Performing rolling roll back to HCL Compass Helm chart

You can roll back HCL Compass to the previous release using the helm rollback command.

Before you begin

Before you perform the upgrade, you must first do the following:

Use Helm to install the HCL Compass solution chart as described in Step 3 of Getting started with HCL Compass Helm chart.
Use Helm to upgrade the HCL Compass solution chart to the new HCL Compass release as described in Performing rolling upgrades to HCL Compass Helm chart.

About this task

Rolling back utilizes the helm rollback command. For more information, see Helm Rollback in the Helm documentation.

Procedure

Run the helm history command to see revision numbers of your HCL Compass helm chart release.
You should have a minimum of two revision numbers: revision 1 for installation and revision 2 that you used to upgrade to. The following example illustrates a helm chart release named hcl-compass1 with revision 1 installed hcl-compass87-0.1.0 for the HCL Compass 2.0.3.01 release and revision 2 upgraded the helm chart hcl-compass89-0.1.0 to the HCL Compass 2.2 release.
```
$ helm history hcl-compass --namespace dev
REVISION        UPDATED                         STATUS          CHART             APP VERSION              DESCRIPTION
1               Thu Jan 20 21:58:13 2022        superseded      hcl-compass87-0.1.0 1.16.0          Install complete
2               Thu Jan 20 22:13:56 2022        deployed        hcl-compass89-0.1.0 1.16.0          Upgrade complete
```
Roll back the HCL Compass helm chart using the helm rollback command.
The following example will roll back the HCL Compass helm chart release hcl-compass from revision 2 to revision 1.
```
$ helm rollback hcl-compass --namespace dev
Rollback was a success! Happy Helming!
```

Run the helm history RELEASE command to see that the new revision 3 has been created after roll back, and that it rolled back to revision 1 in the HCL Compass helm chart release hcl-compass.

$ helm history hcl-compass --namespace dev
REVISION        UPDATED                         STATUS          CHART             APP VERSION              DESCRIPTION
1               Thu Jan 20 21:58:13 2022        superseded      hcl-compass87-0.1.0 1.16.0          Install complete
2               Thu Jan 20 22:13:56 2022        deployed        hcl-compass89-0.1.0 1.16.0          Upgrade complete
3               Thu Jan 20 22:30:32 2022        deployed        hcl-compass87-0.1.0 1.16.0          Rollback to 1