Configure four-letter-word commands in ZooKeeper
Four-letter-words commands are simple diagnostics commands that can be used over telnet for ZooKeeper. These commands can be configured with Cloudera Manager.
You can configure which four-letter-words commands you want to enable in ZooKeeper. By default the wchp and the wchc commands are disabled.
- In Cloudera Manager, select the ZooKeeper service.
- Click the Configuration tab.
- Find the ZooKeeper 'Four Letter Word' Command Whitelist property.
Use the minus and plus icon to remove or add four-letter-word commands to the
By default the following commands are on the allowlist:
wchccommands are not enabled by default because of their known DOS vulnerability. For more information, see ZOOKEEPER-2693.
*is set, all commands are enabled.
- Click Save Changes.