pound.init

   1 #!/bin/sh
   2 #
   3 # pound
   4 #
   5 # chkconfig:    345 85 15
   6 # description:  reverse-proxy and load-balancer
   7 #
   8
   9 # Source function library
  10 . /etc/rc.d/init.d/functions
  11
  12 # Get network config
  13 . /etc/sysconfig/network
  14
  15 # List of instances to start.
  16 POUND_INSTANCES="pound"
  17
  18 # Get service config
  19 [ -f /etc/sysconfig/pound ] && . /etc/sysconfig/pound
  20
  21 # Check that networking is up.
  22 if is_yes "${NETWORKING}"; then
  23         if [ ! -f /var/lock/subsys/network -a "$1" != stop -a "$1" != status ]; then
  24                 msg_network_down pound
  25                 exit 1
  26         fi
  27 else
  28         exit 0
  29 fi
  30
  31 configtest() {
  32         local instance="$1"
  33         pound -c -f /etc/pound/$instance.cfg > /dev/null
  34 }
  35
  36
  37 # check if the $1 instance is up
  38 is_up() {
  39         local instance="$1"
  40         local pidfile=/var/run/pound/$instance.pid
  41         [ -f $pidfile ] || return 1
  42         local pid=$(cat $pidfile)
  43         kill -0 $pid 2>/dev/null
  44         return $?
  45 }
  46
  47 # check if any of the instances are up
  48 any_up() {
  49         local ret=1 instance pidfile
  50
  51         for pidfile in /var/run/pound/*.pid; do
  52                 [ -f "$pidfile" ] || continue
  53                 instance=${pidfile#/var/run/pound/}
  54                 instance=${instance%.pid}
  55                 is_up $instance || continue
  56                 ret=0
  57         done
  58
  59         return $ret
  60 }
  61
  62 # check if all of the instances are up
  63 all_up() {
  64         local ret=0 instance pidfile
  65
  66         for pidfile in /var/run/pound/*.pid; do
  67                 [ -f "$pidfile" ] || continue
  68                 instance=${pidfile#/var/run/pound/}
  69                 instance=${instance%.pid}
  70                 is_up $instance && continue
  71                 ret=1
  72         done
  73
  74         return $ret
  75 }
  76
  77 start() {
  78         local ret started=0 found=0 instance
  79
  80         # Check if the service is already running?
  81         if ! all_up; then
  82                 msg_starting "Pound"; started
  83                 for instance in $POUND_INSTANCES; do
  84                         show "Starting Pound instance %s" "$instance"
  85                         if is_up $instance; then
  86                                 started
  87                                 continue
  88                         fi
  89
  90                         PIDFILE=/var/run/pound/$instance.pid
  91                         start-stop-daemon --start \
  92                                 --exec /usr/sbin/pound \
  93                                 --pidfile $PIDFILE -- -v -f /etc/pound/$instance.cfg -p $PIDFILE
  94                         ret=$?
  95
  96                         if [ $ret -eq 0 ]; then
  97                                 ok
  98                                 RETVAL=$ret
  99                                 started=1
 100                                 found=1
 101                         else
 102                                 fail
 103                         fi
 104                 done
 105
 106                 [ $RETVAL -eq 0 ] && touch /var/lock/subsys/pound
 107         else
 108                 msg_already_running "Pound"
 109         fi
 110 }
 111
 112 stop() {
 113         local ret instance
 114         # Stop daemons.
 115         if any_up; then
 116                 msg_stopping "Pound"; started
 117                 for instance in $POUND_INSTANCES; do
 118                         is_up $instance || continue
 119                         show "Stopping Pound instance %s" "$instance"; busy
 120                         killproc --pidfile pound/$instance.pid pound
 121                         ret=$?
 122                 done
 123                 rm -f /var/lock/subsys/pound > /dev/null 2>&1
 124         else
 125                 msg_not_running "Pound"
 126         fi
 127 }
 128
 129 restart() {
 130         local instance
 131
 132         if any_up; then
 133                 # make up list of configured and up instances
 134                 local list
 135                 show "Checking configuration"; busy
 136                 for instance in $POUND_INSTANCES; do
 137                         # skip ones whose config fails
 138                         configtest $instance || continue
 139                         list="$list $instance"
 140                 done
 141                 ok
 142
 143                 POUND_INSTANCES=$list
 144
 145                 # nothing left or never was
 146                 [ "$list" ] || return
 147         fi
 148
 149         stop
 150         start
 151 }
 152
 153 condrestart() {
 154         if [ -f /var/lock/subsys/pound ]; then
 155                 stop
 156                 start
 157         else
 158                 msg_not_running "Pound"
 159                 RETVAL=$1
 160         fi
 161 }
 162
 163 pound_status() {
 164         local stat=1 pidfile instance
 165
 166         nls "Configured Pound instances:"
 167         echo " $POUND_INSTANCES"
 168         nls "Currently active Pound instances:"
 169         for pidfile in /var/run/pound/*.pid; do
 170                 [ -f "$pidfile" ] || continue
 171                 instance=${pidfile#/var/run/pound/}
 172                 instance=${instance%.pid}
 173                 is_up $instance && echo -n " $instance($(cat $pidfile))"
 174                 stat=0
 175         done
 176         echo ""
 177         exit $stat
 178 }
 179
 180 if [ "$1" != status -a "$2" ]; then
 181         POUND_INSTANCES="$2"
 182 fi
 183
 184 RETVAL=0
 185 # See how we were called.
 186 case "$1" in
 187   start)
 188         start
 189         ;;
 190   stop)
 191         stop
 192         ;;
 193   restart)
 194         restart
 195         ;;
 196   try-restart)
 197         condrestart 0
 198         ;;
 199   force-reload)
 200         condrestart 7
 201         ;;
 202   flush-logs)
 203         if [ -f /var/lock/subsys/pound ]; then
 204                 for instance in $POUND_INSTANCES; do
 205                         show "Rotating Pound logs for %s instance" $instance
 206                         killproc --pidfile /var/run/pound/$instance.pid pound -USR1
 207                         ret=$?
 208                         if [ $ret != 0 ]; then
 209                                 RETVAL=$ret
 210                         fi
 211                 done
 212         else
 213                 msg_not_running "Pound"
 214                 RETVAL=7
 215         fi
 216         ;;
 217   status)
 218         pound_status
 219         ;;
 220   *)
 221         msg_usage "$0 {start|stop|restart|try-restart|force-reload|flush-logs|status} [INSTANCE NAMES]"
 222         exit 3
 223 esac
 224
 225 exit $RETVAL