Jenkins Configs

_etc_default_jenkins

#Jenkins settings

# Allow graphs etc. to work even when an X server is present
JAVA_ARGS="-Djava.awt.headless=true -server -XX:+AlwaysPreTouch -Xloggc:$JENKINS_HOME/gc-%t.log -XX:NumberOfGCLogFiles=5 -XX:+UseGCLogFileRotation -XX:GCLogFileSize=20m -XX:+PrintGC -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+PrintHeapAtGC -XX:+PrintGCCause -XX:+PrintTenuringDistribution -XX:+PrintReferenceGC -XX:+PrintAdaptiveSizePolicy -XX:+UseG1GC -XX:+ExplicitGCInvokesConcurrent -XX:+ParallelRefProcEnabled -XX:+UseStringDeduplication -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=20 -XX:+UnlockDiagnosticVMOptions -XX:G1SummarizeRSetStatsPeriod=1 -Xmx768m -Xmx768m"

jenkins_watchdog.service

[Unit]
Description=Jenkins watchdog daemon, because it works so well that it needs to be restarted if it stops responding, useless jenkins service is unable to do it...
[Service]
Type=simple
Restart=always
RestartSec=60s
TimeoutStartSec=infinity
User=root
Group=sudo
RuntimeMaxSec=infinity
KillMode=control-group
ExecStart=/scripts/reboot_jenkins_if_needed.sh
#IDFile=/dendro/service_pids/dendroBuildServer
[Install]
WantedBy=multi-user.target

jenkins_watchdog.sh

#!/bin/bash
ADDRESS="127.0.0.1"
PORT=8111
COMMAND="sudo service jenkins restart"

#while true
#do
#        if [ "$PORT" != "" ];
#        then
#                ADDRESS="$ADDRESS:$PORT"
#        fi

        nc -zv "$ADDRESS" "$PORT"

        if [ "$?" != "0" ];
        then
                echo "Restarting jenkins because it is dead" && `$COMMAND`
        else
                echo "Jenkins is running, no need to restart it"
        fi

#        curl -sSf "$ADDRESS" --connect-timeout 10 --max-time 60  > /dev/null && echo "Jenkins is running, no need to restart it"&& echo "Jenkins is running, no need to restart it"  || echo "Restarting jenkins because it is dead" && `$COMMAND`
#       sleep 60
#done