Bug 2365888

.Ceph Object Gateway services down after upgrade After upgrading, Ceph Object Gateway services may fail to start. The service fails to start as the `rgw` service now enforces the `rgw_realm` configuration but no realm exists in the Ceph Object Gateway configuration. As a result, the following outputs occur: * The Ceph Object Gateway logs show the following error: `rgw main: failed to load zone: (2) No such file or directory` * The `ceph orch ps | grep rgw` output displays Ceph Object Gateway in an error state. * Ceph Object Gateways are missing from `ceph versions`. As a workaround, removing the `rgw_realm` entry and restart all Ceph Object Gateway services. 1. Verify if the Ceph Object Gateways are configured with no realm indicated while the Ceph configuration database specifies a realm. a. Check the Ceph Object Gateway realm list. `radosgw-admin realm list` The following is an example with an empty realm list: ``` [ceph: root@host01 /]# radosgw-admin realm list { "default_info": "", "realms": [] } ``` b. Check the Ceph configuration database. `ceph config dump | egrep "^WHO|rgw_realm”` For example, ``` [ceph: root@host01 /]# `ceph config dump | egrep "^WHO|rgw_realm WHO MASK LEVEL OPTION VALUE xxxxx.yyyyy advanced rgw_realm default ``` If step 1a matches step 1b, continue to step 2 to remove the `rgw_realm` from the Ceph configuration database. If the two steps do not match, contact Support. 2. Remove the `rgw_realm` from the Ceph configuration database. `ceph config rm xxxxx.yyyyy rgw_realm` 3. Restart all Ceph Object Gateway services. `ceph orch restart rgw`.