I noticed my Unix slaves on EC2 do not have a ~/.hudson-run-init file, despite running the init script (and following setup steps) successfully. As a result, when they're brought back up from a stopped state, they run the init script again, wasting ~20 minutes.

Some relevant AMI configuration:

• Remote FS root: /home/ubuntu
• Remote user: ubuntu
• AMI Type: unix
• Root command prefix: sudo
• Init script is essentially: sudo $HOME/init_script.sh

On a successfully connected slave, I expect to see /home/ubuntu/.hudson-run-init, but there's no such file. I took a quick look at EC2UnixLauncher.java, and everything looks reasonable. My only question is why touch ~/.hudson-run-init would need to be run as root. But both touch ~/.hudson-run-init and sudo touch ~/.hudson-run-init produce the expected file when run manually as the ubuntu user. So I'm a bit stumped.

I'm testing out touching the file myself in the init script as a workaround.