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 >
