And what about GlusterFS - does Open Shift driver support checking if GlusterFS endpoint is up and running?
David Strejc t: +420734270131 e: david.str...@gmail.com On Tue, Apr 5, 2016 at 5:54 PM, Ben Parees <bpar...@redhat.com> wrote: > > > On Tue, Apr 5, 2016 at 11:26 AM, Tomáš Kukrál <t...@6shore.net> wrote: > >> Hi, >> is it really possible to attach Endpoint? >> >> I think readiness probes are limited to containers and thus is can not >> solve David's problem because mysql servers are running outside of >> OpenShift. >> >> > sorry, didn't realize it's an external service, my advice would not apply > if that is the case. > > > > >> tom >> >> >> >> On 04-05 09:04, Ben Parees wrote: >> > On Tue, Apr 5, 2016 at 3:59 AM, David Strejc <david.str...@gmail.com> >> wrote: >> > >> > > Dear all, >> > > >> > > my use case is as follows: >> > > >> > > I got MariaDB galera cluster on each node I got Open Shift installed >> on >> > > (they are bare metals). >> > > >> > > I've created endpoints such as this: >> > > >> > > - apiVersion: v1 >> > > kind: Endpoints >> > > metadata: >> > > name: mysql >> > > subsets: >> > > - addresses: >> > > - ip: 10.3.0.1 >> > > ports: >> > > - port: 3306 >> > > - addresses: >> > > - ip: 10.3.1.1 >> > > ports: >> > > - port: 3306 >> > > - addresses: >> > > - ip: 10.3.2.1 >> > > ports: >> > > - port: 3306 >> > > >> > > And I got service which points to this endpoint. >> > > >> > > My question is - Kubernetes doesn't have any kind of "HA proxy mode" >> so it >> > > can tell that any of nodes behind Endpoint is failing? So lets say I >> got >> > > 10.3.0.1 mysql service stopped and kubernetes round robins connection >> to >> > > this host so every third request on my webapp is failing? >> > > >> > > This is what I've experienced in my setup. >> > > >> > > Am I doing something wrong? Or is this a standard behaviour so I have >> to >> > > deploy HA Proxy in between the endpoints and my MySQL database >> cluster? >> > > >> > >> > this what readiness checks are for. If a container fails its readiness >> > check, the endpoint will be removed from the list so it does not serve >> > requests: >> > >> > >> https://docs.openshift.org/latest/dev_guide/application_health.html#container-health-checks-using-probes >> > >> > >> > >> > >> > >> > > >> > > Many thanks for advice. >> > > >> > > David Strejc >> > > t: +420734270131 >> > > e: david.str...@gmail.com >> > > >> > > _______________________________________________ >> > > users mailing list >> > > users@lists.openshift.redhat.com >> > > http://lists.openshift.redhat.com/openshiftmm/listinfo/users >> > > >> > > >> > >> > >> > -- >> > Ben Parees | OpenShift >> >> > _______________________________________________ >> > users mailing list >> > users@lists.openshift.redhat.com >> > http://lists.openshift.redhat.com/openshiftmm/listinfo/users >> >> >> _______________________________________________ >> users mailing list >> users@lists.openshift.redhat.com >> http://lists.openshift.redhat.com/openshiftmm/listinfo/users >> >> > > > -- > Ben Parees | OpenShift > > > _______________________________________________ > users mailing list > users@lists.openshift.redhat.com > http://lists.openshift.redhat.com/openshiftmm/listinfo/users > >
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