project
Argo CD is an open-source GitOps continuous delivery tool that syncs application state in Kubernetes clusters to configuration stored in Git repositories.
No evidence-backed relationships are recorded.
ArgoCD now hands diff calculation to the API server and accepts OCI registries as first-class sources. The same write-up still calls Git the sole source of truth, so teams pulling charts from Harbor have to decide which system records intent.
Reality
An RKE2 hub-and-spoke design runs Prometheus, Harbor, Vault and ArgoCD once for four clusters and documents in-cluster failover carefully, while the hub's own sizing and outage behaviour stay unwritten.
Reality
A platform team put a dashboard, idempotent Ansible and Prometheus over 150+ Jenkins instances instead of replatforming. The bill was 20 months, and the savings are still unmeasured.
Reality
A three-node Vault Enterprise cluster crash-looped on OpenShift because restricted-v2 lacks IPC_LOCK. The fix took a custom SCC, a hand-written ClusterRole, a RoleBinding and a pod-spec hint.
Reality
One operator flipped Cilium to full kube-proxy replacement and woke at 2:47 AM to a SIEM ingesting zero events. The cluster was healthy. The evidence pipeline was not.
Reality
A nine-hour Istio Ambient debugging session ended with an agent recommending its own retirement. The edits were fine. The verification step is where the loop ran out of hypotheses it could see.
Reality
A four-core ARM box thrashed its page cache for hours while Kubernetes reported Running, ArgoCD reported Synced and Healthy, Helm exited zero and an admission policy passed.
Reality
A homelab k3s build put embedded etcd on microSD cards and USB Ethernet. The reported latency numbers point at I/O contention, not the consensus timeouts the write-up blames.
Reality