Oversized client machine log makes machine state stuck in "deploying"

[Roy Zuo]

In /var/lib/maas/http/nginx.conf, client_max_body_size is set to 10M, which means the biggest file upload maas-http would take is 10MB.

If a post install script generates output larger than this, log uploading will fail with 413 status code after a few attempts. This would surprise maas and the machine would be stuck in "deploying" state even if post install script is successfully executed.

> sleeping 32.: HTTP Error 413: Request Entity Too Large

Personally I think 10M is a reasonable size for max upload size, but there should be same safeguarding for situations when the file size is larger than this.

[Jerzy Husakowski (jhusakowski)]

The max size was bumped to 10M due to this issue: https://bugs.launchpad.net/maas/+bug/1807058 There seems to be no reason to ever reject the client response due to the size. We will change the nginx config to lift the max size limit.