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File haproxy.init of Package haproxy.6459
#!/bin/sh # ### BEGIN INIT INFO # Provides: haproxy # Required-Start: $syslog $remote_fs # Should-Start: $time ypbind sendmail # Required-Stop: $syslog $remote_fs # Should-Stop: $time ypbind sendmail # Default-Start: 3 5 # Default-Stop: 0 1 2 6 # Short-Description: haproxy # Description: Start haproxy a reliable, high performance TCP/HTTP load balancer ### END INIT INFO # # Any extensions to the keywords given above should be preceeded by # X-VendorTag- (X-UnitedLinux- X-SuSE- for us) according to LSB. # # Notes on Required-Start/Should-Start: # * There are two different issues that are solved by Required-Start # and Should-Start # (a) Hard dependencies: This is used by the runlevel editor to determine # which services absolutely need to be started to make the start of # this service make sense. Example: nfsserver should have # Required-Start: $portmap # Also, required services are started before the dependent ones. # The runlevel editor will warn about such missing hard dependencies # and suggest enabling. During system startup, you may expect an error, # if the dependency is not fulfilled. # (b) Specifying the init script ordering, not real (hard) dependencies. # This is needed by insserv to determine which service should be # started first (and at a later stage what services can be started # in parallel). The tag Should-Start: is used for this. # It tells, that if a service is available, it should be started # before. If not, never mind. # * When specifying hard dependencies or ordering requirements, you can # use names of services (contents of their Provides: section) # or pseudo names starting with a $. The following ones are available # according to LSB (1.1): # $local_fs all local file systems are mounted # (most services should need this!) # $remote_fs all remote file systems are mounted # (note that /usr may be remote, so # many services should Require this!) # $syslog system logging facility up # $network low level networking (eth card, ...) # $named hostname resolution available # $netdaemons all network daemons are running # The $netdaemons pseudo service has been removed in LSB 1.2. # For now, we still offer it for backward compatibility. # These are new (LSB 1.2): # $time the system time has been set correctly # $portmap SunRPC portmapping service available # UnitedLinux extensions: # $ALL indicates that a script should be inserted # at the end # * The services specified in the stop tags # (Required-Stop/Should-Stop) # specify which services need to be still running when this service # is shut down. Often the entries there are just copies or a subset # from the respective start tag. # * Should-Start/Stop are now part of LSB as of 2.0, # formerly SUSE/Unitedlinux used X-UnitedLinux-Should-Start/-Stop. # insserv does support both variants. # * X-UnitedLinux-Default-Enabled: yes/no is used at installation time # (%fillup_and_insserv macro in %post of many RPMs) to specify whether # a startup script should default to be enabled after installation. # It's not used by insserv. # # Note on runlevels: # 0 - halt/poweroff 6 - reboot # 1 - single user 2 - multiuser without network exported # 3 - multiuser w/ network (text mode) 5 - multiuser w/ network and X11 (xdm) # # Note on script names: # http://www.linuxbase.org/spec/refspecs/LSB_1.3.0/gLSB/gLSB/scrptnames.html # A registry has been set up to manage the init script namespace. # http://www.lanana.org/ # Please use the names already registered or register one or use a # vendor prefix. # Check for missing binaries (stale symlinks should not happen) # Note: Special treatment of stop for LSB conformance HAPROXY_BIN=/usr/sbin/haproxy test -x $HAPROXY_BIN || { echo "$HAPROXY_BIN not installed"; if [ "$1" = "stop" ]; then exit 0; else exit 5; fi; } HAPROXY_PID="/var/run/haproxy.pid" HAPROXY_CONF="/etc/haproxy/haproxy.cfg" ## Check for existence of needed config file and read it #HAPROXY_CONFIG=/etc/sysconfig/haproxy #test -r $HAPROXY_CONFIG || { echo "$HAPROXY_CONFIG not existing"; # if [ "$1" = "stop" ]; then exit 0; # else exit 6; fi; } # ## Read config #. $HAPROXY_CONFIG # Source LSB init functions # providing start_daemon, killproc, pidofproc, # log_success_msg, log_failure_msg and log_warning_msg. # This is currently not used by UnitedLinux based distributions