Hi, thanks, this is really helpful. I'll have a look.

On Wed, Oct 27, 2021 at 6:36 PM Houston Putman <hous...@apache.org> wrote:

> Vincenzo,
>
> If you use the Solr Operator <https://solr.apache.org/operator/>, it will
> manage the upgrades for you in a safe manner (waiting for x number of
> replicas to be healthy before moving onto the next node).
>
> Hopefully the following documentation pages will help:
>
>    - CRD Options for Update Strategy
>    <
> https://apache.github.io/solr-operator/docs/solr-cloud/solr-cloud-crd.html#update-strategy
> >
>    - Managed Update Logic
>    <
> https://apache.github.io/solr-operator/docs/solr-cloud/managed-updates.html
> >
>
> You can configure it so that it will upgrade at most 1 Solr Node at a time,
> and only have 1 replica of each shard unhealthy at any given time.
>
> - Houston
>
> On Wed, Oct 27, 2021 at 12:29 PM Vincenzo D'Amore <v.dam...@gmail.com>
> wrote:
>
> > HI Rob, thanks for your help.
> > Do you know if in case of failure (initFailures not empty)
> > /solr/admin/cores changes the http status code of the response in 500 (or
> > everything that is not 200) ?
> >
> > On Wed, Oct 27, 2021 at 6:13 PM Robert Pearce <rp3...@gmail.com> wrote:
> >
> > > Take a look at the cores REST API, something like
> > >
> > > http://localhost:8983/solr/admin/cores?action=STATUS&wt=json
> > >
> > > Any failed cores will be in ‘initFailures’; cores which started will be
> > > under “status”
> > >
> > > Rob
> > >
> > > > On 27 Oct 2021, at 16:28, Vincenzo D'Amore <v.dam...@gmail.com>
> wrote:
> > > >
> > > > Hi all,
> > > >
> > > > when a Solr instance is started I would be sure all the indexes
> present
> > > are
> > > > up and running, in other words that the instance is healthy.
> > > > The healthy status (aka liveness/readiness) is especially useful
> when a
> > > > Kubernetes SolrCloud cluster has to be restarted for any
> configuration
> > > > management needs and you want to apply your change one node at a
> time.
> > > > AFAIK I can ping only one index at a time, but there is no way out of
> > the
> > > > box to test that a bunch of indexes are active (green status).
> > > > Have you ever faced the same problem? What do you think?
> > > >
> > > > Best regards,
> > > > Vincenzo
> > > >
> > > > --
> > > > Vincenzo D'Amore
> > >
> >
> >
> > --
> > Vincenzo D'Amore
> >
>


-- 
Vincenzo D'Amore

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