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#!/bin/bash
# mongod - Startup script for mongod
# chkconfig: 35 85 15
# description: Mongo is a scalable, document-oriented database.
# processname: mongod
# config: /etc/mongod.conf
. /etc/rc.d/init.d/functions
PIDFILEPATH="/var/run/mongodb/mongod.pid"
PIDDIR=`dirname $PIDFILEPATH`
# NOTE: if you change any OPTIONS here, you get what you pay for:
# this script assumes all options are in the config file.
CONFIGFILE="/etc/mongod.conf"
OPTIONS=" -f $CONFIGFILE --fork --pidfilepath $PIDFILEPATH"
mongod=${MONGOD-/usr/bin/mongod}
MONGO_USER=mongod
MONGO_GROUP=mongod
# All variables set before this point can be overridden by users, by
# setting them directly in the SYSCONFIG file. Use this to explicitly
# override these values, at your own risk.
SYSCONFIG="/etc/sysconfig/mongod"
if [ -f "$SYSCONFIG" ]; then
. "$SYSCONFIG"
fi
# Handle NUMA access to CPUs (SERVER-3574)
# This verifies the existence of numactl as well as testing that the command works
NUMACTL_ARGS="--interleave=all"
if which numactl >/dev/null 2>/dev/null && numactl $NUMACTL_ARGS ls / >/dev/null 2>/dev/null
then
NUMACTL="numactl $NUMACTL_ARGS"
else
NUMACTL=""
fi
start()
{
# Make sure the default pidfile directory exists
if [ ! -d $PIDDIR ]; then
install -d -m 0755 -o $MONGO_USER -g $MONGO_GROUP $PIDDIR
fi
# Make sure the pidfile does not exist
if [ -f "$PIDFILEPATH" ]; then
echo "Error starting mongod. $PIDFILEPATH exists."
RETVAL=1
return
fi
# Recommended ulimit values for mongod or mongos
# See https://docs.mongodb.com/manual/reference/ulimit/#recommended-ulimit-settings
#
ulimit -f unlimited
ulimit -t unlimited
ulimit -v unlimited
ulimit -n 64000
ulimit -m unlimited
ulimit -u 64000
ulimit -l unlimited
echo -n $"Starting mongod: "
daemon --user "$MONGO_USER" --check $mongod "$NUMACTL $mongod $OPTIONS >/dev/null 2>&1"
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && touch /var/lock/subsys/mongod
}
stop()
{
echo -n $"Stopping mongod: "
mongo_killproc "$PIDFILEPATH" $mongod
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/mongod
}
restart () {
stop
start
}
# Send TERM signal to process and wait up to 300 seconds for process to go away.
# If process is still alive after 300 seconds, send KILL signal.
# Built-in killproc() (found in /etc/init.d/functions) is on certain versions of Linux
# where it sleeps for the full $delay seconds if process does not respond fast enough to
# the initial TERM signal.
mongo_killproc()
{
local pid_file=$1
local procname=$2
local -i delay=300
local -i duration=10
local pid=`pidofproc -p "${pid_file}" ${procname}`
if [ ! -f "${pid_file}" ]; then
echo "No PID file detected, nothing to stop"
return 0
fi
# Per the man page the process name should always be the second
# field. In our case mongod is wrapped in parens hence the parens in
# the if condition below.
local stat_procname=`cat /proc/$pid/stat | cut -d" " -f2`
# $procname is the full path to the mongod binary but the process
# name will only match the binary's file name.
local binary_name=`basename $procname`
if [ "($binary_name)" != "$stat_procname" ]; then
echo "PID file may have been tampered with, refusing to kill process"
echo "Expected (${binary_name}) but found ${stat_procname}"
return 1
fi
# This doesn't actually "daemonize" this process. All this function
# does (defined in /etc/init.d/function) is run a process as another
# user in a way that doesn't require sudo or other packages which
# are not guaranteed to exist on any given system.
#
# The check flag here can be ignored it doesn't do anything except
# prevent the daemon function's PID checking from throwing an error.
daemon --check "$mongod" --user "$MONGO_USER" "kill -TERM $pid >/dev/null 2>&1"
usleep 100000
local -i x=0
while [ $x -le $delay ] && checkpid $pid; do
sleep $duration
x=$(( $x + $duration))
done
daemon --check "$mongod" --user "$MONGO_USER" "kill -KILL $pid >/dev/null 2>&1"
usleep 100000
checkpid $pid # returns 0 only if the process exists
local RC=$?
[ "$RC" -eq 0 ] && failure "${procname} shutdown" || rm -f "${pid_file}"; success "${procname} shutdown"
RC=$((! $RC)) # invert return code so we return 0 when process is dead.
return $RC
}
RETVAL=0
case "$1" in
start)
start
;;
stop)
stop
;;
restart|reload|force-reload)
restart
;;
condrestart)
[ -f /var/lock/subsys/mongod ] && restart || :
;;
status)
status $mongod
RETVAL=$?
;;
*)
echo "Usage: $0 {start|stop|status|restart|reload|force-reload|condrestart}"
RETVAL=1
esac
exit $RETVAL
|