and # not needed for init scripts for UnitedLinux only. If it is used, # the functions from rc.status should not be sourced or used. #. /lib/lsb/init-functions # Shell functions sourced from /etc/rc.status: # rc_check check and set local and overall rc status # rc_status check and set local and overall rc status # rc_status -v be verbose in local rc status and clear it afterwards # rc_status -v -r ditto and clear both the local and overall rc status # rc_status -s display "skipped" and exit with status 3 # rc_status -u display "unused" and exit with status 3 # rc_failed set local and overall rc status to failed # rc_failed <num> set local and overall rc status to <num> # rc_reset clear both the local and overall rc status # rc_exit exit appropriate to overall rc status # rc_active checks whether a service is activated by symlinks . /etc/rc.status # Reset status of this service rc_reset # Return values acc. to LSB for all commands but status: # 0 - success # 1 - generic or unspecified error # 2 - invalid or excess argument(s) # 3 - unimplemented feature (e.g. "reload") # 4 - user had insufficient privileges # 5 - program is not installed # 6 - program is not configured # 7 - program is not running # 8--199 - reserved (8--99 LSB, 100--149 distrib, 150--199 appl) # # Note that starting an already running service, stopping # or restarting a not-running service as well as the restart # with force-reload (in case signaling is not supported) are # considered a success. function haproxy_check() { HAPROXY_CONFIG_CHECK="$($HAPROXY_BIN -c -q -f $HAPROXY_CONF 2>&1)" if [ $? -ne 0 ] ; then echo "" >&2 echo "$HAPROXY_CONFIG_CHECK" >&2 rc_failed rc_status -v exit 1 else return 0 fi } case "$1" in start) echo -n "Starting haproxy " ## Start daemon with startproc(8). If this fails ## the return value is set appropriately by startproc. haproxy_check /sbin/startproc $HAPROXY_BIN -D -f $HAPROXY_CONF -p $HAPROXY_PID # Remember status and be verbose rc_status -v ;; stop) echo -n "Shutting down haproxy " ## Stop daemon with killproc(8) and if this fails ## killproc sets the return value according to LSB. /sbin/killproc -TERM $HAPROXY_BIN # Remember status and be verbose rc_status -v ;; try-restart|condrestart) ## Do a restart only if the service was active before. ## Note: try-restart is now part of LSB (as of 1.9). ## RH has a similar command named condrestart. if test "$1" = "condrestart"; then echo "${attn} Use try-restart ${done}(LSB)${attn} rather than condrestart ${warn}(RH)${norm}" fi $0 status if test $? = 0; then # we us reload here for a graceful restart during update $0 reload else rc_reset # Not running is not a failure. fi # Remember status and be quiet rc_status ;; restart) ## Stop the service and regardless of whether it was ## running or not, start it again. haproxy_check $0 stop $0 start # Remember status and be quiet rc_status ;; check) ## Stop the service and regardless of whether it was ## running or not, start it again. echo -n "Checking config of haproxy " haproxy_check rc_status -v ;; reload|force-reload) ## Like force-reload, but if daemon does not support ## signaling, do nothing (!) haproxy_check # If it supports signaling: echo -n "Reload service haproxy " $HAPROXY_BIN -p $HAPROXY_PID -D -f $HAPROXY_CONF -sf $(cat $HAPROXY_PID) rc_status -v ;; status) echo -n "Checking for service haproxy " ## Check status with checkproc(8), if process is running ## checkproc will return with exit status 0. # Return value is slightly different for the status command: # 0 - service up and running # 1 - service dead, but /var/run/ pid file exists # 2 - service dead, but /var/lock/ lock file exists # 3 - service not running (unused) # 4 - service status unknown :-( # 5--199 reserved (5--99 LSB, 100--149 distro, 150--199 appl.) # NOTE: checkproc returns LSB compliant status values. /sbin/checkproc -p $HAPROXY_PID $HAPROXY_BIN # NOTE: rc_status knows that we called this init script with # "status" option and adapts its messages accordingly. rc_status -v ;; probe) ## Optional: Probe for the necessity of a reload, print out the ## argument to this init script which is required for a reload. ## Note: probe is not (yet) part of LSB (as of 1.9) test $HAPROXY_CONF -nt $HAPROXY_PID && echo reload ;; *) echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe}" exit 1 ;; esac rc_exit
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