Installing and configuring ZooKeeper

The following is the step-by-step process to download, install, and configure ZooKeeper:

1. The download link for ZooKeeper is http://apache.mirrors.lucidnetworks.net/zookeeper/.

   So, let's download the latest release of ZooKeeper using the following command:

   wget http://apache.mirrors.lucidnetworks.net/zookeeper/stable/zookeeper-3.4.6.tar.gz
   

2. Extract it as follows:

   tar –xvzfzookeeper-3.4.6.tar.gz
   

3. Rename this file for an easy naming convention:

   mv zookeeper-3.4.6.tar.gz zookeeper
   

4. Move it to a desired location:

   mv zookeeper ~/hbinaries/
   cd ~/hbinaries/zookeeper/conf
   vim zoo.cfg
   

5. Now, add the following lines:

   dataDir=/mnt/disk1/zookeeperData#Assuming the layout of the reader's filesystem>
   tickTime=2000
   clientPort=2181
   

   Here, dataDir is the location where the memory snapshot database of ZooKeeper will be stored, tickTime is the heartbeat interval for session timeout in milliseconds, and clientPort is the port where the client connection will be accepted and ZooKeeper...