Solr CLI 1) add offline shad 2) add replica

solr_tips.txt

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# solr search string with NULL values
*:* -field_name:[* to *]

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# solr add offline shard
solrctl --solr http://<target_solr_server>:8983/solr 
core --create <core_name> \
-p dataDir=<index_hdfs_path> \
-p collection.configName=<config_name> \
-p collection=<collection_name> \
-p numShards=<int> \
-p shard=<shard_id>

where:
- target_solr_server: target server for new shard
- core_name: <collection_name>_<shard_id>_<replica_id>
- shard_id: shard identifier. e.g. shard2, etc

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# solr add replica
solrctl --zk <zkhost>:2181/solr \
--solr <solr_server>:8983/solr 
core --create <new_shard_id> \
-p collection=<collection> \
-p shard=<shard>