In reply to @rhouben:vac.systemec.nl
I'm trying to set up a k8s cluster behind a proxy, which means it has no external internet connectivity that doesn't go via the proxy, and therefore no default routes. How do I tell it to shut the entire fuck up about Apr 15 10:26:22 curly kubelet[14426]: E0415 10:26:22.674635 14426 kubelet_node_status.go:701] "Failed to set some node status fields" err="can't get ip address of node curly. error: no default routes found in \"/proc/net/route\" or \"/proc/net/ipv6_route\"" node="curly" and just use the actual address I specified in the config?

Is it possible to suppress extraneous message output during kubeadm init ?

I'm trying to automate the entire process in an ansible playbook, and I need some way to extract the control panel join command as well as the worker node join command from the kubeadm init output, or at least the values for --token, --discovery-token-ca-cert-hash and --certificate-key so I can form the command to be used on the various other nodes.

kubeadm init phase upload-certs --upload-certs --skip-headers
[upload-certs] Storing the certificates in Secret "kubeadm-certs" in the "kube-system" Namespace
[upload-certs] Using certificate key:
a2db3{{ omitted }}3fc58ca7b0410cc412

That's closer to what I want, but there seems to be no way to suppress those two [upload-certs] without resorting to grep, which I'd prefer not to.