apache-zookeeper

How to check if ZooKeeper is running or up from command prompt?

I exploring a few options to how Zookeeper is up and running

I would like to know how can I find the below.

  1. hostname and port for my zookeeper instance---I checked the zoo.cfg and I could only find the ClientPort not the hostname, will hostname be the hostname of my box??

  2. To check if ZooKeeper is up and running---I tried to do a ps -ef | grep "zoo" I could not find anything. May be I am using a wrong key word to search??

Any help would be really appreciated?

Solution

  • To check if Zookeeper is accessible. One method is to simply telnet to the proper port and execute the stats command. 

    root@host:~# telnet localhost 2181
Trying 127.0.0.1...
Connected to myhost.
Escape character is '^]'.
stats
Zookeeper version: 3.4.3-cdh4.0.1--1, built on 06/28/2012 23:59 GMT
Clients:

Latency min/avg/max: 0/0/677
Received: 4684478
Sent: 4687034
Outstanding: 0
Zxid: 0xb00187dd0
Mode: leader
Node count: 127182
Connection closed by foreign host.