ZooKeeper | Validate running ZooKeeper
  1. Validate running ZooKeeper
  2. Four letter words commands of ZooKeeper
  1. Validate running ZooKeeper
    To validate that ZooKeeper is listening on port 2181:

    To list all active connections to ZooKeeper:

  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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