zookeeper

1. Download and extract Zookeeper packages.

$cd /opt

# wget http://www.eu.apache.org/dist/zookeeper/zookeeper-3.4.9/zookeeper-3.4.9.tar.gz

# tar zxvf zookeeper-3.4.9.tar.gz

# cp zookeeper-3.4.9/conf/zoo_sample.cfg zookeeper-3.4.9/conf/zoo.cfg

2. Create a data directory.

# mkdir /var/zookeeper

3. Edit thedataDirproperty in the zookeeper configuration file.

# vim /opt/zookeeper-3.4.9/conf/zoo.cfg

...

dataDir=/var/zookeeper

...

4. config supervisor

# vim /etc/suppervisor/conf.d/zookeeper.conf

[program:zookeeper]

command=/opt/zookeeper-3.4.9/bin/zkServer.sh start-foreground

autostart=true

autorestart=true

startsecs=1

startretries=999

redirect_stderr=false

stdout_logfile=/var/log/zookeeper-out

stdout_logfile_maxbytes=10MBs

tdout_logfile_backups=10

stdout_events_enabled=true

stderr_logfile=/var/log/zookeeper-err

stderr_logfile_maxbytes=100MB

stderr_logfile_backups=10

stderr_events_enabled=true

5. Start Zookeeper.

# service supervisors start

Starting supervisord:[OK]

6. Check Zookeeper status.

$sudo supervisorctlzookeeper

RUNNING pid 24765, uptime 0:00:06

7. Check if Zookeeper service is running.

$netstat -ntlp | grep 2181

tcp    0  0 :::2181        :::*LISTEN  2132/java