Merge pull request #54786 from lahinson/etcd-quorum-guard-osdocs-5351

[OCPBUGS-5351]: adding quorum guard instructions to etcd docs

Author: skrthomas

modules/restore-replace-crashlooping-etcd-member.adoc

@@ -144,6 +144,15 @@ sh-4.2# etcdctl member list -w table
 +
 You can now exit the node shell.
 
+. Turn off the quorum guard by entering the following command:
++
+[source,terminal]
+----
+$ oc patch etcd/cluster --type=merge -p '{"spec": {"unsupportedConfigOverrides": {"useUnsupportedUnsafeNonHANonProductionUnstableEtcd": true}}}'
+----
++
+This command ensures that you can successfully re-create secrets and roll out the static pods.
+
 . Remove the old secrets for the unhealthy etcd member that was removed.
 
 .. List the secrets for the unhealthy etcd member that was removed.
@@ -199,6 +208,20 @@ $ oc patch etcd cluster -p='{"spec": {"forceRedeploymentReason": "single-master-
 +
 When the etcd cluster Operator performs a redeployment, it ensures that all control plane nodes have a functioning etcd pod.
 
+. Turn the quorum guard back on by entering the following command:
++
+[source,terminal]
+----
+$ oc patch etcd/cluster --type=merge -p '\{"spec": {"unsupportedConfigOverrides": null}}
+----
+
+. You can verify that the `unsupportedConfigOverrides` section is removed from the object by entering this command:
++
+[source,terminal]
+----
+$ oc get etcd/cluster -oyaml
+----
+
 .Verification
 
 * Verify that the new member is available and healthy.

modules/restore-replace-stopped-baremetal-etcd-member.adoc

@@ -115,6 +115,15 @@ You can now exit the node shell.
 After you remove the member, the cluster might be unreachable for a short time while the remaining etcd instances reboot.
 ====
 
+. Turn off the quorum guard by entering the following command:
++
+[source,terminal]
+----
+$ oc patch etcd/cluster --type=merge -p '{"spec": {"unsupportedConfigOverrides": {"useUnsupportedUnsafeNonHANonProductionUnstableEtcd": true}}}'
+----
++
+This command ensures that you can successfully re-create secrets and roll out the static pods.
+
 . Remove the old secrets for the unhealthy etcd member that was removed by running the following commands.
 
 .. List the secrets for the unhealthy etcd member that was removed.
@@ -531,6 +540,20 @@ openshift-compute-0       Ready worker 3h58m v1.25.0
 openshift-compute-1       Ready worker 3h58m v1.25.0
 ----
 
+. Turn the quorum guard back on by entering the following command:
++
+[source,terminal]
+----
+$ oc patch etcd/cluster --type=merge -p '\{"spec": {"unsupportedConfigOverrides": null}}
+----
+
+. You can verify that the `unsupportedConfigOverrides` section is removed from the object by entering this command:
++
+[source,terminal]
+----
+$ oc get etcd/cluster -oyaml
+----
+
 .Verification
 
 . Verify that all etcd pods are running properly.

modules/restore-replace-stopped-etcd-member.adoc

@@ -114,6 +114,15 @@ You can now exit the node shell.
 After you remove the member, the cluster might be unreachable for a short time while the remaining etcd instances reboot.
 ====
 
+. Turn off the quorum guard by entering the following command:
++
+[source,terminal]
+----
+$ oc patch etcd/cluster --type=merge -p '{"spec": {"unsupportedConfigOverrides": {"useUnsupportedUnsafeNonHANonProductionUnstableEtcd": true}}}'
+----
++
+This command ensures that you can successfully re-create secrets and roll out the static pods.
+
 . Remove the old secrets for the unhealthy etcd member that was removed.
 
 .. List the secrets for the unhealthy etcd member that was removed.
@@ -307,6 +316,20 @@ clustername-8qw5l-worker-us-east-1c-pkg26   Running        m4.large    us-east-1
 +
 It might take a few minutes for the new machine to be created. The etcd cluster Operator will automatically sync when the machine or node returns to a healthy state.
 
+. Turn the quorum guard back on by entering the following command:
++
+[source,terminal]
+----
+$ oc patch etcd/cluster --type=merge -p '\{"spec": {"unsupportedConfigOverrides": null}}
+----
+
+. You can verify that the `unsupportedConfigOverrides` section is removed from the object by entering this command:
++
+[source,terminal]
+----
+$ oc get etcd/cluster -oyaml
+----
+
 .Verification
 
 . Verify that all etcd pods are running properly.