Issue

• I see the following error when using the CJE CLI to perform operations such as worker-restart / upgrade:

[worker-1] Initializing Docker cleanup job
[worker-1] "-":1: bad minute
[worker-1] errors in crontab file, can't install.

Environment

• CloudBees Jenkins Enterprise (CJE) > 1.11.11 AWS/Anywhere

Related Issue

• CPLT2-5322: Docker GC init script failing on CLI operations

Explanation

This is caused by a bug introduced in version 1.11.11. The version provides the ability to set the docker cleanup frequency on cluster-init / worker-add operations by introducing a new attribute docker_image_clean_frequency. However this attribute is not properly initialized for existing workers - workers that were added prior to version 1.11.11.

Resolution

Solution

The solution is to upgrade to CloudBees Jenkins Enterprise 1.11.13.

Workaround

The workaround is to add the docker_image_clean_frequency = 60 attribute to the project configuration - 60 being the default value of 60 minutes.

1) In .dna/project.config, add the attribute under the [worker] section, like for example:

[worker]
...
docker_image_clean_frequency = 60
...

2) Run cje upgrade --config-only --force to apply that configuration to the project.