gmail.com>wrote:
> Thanks Lakmal, for the explanation.
>
> --Pradeep
>
>
> On Sun, Sep 15, 2013 at 10:44 AM, Lakmal Warusawithana <la...@wso2.com>wrote:
>
>> Hi Pradeep,
>>
>>
>> On Sun, Sep 15, 2013 at 10:38 AM, Pradeep Fernando <pr...@gmail.com>wrote:
>>
>>> Hi Devs,
>>>
>>> While listening to hangout on cloud-controller, the $subject came up..
>>> May be its a trivial thing. But I still can't get it.
>>>
>>> In the <cartridge>.xml config we can refer multiple IAASes.
>>>
>>> eg: tomat cartridge can refer EC2 and Openstack based IAASes.
>>>
>>> why cant multiple cartridges refer to same IAAS ? eg,
>>>
>>>
>> It can. If you configure IaaS in the cloud controller (say IaaS A), and
>> then in the <cartridgeA>.xml, you need to give imageID of that cartridge,
>> which belongs to IaaS A. Likewise in the <cartridgeB>.xml you can give
>> imageID of that cartridge, that belongs to IaaS A. In that case CartridgeA
>> and CartridgeB will use same IaaS.
>>
>>
>>> tomcat cartridge refers to IAAS 'A'
>>> PHP cartridge refers to IAAS 'A' as well..
>>>
>>>
>>> thanks in advance,
>>> --Pradeep
>>>
>>>
>>>
>>
>>
>> --
>> Lakmal Warusawithana
>> Software Architect; WSO2 Inc.
>> Mobile : +94714289692
>> Blog : http://lakmalsview.blogspot.com/
>>
>>
>
>
> --
> Pradeep Fernando.
> http://pradeepfernando.blogspot.com/
>
--
Lakmal Warusawithana
Software Architect; WSO2 Inc.
Mobile : +94714289692
Blog : http://lakmalsview.blogspot.com/
Re: Why IAAS can't have multiple cartridges ?
Posted by Pradeep Fernando <pr...@gmail.com>.
Thanks Lakmal, for the explanation.
--Pradeep
On Sun, Sep 15, 2013 at 10:44 AM, Lakmal Warusawithana <la...@wso2.com>wrote:
> Hi Pradeep,
>
>
> On Sun, Sep 15, 2013 at 10:38 AM, Pradeep Fernando <pr...@gmail.com>wrote:
>
>> Hi Devs,
>>
>> While listening to hangout on cloud-controller, the $subject came up..
>> May be its a trivial thing. But I still can't get it.
>>
>> In the <cartridge>.xml config we can refer multiple IAASes.
>>
>> eg: tomat cartridge can refer EC2 and Openstack based IAASes.
>>
>> why cant multiple cartridges refer to same IAAS ? eg,
>>
>>
> It can. If you configure IaaS in the cloud controller (say IaaS A), and
> then in the <cartridgeA>.xml, you need to give imageID of that cartridge,
> which belongs to IaaS A. Likewise in the <cartridgeB>.xml you can give
> imageID of that cartridge, that belongs to IaaS A. In that case CartridgeA
> and CartridgeB will use same IaaS.
>
>
>> tomcat cartridge refers to IAAS 'A'
>> PHP cartridge refers to IAAS 'A' as well..
>>
>>
>> thanks in advance,
>> --Pradeep
>>
>>
>>
>
>
> --
> Lakmal Warusawithana
> Software Architect; WSO2 Inc.
> Mobile : +94714289692
> Blog : http://lakmalsview.blogspot.com/
>
>
--
Pradeep Fernando.
http://pradeepfernando.blogspot.com/
Re: Why IAAS can't have multiple cartridges ?
Posted by Lakmal Warusawithana <la...@wso2.com>.
Hi Pradeep,
On Sun, Sep 15, 2013 at 10:38 AM, Pradeep Fernando <pr...@gmail.com>wrote:
> Hi Devs,
>
> While listening to hangout on cloud-controller, the $subject came up.. May
> be its a trivial thing. But I still can't get it.
