[FIXED] Jenkins uptime - how long since last restart

Issue

Is it possible to see how long a Jenkins instance/master has been running?

I've tried looking around in "Manage Jenkins" but can't find it there. I know I could log in and check the process on the machine, but is it possible to do it in Jenkins web UI?

This URL shows a white line when it was restarted... but it's not that intuitive.

<jenkins-url>/monitoring?part=graph&graph=usedMemory&period=mois

Solution

You can run groovy script on Jenkins web-ui from: Manage Jenkins > Script Console, and use Jenkins API. If you want to know how many days Jenkins has been running:

import java.util.concurrent.TimeUnit
long lastRestarted = Jenkins.instance.toComputer().getConnectTime()
long now =  System.currentTimeMillis()
println TimeUnit.MILLISECONDS.toDays(now - lastRestarted)

getConnectTime() of the master computer should be the time when it restarted. http://javadoc.jenkins.io/hudson/model/Computer.html#getConnectTime()

Answered By - arasio
Answer Checked By - David Marino (JavaFixing Volunteer)