Declarative cluster and repository secrets in Argo CD

The effort scales with how many clusters, repositories and credential types you have, and with how many places those credentials are referenced today. Each cluster registration and repository needs a labeled Kubernetes Secret written, reviewed and applied, and any existing entries created by the CLI need to be mapped to those Secrets without breaking current applications. Teams with a handful of clusters and one or two repositories usually have a small, contained change. Estimates grow when credentials are shared across projects, when they come from several Git hosts, or when the team has not yet chosen how the Secret values themselves will be stored. Ask any partner to break the quote down by cluster count, repository count and secret tooling decision before you agree on scope.

You need read and write access to the Git repository that will hold the cluster and repository definitions, cluster-admin or equivalent rights on the Argo CD management cluster for applying Secrets, and a named owner for each credential who can approve scope and rotation. For each managed cluster, someone with access must confirm the identity Argo CD uses, the namespaces it may deploy into and the Git repositories each team is allowed to use. Access to the registries and Git hosts is needed to confirm which credentials are read-only, which can write, and which are deploy keys or tokens. Agree on where secret values will live before the first Secret is written, because that decision affects the Git layout.

Yes, a team that already runs Argo CD and Kubernetes can make this change internally, provided it has someone who understands Argo CD's Secret types and project scoping. The work is mostly careful authoring of Secrets, a staged rollout that keeps existing applications syncing, and verification that each project can reach only its intended repositories and clusters. Teams often choose a partner when the change touches many clusters at once, when credentials span several identity systems, or when the internal team has no time to review the result. A partner's written scope should state which parts are advisory, which are hands-on and what the client team must still do after handover.

Once credentials are declared in Git, recurring work includes rotating credentials on a schedule your security policy sets, reviewing changes to Secret definitions through the same pull request process as application code, and checking that what is in the cluster still matches what Git describes. Drift checks matter because someone can still run a CLI command or edit a Secret by hand. Access reviews for who can change registration Secrets, and periodic confirmation that repository credential templates still cover the right URLs, are also ongoing tasks. Ask any provider which of these they will run, which your team will own, and how often each review is expected to happen.

Rotate by adding the new credential alongside the old one, confirming that a test application syncs with it, and only then removing the old value. For repository credentials, a credential template matching the repository URL can be updated in place while the new value is verified, so existing applications keep syncing. For cluster registrations, create the new identity on the target cluster first, update the labeled Secret, then confirm sync status on a non-critical application before revoking the old identity. Keep the change in Git so the rotation is reviewable and reversible. Plan a window for the rollback path and make sure the owner of each credential is available during the change.

DeployOpen scopes fixed work in writing before it starts. The written scope lists the clusters, repositories and credential types covered, the deliverables, the client responsibilities and the timeline agreed for each. DeployOpen does not publish a price list, so a quote follows from that scope. When you request one, ask for the scope to name the clusters and repositories in each phase, the secret tooling decision, the verification steps, the handover of documentation and any retainer for later rotation or drift checks. Quotes that cannot name what is included are a signal to ask for a clearer scope before comparing numbers.

It can, if the Secret values themselves are committed in plain text. Labeled Secrets describe where Argo CD should connect and which credential it should use, but the sensitive values should be stored encrypted or referenced from a secrets store, not written into a Git repository readable by many people. Argo CD's security documentation notes that it redacts cluster, Git and OAuth2 credentials from API responses and logs, which helps, but it does not replace a secrets management decision. Confirm your approach with your security team before the first commit, and check repository access controls as part of the design.