src/pmmgr/rc_pmmgr

   1 #! /bin/sh
   2 #
   3 # Copyright (c) 2013-2015 Red Hat.
   4 # Copyright (c) 2005 Silicon Graphics, Inc.  All Rights Reserved.
   5 #
   6 # This program is free software; you can redistribute it and/or modify it
   7 # under the terms of the GNU General Public License as published by the
   8 # Free Software Foundation; either version 2 of the License, or (at your
   9 # option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful, but
  12 # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13 # or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 # for more details.
  15 #
  16 # Start or Stop the Performance Co-Pilot (PCP) daemon manager
  17 #
  18 # The following is for chkconfig on RedHat based systems
  19 # chkconfig: 2345 95 05
  20 # description: pmmgr is a daemon manager for the Performance Co-Pilot (PCP)
  21 #
  22 # The following is for insserv(1) based systems,
  23 # e.g. SuSE, where chkconfig is a perl script.
  24 ### BEGIN INIT INFO
  25 # Provides:       pmmgr
  26 # Required-Start: $remote_fs
  27 # Should-Start: $local_fs $network $syslog $time $pmcd
  28 # Required-Stop: $remote_fs
  29 # Should-Stop:  $local_fs $network $syslog $pmcd
  30 # Default-Start:  2 3 4 5
  31 # Default-Stop:   0 1 6
  32 # Short-Description: Control pmmgr (daemon manager for PCP)
  33 # Description:       Configure and control pmmgr (a daemon manager for the Performance Co-Pilot)
  34 ### END INIT INFO
  35
  36 . $PCP_DIR/etc/pcp.env
  37 . $PCP_SHARE_DIR/lib/rc-proc.sh
  38
  39 PMMGR=$PCP_BINADM_DIR/pmmgr
  40 PMMGROPTS=$PCP_PMMGROPTIONS_PATH
  41 RUNDIR=$PCP_LOG_DIR/pmmgr
  42 pmprog=$PCP_RC_DIR/pmmgr
  43 prog=$PCP_RC_DIR/`basename $0`
  44
  45 tmp=`mktemp -d /var/tmp/pcp.XXXXXXXXX` || exit 1
  46 status=1
  47 trap "rm -rf $tmp; exit \$status" 0 1 2 3 15
  48
  49 if [ $pmprog = $prog ]
  50 then
  51     VERBOSE_CTL=on
  52 else
  53     VERBOSE_CTL=off
  54 fi
  55
  56 case "$PCP_PLATFORM"
  57 in
  58     mingw)
  59         # nothing we can usefully do here, skip the test
  60         #
  61         ;;
  62
  63     *)
  64         # standard Unix/Linux style test
  65         #
  66         ID=id
  67         test -f /usr/xpg4/bin/id && ID=/usr/xpg4/bin/id
  68
  69         IAM=`$ID -u 2>/dev/null`
  70         if [ -z "$IAM" ]
  71         then
  72             # do it the hardway
  73             #
  74             IAM=`$ID | sed -e 's/.*uid=//' -e 's/(.*//'`
  75         fi
  76         ;;
  77 esac
  78
  79 _shutdown()
  80 {
  81     # Is pmmgr running?
  82     #
  83     _get_pids_by_name pmmgr >$tmp/tmp
  84     if [ ! -s $tmp/tmp ]
  85     then
  86         [ "$1" = verbose ] && echo "$pmprog: pmmgr not running"
  87         return 0
  88     fi
  89
  90     # Send pmmgr a SIGTERM, which is noted as a pending shutdown.
  91     # When finished the currently active request, pmmgr will close any
  92     # connections and then exit.
  93     # Wait for pmmgr to terminate.
  94     #
  95     pmsignal -p -s TERM pmmgr > /dev/null 2>&1
  96     $ECHO $PCP_ECHO_N "Waiting for pmmgr to terminate ...""$PCP_ECHO_C"
  97     gone=0
  98     for i in 1 2 3 4 5 6
  99     do
 100         sleep 3
 101         _get_pids_by_name pmmgr >$tmp/tmp
 102         if [ ! -s $tmp/tmp ]
 103         then
 104             gone=1
 105             break
 106         fi
 107
 108         # If pmmgr doesn't go in 15 seconds, SIGKILL and sleep 1 more time
 109         # to allow any clients reading from pmmgr sockets to fail so that
 110         # socket doesn't end up in TIME_WAIT or somesuch.
 111         #
 112         if [ $i = 5 ]
 113         then
 114             $ECHO
 115             echo "Process ..."
 116             $PCP_PS_PROG $PCP_PS_ALL_FLAGS >$tmp/ps
 117             sed 1q $tmp/ps
 118             for pid in `cat $tmp/tmp`
 119             do
 120                 $PCP_AWK_PROG <$tmp/ps "\$2 == $pid { print }"
 121             done
 122             echo "$prog: Warning: Forcing pmmgr to terminate!"
 123             pmsignal -a -s KILL pmmgr > /dev/null 2>&1
 124         else
 125             $ECHO $PCP_ECHO_N ".""$PCP_ECHO_C"
 126         fi
 127     done
 128     if [ $gone != 1 ]   # It just WON'T DIE, give up.
 129     then
 130         echo "Process ..."
 131         cat $tmp/tmp
 132         echo "$prog: Warning: pmmgr won't die!"
