Install Joomla with bitnami helm chart (with flux). The setup is required to handle different clusters. Therefore, the setup is in two parts: A general part for all clusters and a second part for settings unique for each cluster. Like load balancer IP or storage class.
flux/GitHub repository. Special notice to the 'ingress' section. "ingress.class: traefik" ((1.1) values.yaml) should not be correct. For anything other than NGINX, should be using the 'spec' section. Not sure... Cluster is using taints.