How to Deploy Argo CD in Kubernetes

This guide will show you how to deploy Argo CD in Kubernetes behind Traefik (or any other ingress controller of your choice).

Prerequisites

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• Helm
• Traefik

1. Creating Helm chart values.

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Because we are deploying Argo CD behind an ingress controller, there is a helm value we need to define to disables Argo CD’s redirection from HTTP to HTTPS because our ingress controller will be handling this instead.

# values.yaml
configs:
  params:
    server.insecure: true

2. Installing Argo CD with Helm

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To install Argo CD with Helm, you can use the following commands

helm repo add argo https://argoproj.github.io/argo-helm
helm install argocd argo/argo-cd --namespace argocd --create-namespace -f values.yaml

3. Creating an ingressroute in Traefik

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Now we need to create an ingressroute so that we can access the web UI for Argo CD.

Here is the manifest I am using, you can tweak it as you like.

apiVersion: traefik.io/v1alpha1
kind: IngressRoute
metadata:
  name: argocd-server
  namespace: argocd
spec:
  entryPoints:
    - websecure
  routes:
    - kind: Rule
      match: Host(`argocd.internal.dontddos.me`)
      priority: 10
      services:
        - name: argocd-server
          port: 80
    - kind: Rule
      match: Host(`argocd.internal.dontddos.me`) && Header(`Content-Type`, `application/grpc`)
      priority: 11
      services:
        - name: argocd-server
          port: 80
          scheme: h2c

Once you apply that, you should be able to access the ArgoCD web UI.

4. Getting the default admin password

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The default admin password can be obtained by running the following command:

kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d

Ignore the % at the end, it is not part of the password.

Done

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If all went well, you should now be able to access the web UI and login.