>
> In the <cartridge>.xml config we can refer multiple IAASes.
>
> eg: tomat cartridge can refer EC2 and Openstack based IAASes.
>
> why cant multiple cartridges refer to same IAAS ? eg,
>
>
It can. If you configure IaaS in the cloud controller (say IaaS A), and
then in the <cartridgeA>.xml, you need to give imageID of that cartridge,
which belongs to IaaS A. Likewise in the <cartridgeB>.xml you can give
imageID of that cartridge, that belongs to IaaS A. In that case CartridgeA
and CartridgeB will use same IaaS.
> tomcat cartridge refers to IAAS 'A'
> PHP cartridge refers to IAAS 'A' as well..
>
>
> thanks in advance,
> --Pradeep
>
>
>
--
Lakmal Warusawithana
Software Architect; WSO2 Inc.
Mobile : +94714289692
Blog : http://lakmalsview.blogspot.com/
Re: Why IAAS can't have multiple cartridges ?
Posted by Pradeep Fernando <pr...@gmail.com>.
Hi Nirmal,
Thanks for the detailed explanation.. yes, my interpretation of IaaS
instance is wrong. I thought its kind of similar to DB connection
instance.. (a one time thing)
thanks,
--Pradeep
On Sun, Sep 15, 2013 at 1:06 PM, Nirmal Fernando <ni...@gmail.com>wrote:
>
>
>
> On Sun, Sep 15, 2013 at 12:48 PM, Pradeep Fernando <pr...@gmail.com>wrote:
>
>> Hi Nirmal,
>>
>>
>> On Sun, Sep 15, 2013 at 12:37 PM, Nirmal Fernando <nirmal070125@gmail.com
>> > wrote:
>>
>>> Hi Pradeep,
>>>
>>>
>>> On Sun, Sep 15, 2013 at 10:38 AM, Pradeep Fernando <pr...@gmail.com>wrote:
>>>
>>>> Hi Devs,
>>>>
>>>> While listening to hangout on cloud-controller, the $subject came up..
>>>> May be its a trivial thing. But I still can't get it.
>>>>
>>>> In the <cartridge>.xml config we can refer multiple IAASes.
>>>>
>>>> eg: tomat cartridge can refer EC2 and Openstack based IAASes.
>>>>
>>>> why cant multiple cartridges refer to same IAAS ? eg,
>>>>
>>>> tomcat cartridge refers to IAAS 'A'
>>>> PHP cartridge refers to IAAS 'A' as well..
>>>>
>>>
>>> You've misunderstood what I explained there in the hangout.
>>>
>>> In the hangout, I was talking about the Information model of Stratos and
>>> was talking from the java Objects point of view.
>>>
>>> Multiple cartridges referring to same IaaS is a very basic feature of
>>> Stratos (conceptually),
>>>
>>> But, from a programmer's point of view, each Cartridge object, would
>>> have its own IaaS instances (Java instances). There's absolutely no
>>> requirement what so ever for multiple Cartridges to be referenced to the
>>> same IaaS instance.
>>>
>>
>> May be i'm interpreting the IaaS instance wrong...
>> Why two cartridges can't refer to same IaaS instance ( by IaaS instance i
>> mean the object model created using the IaaS section in
>> cloud-controller.xml.) I thought, IaaS instance is one per IaaS and is
>> global...
>>
>
> Pradeep, unfortunately that doesn't make sense, right? Cause, IaaS
> instance holds and define a Cartridge in a particular IaaS. If we have a
> global IaaS instance that would necessarily mean that we have only one real
> Cartridge.
>
> Beside that, what you define in cloud-controller.xml has no usefulness,
> unless you create a reference from a Cartridge definition.
>
> Within a Cartridge definition, you can either put a reference to an IaaS
> defined in cloud-controller.xml and override its properties or define a
> totally new IaaS.
>
> So, as you may have already understand, we define IaaSes in
> cloud-controller.xml, just to avoid repeating common properties of an IaaS,
> in cartridge definitions.
