The backup/restore API is intended to address this. https://builds.apache.org/job/Solr-reference-guide-master/javadoc/making-and-restoring-backups.html
Erick's advice is good (and I once drafted docs for the same scheme years ago as well), but I consider it dated -- it's what people had to do before the backup/restore API existed. Internally, backup/restore is doing similar stuff. It's easy to give backup/restore a try; surely you have by now? ~ David On Tue, Mar 6, 2018 at 9:47 AM Patrick Schemitz <p...@solute.de> wrote: > Hi List, > > so I'm running a bunch of SolrCloud clusters (each cluster is: 8 shards > on 2 servers, with 4 instances per server, no replicas, i.e. 1 shard per > instance). > > Building the index afresh takes 15+ hours, so when I have to deploy a new > index, I build it once, on one cluster, and then copy (scp) over the > data/<main_index>/index directories (shutting down the Solr instances > first). > > I could get Solr 6.5.1 to number the shard/replica directories nicely via > the createNodeSet and createNodeSet.shuffle options: > > Solr 6.5.1 /var/lib/solr: > > Server node 1: > instance00/data/main_index_shard1_replica1 > instance01/data/main_index_shard2_replica1 > instance02/data/main_index_shard3_replica1 > instance03/data/main_index_shard4_replica1 > > Server node 2: > instance00/data/main_index_shard5_replica1 > instance01/data/main_index_shard6_replica1 > instance02/data/main_index_shard7_replica1 > instance03/data/main_index_shard8_replica1 > > However, while attempting to upgrade to 7.2.1, this numbering has changed: > > Solr 7.2.1 /var/lib/solr: > > Server node 1: > instance00/data/main_index_shard1_replica_n1 > instance01/data/main_index_shard2_replica_n2 > instance02/data/main_index_shard3_replica_n4 > instance03/data/main_index_shard4_replica_n6 > > Server node 2: > instance00/data/main_index_shard5_replica_n8 > instance01/data/main_index_shard6_replica_n10 > instance02/data/main_index_shard7_replica_n12 > instance03/data/main_index_shard8_replica_n14 > > This new numbering breaks my copy script, and furthermode, I'm worried > as to what happens when the numbering is different among target clusters. > > How can I switch this back to the old numbering scheme? > > Side note: is there a recommended way of doing this? Is the > backup/restore mechanism suitable for this? The ref guide is kind of terse > here. > > Thanks in advance, > > Ciao, Patrick > -- Lucene/Solr Search Committer, Consultant, Developer, Author, Speaker LinkedIn: http://linkedin.com/in/davidwsmiley | Book: http://www.solrenterprisesearchserver.com
