Install OLM with Operatorhub.io support on MicroShift 4.14 and newer

install-olm-microshift.sh

#!/bin/bash

OPERATOR_SDK="v1.34.2"
OLM="0.27.0"

# Grant more permissions
oc patch scc restricted --type=merge -p '{"runAsUser": {"type": "RunAsAny"}}'
oc patch scc restricted-v2 --type=merge -p '{"runAsUser": {"type": "RunAsAny"}}'
# optional
oc adm policy add-scc-to-user privileged system:serviceaccount:olm:default

# download Operator SDK
curl -SL https://github.com/operator-framework/operator-sdk/releases/download/$OPERATOR_SDK/operator-sdk_linux_amd64
chmod +x operator-sdk_linux_amd64

# install OLM via OperatorSDK. Alternative way is to use script - https://github.com/operator-framework/operator-lifecycle-manager/releases/
operator-sdk_linux_amd64 olm install --version "$OLM"

oc apply -f - <<EOF
---
apiVersion: operators.coreos.com/v1alpha1
kind: CatalogSource
metadata:
  name: operatorhubio-catalog
  namespace: olm
spec:
  sourceType: grpc
  image: quay.io/operatorhubio/catalog:latest
  displayName: Community Operators
  publisher: OperatorHub.io
  updateStrategy:
    registryPoll:
      interval: 60m
EOF      

# Install e.g. cert manager
kubectl create -f https://operatorhub.io/install/cert-manager.yaml