Make ignition remote file retrieval retry on intermediate errors

[discordianfish]

ignition supports downloading files from s3. Unfortunately s3 isn't always very reliable and every ~10 boot ignition fails because s3 returns a 5xx error. It would be great if ignition could retry in this case.

[crawford]

Ignition already retries S3 fetches (it uses the default from the S3 golang library). In the event that the S3 fetch fails, Container Linux will reboot after five minutes and try to provision itself again.

Are you seeing different behavior?

[discordianfish]

It looked like it tried once and rebooted after that. Hrm.. I can look into this closer when it happens again. It happened quite frequently (maybe every ~10th boot) in us-east-1.

[bgilbert]

Closing due to inactivity.