Chapter 4. Configuring Storm for Supervision

Stop all Storm components.

Using Ambari Web, browse to Services > Storm > Service Actions, choose Stop. Wait until the Storm service stop completes.

Stop Ambari Server.

ambari-server stop

Change Supervisor and Nimbus command scripts in the Stack definition.

On Ambari Server host, run:

sed -ir "s/scripts\/supervisor.py/scripts\/supervisor_prod.py/g" /var/lib/ambari-server/resources/common-services/STORM/0.9.1.2.1/metainfo.xml

sed -ir "s/scripts\/nimbus.py/scripts\/nimbus_prod.py/g" /var/lib/ambari-server/resources/common-services/STORM/0.9.1.2.1/metainfo.xml

Install supervisord on all Nimbus and Supervisor hosts.

Configure supervisord to supervise Nimbus Server and Supervisors by appending the following to /etc/supervisord.conf on all Supervisor host and Nimbus hosts accordingly.

[program:storm-nimbus]
command=env PATH=$PATH:/bin:/usr/bin/:/usr/jdk64/jdk1.7.0_67/bin/ JAVA_HOME=/usr/jdk64/jdk1.7.0_67 /usr/hdp/current/storm-nimbus/bin/storm nimbus
user=storm
autostart=true
autorestart=true
startsecs=10
startretries=999
log_stdout=true
log_stderr=true
logfile=/var/log/storm/nimbus.out
logfile_maxbytes=20MB
logfile_backups=10

[program:storm-supervisor]
command=env PATH=$PATH:/bin:/usr/bin/:/usr/jdk64/jdk1.7.0_67/bin/ JAVA_HOME=/usr/jdk64/jdk1.7.0_67 /usr/hdp/current/storm-supervisor/bin/storm supervisor
user=storm
autostart=true
autorestart=true
startsecs=10
startretries=999
log_stdout=true
log_stderr=true
logfile=/var/log/storm/supervisor.out
logfile_maxbytes=20MB
logfile_backups=10

	Note
	Change /usr/jdk64/jdk1.7.0_67 accordingly to the location of the JDK being used by Ambari in your environment.

Start Supervisord service on all Supervisor and Nimbus hosts.

service supervisord start

Start Ambari Server.

ambari-server start

Start all the other Storm components.

Using Ambari Web, browse to Services > Storm > Service Actions, choose Start.