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In a multi-cluster GitOps architecture using Argo CD, how do you manage credentials for a remote cluster that is not the cluster where Argo CD resides?
The 'argocd cluster add' command is the standard way to register an external cluster with Argo CD. It creates a ServiceAccount in the target cluster, generates a kubeconfig, and stores the credentials as a Secret in the Argo CD namespace, allowing Argo CD to manage the remote clu…Read full explanation
In a blue-green progressive delivery deployment using Flagger, you notice that the 'primary' service is not receiving traffic even after the analysis successfully completes. What is the most likely cause?
In Flagger blue-green deployments, the primary service receives production traffic only when the VirtualService or HTTPRoute routes to it, and Flagger manages this routing during promotion. If analysis succeeds but the primary still gets no traffic, the most likely cause is that …Read full explanation
You are deploying applications across multiple clusters using Argo CD. You want to implement a hub-and-spoke model where the central management cluster controls all edge clusters. Which THREE of the following are necessary to correctly configure this pattern?
In a hub-and-spoke Argo CD topology, the hub cluster runs the Argo CD control plane and manages remote edge clusters as external targets, so option C is correct because the Argo CD application-controller's service account (or the credential stored in the cluster secret) must have…Read full explanation
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