Using Kubernetes API Gateway with Argo Rollouts

Context

Step	Name	Namespace	Once Per	Kind	Purpose
2	`eg`	`default`	Cluster	`GatewayClass`	Create a gateway
2	`eg`	`default`	Cluster	`Gateway`
3	`gateway-controller-role`	`argo-rollouts`	Cluster	`ClusterRole`	Allow Argo Rollouts to edit Http Routes
3	`gateway-admin`	?	Cluster	`ClusterRoleBinding`
4	`argo-rollouts-http-route`	`default`	Application	`HTTPRoute`	Create an HTTP route
5	`argo-rollouts-stable-service`	`default`	Application	`Service`	Create a Rollout
5	`argo-rollouts-canary-service`	`default`	Application	`Service`
5	`rollouts-demo`	`default`	Application	`Rollout`

Review

export POD_ID="$(k get pod -n argo-rollouts | grep argo-rollouts | awk '{ print $1}')"
k logs -f -n argo-rollouts $POD_ID

Show me

time="2025-01-30T06:16:01Z" level=info msg="Downloading plugin argoproj-labs/gatewayAPI from: https://github.com/argoproj-labs/rollouts-plugin-trafficrouter-gatewayapi/releases/download/v0.4.0/gatewayapi-plugin-linux-amd64"
time="2025-01-30T06:16:07Z" level=info msg="Download complete, it took 6.021917129s"

The logs should of the Argo Rollouts Controller pod should show the downloading of the plugin. Note that Argo Rollouts is configured to download, install and use this plugin using a ConfigMap with the name argo-rollouts-config. Note that you have to restart the Argo Rollouts deployment for this ConfigMap to be used, this restart is performed by Ansible as part of the first part of this tutorial¹.

Install and Manage Argo CD with Ansible: Set up a Kubernetes Cluster, install Argo CD, and manage both using C2 Platform’s Ansible roles for Linux and Kubernetes.

Additional Information

You can perform this restart manuallyyourself by using the following command:

kubectl rollout restart deployment -n argo-rollouts argo-rollouts

We van have Ansible perform the restart for us using the kubernetes_resources variable, which is configured in the file group_vars/argocd/argo_rollouts_gateway_api.yml :

- name: Restart Argo Rollouts
  type: shell
  cmd: |
    kubectl rollout restart deployment -n {{ c2_argocd_rollouts_namespace }} argo-rollouts
    touch /etc/argo-rollouts-restart    
  creates: /etc/argo-rollouts-restart