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The "SolrCloudTomcat" page has been changed by varunsrivastava: http://wiki.apache.org/solr/SolrCloudTomcat?action=diff&rev1=1&rev2=2 - Describe SolrCloudTomcat here. + Example setup for 3 node solr cloud cluster with 3 node Zookeeper ensemble + Solr Cloud machines : s1.solr.com,s2.solr.com,s3.solr.com + + Zookeeper machines: z1.com, z2.com, z3.com + + The default directory for all the setup /home/myuser/ + + + + First bring up zookeeper ensemble + + -------------------------------------------------- + + Do following steps for z1.com,z2.com,z3.com to setup zookeeper + + 1) Download a ZooKeeper from http://hadoop.apache.org/zookeeper/releases.html + + 2) Untar the zookeeper inside zookeeper directory. tar -xf -C /home/myuser/zookeeper/ + + 3) Edit zookeeper config file + + vi /home/myuser/zookeeper/conf/zoo.cfg + and put something similar to + + + + + + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20 + 21 + 22 + 23 + 24 + 25 + 26 + 27 + 28 + 29 + 30 + # The number of milliseconds of each tick + tickTime=2000 + + # The number of ticks that the initial synchronization phase can take + initLimit=10 + + # The number of ticks that can pass between + # sending a request and getting an acknowledgement + syncLimit=5 + + # the directory where the snapshot is stored. + # Choose appropriately for your environment + dataDir=/home/myuser/zookeeper/data/ + + # the port at which the clients will connect + clientPort=2181 + + # the directory where transaction log is stored. + # this parameter provides dedicated log device for ZooKeeper + dataLogDir=/home/myuser/zookeeper/log/ + + # ZooKeeper server and its port no. + # ZooKeeper ensemble should know about every other machine in the ensemble + # specify server id by creating 'myid' file in the dataDir + # use hostname instead of IP address for convenient maintenance + server.1=z1.com:2888:3888 + server.2=z2.com:2888:3888 + server.3=z3.com:2888:3888 + + 4) For each server create an id file in data directory and put appropriate id in the file. For example + + vi /home/myuser/zookeeper/data/myid and write just 1 for z1.com in the file. + For z2.com server write 2 in its myid and 3 in z3.com myid file. myid file is used to identify the zookeeper server. + + 4)Now start zookeeper for each server. + # cd /home/myuser/zookeeper/bin/ + # ./zkServer.sh start + + + + + Setup tomcat + + --------------------- + + Now once zookeeper cluster is ready lets setup Solr Cloud machines : s1.solr.com,s2.solr.com,s3.solr.com + + Lets assume all the 3 solr machines have tomcat installed in /home/myuser/tomcat/ + + + + First lets load solr config from one of the solr machine + + 1) Get solr.war to s1.solr.com machine + + 2) Now lets copy solr.war i to solr-war folder – cp solr.war /home/myuser/solr-war/ + + 3) cd /home/myuser/solr-war/ + + 4) jar xvf solr.war + + 5) cp WEB-INF/lib/* /home/myuser//solr-war-lib/ + + 6) get all the solrconfig files like solrconfig.xml, schema.xml etc in /home/myuser/solr-config/ + + 7) Upload config to zookeeper using solr zookeeper cli + + java -classpath .:/home/myuser/solr-war-lib/* org.apache.solr.cloud.ZkCLI -cmd upconfig -zkhost z1.com:2181,z2.com:2181,z3.com:2181 -confdir /home/myuser/solr-config -confname myconf + 8) Link uploaded config with target collection ( assume new collection name will be mycollection) + + java -classpath .:/home/myuser/solr-war-lib/* org.apache.solr.cloud.ZkCLI -cmd linkconfig -collection mycollection -confname myconf -zkhost z1.com:2181,z2.com:2181,z3.com:2181 + + + Now in all the solr machines do following + + 9) create /home/myuser/solr-cores/ for storing the solr index + + 10) create solr.xml in solr-cores + + <?xml version="1.0" encoding="UTF-8" ?> + <solr persistent="true" sharedLib="lib"> + <cores adminPath="/admin/cores" zkClientTimeout="20000" hostPort="8080" hostContext="solr"> + </cores> + </solr> + + 11) Start the tomcat with following jvm options + + -DzkHost=z1.com:2181,z2.com:2181,z3.com:2181 + + 12) Put solr.war in /home/myuser/tomcat/webapps/ and restart tomcat + + 13 ) edit /home/myuser/tomcat/webapps/solr/META-INF/context.xml and restart tomcat + + <?xml version="1.0" encoding="utf-8"?> + <Context docBase="solr.war" debug="0" crossContext="false"> + <Environment name="solr/home" type="java.lang.String" value="/home/myuser/solr-cores" override="true"/> + </Context> + + 14) curl 'http://s1.solr.com:8080/solr/admin/collections?action=CREATE&name=mycollection&numShards=3&replicationFactor=1' + + + +
