GitOps Tutorial: How Argo CD Uses Git to Automatically Manage Kubernetes Clusters

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A developer has published a hands-on guide explaining how to implement GitOps on a Kubernetes cluster using Argo CD, the open-source continuous delivery tool. The approach replaces manual kubectl commands by treating a Git repository as the single source of truth for cluster configuration. When Argo CD is configured with automated sync, self-healing, and pruning enabled, any manual change to the cluster — such as scaling a deployment or deleting a service — is automatically reversed within roughly 15 seconds to match the Git state. The setup was demonstrated on a modest 4GB Hetzner VPS already running other workloads, with Argo CD consuming around 500MB across seven pods. A key benefit highlighted is that every cluster change becomes a Git commit, effectively providing a built-in audit log, rollback mechanism, and change-review process at no extra engineering cost.

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