140 lines
3.5 KiB
Text
140 lines
3.5 KiB
Text
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#! /bin/bash
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### BEGIN INIT INFO
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# Provides: gitlab-ci-runner
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# Required-Start: $local_fs $remote_fs $network $syslog
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# Required-Stop: $local_fs $remote_fs $network $syslog
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: GitLab CI Runner init.d script
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# Description: Enables automatic start of runners at boot time in the background.
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### END INIT INFO
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APP_ROOT="/home/gitlab_ci_runner/gitlab-ci-runner"
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APP_USER="gitlab_ci_runner"
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PID_PATH="$APP_ROOT/tmp/pids"
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PROCESS_NAME="ruby ./bin/runner"
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RUNNERS_PID="$PID_PATH/runners.pid"
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RUNNERS_NUM=1 # number of runners to spawn
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START_RUNNER="nohup bundle exec ./bin/runner"
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NAME="gitlab-ci-runner"
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DESC="GitLab CI runner"
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RUNNERS_REGISTERED=0
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RUNNERS_RUNNING=0
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INIT_LOG="/var/log/gitlab_ci_runner.log"
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check_pid() {
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# Number of registered runners in PID file
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[ -f $RUNNERS_PID ] && RUNNERS_REGISTERED=`cat $RUNNERS_PID | wc -l`
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# Number of active runner processes
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RUNNERS_RUNNING=`ps -ef | grep "$PROCESS_NAME" | grep -v grep | wc -l`
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echo "Number of registered runners in PID file=$RUNNERS_REGISTERED"
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echo "Number of running runners=$RUNNERS_RUNNING"
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}
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execute() {
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sudo -u $APP_USER -H bash -l -c "$1"
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}
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start() {
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cd $APP_ROOT
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check_pid
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if [ "$RUNNERS_REGISTERED" -ne 0 -o "$RUNNERS_RUNNING" -ne 0 ]; then
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# Program is running, Exit with error code.
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echo "Error! $DESC(s) ($NAME) appear to be running already! Try stopping them first. Exiting."
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exit 1
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else
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if [ `whoami` = root ]; then
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[ ! -f $PID_PATH ] && execute "mkdir -p $PID_PATH"
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[ -f $RUNNERS_PID ] && execute "rm -f $RUNNERS_PID"
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# Spawn runners
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for (( i=1; i<=$RUNNERS_NUM; i++ ))
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do
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# Check log file
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if [ ! -f $INIT_LOG ]; then
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touch $INIT_LOG
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chown $APP_USER $INIT_LOG
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fi
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echo "Starting runner #$i"
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execute "$START_RUNNER >> $INIT_LOG 2>&1 & echo \$! >> $RUNNERS_PID"
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done
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echo "SUCCESS: Started $RUNNERS_NUM $DESC(s)."
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fi
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fi
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}
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stop() {
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check_pid
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# Exit if there are no runners
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if [ $RUNNERS_REGISTERED -eq 0 -a $RUNNERS_RUNNING -eq 0 ]; then
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echo "No runners have been found. Exiting."
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fi
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# Runners found. Check if there are any ghost runners.
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KILL_GHOSTS=0;
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if [ $RUNNERS_REGISTERED -ne $RUNNERS_RUNNING ]; then
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echo "WARNING: Numbers of registered runners don't match number of running runners. Will try to stop them all"
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echo "Registered runners=$RUNNERS_REGISTERED"
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echo "Running runners=$RUNNERS_RUNNING"
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KILL_GHOSTS=1;
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fi
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echo -n "Trying to stop registered runners..."
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if [ $RUNNERS_REGISTERED -gt 0 ]; then
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execute "cat $RUNNERS_PID | xargs kill -USR2"
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rm -f $RUNNERS_PID
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echo "OK"
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else
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echo "FAILED!"
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echo "Couldn't stop registered runners as there is no record of such in $RUNNERS_PID file".
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fi
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if [ $KILL_GHOSTS -eq 1 ]; then
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echo -ne "Trying to kill ghost runners..."
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ps -C "$PROCESS_NAME" -o "%p" h | xargs kill -USR2
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[ $? -eq 0 ] && echo "OK"
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else
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echo "No ghost runners have been found.This is good."
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fi
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}
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status() {
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echo "Here is what we have at the moment:"
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check_pid
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}
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## Check to see if we are running as root first.
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if [ "$(id -u)" != "0" ]; then
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echo "This script must be run as root"
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exit 1
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fi
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case "$1" in
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start)
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start
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;;
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stop)
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stop
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;;
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restart)
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stop
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start
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;;
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status)
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status
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;;
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*)
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echo "Usage: sudo service gitlab_ci_runner {start|stop|restart|status}" >&2
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exit 1
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;;
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esac
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exit 0
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