On 9/21/2018 2:07 PM, Chuck Reynolds wrote:
I'm using Solr 6.6 and I want to create a 90 node cluster with a replication
factor of three. I'm using AWS EC2 instances and I have a requirement to
replicate the data into 3 AWS availability zones.
So 30 servers in each zone and I don't see a create collection rule that
will put one replica in each of the three zones.
What am I missing?
The documentation says that one of the uses is to do things like only
allowing one replica per rack.
http://lucene.apache.org/solr/guide/7_4/rule-based-replica-placement.html
But it doesn't say how to do this. Reading the documentation, I cannot
figure it out.
There's a little more data on the issue that implemented the feature:
https://jira.apache.org/jira/browse/SOLR-6220
But I still can't tell from reading both of these how to actually DO it.
Unanswered questions:
How do I assign arbitrary tags to each node that are then used in a snitch?
How are these rules added to Solr's configuration?
The MODIFYCOLLECTION action is mentioned. But what if I want to create
rules for collections that don't exist yet? I can't modify a collection
if it doesn't exist yet.
Exactly what text is required, and where? SOLR-6220 shows JSON-type
syntax, but that type of syntax is not mentioned in the documentation AT
ALL.
I remember seeing something come through somewhere (jira? dev list? not
sure where!) about this feature being deprecated in favor of autoscale
settings, but I can't find it now. If autoscaling is the preferred way
to handle this, how is it done? I can't find anything useful in that
documentation section either.
Thanks,
Shawn
