Init Script RHEL update

[volga629]

Hello Everyone, I updated init script for RHEL based systems. As far I understand daemon garbd is not supports -HUP, this options will be nice to have to purpose like log rotate. Please review the change.

Configuration file /etc/sysconfig/garb

#Copyright (C) 2012 Coedership Oy
# This config file is to be sourced by garb service script.

# A space-separated list of node addresses (address[:port]) in the cluster
GALERA_NODES=""

# Galera cluster name, should be the same as on the rest of the nodes. Example: "-g groupname"
GALERA_GROUP="-g mygroupname"

# Galera node name. Example: "-n mynode"
GALERA_NODE_NAME="-n my-node"

# Optional Galera internal options string (e.g. SSL settings)
# see http://www.codership.com/wiki/doku.php?id=galera_parameters. Example: -o "myoption; myoption2=1"
GALERA_OPTIONS="-o evs.suspect_timeout=PT30S; socket.ssl=yes; socket.ssl_compression=yes; socket.ssl_ca=; socket.ssl_cert=; socket.ssl_key="
# Log file for garbd. Optional, by default logs to syslog. Example: -l "path to my log"
LOG_FILE="-l /var/log/galera/galera.log"

Init script

#!/bin/bash
#
# Copyright (C) 2012-2013 Codership Oy <info@codership.com>
#
# init.d script for garbd
#
# chkconfig: - 99 01
# config: /etc/sysconfig/garb | /etc/default/garb
#
#### BEGIN INIT INFO
# Provides:          garbd
# Required-Start:    $network
# Should-Start:
# Required-Stop:     $network
# Should-Stop:
# Default-Start:     3 4 5
# Default-Stop:      0 1 2 6
# Short-Description: Galera Arbitrator Daemon
# Description:       Galera Arbitrator Daemon
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Config file
. /etc/sysconfig/garb

# Check that networking is enabled.
[ ${NETWORKING} = "no" ] && exit 1

RETVAL=0
pidfile="/var/run/garbd.pid"
garbd=${GARBD-/usr/bin/garbd}
prog="garbd"

start_prog() {
        # Check that node addresses are configured
    if [ -z "${GALERA_NODES}" ]; then
        echo "List of GALERA_NODES is not configured"
        exit 1
    fi
    if [ -z "${GALERA_GROUP}" ]; then
        echo "GALERA_GROUP name is not configured"
        exit 1
    fi

    GALERA_PORT=${GALERA_PORT:-4567}

    # Find a working node
    for ADDRESS in ${GALERA_NODES} 0; do
        HOST=$(echo $ADDRESS | cut -d \: -f 1 )
        PORT=$(echo $ADDRESS | cut -d \: -f 2 )
        PORT=${PORT:-$GALERA_PORT}
        nc -z $HOST $PORT >/dev/null && break
    done
    if [ ${ADDRESS} == "0" ]; then
        echo "None of the nodes in $GALERA_NODES is accessible"
        exit 1
    fi

    OPTIONS="-d -a gcomm://${ADDRESS}"
        GALERA_OPTION="\"$GALERA_OPTIONS\""
    [ -n "${GALERA_GROUP#'-g'*}" ]
    [ -n "${GALERA_NODE_NAME#'-n'*}" ]
    [ -n "${LOG_FILE#'-l'*}" ]

        echo -n $"Starting $prog: "
        daemon --pidfile=${pidfile} ${garbd} $OPTIONS ${GALERA_GROUP} ${GALERA_NODE_NAME} ${GALERA_OPTION} ${LOG_FILE}
        RETVAL=$?
        echo
        [ $RETVAL -eq 0 ] && touch /var/lock/subsys/$prog && echo "`pidof $prog`" > ${pidfile}
        echo "Galera Arbitrator running PID: "`cat ${pidfile}`

}

stop_prog() {
        echo -n $"Shutting down $prog: "
        killproc $prog
        RETVAL=$?
        echo
        [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$prog
}

# This is in question.
reload_prog() {
        echo -n $"Reloading $prog: "
        killproc -p ${pidfile} $prog -HUP
        RETVAL=$?
        echo
}

# See how we were called.
case "$1" in
  start)
    start_prog
    ;;
  stop)
    stop_prog
    ;;
  status)
    status $prog > /dev/null
        RETVAL=$?
        [ $RETVAL -eq 0 ] && echo "Galera Arbitrator running PID: "`cat ${pidfile}`
    ;;
  restart)
        stop_prog
        start_prog
    ;;
  reload)
        stop_prog
        start_prog
       ;;
  condrestart)
    if status $prog > /dev/null; then
        stop_prog
        start_prog
    fi
    ;;
  *)
    echo $"Usage: $0 {start|stop|status|restart|reload}"
    exit 2
esac

exit $RETVAL

[ayurchen]

Depends on issue #6