Helm allows managing application installs that run on Kubernetes.
Helm has charts and releases. A chart is a set of instructions how to install an application on Kubernetes. A release is the installed application after the chart is ran.
You share charts through repositories. Artifact Hub lists common repositories.
The most common spell to cast is:
helm repo add --force-update some-repository https://charts.example.com
helm upgrade --install \
-n my-namespace \
-f - <<EOF
Helm stores installation details in the Kubernetes cluster secrets. You probably don't need to touch these but good to know.
kubectl -n redis \
get secret/sh.helm.release.v1.redis.v1 \
# check manifest template formatting
# compile the manifests using mock values
# compile the manifests offline without applying anything
helm install --dry-run --debug
# show already applied manifests, usually for debugging
helm get manifest
# show current values used for a previously installed release
helm get values
# upgrade or install to the latest version of the chart
helm upgrade --install ...