pt-kill.init

   1 #!/bin/sh
   2 #
   3 # pt-kill       This shell script takes care of starting and stopping the pt-kill services.
   4 #
   5 # chkconfig:    345 60 40
   6 #
   7 # description: pt-kill stops long running MySQL queries
   8 # processname:  pt-kill
   9
  10 # Source function library
  11 . /etc/rc.d/init.d/functions
  12
  13 # Get network config
  14 . /etc/sysconfig/network
  15
  16 # Check that networking is up.
  17 if is_yes "${NETWORKING}"; then
  18         if [ ! -f /var/lock/subsys/network -a "$1" != stop -a "$1" != status ]; then
  19                 msg_network_down "pt-kill"
  20                 exit 1
  21         fi
  22 else
  23         exit 0
  24 fi
  25
  26 config=/etc/percona-toolkit/pt-kill.conf
  27 sentinel=/var/run/percona-toolkit/pt-kill.sentinel
  28 pidfile=/var/run/percona-toolkit/pt-kill.pid
  29 user=percona-toolkit
  30 # use "empty" DSN, so it uses my.cnf settings
  31 dsn=';'
  32
  33 # Get service config - may override defaults
  34 [ -f /etc/sysconfig/pt-kill ] && . /etc/sysconfig/pt-kill
  35
  36 start() {
  37         # Check if the service is already running?
  38         if [ -f /var/lock/subsys/pt-kill ]; then
  39                 msg_already_running "pt-kill"
  40                 return
  41         fi
  42
  43         msg_starting "pt-kill"
  44         # FIXME: instead of removing, fix stop process
  45         rm -f $sentinel
  46         # use RC_LOGGING=no, because we need to escape ";" from shell
  47         RC_LOGGING=no \
  48         daemon --user $user --redirfds \
  49                 /usr/bin/pt-kill --config $config --daemonize --pid $pidfile --sentinel $sentinel "$dsn"
  50         RETVAL=$?
  51
  52         # workaround for lack of exit status check:
  53         # https://bugs.launchpad.net/percona-toolkit/+bug/1314500
  54         [ ! -f "$pidfile" -a $RETVAL = 0 ] && RETVAL=1
  55
  56         [ $RETVAL -eq 0 ] && touch /var/lock/subsys/pt-kill
  57 }
  58
  59 stop() {
  60         if [ ! -f /var/lock/subsys/pt-kill ]; then
  61                 msg_not_running "pt-kill"
  62                 return
  63         fi
  64
  65         # Stop daemons.
  66         msg_stopping "pt-kill"
  67         run_cmd --user $user "pt-kill" /usr/bin/pt-kill --config $config --stop --sentinel $sentinel
  68         # FIXME: wait for sentinel and remove it
  69         rm -f /var/lock/subsys/pt-kill
  70 }
  71
  72 condrestart() {
  73         if [ ! -f /var/lock/subsys/pt-kill ]; then
  74                 msg_not_running "pt-kill"
  75                 RETVAL=$1
  76                 return
  77         fi
  78
  79         stop
  80         start
  81 }
  82
  83 RETVAL=0
  84 # See how we were called.
  85 case "$1" in
  86   start)
  87         start
  88         ;;
  89   stop)
  90         stop
  91         ;;
  92   restart)
  93         stop
  94         start
  95         ;;
  96   try-restart)
  97         condrestart 0
  98         ;;
  99   force-reload)
 100         condrestart 7
 101         ;;
 102   status)
 103         status --pidfile $pidfile pt-kill
 104         RETVAL=$?
 105         ;;
 106   *)
 107         msg_usage "$0 {start|stop|restart|try-restart|force-reload|status}"
 108         exit 3
 109 esac
 110
 111 exit $RETVAL