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From Chamila De Alwis <chami...@wso2.com>
Subject Re: The role of puppet agent in the spawned instance
Date Thu, 14 Aug 2014 12:42:39 GMT
Hi Dinesh,

Thanks for the reply.

As far as I understand puppet master will identify the node based on the
cert name of the puppet agent. In the case of a generic base image, does
puppet agent pass any additional parameters when communicating with the
puppet master to request the node catalogue?


Regards,
Chamila de Alwis
Software Engineer | WSO2 | +94772207163
Blog: code.chamiladealwis.com




On Thu, Aug 14, 2014 at 5:11 PM, Dinesh Bandara <dineshb@wso2.com> wrote:

> Hi Chamila,
>
> Please find my comment inline.
>
> On Thu, Aug 14, 2014 at 4:40 PM, Chamila De Alwis <chamilad@wso2.com>
> wrote:
>
>> Hi,
>>
>> When creating a cartridge we set up the base image by specifying the
>> stratos service name and installing the packages needed for that service
>> using puppet. For example if we specify "php" as the service name PHP
>> packages and its dependencies will be installed.
>>
> If we used "default" as service name it will install cartridge agent, java
> and basic dependencies. So base cartridge is not bound to any service type.
> it is a generic one.
>
>
>> When a new instance is created from a PHP cartridge init.sh is run at the
>> start. This also triggers the puppet agent.
>>
> Yes.
>
>
>> What is the purpose of triggering puppet agent at instance start up? Is
>> it only to find any manifest updates?
>>
> If use a generic cartridge image as "imageId" when deploying, puppet agent
> will install required packages and dependencies. If use a service bound
> cartridge image (PHP, MySQL, etc.), it will not update any packages or
> dependencies but update the manifest updates as you mentioned such as ips
> and ports of message broker and cep
>
>
>> Regards,
>> Chamila de Alwis
>> Software Engineer | WSO2 | +94772207163
>> Blog: code.chamiladealwis.com
>>
>>
>>
> --
> *Dinesh Bandara*
> Software Engineer
> WSO2 Inc.; http://wso2.com
> lean.enterprise.middleware
>
>

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