I have created 2 k2s cluster using k3d in my macos. I have deployed the ArgoCD in one and deploying applications on multiple clusters. If I use argocd add cluster <cluster-context> it throws error saying

rpc error: code = Unknown desc = Get "https://0.0.0.0:54483/version?timeout=32s": dial tcp 0.0.0.0:54483: connect: connection refused

I created both these clusters with same network using --network, though it did not work.

Also, say if I deploy Redis in one cluster and apps in another cluster how do I configure the apps to connect to this Redis?