Updating the guestbook Helm chart

Similar to how we searched Artifact Hub to locate a WordPress chart in Chapter 3, Installing Your First App with Helm, we need to search for a Redis chart so that it can be used as a dependency. Let’s search for a Redis chart:

1. Execute the following command to search for Redis charts from Artifact Hub:

   $ helm search hub redis

2. The first chart that’s displayed is Bitnami’s Redis chart. We’ll use this chart as our dependency. If you didn’t add the bitnami chart repository in Chapter 3, Installing Your First App with Helm, add this chart repository now by using the helm repo add command:

   $ helm repo add bitnami https://raw.githubusercontent.com/bitnami/charts/archive-full-index/bitnami

3. Next, determine the Redis chart version you would like to use. A list of version numbers can be found by running the following command:

   $ helm search repo redis --versions

You will see an output similar to the following...