Install the popular Kubernetes package manager and enable cluster-wide install ability.
Helm 3? No Way!
OpenShift 4 has built-in integration with Helm 3. Yet OpenShift 3 does not feature any integration. It is either not possible to install Helm 3 on OpenShift 3.[1] Luckily we still have Helm 2.[2]
Installing Helm Server Portion
First of all we need to prepare some variables:
TILLER_NAMESPACE=tiller
HELM_VERSION=v2.17.0
Then we use the example template in OpenShift source[3]:
$ oc login
$ oc process -f https://github.com/openshift/origin/raw/release-3.11/examples/helm/tiller-template.yaml -p TILLER_NAMESPACE="${TILLER_NAMESPACE}" -p HELM_VERSION=v2.17.0 | oc create -f -
Then install the client and initialize locally:
$ curl -L https://git.io/get_helm.sh | bash
$ helm init --client-only
If you experience RBAC problem:
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User "system:serviceaccount:tiller:tiller" cannot create namespaces at the cluster scope: no RBAC policy matched"
You need to grant tiller as cluster admin:
$ oc create clusterrolebinding helm-tiller --clusterrole=cluster-admin --serviceaccount=${TILLER_NAMESPACE}:tiller