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98 lines
3.7 KiB
Plaintext
98 lines
3.7 KiB
Plaintext
// Module included in the following assemblies:
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//
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// * backup_and_restore/hibernating-cluster.adoc
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:_mod-docs-content-type: PROCEDURE
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[id="hibernating-cluster-hibernate_{context}"]
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= Hibernating a cluster
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You can hibernate a cluster for up to 90 days. The cluster can recover if certificates expire while the cluster was in hibernation.
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.Prerequisites
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* The cluster has been running for at least 24 hours to allow the first certificate rotation to complete.
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+
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[IMPORTANT]
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====
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If you must hibernate your cluster before the 24 hour certificate rotation, use the following procedure instead: link:https://www.redhat.com/en/blog/enabling-openshift-4-clusters-to-stop-and-resume-cluster-vms[Enabling OpenShift 4 Clusters to Stop and Resume Cluster VMs].
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====
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* You have taken an etcd backup.
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* You have access to the cluster as a user with the `cluster-admin` role.
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.Procedure
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. Confirm that your cluster has been installed for at least 24 hours.
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. Ensure that all nodes are in a good state by running the following command:
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[source,terminal]
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----
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$ oc get nodes
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----
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.Example output
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[source,terminal]
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----
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NAME STATUS ROLES AGE VERSION
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ci-ln-812tb4k-72292-8bcj7-master-0 Ready control-plane,master 32m v1.31.3
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ci-ln-812tb4k-72292-8bcj7-master-1 Ready control-plane,master 32m v1.31.3
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ci-ln-812tb4k-72292-8bcj7-master-2 Ready control-plane,master 32m v1.31.3
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Ci-ln-812tb4k-72292-8bcj7-worker-a-zhdvk Ready worker 19m v1.31.3
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ci-ln-812tb4k-72292-8bcj7-worker-b-9hrmv Ready worker 19m v1.31.3
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ci-ln-812tb4k-72292-8bcj7-worker-c-q8mw2 Ready worker 19m v1.31.3
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----
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All nodes should show `Ready` in the `STATUS` column.
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. Ensure that all cluster Operators are in a good state by running the following command:
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[source,terminal]
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----
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$ oc get clusteroperators
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----
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.Example output
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[source,terminal]
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----
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NAME VERSION AVAILABLE PROGRESSING DEGRADED SINCE MESSAGE
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authentication 4.18.0-0 True False False 51m
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baremetal 4.18.0-0 True False False 72m
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cloud-controller-manager 4.18.0-0 True False False 75m
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cloud-credential 4.18.0-0 True False False 77m
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cluster-api 4.18.0-0 True False False 42m
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cluster-autoscaler 4.18.0-0 True False False 72m
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config-operator 4.18.0-0 True False False 72m
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console 4.18.0-0 True False False 55m
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...
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----
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All cluster Operators should show `AVAILABLE`=`True`, `PROGRESSING`=`False`, and `DEGRADED`=`False`.
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. Ensure that all machine config pools are in a good state by running the following command:
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[source,terminal]
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----
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$ oc get mcp
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----
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.Example output
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[source,terminal]
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----
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NAME CONFIG UPDATED UPDATING DEGRADED MACHINECOUNT READYMACHINECOUNT UPDATEDMACHINECOUNT DEGRADEDMACHINECOUNT AGE
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master rendered-master-87871f187930e67233c837e1d07f49c7 True False False 3 3 3 0 96m
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worker rendered-worker-3c4c459dc5d90017983d7e72928b8aed True False False 3 3 3 0 96m
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----
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All machine config pools should show `UPDATING`=`False` and `DEGRADED`=`False`.
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. Stop the cluster virtual machines:
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Use the tools native to your cluster's cloud environment to shut down the cluster's virtual machines.
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[IMPORTANT]
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====
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If you use a bastion virtual machine, do not shut down this virtual machine.
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====
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