[jira] [Updated] (FELIX-5899) Add liveness checks

["Christian Schneider (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FELIX-5899?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christian Schneider updated FELIX-5899:
---------------------------------------
    Summary: Add liveness checks  (was: Add liveliness checks)

> Add liveness checks
> -------------------
>
>                 Key: FELIX-5899
>                 URL: https://issues.apache.org/jira/browse/FELIX-5899
>             Project: Felix
>          Issue Type: Improvement
>          Components: System Ready
>    Affects Versions: systemready-0.2.0
>            Reporter: Christian Schneider
>            Assignee: Christian Schneider
>            Priority: Major
>             Fix For: systemready-0.4.0
>
>
> Felix systemready right now only supports readiness checks.
> In kubernetes there is a distinction between liveliness and readiness.
>  * Liveliness decides if the pod needs to be killed and restarted.
>  * Readiness decides if the pod is exposed to the service / load balancer. 
> So it makes sense to also support liveliness checks in systemready.
> The design idea is that liveliness is a subset of readiness. So an inner set of checks should decide about liveliness and the full set should decide about readines.
> So I plan to add a property type=Readiness, Liveliness that determines the type of the check. A check without this property is considered as a readiness check.
> The second thing we need is another servlet that displays the liveliness status to the outside.



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