Description of problem (please be detailed as possible and provide log
snippests):
In an OCS external mode cluster, Cluster Object Store is in unhealthy state after fresh deployment.
ocs-external-storagecluster-cephobjectstore remains in Failure phase, and rook-ceph-operator pod logs contains following error messages

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2021-10-19 18:57:41.157904 I | ceph-object-controller: reconciling external object store
2021-10-19 18:57:41.157936 I | ceph-object-controller: reconciling object store service
2021-10-19 18:57:41.157974 D | op-k8sutil: creating service rook-ceph-rgw-ocs-external-storagecluster-cephobjectstore
2021-10-19 18:57:41.192083 D | op-k8sutil: updating service rook-ceph-rgw-ocs-external-storagecluster-cephobjectstore
2021-10-19 18:57:41.204630 I | ceph-object-controller: ceph object store gateway service running at 172.30.231.51
2021-10-19 18:57:41.204657 I | ceph-object-controller: reconciling external object store endpoint
2021-10-19 18:57:41.204662 I | ceph-object-controller: reconciling external object store service
2021-10-19 18:57:41.204711 D | op-k8sutil: creating endpoint "rook-ceph-rgw-ocs-external-storagecluster-cephobjectstore". [{[{10.70.39.7  <nil> nil}] [] [{http 8080 TCP <nil>}]}]
2021-10-19 18:57:41.226858 D | ceph-object-controller: object store "openshift-storage/ocs-external-storagecluster-cephobjectstore" status updated to "Failure"
2021-10-19 18:57:41.226902 E | ceph-object-controller: failed to reconcile CephObjectStore "openshift-storage/ocs-external-storagecluster-cephobjectstore". failed to create object store deployments: failed to start rgw health checker for CephObjectStore "openshift-storage/ocs-external-storagecluster-cephobjectstore", will re-reconcile: failed to create bucket checker for CephObjectStore "openshift-storage/ocs-external-storagecluster-cephobjectstore": failed to build admin ops API connection: endpoint not set
2021-10-19 18:57:41.226912 D | op-k8sutil: Not Reporting Event because event is same as the old one:openshift-storage:ocs-external-storagecluster-cephobjectstore Warning:ReconcileFailed:failed to create object store deployments: failed to start rgw health checker for CephObjectStore "openshift-storage/ocs-external-storagecluster-cephobjectstore", will re-reconcile: failed to create bucket checker for CephObjectStore "openshift-storage/ocs-external-storagecluster-cephobjectstore": failed to build admin ops API connection: endpoint not set

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Version of all relevant components (if applicable):
OCP: 4.9.0-0.nightly-2021-10-19-063835
ODF: 4.9.0-193.ci
External RHCS: ceph version 14.2.11-147.el8cp (1f54d52f20d93c1b91f1ec6af4c67a4b81402800) nautilus (stable)

Does this issue impact your ability to continue to work with the product
(please explain in detail what is the user impact)?
"Object Service" will be reported as degraded and below alert can be seen in the dashboard
"Cluster Object Store is in unhealthy state for more than 15s. Please check Ceph cluster health or RGW connection."

Is there any workaround available to the best of your knowledge?
No

Rate from 1 - 5 the complexity of the scenario you performed that caused this
bug (1 - very simple, 5 - very complex)?
1

Can this issue reproducible?
Yes, 2/2

Can this issue reproduce from the UI?


If this is a regression, please provide more details to justify this:
Yes, this issue was not observed in 4.8

Steps to Reproduce:
1.Install ODF in external mode
2.Verify Object Service status in the dashboard

Actual results:
Object Service degraded and ocs-external-storagecluster-cephobjectstore in Failure phase

Expected results:
Object Service status and cephobjectstore should be healthy

Additional info:

$ oc -n openshift-storage get cephobjectstore -o yaml | grep phase
    phase: Failure

status of noobaa,backingstore,bucketclass:

NAME                      MGMT-ENDPOINTS                  S3-ENDPOINTS                    IMAGE                                                                                                 PHASE   AGE
noobaa.noobaa.io/noobaa   ["https://10.1.161.61:32573"]   ["https://10.1.161.63:30956"]   quay.io/rhceph-dev/mcg-core@sha256:2f641e8a0b9183e72be800920dd531466717807225b293a37dcfa14465952273   Ready   3h2m

NAME                                                  TYPE            PHASE   AGE
backingstore.noobaa.io/noobaa-default-backing-store   s3-compatible   Ready   176m

NAME                                                PLACEMENT                                                        NAMESPACEPOLICY   PHASE   AGE
bucketclass.noobaa.io/noobaa-default-bucket-class   {"tiers":[{"backingStores":["noobaa-default-backing-store"]}]}                     Ready   176m