Jenkins uptime - how long since last restart

Question

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

Answer 1

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()