6. Upgrade ZooKeeper

  1. Execute the following command on all the ZooKeeper nodes:

    • For RHEL/CentOS/Oracle Linux:

      yum upgrade zookeeper

    • For SLES:

      zypper update zookeeper
    • For Ubuntu:

      apt-get update zookeeper
  2. Replace your configuration after upgrading. Replace the ZooKeeper template configuration in /etc/zookeeper/conf.

  3. Start ZooKeeper. On all the ZooKeeper host machines, execute the following command:

    sudo su -l $ZOOKEEPER_USER -c "source /etc/zookeeper/conf/zookeeper-env.sh; export ZOOCFGDIR=/etc/zookeeper/conf; /usr/lib/zookeeper/bin/zkServer.sh start >> $ZOOKEEPER_LOG_DIR/zoo.out\"


    • $ZOOKEEPER_USER is the ZooKeeper Service user. For example, zookeeper.

    • $ZOOKEEPER_LOG_DIR is the directory where ZooKeeper server logs are stored. For example, /var/log/zookeeper.

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