Edge Node Behavior When Port 8443 is blocked

Symptoms

• Node will not connect to the portal
• Packet capture shows the following behavior:
  • DNS request and response for gatekeeper.trustgrid.io and zuul.trustgrid.io
  • TCP connection attempt to port 8443 on the returned IP address with no response
  • A 2 minute delay before the above cycle repeats

Cause

• The Trustgrid edge node cannot connect to the Trustgrid control plane over 8443

Verification

• Place a device in the same network (or assume the IP address of) the edge node. Confirm you can make a successful connection to gatekeeper.trustgrid.io:8443 using telnet, netcat or similar tool

Resolution

• Adjust firewall settings to ensure TCP traffic over port 8443 is allowed to all of the Trustgrid control plane