Use master as worker nodes

[ronanb3]

Starting with OCP 4.5, a configuration with 3 nodes. I did an inventory keeping a worker list and removing any entry in it. It fails if I remove the worker entry.

The cluster builds well but I cannot make the console works. It seems there is an issue with the routing.

[ronanb3]

The issue comes from the haproxy configuration.

Here is the configuration working.

backend wrkhttp
    mode http
    balance roundrobin
    option forwardfor
    server master-1 10.99.92.62:80 check
    server master-2 10.99.92.63:80 check
    server master-3 10.99.92.64:80 check
backend wrkhttps
    mode tcp
    balance roundrobin
    server master-1 10.99.92.62:443 check
    server master-2 10.99.92.63:443 check
    server master-3 10.99.92.64:443 check

[ronanb3]

My inventory configuration

[all:children]
masters
workers

 ...

[masters]
192.168.1.101 host="master-1" mac="00:50:52:54:60:04"
192.168.1.102 host="master-2" mac="00:50:52:54:60:05"
192.168.1.103 host="master-3" mac="00:50:52:54:60:06"

[workers]

If I remove workers totally there is an error in one of the script.

[fketelaars]

Tested installation with just masters and this seems to work correctly. We will make the following changes:

• Add new property to the inventory file to allow scheduling on the masters (in effect skipping one of the tasks in the ocp-ignition.yaml

• If no workers have been defined, make generate the haproxy.cfg referencing the masters for ports 80 and 443