Still unable to connect worker node to cp node

tstaffordsmith

When I execute the "sudo kubeadm join" command on the worker node, I get the following:

[preflight] Running pre-flight checks
error execution phase preflight: couldn't validate the identity of the API Server: Get "https:///api/v1/namespaces/kube-public/configmaps/cluster-info?timeout=10s": net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
To see the stack trace of this error execute with --v=5 or higher

taepyongyang

I've performed over a dozen times (with 11.08/11.23) as I'm using a temporary Cloud (GCP) lab on Ubuntu 20.04 LTS.

Did this occur while using the kubeadm join verbatim?

From:
grep -A2 join cp.out

sudo kubeadm join <VPC ASSIGNED_IP_OF_CP>:6443 --token <PRINTED_TOKEN> \
    --discovery-token-ca-cert-hash sha256:<MORE_PRINTED_TOKEN>

chrispokorni

Hi @tstaffordsmith,

What type of infrastructure are you on? It seems there is a timeout, that could be caused by a misconfigured firewall. Are you on cloud or local VMs? What OS version, CPU, RAM?

Regards,
-Chris

tstaffordsmith

Already figured this out but thank you