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         # NOTE: disable --redirfds to be able to see connect errors
  48         RC_LOGGING=no \
  49         daemon --user $user --redirfds \
  50                 /usr/bin/pt-kill --config $config --daemonize --pid $pidfile --sentinel $sentinel "$dsn"
  51         RETVAL=$?
  52
  53         # workaround for lack of exit status check:
  54         # https://bugs.launchpad.net/percona-toolkit/+bug/1314500
  55         [ ! -f "$pidfile" -a $RETVAL = 0 ] && RETVAL=1
  56
  57         [ $RETVAL -eq 0 ] && touch /var/lock/subsys/pt-kill
  58 }
  59
  60 stop() {
  61         if [ ! -f /var/lock/subsys/pt-kill ]; then
  62                 msg_not_running "pt-kill"
  63                 return
  64         fi
  65
  66         # Stop daemons.
  67         msg_stopping "pt-kill"
  68         run_cmd --user $user "pt-kill" /usr/bin/pt-kill --config $config --stop --sentinel $sentinel
  69         # FIXME: wait for sentinel and remove it
  70         rm -f /var/lock/subsys/pt-kill
  71 }
  72
  73 condrestart() {
  74         if [ ! -f /var/lock/subsys/pt-kill ]; then
  75                 msg_not_running "pt-kill"
  76                 RETVAL=$1
  77                 return
  78         fi
  79
  80         stop
  81         start
  82 }
  83
  84 RETVAL=0
  85 # See how we were called.
  86 case "$1" in
  87   start)
  88         start
  89         ;;
  90   stop)
  91         stop
  92         ;;
  93   restart)
  94         stop
  95         start
  96         ;;
  97   try-restart)
  98         condrestart 0
  99         ;;
 100   force-reload)
 101         condrestart 7
 102         ;;
 103   status)
 104         status --pidfile $pidfile pt-kill
 105         RETVAL=$?
 106         ;;
 107   *)
 108         msg_usage "$0 {start|stop|restart|try-restart|force-reload|status}"
 109         exit 3
 110 esac
 111
 112 exit $RETVAL