Apache Solr Reference Guide Covering Apache Solr 6.0

Create the instance
Creating the instance is a simple matter of extracting the files into a specific target directory. The actual directory
itself doesn't matter, as long as you know where it is, and where you'd like to have ZooKeeper store its internal
data.
Configure the instance
The next step is to configure your ZooKeeper instance. To do that, create the following file:
/conf/zoo.cfg. To this file, add the following information:
tickTime=2000
dataDir=/var/lib/zookeeper
clientPort=2181
The parameters are as follows:
tickTime: Part of what ZooKeeper does is to determine which servers are up and running at any given time, and
the minimum session time out is defined as two "ticks". The tickTime parameter specifies, in miliseconds, how
long each tick should be.
dataDir: This is the directory in which ZooKeeper will store data about the cluster. This directory should start out
empty.
clientPort: This is the port on which Solr will access ZooKeeper.
Once this file is in place, you're ready to start the ZooKeeper instance.
Run the instance
To run the instance, you can simply use the ZOOKEEPER_HOME/bin/zkServer.sh script provided, as with this
command: zkServer.sh start
Again, ZooKeeper provides a great deal of power through additional configurations, but delving into them is
beyond the scope of this tutorial. For more information, see the ZooKeeper Getting Started page. For this
example, however, the defaults are fine.
Point Solr at the instance
Pointing Solr at the ZooKeeper instance you've created is a simple matter of using the -z parameter when using
the bin/solr script. For example, in order to point the Solr instance to the ZooKeeper you've started on port 2181,
this is what you'd need to do:
Starting cloud example with Zookeeper already running at port 2181 (with all other defaults):
bin/solr start -e cloud -z localhost:2181 -noprompt
Add a node pointing to an existing ZooKeeper at port 2181:
bin/solr start -cloud -s -p 8987 -z localhost:2181
NOTE: When you are not using an example to start solr, make sure you upload the configuration set to
zookeeper before creating the collection.
Shut down ZooKeeper
To shut down ZooKeeper, use the zkServer script with the "stop" command: zkServer.sh stop.
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