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Re: Prometheus (OKD/3.11) NFS?



On Tue, Nov 12, 2019 at 3:47 PM Alan Christie
<achristie informaticsmatters com> wrote:
>
> Thanks, it turned out to be relatively simple in that I just needed 2 PVs (prometheus-1 and 2) to satisfy prometheus and 3 (alertmanager-1 to 3) to satisfy the alertmanager. It wasn’t immediately obvious how to solve this in a ‘static’ system it is documented and now working - I just set the two `storage_enabled` variables but leave the `storageslass` ones alone.
>
> I understand the side-effects of NFS but my options (at the moment) are extremely limited.

Ack. If NFS is working for you, this is fine then. The warning notice
is only to make sure that we set correct expectations regarding this
kind of setup.

>
> Thanks for your help.
>
> Alan Christie
> achristie informaticsmatters com
>
>
>
> > On 12 Nov 2019, at 1:28 pm, Simon Pasquier <spasquie redhat com> wrote:
> >
> > On Wed, Nov 6, 2019 at 6:11 PM Alan Christie
> > <achristie informaticsmatters com> wrote:
> >>
> >> Hi,
> >>
> >> My cluster doesn’t have dynamic volumes at the moment. For experimentation is it possible to use NFS volumes in 3.11 for prometheus and the alert manager?
> >
> > In general Prometheus doesn't play well with NFS because most
> > implementations don't fully support POSIX.
> > It is called out in the Prometheus documentation:
> > https://prometheus.io/docs/prometheus/latest/storage/#operational-aspects
> >
> >>
> >> I notice that the ansible playbook variables for prometheus in OKD 3.11 are very different to those in 3.7 but...
> >
> > Yes the big difference starting with 3.11 is that Prometheus is
> > deployed using the Prometheus operator via the Cluster Monitoring
> > Operator.
> >
> >>
> >> - Can I use pre-provisioned NFS volumes?
> >> - …or…is there an equivalent of 3.7’s “openshift_prometheus_alertmanager_storage_kind=nfs"?
> >
> > See https://docs.okd.io/3.11/install_config/prometheus_cluster_monitoring.html#persistent-storage
> >
> >
> >>
> >> Any advice would be greatly appreciated.
> >>
> >> Alan Christie
> >> achristie informaticsmatters com
> >>
> >>
> >>
> >>
> >> _______________________________________________
> >> users mailing list
> >> users lists openshift redhat com
> >> http://lists.openshift.redhat.com/openshiftmm/listinfo/users
> >
>



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