solr.xml

<?xml version="1.0" encoding="UTF-8" ?>
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<!--
   This is an example of a simple "solr.xml" file for configuring one or
   more Solr Cores, as well as allowing Cores to be added, removed, and
   reloaded via HTTP requests.

   More information about options available in this configuration file,
   and Solr Core administration can be found online:
   http://wiki.apache.org/solr/CoreAdmin
-->

<solr>

  <solrcloud>

    <str name="host">${host:}</str>
    <int name="hostPort">${jetty.port:8983}</int>
    <str name="hostContext">${hostContext:solr}</str>

    <bool name="genericCoreNodeNames">${genericCoreNodeNames:true}</bool>

    <int name="zkClientTimeout">${zkClientTimeout:30000}</int>
    <int name="distribUpdateSoTimeout">${distribUpdateSoTimeout:600000}</int>
    <int name="distribUpdateConnTimeout">${distribUpdateConnTimeout:60000}</int>
    <str name="zkCredentialsProvider">${zkCredentialsProvider:org.apache.solr.common.cloud.DefaultZkCredentialsProvider}</str>
    <str name="zkACLProvider">${zkACLProvider:org.apache.solr.common.cloud.DefaultZkACLProvider}</str>

  </solrcloud>

  <shardHandlerFactory name="shardHandlerFactory"
    class="HttpShardHandlerFactory">
    <int name="socketTimeout">${socketTimeout:600000}</int>
    <int name="connTimeout">${connTimeout:60000}</int>
    <str name="shardsWhitelist">${solr.shardsWhitelist:}</str>
  </shardHandlerFactory>

  <backup>
    <repository name="S3" class="org.apache.solr.core.backup.repository.HdfsBackupRepository" default="false">
      <str name="location">s3a://solr-backups/</str>
      <str name="solr.hdfs.home">s3a://solr-backups/</str>
    </repository>
  </backup>

</solr>