4lw (Apache ZooKeeper-specific)
Issue a ZooKeeper 4-letter-word command.
Use this command to access 4-letter-word ZooKeeper commands in a manner similar to issuing these commands via telnet directly to a ZooKeeper server.
By default 4-letter-word commands are disabled by ZooKeeper—you must enable them when configuring the ZooKeeper.
Example lines you can add to the zookeeper.properties file:
// Enable all 4lw commands
4lw.commands.whitelist=*
// Enable only ruok, stat, conf, isro
4lw.commands.whitelist=stat, ruok, conf, isro
Synopsis
4lw <command> [<host:port>]
Options
The following 4-letter-word ZooKeeper commands are supported by MSGMX.
- conf
- cons
- crst
- dump
- envi
- ruok
- srst
- srvr
- stat
- wchc
- wchp
- wchs
For information on available Apache ZooKeeper 4-letter-word commands, see the ZooKeeper Administrator's Guide, The Four Letter Words
Examples
>4lw conf localhost:2181
/Instance/Cluster> 4lw srvr