>
>>
>>
>> --Pradeep
>>
>>
>>
>>
>>>
>>> Hope you understood it. Do not hesitate to get your confusions cleared,
>>> if you have more.
>>>
>>>>
>>>>
>>>> thanks in advance,
>>>> --Pradeep
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> Best Regards,
>>> Nirmal
>>>
>>> C.S.Nirmal J. Fernando
>>> Senior Software Engineer,
>>> WSO2 Inc.
>>>
>>> Blog: http://nirmalfdo.blogspot.com/
>>>
>>
>>
>>
>> --
>> Pradeep Fernando.
>> http://pradeepfernando.blogspot.com/
>>
>
>
>
> --
> Best Regards,
> Nirmal
>
> C.S.Nirmal J. Fernando
> Senior Software Engineer,
> WSO2 Inc.
>
> Blog: http://nirmalfdo.blogspot.com/
>
--
Pradeep Fernando.
http://pradeepfernando.blogspot.com/
Re: Why IAAS can't have multiple cartridges ?
Posted by Nirmal Fernando <ni...@gmail.com>.
On Sun, Sep 15, 2013 at 12:48 PM, Pradeep Fernando <pr...@gmail.com>wrote:
> Hi Nirmal,
>
>
> On Sun, Sep 15, 2013 at 12:37 PM, Nirmal Fernando <ni...@gmail.com>wrote:
>
>> Hi Pradeep,
>>
>>
>> On Sun, Sep 15, 2013 at 10:38 AM, Pradeep Fernando <pr...@gmail.com>wrote:
>>
>>> Hi Devs,
>>>
>>> While listening to hangout on cloud-controller, the $subject came up..
>>> May be its a trivial thing. But I still can't get it.
>>>
>>> In the <cartridge>.xml config we can refer multiple IAASes.
>>>
>>> eg: tomat cartridge can refer EC2 and Openstack based IAASes.
>>>
>>> why cant multiple cartridges refer to same IAAS ? eg,
>>>
>>> tomcat cartridge refers to IAAS 'A'
>>> PHP cartridge refers to IAAS 'A' as well..
>>>
>>
>> You've misunderstood what I explained there in the hangout.
>>
>> In the hangout, I was talking about the Information model of Stratos and
>> was talking from the java Objects point of view.
>>
>> Multiple cartridges referring to same IaaS is a very basic feature of
>> Stratos (conceptually),
>>
>> But, from a programmer's point of view, each Cartridge object, would have
>> its own IaaS instances (Java instances). There's absolutely no requirement
>> what so ever for multiple Cartridges to be referenced to the same IaaS
>> instance.
>>
>
> May be i'm interpreting the IaaS instance wrong...
> Why two cartridges can't refer to same IaaS instance ( by IaaS instance i
> mean the object model created using the IaaS section in
> cloud-controller.xml.) I thought, IaaS instance is one per IaaS and is
> global...
>
Pradeep, unfortunately that doesn't make sense, right? Cause, IaaS instance
holds and define a Cartridge in a particular IaaS. If we have a global IaaS
instance that would necessarily mean that we have only one real Cartridge.
Beside that, what you define in cloud-controller.xml has no usefulness,
unless you create a reference from a Cartridge definition.
Within a Cartridge definition, you can either put a reference to an IaaS
defined in cloud-controller.xml and override its properties or define a
totally new IaaS.
So, as you may have already understand, we define IaaSes in
cloud-controller.xml, just to avoid repeating common properties of an IaaS,
in cartridge definitions.
>
>
> --Pradeep
>
>
>
>
>>
>> Hope you understood it. Do not hesitate to get your confusions cleared,
>> if you have more.
>>
>>>
>>>
>>> thanks in advance,
>>> --Pradeep
>>>
>>>
>>>
>>
>>
>> --
>> Best Regards,
>> Nirmal
>>
>> C.S.Nirmal J. Fernando
>> Senior Software Engineer,
>> WSO2 Inc.
