1.4. Restoring MicroShift data backups manually


You can restore MicroShift data from a backup manually. Backups can be restored after updates, or after other system events that remove or damage required data. When you restore a backup, you must use the entire file path.

注意

On an rpm-ostree system, MicroShift backs up and restores data automatically. Automated backups are in the /var/lib/microshift-backups directory by default.

Prerequisites

  • Root access to the host.
  • You have the full path of the data backup file.
  • The MicroShift service is stopped.

Procedure

  1. Manually restore MicroShift data by using the full file path of the backup you want to restore by running the following command:

    $ sudo microshift restore /var/lib/microshift-backups/<manual_backup> 
    1
    1
    Replace <manual_backup> with the backup name that you used. Optional: You can also restore automatic ostree backups using the full file path.

    Example output

    ??? I1017 07:39:52.055165    6007 data_manager.go:131] "Copying backup to data directory" storage="/var/lib/microshift-backups" name="test" data="/var/lib/microshift"
    ??? I1017 07:39:52.055243    6007 data_manager.go:154] "Renaming existing data dir" data="/var/lib/microshift" renamedTo="/var/lib/microshift.saved"
    ??? I1017 07:39:52.055326    6007 data_manager.go:227] "Starting copy" cmd="/bin/cp --verbose --recursive --preserve --reflink=auto /var/lib/microshift-backups/test /var/lib/microshift"
    ??? I1017 07:39:52.061363    6007 data_manager.go:241] "Finished copy" cmd="/bin/cp --verbose --recursive --preserve --reflink=auto /var/lib/microshift-backups/test /var/lib/microshift"
    ??? I1017 07:39:52.061404    6007 data_manager.go:175] "Removing temporary data directory" path="/var/lib/microshift.saved"
    ??? I1017 07:39:52.063745    6007 data_manager.go:180] "Copied backup to data directory" name="test" data="/var/lib/microshift"

  2. Optional. Manually restore data from a customized directory by using the full file path of the backup. Run the following command:

    $ sudo microshift restore /mnt/<other_backups_location>/<another_manual_backup> 
    1
    1
    Replace <other_backups_location> with the directory you used and <my_manual_backup> with the backup name you used when creating the backup you are restoring.
  3. Restart the host. Restarting the host enables all workloads and pods to restart.

Verification

  • Use the oc get pods -A command to verify that the node is running, then check the restored data.

    $ oc get pods -A

    Example output

    NAMESPACE                   NAME                                                     READY   STATUS   RESTARTS  AGE
    default                     i-06166fbb376f14a8bus-west-2computeinternal-debug-qtwcr  1/1     Running  0		    46m
    kube-system                 csi-snapshot-controller-5c6586d546-lprv4                 1/1     Running  0		    51m
    openshift-dns               dns-default-45jl7                                        2/2     Running  0		    50m
    openshift-dns               node-resolver-7wmzf                                      1/1     Running  0		    51m
    openshift-ingress           router-default-78b86fbf9d-qvj9s                          1/1     Running  0		    51m
    openshift-ovn-kubernetes    ovnkube-master-5rfhh                                     4/4     Running  0		    51m
    openshift-ovn-kubernetes    ovnkube-node-gcnt6                                       1/1     Running  0		    51m
    openshift-service-ca        service-ca-bf5b7c9f8-pn6rk                               1/1     Running  0		    51m
    openshift-storage           topolvm-controller-549f7fbdd5-7vrmv                      5/5     Running  0		    51m
    openshift-storage           topolvm-node-rht2m                                       3/3     Running  0		    50m

    注意

    This example output shows a basic MicroShift installation. If you installed optional RPMs, the status of pods running those services is also expected in your output.

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