Rollback an upgrade using helm
3 min read | by Jordi Prats
When we upgrade an application using helm it can always go something wrong so instead of upgrading to another version or uninstall / install the application, we can rollback to a previous version that we know it is working
Previously we already talked about the helm history command
$ helm history pet2cattle REVISION UPDATED STATUS CHART APP VERSION DESCRIPTION 60 Wed Dec 30 16:17:58 2020 superseded pet2cattle-1.7 2.8 Upgrade complete 61 Fri Jan 1 21:45:07 2021 superseded pet2cattle-2 3 Upgrade complete 62 Sat Jan 2 11:57:26 2021 superseded pet2cattle-2 3.1 Upgrade complete 63 Sat Jan 2 22:09:24 2021 superseded pet2cattle-2 3.2 Upgrade complete 64 Mon Jan 4 09:33:53 2021 superseded pet2cattle-2 3.3 Upgrade complete 65 Tue Jan 5 07:57:53 2021 superseded pet2cattle-2 3.4 Upgrade complete 66 Wed Jan 6 15:25:30 2021 superseded pet2cattle-2 3.5 Upgrade complete 67 Thu Jan 7 09:10:07 2021 superseded pet2cattle-2 3.6 Upgrade complete 68 Fri Jan 8 08:17:56 2021 superseded pet2cattle-2 3.7 Upgrade complete 69 Sat Jan 9 19:23:25 2021 deployed pet2cattle-2 3.8 Upgrade complete Let's assume that the latest deployed versions is not working.
We can always rollback to it's previous versions by using the helm rollback command:
$ helm rollback pet2cattle Rollback was a success! Happy Helming! If we check again the helm history we will be able to see that it creates another revision with the previous app version
$ helm history pet2cattle REVISION UPDATED STATUS CHART APP VERSION DESCRIPTION 60 Wed Dec 30 16:17:58 2020 superseded pet2cattle-1.7 2.8 Upgrade complete 61 Fri Jan 1 21:45:07 2021 superseded pet2cattle-2 3 Upgrade complete 62 Sat Jan 2 11:57:26 2021 superseded pet2cattle-2 3.1 Upgrade complete 63 Sat Jan 2 22:09:24 2021 superseded pet2cattle-2 3.2 Upgrade complete 64 Mon Jan 4 09:33:53 2021 superseded pet2cattle-2 3.3 Upgrade complete 65 Tue Jan 5 07:57:53 2021 superseded pet2cattle-2 3.4 Upgrade complete 66 Wed Jan 6 15:25:30 2021 superseded pet2cattle-2 3.5 Upgrade complete 67 Thu Jan 7 09:10:07 2021 superseded pet2cattle-2 3.6 Upgrade complete 68 Fri Jan 8 08:17:56 2021 superseded pet2cattle-2 3.7 Upgrade complete 69 Sat Jan 9 19:23:25 2021 deployed pet2cattle-2 3.8 Upgrade complete 70 Sat Jan 9 19:29:23 2021 deployed pet2cattle-2 3.7 Rollback to 68 Instead of rolling back to the previous revision we can also set to which revision we want to rollback:
$ helm rollback pet2cattle 61 Rollback was a success! Happy Helming! Posted on 18/01/2021