Red Hat Bugzilla – Bug 1462766
[RFE] Provide automation for host OS updates
Last modified: 2018-01-25 17:03:17 EST
Description of problem:
https://docs.openshift.com/container-platform/latest/install_config/upgrading/os_upgrades.html describes how to apply OS updates on OCP nodes. Especially if the number of nodes is large, manual approach is not feasible.
This should be fully automated.
There is already a playbook doing this automatically, perhaps it could be used for inspiration here:
Since as you mention this problem is most exaggerated for large installations, we're focusing our improvements in this area on using "golden images" to allow for efficient blue/green updates whether it's for the operating system or for OpenShift. This is the direction we're going for OpenShift Online and we will encourage large OCP clusters to use them as well once they're available.
Golden images aren't a suitable solution unless OpenShift is deployed on an IaaS. For physical hosts blue/green isn't suitable.
Upstream PR here: https://github.com/openshift/openshift-ansible/pull/6558