For CentOS I created an init script to start it at boot time and shut it down for rebooting or power off. If you want to use this init script for your own machine please look through the script and change the necessary parameters, e.g. CASSANDRA_HOME.
Please also note that in the stop function it decommissions the node from the cluster. This is probably not what you want in production environments.
#!/bin/bash
# chkconfig: 2345 99 01
# description: Cassandra
. /etc/rc.d/init.d/functions
CASSANDRA_HOME=/opt/apache-cassandra-0.7.4
CASSANDRA_BIN=$CASSANDRA_HOME/bin/cassandra
CASSANDRA_NODETOOL=$CASSANDRA_HOME/bin/nodetool
CASSANDRA_LOG=$CASSANDRA_HOME/log/cassandra.log
CASSANDRA_PID=/var/run/cassandra.pid
CASSANDRA_LOCK=/var/lock/subsys/cassandra
PROGRAM="cassandra"
if [ ! -f $CASSANDRA_BIN ]; then
echo "File not found: $CASSANDRA_BIN"
exit 1
fi
RETVAL=0
start() {
if [ -f $CASSANDRA_PID ] && checkpid `cat $CASSANDRA_PID`; then
echo "Cassandra is already running."
exit 0
fi
echo -n $"Starting $PROGRAM: "
daemon $CASSANDRA_BIN -p $CASSANDRA_PID >> $CASSANDRA_LOG 2>&1
usleep 500000
RETVAL=$?
if [ $RETVAL -eq 0 ]; then
touch $CASSANDRA_LOCK
echo_success
else
echo_failure
fi
echo
return $RETVAL
}
stop() {
if [ ! -f $CASSANDRA_PID ]; then
echo "Cassandra is already stopped."
exit 0
fi
echo -n $"Stopping $PROGRAM: "
$CASSANDRA_NODETOOL -h 127.0.0.1 decommission
if kill `cat $CASSANDRA_PID`; then
RETVAL=0
rm -f $CASSANDRA_LOCK
echo_success
else
RETVAL=1
echo_failure
fi
echo
[ $RETVAL = 0 ]
}
status_fn() {
if [ -f $CASSANDRA_PID ] && checkpid `cat $CASSANDRA_PID`; then
echo "Cassandra is running."
exit 0
else
echo "Cassandra is stopped."
exit 1
fi
}
case "$1" in
start)
start
;;
stop)
stop
;;
status)
status_fn
;;
restart)
stop
start
;;
*)
echo $"Usage: $PROGRAM {start|stop|restart|status}"
RETVAL=3
esac
exit $RETVAL
If all looks alright, name the script cassandra and place it in /etc/init.d/
After that run the following commands:
mkdir /opt/apache-cassandra-0.7.4/log chmod +x /etc/init.d/cassandra chkconfig --add cassandra service cassandra start
CentOS Cassandra init (start / stop) script
Thanks for the help on this! Cassandra is NOT an easy install to get running.
When i try to run “chkconfig –add cassandra” I keep getting “service cassandra does not support chkconfig”
I’m running Fedora 8 on EC2. I copied the script exactly, and updated the environment variables to our server.
Can you help?
thanks man, this is nice
Hi,
I patched your init script to be able to alter JVM_OPTS or other options passed to cassandra without modifying either your script or cassandra core files.
Just add a ${CASSANDRA_HOME}/bin/setenv.sh file and specify your opts there.
Here is the patch file :
# cat /tmp/cassandra.patch
*** cassandra.orig 2012-06-18 12:07:29.475126749 +0200
— cassandra 2012-06-18 12:05:27.664129224 +0200
***************
*** 11,16 ****
— 11,19 —-
CASSANDRA_PID=/var/run/cassandra.pid
CASSANDRA_LOCK=/var/lock/subsys/cassandra
PROGRAM=”cassandra”
+ USER=”cassandra”
+
+ . ${CASSANDRA_HOME}/bin/setenv.sh
if [ ! -f $CASSANDRA_BIN ]; then
echo “File not found: $CASSANDRA_BIN”
***************
*** 25,31 ****
exit 0
fi
echo -n $”Starting $PROGRAM: ”
! daemon –user cassandra $CASSANDRA_BIN -p $CASSANDRA_PID >> $CASSANDRA_LOG 2>&1
usleep 500000
RETVAL=$?
if [ $RETVAL -eq 0 ]; then
— 28,34 —-
exit 0
fi
echo -n $”Starting $PROGRAM: ”
! daemon –user ${USER} $CASSANDRA_BIN -p $CASSANDRA_PID >> $CASSANDRA_LOG 2>&1
usleep 500000
RETVAL=$?
if [ $RETVAL -eq 0 ]; then
***************
*** 59,65 ****
status_fn() {
if [ -f $CASSANDRA_PID ] && checkpid `cat $CASSANDRA_PID`; then
! echo “Cassandra is running.”
exit 0
else
echo “Cassandra is stopped.”
— 62,68 —-
status_fn() {
if [ -f $CASSANDRA_PID ] && checkpid `cat $CASSANDRA_PID`; then
! echo “Cassandra is running – PID=`cat $CASSANDRA_PID`”
exit 0
else
echo “Cassandra is stopped.”
Regards,
Nicolas Maupu
Bedankt Jan Sipke for sharing this startup script!