Red Hat Bugzilla – Bug 1292311
[DOCS] Install guide notes that master and etcd cannot be together in HA config
Last modified: 2018-01-25 16:41:11 EST
Section Number and Name:
Describe the issue:
Here is what the note says
When specifying multiple etcd hosts, external etcd is installed and configured. Clustering of OpenShift’s embedded etcd is not supported.
Here is what Mike said
Suggestions for improvement:
Fix the defect
This was not meant to suggest that they could not be collocated, just that if you specify multiple etcd hosts, the standalone version of etcd is installed, instead of the etcd that is embedded in OpenShift itself. Calling it "external etcd" is probably the confusion here, but also we can add some language specifically about collocation to clear things up.
Yes clarifying on colocation will help.
During my interaction with the customer, I said that colocation is possible and customer pointed this out and I got confused. Based on your answer I understand that colocation is actually possible.
It also helps if we clarify whether the 3 masters (or odd number of masters) are required for the purpose of colocation with etcd. Can we manage with 2 masters for HA if etcd is not collocated? Or are there any other implications?