>>
>> Blog: http://nirmalfdo.blogspot.com/
>>
>
>
>
> --
> Pradeep Fernando.
> http://pradeepfernando.blogspot.com/
>
--
Best Regards,
Nirmal
C.S.Nirmal J. Fernando
Senior Software Engineer,
WSO2 Inc.
Blog: http://nirmalfdo.blogspot.com/
Re: Why IAAS can't have multiple cartridges ?
Posted by Pradeep Fernando <pr...@gmail.com>.
Hi Nirmal,
On Sun, Sep 15, 2013 at 12:37 PM, Nirmal Fernando <ni...@gmail.com>wrote:
> Hi Pradeep,
>
>
> On Sun, Sep 15, 2013 at 10:38 AM, Pradeep Fernando <pr...@gmail.com>wrote:
>
>> Hi Devs,
>>
>> While listening to hangout on cloud-controller, the $subject came up..
>> May be its a trivial thing. But I still can't get it.
>>
>> In the <cartridge>.xml config we can refer multiple IAASes.
>>
>> eg: tomat cartridge can refer EC2 and Openstack based IAASes.
>>
>> why cant multiple cartridges refer to same IAAS ? eg,
>>
>> tomcat cartridge refers to IAAS 'A'
>> PHP cartridge refers to IAAS 'A' as well..
>>
>
> You've misunderstood what I explained there in the hangout.
>
> In the hangout, I was talking about the Information model of Stratos and
> was talking from the java Objects point of view.
>
> Multiple cartridges referring to same IaaS is a very basic feature of
> Stratos (conceptually),
>
> But, from a programmer's point of view, each Cartridge object, would have
> its own IaaS instances (Java instances). There's absolutely no requirement
> what so ever for multiple Cartridges to be referenced to the same IaaS
> instance.
>
May be i'm interpreting the IaaS instance wrong...
Why two cartridges can't refer to same IaaS instance ( by IaaS instance i
mean the object model created using the IaaS section in
cloud-controller.xml.) I thought, IaaS instance is one per IaaS and is
global...
--Pradeep
>
> Hope you understood it. Do not hesitate to get your confusions cleared, if
> you have more.
>
>>
>>
>> thanks in advance,
>> --Pradeep
>>
>>
>>
>
>
> --
> Best Regards,
> Nirmal
>
> C.S.Nirmal J. Fernando
> Senior Software Engineer,
> WSO2 Inc.
>
> Blog: http://nirmalfdo.blogspot.com/
>
--
Pradeep Fernando.
http://pradeepfernando.blogspot.com/
Re: Why IAAS can't have multiple cartridges ?
Posted by Nirmal Fernando <ni...@gmail.com>.
Hi Pradeep,
On Sun, Sep 15, 2013 at 10:38 AM, Pradeep Fernando <pr...@gmail.com>wrote:
> Hi Devs,
>
> While listening to hangout on cloud-controller, the $subject came up.. May
> be its a trivial thing. But I still can't get it.
>
> In the <cartridge>.xml config we can refer multiple IAASes.
>
> eg: tomat cartridge can refer EC2 and Openstack based IAASes.
>
> why cant multiple cartridges refer to same IAAS ? eg,
>
> tomcat cartridge refers to IAAS 'A'
> PHP cartridge refers to IAAS 'A' as well..
>
You've misunderstood what I explained there in the hangout.
In the hangout, I was talking about the Information model of Stratos and
was talking from the java Objects point of view.
Multiple cartridges referring to same IaaS is a very basic feature of
Stratos (conceptually),
But, from a programmer's point of view, each Cartridge object, would have
its own IaaS instances (Java instances). There's absolutely no requirement
what so ever for multiple Cartridges to be referenced to the same IaaS
instance.
Hope you understood it. Do not hesitate to get your confusions cleared, if
you have more.
>
>
> thanks in advance,
> --Pradeep
>
>
>
--
Best Regards,
Nirmal
C.S.Nirmal J. Fernando
Senior Software Engineer,
WSO2 Inc.
Blog: http://nirmalfdo.blogspot.com/