This is a bit of a guess - I haven't used this functionality before. But to a novice the "tag" Rule Condition for "Rule Based Replica Placement" sounds similar to the requirements you mentioned above.
https://lucene.apache.org/solr/guide/8_3/rule-based-replica-placement.html#rule-conditions Good luck, Jason On Thu, Jan 30, 2020 at 1:00 PM Karl Stoney <karl.sto...@autotrader.co.uk.invalid> wrote: > > Hey, > Thanks for the reply but I'm trying to have something fully automated and > dynamic. For context I run solr on kubernetes, and at the moment it works > beautifully with autoscaling (i can scale up the kubernetes deployment and > solr adds replicas and removes them). > > I'm trying to add a new type of node though, backed by very fast but > ephemeral disks and the idea was to have only PULL replicas running on those > nodes automatically and NRT on the persistent disk instances. > > Might be a pipe dream but I'm striving for no manual configuration. > ________________________________ > From: Edward Ribeiro <edward.ribe...@gmail.com> > Sent: 30 January 2020 16:56 > To: solr-user@lucene.apache.org <solr-user@lucene.apache.org> > Subject: Re: Replica type affinity > > Hi Karl, > > During collection creation you can specify the `createNodeSet` parameter as > specified by the Solr Reference Guide snippet below: > > "createNodeSet > Allows defining the nodes to spread the new collection across. The format > is a comma-separated list of node_names, such as > localhost:8983_solr,localhost:8984_solr,localhost:8985_solr. > If not provided, the CREATE operation will create shard-replicas spread > across all live Solr nodes. > Alternatively, use the special value of EMPTY to initially create no > shard-replica within the new collection and then later use the ADDREPLICA > operation to add shard-replicas when and where required." > > > There's also Collections API that you can use the node parameter of > ADDREPLICA to specify the node that replica shard should be created on. > See: > https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Flucene.apache.org%2Fsolr%2Fguide%2F6_6%2Fcollections-api.html%23CollectionsAPI-Input.9&data=02%7C01%7Ckarl.stoney%40autotrader.co.uk%7Ce6f81aab85274cd0081408d7a5a56464%7C926f3743f3d24b8a816818cfcbe776fe%7C0%7C0%7C637160002076345528&sdata=3pFUtr6o7vK0srGR60lIUc%2Fo9QSftmAcnQDkcx5z%2Bl8%3D&reserved=0 > Other > commands that can be useful are REPLACENODE, MOVEREPLICA. > > Edward > > > On Thu, Jan 30, 2020 at 1:00 PM Karl Stoney > <karl.sto...@autotrader.co.uk.invalid> wrote: > > > Hey everyone, > > Does anyone know of a way to have solr replicas assigned to specific nodes > > by some sort of identifying value (in solrcloud). > > > > In summary I’m trying to have some Read only replicas only every be > > assigned to nodes named “solr-ephemeral-x” and my nrt and masters assigned > > to “solr-index”. > > > > Kind of like rack affinity in elasticsearch! > > > > Get Outlook for > > iOS<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fo0ukef&data=02%7C01%7Ckarl.stoney%40autotrader.co.uk%7Ce6f81aab85274cd0081408d7a5a56464%7C926f3743f3d24b8a816818cfcbe776fe%7C0%7C0%7C637160002076345528&sdata=a%2BRpt9TyPy4oksfWZzl79rs7pLIwPnPE4AX%2B2SZr03w%3D&reserved=0> > > This e-mail is sent on behalf of Auto Trader Group Plc, Registered Office: > > 1 Tony Wilson Place, Manchester, Lancashire, M15 4FN (Registered in England > > No. 9439967). This email and any files transmitted with it are confidential > > and may be legally privileged, and intended solely for the use of the > > individual or entity to whom they are addressed. If you have received this > > email in error please notify the sender. This email message has been swept > > for the presence of computer viruses. > > > This e-mail is sent on behalf of Auto Trader Group Plc, Registered Office: 1 > Tony Wilson Place, Manchester, Lancashire, M15 4FN (Registered in England No. > 9439967). This email and any files transmitted with it are confidential and > may be legally privileged, and intended solely for the use of the individual > or entity to whom they are addressed. If you have received this email in > error please notify the sender. This email message has been swept for the > presence of computer viruses.
