On 1/5/2015 9:31 PM, Nishanth S wrote: > I am running multiple solr instances (Solr 4.10.3 on tomcat 8).There are > 3 physical machines and I have 4 solr instances running on each machine > on ports 8080,8081,8082 and 8083.The set up is well up to this point.Now I > want to point each of these instance to a different index directories.The > drives in the machines are mounted as d/1,d/2,d/3 ,d/4 etc.Now if I define > /d/1 as the solr home all solr index directories are created in /d/1 > where as the other drives remain un used.So how do I configure solr to > make use of all the drives so that I can get maximum storage for solr.I > would really appreciate any help in this regard.
You should only run one Solr instance per machine. One instance can handle as many indexes as you want to run. Running multiple instances will waste a fair amount of system resources, and will also make the entire setup a lot more complicated than it needs to be. If you don't plan on setting up RAID (which would probably be a lot easier to manage), here's an idea: Set up the solr home somewhere on the root filesystem, then create symlinks under that which will be the instance directories, pointed to various directories under your other mount points. When Solr starts, it should begin core detection at the solr home and follow those symlinks into the other locations. I'm not aware of any problems with using symlinks in this way. If you're running SolrCloud, that can be a little more complicated, because creating a new collection from scratch will create the cores under the solr home ... but you can move them and symlink them after they're created, then either reload the collection or restart Solr. Just be sure that no indexing is happening when you begin the move. Thanks, Shawn
