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@Niemi Niemi/ca
Created Jul 3, 2017

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Apache Cassandra Init.d Script by Author: Eric Evans <eevans@racklabs.com>
#! /bin/sh
### BEGIN INIT INFO
# Provides: cassandra
# Required-Start: $remote_fs $network $named $time
# Required-Stop: $remote_fs $network $named $time
# Should-Start: ntp mdadm
# Should-Stop: ntp mdadm
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: distributed storage system for structured data
# Description: Cassandra is a distributed (peer-to-peer) system for
# the management and storage of structured data.
### END INIT INFO
# Author: Eric Evans <eevans@racklabs.com>
DESC="Cassandra"
NAME=cassandra
PIDFILE=/opt/cassandra/logs/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
CONFDIR=/opt/cassandra/conf
WAIT_FOR_START=10
CASSANDRA_HOME=/opt/cassandra
CASSANDRA_CONF=$CONFDIR
FD_LIMIT=100000
[ -e /opt/cassandra/lib/apache-cassandra-3.11.0.jar ] || exit 0
[ -e /opt/cassandra/conf/cassandra.yaml ] || exit 0
[ -e /opt/cassandra/conf/cassandra-env.sh ] || exit 0
# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME
# Export JAVA_HOME, if set.
[ -n "$JAVA_HOME" ] && export JAVA_HOME
# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh
# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions
#
# Function that returns 0 if process is running, or nonzero if not.
#
# The nonzero value is 3 if the process is simply not running, and 1 if the
# process is not running but the pidfile exists (to match the exit codes for
# the "status" command; see LSB core spec 3.1, section 20.2)
#
CMD_PATT="Dcassandra-pidfile=.*cassandra\.pid"
is_running()
{
if [ -f $PIDFILE ]; then
pid=`cat $PIDFILE`
grep -Eq "$CMD_PATT" "/proc/$pid/cmdline" 2>/dev/null && return 0
return 1
fi
return 3
}
#
# Function that starts the daemon/service
#
do_start()
{
# Return
# 0 if daemon has been started
# 1 if daemon was already running
# 2 if daemon could not be started
ulimit -l unlimited
ulimit -n "$FD_LIMIT"
cassandra_home=`getent passwd cassandra | awk -F ':' '{ print $6; }'`
heap_dump_f="$cassandra_home/java_`date +%s`.hprof"
error_log_f="$cassandra_home/hs_err_`date +%s`.log"
[ -e `dirname "$PIDFILE"` ] || \
install -d -ocassandra -gcassandra -m755 `dirname $PIDFILE`
start-stop-daemon -S -c cassandra -a /opt/cassandra/bin/cassandra -q -p "$PIDFILE" -t >/dev/null || return 1
start-stop-daemon -S -c cassandra -a /opt/cassandra/bin/cassandra -b -p "$PIDFILE" -- \
-p "$PIDFILE" -H "$heap_dump_f" -E "$error_log_f" >/dev/null || return 2
}
#
# Function that stops the daemon/service
#
do_stop()
{
# Return
# 0 if daemon has been stopped
# 1 if daemon was already stopped
# 2 if daemon could not be stopped
# other if a failure occurred
start-stop-daemon -K -p "$PIDFILE" -R TERM/30/KILL/5 >/dev/null
RET=$?
rm -f "$PIDFILE"
return $RET
}
case "$1" in
start)
[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
do_start
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
stop)
[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
do_stop
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
restart|force-reload)
log_daemon_msg "Restarting $DESC" "$NAME"
do_stop
case "$?" in
0|1)
do_start
case "$?" in
0) log_end_msg 0 ;;
1) log_end_msg 1 ;; # Old process is still running
*) log_end_msg 1 ;; # Failed to start
esac
;;
*)
# Failed to stop
log_end_msg 1
;;
esac
;;
status)
is_running
stat=$?
case "$stat" in
0) log_success_msg "$DESC is running" ;;
1) log_failure_msg "could not access pidfile for $DESC" ;;
*) log_success_msg "$DESC is not running" ;;
esac
exit "$stat"
;;
*)
echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload|status}" >&2
exit 3
;;
esac
:
# vi:ai sw=4 ts=4 tw=0 et
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