I tried the demo version of ManageIQ with the Docker image and everything was ok.
I deployed the VMware appliance and perform same operations. Adding a git repo and credentials for Ansible was ok. But adding OCP provider return Credential validation was not successful: 503 “Service Unavailable”.
In the logs
[root@localhost ~]# grep -e "ocp" /var/www/miq/vmdb/log/evm.log [----] I, [2020-11-13T03:21:02.448713 #2502:2abf98e192f4] INFO -- : MIQ(ManageIQ::Providers::Openshift::ContainerManager#with_provider_connection) Connecting through ManageIQ::Providers::Openshift::ContainerManager: [ocp4exp.testing.local] [----] W, [2020-11-13T03:21:02.777157 #2502:2abf98e192f4] WARN -- : MIQ(ManageIQ::Providers::Openshift::ContainerManager#authentication_check_no_validation) type: [:bearer] for  [ocp4exp.testing.local] Validation failed: error, 503 "Service Unavailable"
No more info about what could be the error.
Please help me Obi Wan, you’re my only hope.