prometheus.sles.erb

#!/bin/bash
#
#       /etc/rc.d/init.d/prometheus
#
#       Daemonize the prometheus monitoring tool.
#
### BEGIN INIT INFO
# Provides:          prometheus
# Required-Start:    network
# Should-Start:      $null
# Required-Stop:     $null
# Should-Stop:	     $null
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud.
# Description:       Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud.
### END INIT INFO

. /etc/rc.status

rc_reset

PROMETHEUS_BIN=<%= scope.lookupvar('prometheus::server::bin_dir') %>/prometheus
CONFIG_FILE=<%= scope.lookupvar('prometheus::server::config_dir') %>/<%= scope.lookupvar('prometheus::server::server::configname') %>
LOG_FILE=/var/log/prometheus


# read settings like GOMAXPROCS from "/etc/sysconfig/prometheus"
[ -e /etc/sysconfig/prometheus ] && . /etc/sysconfig/prometheus

export GOMAXPROCS=${GOMAXPROCS:-2}


case "$1" in
    start)
        echo -n "Starting prometheus "
        ## Start daemon with startproc(8). If this fails
        ## the return value is set appropriately by startproc.
        startproc $PROMETHEUS_BIN <%= @daemon_flags.join(" \\\n          ") %> \
          <%= scope.lookupvar('prometheus::server::extra_options') %> >> "$LOG_FILE"

        # Remember status and be verbose
        rc_status -v
        ;;
    stop)
        echo -n "Shutting down prometheus "
        ## Stop daemon with killproc(8) and if this fails
        ## killproc sets the return value according to LSB.

        killproc -TERM $PROMETHEUS_BIN

        # Remember status and be verbose
        rc_status -v
        ;;
    restart)
        ## Stop the service and regardless of whether it was
        ## running or not, start it again.
        $0 stop
        $0 start

        # Remember status and be quiet
        rc_status
        ;;
    reload)
        # If it supports signaling:
        echo -n "Reload service prometheus "
        killproc -HUP $PROMETHEUS_BIN
        #touch /var/run/prometheus.pid
        rc_status -v

        ## Otherwise if it does not support reload:
        #rc_failed 3
        #rc_status -v
        ;;
    status)
        echo -n "Checking for service prometheus "
        ## 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.
        checkproc $PROMETHEUS_BIN
        # NOTE: rc_status knows that we called this init script with
        # "status" option and adapts its messages accordingly.
        rc_status -v
        ;;
    *)
        ## If no parameters are given, print which are avaiable.
        echo "Usage: $0 {start|stop|status|restart|reload}"
        exit 1
        ;;
esac

rc_exit