Updating a Red Hat Satellite 6 host fails with error "Failed to create realm entry: ERF12-5287 [ProxyAPI::ProxyException] | ([RestClient::BadRequest]: 400 Bad Request) for Capsule https://satellite.example.com:9090/realm/EXAMPLE.COM"

Issue

• Updating a Red Hat Satellite 6 host fails with error Failed to create realm entry: ERF12-5287 [ProxyAPI::ProxyException] | ([RestClient::BadRequest]: 400 Bad Request) for Capsule https://satellite.example.com:9090/realm/EXAMPLE.COM

• Host specific task i.e. creating a new Host or updating an existing one (by adding to HostGroup) fails with error

# cat /var/log/foreman/production.log

E, [2017-03-21T10:44:33.432271 #10928] ERROR -- : Failed to initailize credentials cache from keytab: krb5_get_init_creds_keytab: Password has expired

2017-03-21 10:44:33 [app] [W] Failed to create client.example.com realm entry: ERF12-5287 [ProxyAPI::ProxyException]: Unable to create realm 
entry ([RestClient::BadRequest]: 400 Bad Request) for Capsule https://satellite.example.com:9090/realm/EXAMPLE.COM  | ProxyAPI::ProxyException: ERF12-5287 [ProxyAPI::ProxyException]: Unable to create realm entry ([RestClient::BadRequest]: 400 Bad Request) for Capsule https://satellite.example.com:9090/realm/EXAMPLE.COM