 133         exit
 134     fi
 135     $RC_STATUS -v
 136     pmpost "stop pmmgr from $pmprog"
 137 }
 138
 139 _usage()
 140 {
 141     echo "Usage: $pmprog [-v] {start|restart|condrestart|stop|status|reload|force-reload}"
 142 }
 143
 144 while getopts v c
 145 do
 146     case $c
 147     in
 148         v)  # force verbose
 149             VERBOSE_CTL=on
 150             ;;
 151
 152         *)
 153             _usage
 154             exit 1
 155             ;;
 156     esac
 157 done
 158 shift `expr $OPTIND - 1`
 159
 160 if [ $VERBOSE_CTL = on ]
 161 then                            # For a verbose startup and shutdown
 162     ECHO=$PCP_ECHO_PROG
 163 else                            # For a quiet startup and shutdown
 164     ECHO=:
 165 fi
 166
 167 if [ "$IAM" != 0 -a "$1" != "status" ]
 168 then
 169     if [ -n "$PCP_DIR" ]
 170     then
 171         : running in a non-default installation, do not need to be root
 172     else
 173         echo "$prog:"'
 174 Error: You must be root (uid 0) to start or stop the PCP pmmgr daemon.'
 175         exit
 176     fi
 177 fi
 178
 179 # First reset status of this service
 180 $RC_RESET
 181
 182 # Return values acc. to LSB for all commands but status:
 183 # 0 - success
 184 # 1 - misc error
 185 # 2 - invalid or excess args
 186 # 3 - unimplemented feature (e.g. reload)
 187 # 4 - insufficient privilege
 188 # 5 - program not installed
 189 # 6 - program not configured
 190 #
 191 # Note that starting an already running service, stopping
 192 # or restarting a not-running service as well as the restart
 193 # with force-reload (in case signalling is not supported) are
 194 # considered a success.
 195 case "$1" in
 196
 197   'start'|'restart'|'condrestart'|'reload'|'force-reload')
 198         if [ "$1" = "condrestart" ] && ! is_chkconfig_on pmmgr
 199         then
 200             status=0
 201             exit
 202         fi
 203
 204         _shutdown quietly
 205
 206         # pmmgr messages should go to stderr, not the GUI notifiers
 207         #
 208         unset PCP_STDERR
 209
 210         if [ -x $PMMGR ]
 211         then
 212             if [ ! -f $PMMGROPTS ]
 213             then
 214                 echo "$prog:"'
 215 Error: pmmgr control file "$PMMGROPTS" is missing, cannot start pmmgr.'
 216                 exit
 217             fi
 218             # create directory housing daemon pid file
 219             if [ ! -d "$PCP_RUN_DIR" ]
 220             then
 221                 mkdir -p -m 775 "$PCP_RUN_DIR"
 222                 chown $PCP_USER:$PCP_GROUP "$PCP_RUN_DIR"
 223             fi
 224             # create directory which will serve as cwd
 225             if [ ! -d "$RUNDIR" ]
 226             then
 227                 mkdir -p -m 775 "$RUNDIR"
 228                 chown $PCP_USER:$PCP_GROUP "$RUNDIR"
 229             fi
 230             cd $RUNDIR
 231
 232             # salvage the previous versions of any pmmgr
 233             #
 234             if [ -f pmmgr.log ]
 235             then
 236                 rm -f pmmgr.log.prev
 237                 mv pmmgr.log pmmgr.log.prev
 238             fi
 239
 240             $ECHO $PCP_ECHO_N "Starting pmmgr ..." "$PCP_ECHO_C"
 241             # options file processing ...
 242             # only consider lines which start with a hyphen
 243             # get rid of the -f option
 244             # ensure multiple lines concat onto 1 line
 245             OPTS=`sed <$PMMGROPTS 2>/dev/null \
 246                             -e '/^[^-]/d' \
 247                             -e 's/^/ /' \
 248                             -e 's/$/ /' \
 249                             -e 's/ -f / /g' \
 250                             -e 's/^ //' \
 251                             -e 's/ $//' \
 252                     | tr '\012' ' ' `
 253
 254             # environment stuff
 255             #
 256             eval `sed -e 's/"/\\"/g' $PMMGROPTS \
 257             | awk -F= '
 258 BEGIN                   { exports="" }
 259 /^[A-Z]/ && NF == 2     { exports=exports" "$1
 260                           printf "%s=${%s:-\"%s\"}\n", $1, $1, $2
 261                         }
 262 END                     { if (exports != "") print "export", exports }'`
 263
 264             $PMMGR -l pmmgr.log $OPTS &
 265             $RC_STATUS -v
 266
 267             pmpost "start pmmgr from $pmprog"
 268
 269             # finally, stop here if running in a container
 270             [ -z "$PCP_CONTAINER_IMAGE" ] || exec $PCP_BINADM_DIR/pmpause
 271         fi
 272         status=0
 273         ;;
 274
 275   'stop')
 276         _shutdown
 277         status=0
 278         ;;
 279
 280   'status')
 281         # NOTE: $RC_CHECKPROC returns LSB compliant status values.
 282         $ECHO $PCP_ECHO_N "Checking for pmmgr:" "$PCP_ECHO_C"
 283         if [ -r /etc/rc.status ]
 284         then
 285             # SuSE
 286             $RC_CHECKPROC $PMMGR
 287             $RC_STATUS -v
 288             status=$?
 289         else
 290             # not SuSE
 291             $RC_CHECKPROC $PMMGR
 292             status=$?
 293             if [ $status -eq 0 ]
 294             then
 295                 $ECHO running
 296             else
 297                 $ECHO stopped
 298             fi
 299         fi
 300         ;;
 301
 302   *)
 303         [ -z "$PCP_CONTAINER_IMAGE" ] || exec "$@"
 304         _usage
 305         ;;
 306 esac
 307