[Hawkular-dev] Identification of WildFly in container in a Kube/Openshift env

[Michael Burman]

Hi,

Running multiple servers per pod sounds like a defeat of the whole idea of docker ;). If you run multiple instances of this same pod, each one will have a different hostname (the hawkular-cassandra would stay the same, but the part after it would change).

  - Micke

----- Original Message -----
From: "Jay Shaughnessy" <jshaughn at redhat.com>
To: hawkular-dev at lists.jboss.org
Sent: Friday, July 29, 2016 9:09:02 PM
Subject: Re: [Hawkular-dev] Identification of WildFly in container in a Kube/Openshift env






Are multiple servers/agents per container a possibility? If so we'd need to append a differentiator to the container identifier. 
Also, with respect to a feedid based on deployments, isn't it possible that multiple containers run the same deployments for load-balancing purposes? Wouldn't that result in multiple agents running with the same feedid? Anyway, It seems if we could derive a feedid from the container, with perhaps a new token like autogenerate-from-container, that could be a nice way to easily identify a feed for a container. This doesn't solve the issue of replacing a stopped container with a new container, thus generating new inventory and orphaning the existing inventory. But in that situation I think we may just want to look for a decent way to kill that inventory, like TTL or something. 


On 7/28/2016 1:08 PM, John Mazzitelli wrote: 





Is there any reason the agent can't use container as identification?

HOSTNAME="hawkular-cassandra-1-6o1y8" 
Things like that would work well.

We could even allow the agent to support notation like this:

<storage-adapter feed-id="%envvar(HOSTNAME)" ... />

or whatever syntax makes sense

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