I believe I have followed the airgap install instructions correctly, but when I try to join agents to the controller I have the error “Failed to validate connection to cluster at https://1.2.3.4:6443: CA cert validation failed” Both nodes are on the same local network with nothing inbetween. I am connecting directly to the IP and the IP is in the SANs.

airgap would not have any impact on the error you’re getting

Yeah I think this is a timing issue

Are you sure you’re using the token from the correct server?

Yeah. One the agents are 24 hours in the past. I need to get NTP working and I will try again/

that could do it

Yeah that was it