overlay cloudsigma: Set tty to RAW

[dosomder]

cloudsigma: Set TTY to RAW mode

According to cloudsigma's documentation at https://docs.cloudsigma.com/en/latest/server_context.html#setting-up-the-virtual-serial-port the TTY used to fetch the userdata / metadata should be in mode RAW.

With the flatcar beta 3732.1.0, fetching the data did not work anymore (the returned JSON was missing some bytes), without setting this mode correctly.

How to use

• Machine on cloudsigma with flatcar image
• Check output of oem-cloudinit.service if SSH keys and hostname were set -> it will fail
• Set mode to RAW
• Run service again -> it should work

Testing done

We tested it on our machines with a custom built image.

• Changelog entries added in the respective changelog/ directory (user-facing change, bug fix, security fix, update)
• Inspected CI output for image differences: /boot and /usr size, packages, list files for any missing binaries, kernel modules, config files, kernel modules, etc.

[krnowak]

Hi,

Thanks for the PR!

It looks to me more like a bug somewhere inside coreos-cloudinit. It uses github.com/cloudsigma/cepgo to fetch metadata. This in turn uses github.com/tarm/goserial, so I'd say that the issue is somewhere there. But looking at the packages, they seem to be old/unmaintained/deprecated. Meh.

I suppose we could go with this workaround. Could you then bump the revision of the oem-cloudsigma ebuild from 2 to 3, please? So it's oem-cloudsigma-0.0.3-r3.ebuild. Thanks!

[dosomder]

@krnowak To bump the revision, do I simply rename the file? And you probably mean to r4 since it is currently at r3
https://github.com/flatcar/scripts/blob/main/sdk_container/src/third_party/coreos-overlay/coreos-base/oem-cloudsigma/oem-cloudsigma-0.0.3-r3.ebuild

[krnowak]

@krnowak To bump the revision, do I simply rename the file?

Yep.

And you probably mean to r4 since it is currently at r3 https://github.com/flatcar/scripts/blob/main/sdk_container/src/third_party/coreos-overlay/coreos-base/oem-cloudsigma/oem-cloudsigma-0.0.3-r3.ebuild

Ah, right. Yeah, should be bumped to -r4. Sorry for the confusion.

[github-actions]

Build action triggered: https://github.com/flatcar/scripts/actions/runs/6561971502

[krnowak]

Thanks!

[dosomder]

Thanks for the fast review @krnowak !