Tool cheatsheet

Argo CD 3 Cheatsheet

Install Argo CD, define Applications declaratively, and manage sync, diffs, history and rollbacks with the argocd CLI.

Install and log in

Install Argo CD — Create a namespace and apply the official manifests. Pin to a release tag for production instead of stable.
Reach the UI — Forward the API server to your machine, then open https://localhost:8080.
Get the initial admin password — Print the generated password for the admin account, then change it and delete the initial secret.
Log in with the CLI — Log in to the API server. Add --grpc-web if the server sits behind a proxy that doesn't pass gRPC.
Change the admin password — Set a new password for the signed-in account.

Create an application — Deploy a path of a Git repository into a namespace. Argo CD tracks the repository and compares it to the cluster.
List applications — Show applications with their sync and health status.
Inspect an application — Show an application's resources, sync status and health.
See what would change — Compare the Git state with the live cluster before syncing.
Sync an application — Apply the Git state to the cluster.
Turn on automated sync — Sync automatically when Git changes. prune deletes resources removed from Git, and selfHeal reverts manual changes.
See deployment history — List the revisions that were synced.
Roll back — Return to an earlier deployed revision by its history ID. Disable auto-sync first or it will sync forward again.
Delete an application — Delete the application, and with --cascade its resources, from the cluster.
Read pod logs — Show logs from the application's pods.

Define an Application in YAML — Keep applications in Git too. This one deploys a Helm chart folder with automated sync.
Generate applications from a list — An ApplicationSet creates one Application per element, for example per environment.
Create it from the file — Apply the Application manifest to the argocd namespace.
Create a project — Projects limit which repositories, clusters and namespaces applications may use.

Add a private repository — Register credentials for a private Git repository. Use a token, not your password.
List repositories — Show configured repositories and their connection status.
Register another cluster — Add a cluster from your kubeconfig context so Argo CD can deploy to it.
List clusters — Show clusters Argo CD can deploy to.
Refresh from Git — Make Argo CD re-read the repository without waiting for the polling interval.
Useful sync options — Create the namespace, replace resources that can't be patched, or sync in a prune-last order.

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