Install ArgoCD on the Kubernetes

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This post will guide you how to install ArgoCD on the kubernetes, along with ingress access and intergrate with third parth authorization.

What is ArgoCD

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes.

Install

kubectl create namespace argocd
kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml

Configure HTTP/HTTPS ingress for UI

Replace the value of host to a new value.

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: argocd-server-http-ingress
  namespace: argocd
  annotations:
    kubernetes.io/ingress.class: "nginx"
    nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
    nginx.ingress.kubernetes.io/backend-protocol: "HTTP"
spec:
  rules:
  - http:
      paths:
      - backend:
          serviceName: argocd-server
          servicePort: http
    host: argocd.example.com
  tls:
  - hosts:
    - argocd.gosysops.com
    secretName: argocd-secret # do not change, this is provided by Argo CD

apply the HTTP yaml file

kubectl apply -f argocd-http.yaml

Configure GRPC ingress for client CLI access

same above, you need to change the value of host field. 

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: argocd-server-grpc-ingress
  namespace: argocd
  annotations:
    kubernetes.io/ingress.class: "nginx"
    nginx.ingress.kubernetes.io/backend-protocol: "GRPC"
spec:
  rules:
  - http:
      paths:
      - backend:
          serviceName: argocd-server
          servicePort: https
    host: grpc.argocd.example.com
  tls:
  - hosts:
    - grpc.argocd.gosysops.com
    secretName: argocd-secret # do not change, this is provided by Argo CD

apply grpc ingress

kubectl apply argocd-grpc.yaml

Configure argo-server to allow HTTP

edit argo-server deoployment to add parameters

Default Password

For ArgoCD 1.8, the initial password is autogenerated to be the pod name of the ArgoCD API server. This can be retrieved with the command:

kubectl get pods -n argocd -l app.kubernetes.io/name=argocd-server -o name | cut -d'/' -f 2

it won’t be work sometimes, you can re-deployment argocd-server. but the simplest way is to change password with updating config map.

go to the https://www.browserling.com/tools/bcrypt to generate a new hash password.

replace the value of admin.password field and apply it

kubectl -n argocd patch secret argocd-secret \
  -p '{"stringData": {
    "admin.password": "$2a$10$ejPpkdo5b52Ue5MDi2X4.OdcKzodli4OR15NuMWyAta6RyKjx6FvW",
    "admin.passwordMtime": "'$(date +%FT%T%Z)'"
  }}'

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Conclusion