Issue

• The Docker run command failed and the executor did not start up. Where is this info logged?

Environment

• CloudBees Jenkins Enterprise (CJE) - AWS/OpenStack/Anywhere

Resolution

This type of event is captured in the Mesos logs which are typically found in /var/log/mesos or /var/syslog. Retrieve these logs by generating a CJE support bundle. Look for Failed to execute messages.

Alternatively you can view logging directly from the Mesos instance:

From the Mesos page, select the worker you interested in (as usually named castle.jse) and view the sandbox to see related logs

Select the stderr log to see logging and any info

Pop-up with log contents

Note that Marathon logs are available in the same manner