workflow-controller-configmap.yaml

# This file describes the config settings available in the workflow controller configmap
apiVersion: v1
kind: ConfigMap
metadata:
  name: workflow-controller-configmap
data:
  config: |  
    persistence:
      connectionPool:
        maxIdleConns: 100
        maxOpenConns: 0
      nodeStatusOffLoad: true
      postgresql:
        host: (mydbhost)
        port: 5432
        database: argo_plans
        tableName: argo_workflows
        userNameSecret:
          name: argo-postgres-credentials
          key: username
        passwordSecret:
          name: argo-postgres-credentials
          key: password
        ssl: true
        sslmode: "require"

workflow-controller.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: workflow-controller
spec:
  selector:
    matchLabels:
      app: workflow-controller
  template:
    metadata:
      labels:
        app: workflow-controller
    spec:
      containers:
      - args:
        - --configmap
        - workflow-controller-configmap   # Set configmap name here
        - --executor-image
        - argoproj/argoexec:latest
        - --namespaced
        command:
        - workflow-controller
        image: argoproj/workflow-controller:v2.7.5
        name: workflow-controller
      serviceAccountName: argo