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 in HCL Compass on SoFy.
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 compass1 with revision 1 installed compass87-0.1.0 for the HCL Compass 2.0.3.01 release and revision 2 upgraded the helm chart compass89-0.1.0 to the HCL Compass 2.1.0 release.
```
$ helm history compass1 --namespace dev
REVISION        UPDATED                         STATUS          CHART           APP VERSION     DESCRIPTION
1               Thu Jan 20 21:58:13 2022        superseded      compass87-0.1.0 1.16.0          Install complete
2               Thu Jan 20 22:13:56 2022        deployed        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 compass1 from revision 2 to revision 1.
```
$ helm rollback compass1 --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 char release compass1.

$ helm history compass1 --namespace dev
REVISION        UPDATED                         STATUS          CHART           APP VERSION     DESCRIPTION
1               Thu Jan 20 21:58:13 2022        superseded      compass87-0.1.0 1.16.0          Install complete
2               Thu Jan 20 22:13:56 2022        deployed        compass89-0.1.0 1.16.0          Upgrade complete
3               Thu Jan 20 22:30:32 2022        deployed        compass87-0.1.0 1.16.0          Rollback to 1