`argocd login localhost:8080`	Login to server
`argocd app list`	List applications
`argocd app get myapp`	Get app details
`argocd app sync myapp`	Sync application
`argocd app diff myapp`	Show diff
`argocd app delete myapp`	Delete application
`argocd app history myapp`	Show history
`argocd app rollback myapp 1`	Rollback to version

Cluster & Repo

`argocd cluster add my-context`	Add cluster
`argocd cluster list`	List clusters
`argocd repo add https://github.com/user/repo`	Add repository
`argocd repo list`	List repositories

Application

Application Manifest

Basic application

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: myapp
  namespace: argocd
spec:
  project: default
  source:
    repoURL: https://github.com/user/repo
    targetRevision: HEAD
    path: k8s
  destination:
    server: https://kubernetes.default.svc
    namespace: default
  syncPolicy:
    automated:
      prune: true
      selfHeal: true
    syncOptions:
      - CreateNamespace=true

Helm application

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: myapp
  namespace: argocd
spec:
  project: default
  source:
    repoURL: https://charts.helm.sh/stable
    chart: nginx
    targetRevision: 1.0.0
    helm:
      values: |
        replicaCount: 2
        resources:
          limits:
            cpu: 100m
      parameters:
        - name: image.tag
          value: "latest"
  destination:
    server: https://kubernetes.default.svc
    namespace: default

ApplicationSet

List generator

apiVersion: argoproj.io/v1alpha1
kind: ApplicationSet
metadata:
  name: myapps
  namespace: argocd
spec:
  generators:
    - list:
        elements:
          - cluster: dev
            url: https://dev.example.com
          - cluster: prod
            url: https://prod.example.com
  template:
    metadata:
      name: "myapp-{{cluster}}"
    spec:
      project: default
      source:
        repoURL: https://github.com/user/repo
        targetRevision: HEAD
        path: "envs/{{cluster}}"
      destination:
        server: "{{url}}
        namespace: default

Git generator

apiVersion: argoproj.io/v1alpha1
kind: ApplicationSet
metadata:
  name: myapps
spec:
  generators:
    - git:
        repoURL: https://github.com/user/repo
        revision: HEAD
        directories:
          - path: apps/*
  template:
    metadata:
      name: "{{path.basename}}"
    spec:
      project: default
      source:
        repoURL: https://github.com/user/repo
        targetRevision: HEAD
        path: "{{path}}"
      destination:
        server: https://kubernetes.default.svc
        namespace: "{{path.basename}}"

Projects

AppProject

Project definition

apiVersion: argoproj.io/v1alpha1
kind: AppProject
metadata:
  name: myproject
  namespace: argocd
spec:
  description: My project
  
  # Source repositories
  sourceRepos:
    - https://github.com/myorg/*
  
  # Destination clusters/namespaces
  destinations:
    - namespace: "*"
      server: https://kubernetes.default.svc
  
  # Allowed resources
  clusterResourceWhitelist:
    - group: "*"
      kind: "*"
  
  # RBAC
  roles:
    - name: developer
      policies:
        - p, proj:myproject:developer, applications, get, myproject/*, allow
        - p, proj:myproject:developer, applications, sync, myproject/*, allow

Installation

Install Commands

`kubectl create namespace argocd`	Create namespace
`kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml`	Install Argo CD
`kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" \| base64 -d`	Get admin password
`kubectl port-forward svc/argocd-server -n argocd 8080:443`	Port forward