Upgrading AGIC using Helm

NOTE: Application Gateway for Containers has been released, which introduces numerous performance, resilience, and feature changes. Please consider leveraging Application Gateway for Containers for your next deployment.

The Azure Application Gateway Ingress Controller for Kubernetes (AGIC) can be upgraded using a Helm repository hosted on MCR.

Upgrade

1. View the Helm charts currently installed:

   helm list
   

   Sample response:

   NAME            REVISION        UPDATED                         STATUS  CHART                   APP VERSION     NAMESPACE
   odd-billygoat   22              Fri Nov 08 15:56:06 2019        FAILED  ingress-azure-1.0.0     1.0.0           default
   

   The Helm chart installation from the sample response above is named odd-billygoat. We will use this name for the rest of the commands. Your actual deployment name will most likely differ.

2. Upgrade the Helm deployment to a new version:

   helm upgrade \
       odd-billygoat \
       oci://mcr.microsoft.com/azure-application-gateway/charts/ingress-azure \
       --version 1.7.5
   

Rollback

Should the Helm deployment fail, you can rollback to a previous release.

1. Get the last known healthy release number:

   helm history odd-billygoat
   

   Sample output:

   REVISION        UPDATED                         STATUS          CHART                   DESCRIPTION
   1               Mon Jun 17 13:49:42 2019        DEPLOYED        ingress-azure-0.6.0     Install complete
   2               Fri Jun 21 15:56:06 2019        FAILED          ingress-azure-xx        xxxx
   

   From the sample output of the helm history command it looks like the last successful deployment of our odd-billygoat was revision 1

2. Rollback to the last successful revision:

   helm rollback odd-billygoat 1