Upgrade terraform-provider-ct to v0.3.0

[nikolay]

https://github.com/coreos/terraform-provider-ct/releases/tag/v0.3.0

[dghubble]

Be warned: #275

[nikolay]

@dghubble Isn't v0.3.0 though the way to go for new clusters and infrastructure, which won't have the old schema? Anyway, it seems that my cluster gets stuck if I deploy using v0.3.0 anyway.

[elemental-lf]

@nikolay, didn't work for me either. Installations wouldn't complete successfully. Didn't really investigate at that time, so this is little more than a "me too".

[nikolay]

Honestly, I'm not sure why this is needed as Terraform has a standard ignition provider, which Tectonic Installer is using. The whole setup will be trimmed down if Typhoon switches to it. It supports 2.1.0 though, not 2.2.0, but differences are minor. I already submitted a ticket (hashicorp/terraform-provider-ignition#42), but I have the feeling that this provider is, pretty much, not maintained.

[dghubble]

The Container Linux Config YAML format was designed for human readability and committing to source control. The tools we wrote at CoreOS, ct and terraform-provider-ct transpile to Ignition JSON. I'm well aware of terraform-provider-ct and I'll not be switching to it.

Terraform should not be about reimplementing every description language in HCL. The focus here is to use it only for infrastructure resources.

Leaving this open for when I get around to v0.3.0.

[dghubble]

Once all managed clusters are on v1.12.2, you may safely update the terraform-provider-ct plugin without affecting controller nodes (I've tried it on every platform). After v1.12.2, the docs can be updated to point readers to new terraform-provider-ct versions.

[dghubble]

Migration docs for switching to the 3rd-party plugin directory https://github.com/poseidon/typhoon/pull/349/files#diff-5820b1d0cffba936ed0da1057f3a6140 Once that's complete, v1.12.2+ clusters can update to newer versions of the terraform-provider-ct plugin.

[dghubble]

Going forward, guides use terraform-provider-ct v0.3.0. There is also a migration guide to upgrade the plugin in-place for v1.12.2+ clusters. https://typhoon.psdn.io/topics/maintenance/#upgrade-terraform-provider-ct