Hostname is not a valid DNS label #192
Description
It looks like GitHub has changed the way hostnames are assigned to their GitHub Actions runners. When trying to bring Tailscale up, we’re seeing the following error:
Run if [ -z "${HOSTNAME}" ]; then
Attempt 1 to bring up Tailscale...
"github-sjc22-be107_f5f50a37-780d-4e63-a249-b785b1d3ba72-DEC74CA53709" is not a valid DNS label
Tailscale up failed. Retrying in 5 seconds...
Attempt 2 to bring up Tailscale...
"github-sjc22-be107_f5f50a37-780d-4e63-a249-b785b1d3ba72-DEC74CA53709" is not a valid DNS label
Tailscale up failed. Retrying in 10 seconds...
Attempt 3 to bring up Tailscale...
"github-sjc22-be107_f5f50a37-780d-4e63-a249-b785b1d3ba72-DEC74CA53709" is not a valid DNS label
Tailscale up failed. Retrying in 15 seconds...
Attempt 4 to bring up Tailscale...
"github-sjc22-be107_f5f50a37-780d-4e63-a249-b785b1d3ba72-DEC74CA53709" is not a valid DNS label
Tailscale up failed. Retrying in 20 seconds...
Attempt 5 to bring up Tailscale...
"github-sjc22-be107_f5f50a37-780d-4e63-a249-b785b1d3ba72-DEC74CA53709" is not a valid DNS label
Tailscale up failed. Retrying in 25 seconds...
As a workaround, we’ve had to set the hostname variable manually.