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ZooKeeper | Verify ZooKeeper Status
  1. Verify if ZooKeeper is running
  2. Four letter words commands of ZooKeeper

  1. Verify if ZooKeeper is running
    To check the status of ZooKeeper:
    To validate that ZooKeeper is listening on port 2181:
  2. Four letter words commands of ZooKeeper
    You can visit this page for the list of the four letter words commands https://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_zkCommands

    To be able to execute the four letter words commands of ZooKeeper, you need to add the following property to "zoo.cfg" file:

    You can also set Java system property: zookeeper.4lw.commands.whitelist

    You can run one of four letter words commands of ZooKeeper using nc command:


    You can also use telnet command to connect to the client port and execute the command srvr:
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