[jira] [Commented] (FLINK-17032) Naming convention unification for all the Kubernetes Resources

["Chesnay Schepler (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-17032?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17150884#comment-17150884 ] 

Chesnay Schepler commented on FLINK-17032:
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I think this goes in a better direction [~felixzheng].

> _The reason why the name of the job manager pods does not contain a resource type is that: when we create a Deployment, it creates a {{replicaset}} and add a random string{{(*66cf4d99b5)* }}to the deployment name for the {{replicaset}} name. The {{replicaset}} creates the pod(s). Replica set also adds another random string to each {{pod}}._

Not sure I quite understand this; is it that the JobManager pods inherits the replicaset name + a random suffix, and thus having a resource type "pod" doesn't make sense since it applies to both the pods and replicaset?

Why does the replicaset need a random string? Doesn't the clusterId prevent clashes? Or can there be multiple replicasets with the same clusterId?

Could we still not include "JobManager" in the pod/replicaset name?

> _Given that the job manager pods do not contain a resource type in their names, we don't specify a resource type for the task manager pods as well._

That sounds reasonable.

> Naming convention unification for all the Kubernetes Resources
> --------------------------------------------------------------
>
>                 Key: FLINK-17032
>                 URL: https://issues.apache.org/jira/browse/FLINK-17032
>             Project: Flink
>          Issue Type: Improvement
>          Components: Deployment / Kubernetes
>    Affects Versions: 1.10.0
>            Reporter: Canbin Zheng
>            Priority: Minor
>             Fix For: 1.11.0
>
>
> Currently, the naming rules are different among the Kubernetes resources we have created, the rules are as follows:
>  # The Deployment: ${clusterId}
>  # The internal Service: ${clusterId}
>  # The external Service: ${clusterId}-rest
>  # The Flink Configuration ConfigMap: flink-config-${clusterId}
>  # The Hadoop Configuration ConfigMap: hadoop-config-${clusterId}
>  # The JobManager Pod: ${clusterId}\-${random string}-${random string}
>  # The TaskManager Pod: ${clusterId}\-taskmanager-${currentMaxAttemptId}-${currentMaxPodId}
> In the future, we would add other Kubernetes resources, and it would be better to have a unified naming convention for all of them.
> This ticket proposes the following naming convention:
>  * The Deployment: ${clusterId}
>  * The internal Service: ${clusterId}-internal-svc
>  * The external Service: ${clusterId}-external-svc
>  * The Flink Configuration ConfigMap: ${clusterId}-flink-config
>  * The Hadoop Configuration ConfigMap: ${clusterId}-hadoop-config
>  * The JobManager Pod: ${clusterId}\-${random string}-${random string}
>  * The TaskManager Pod: ${clusterId}\-taskmanager-${currentMaxAttemptId}-${currentMaxPodId}



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