CoreOS image

[xla]

We need a shared image for all our nodes with the following binaries present

• gaiad
• node-exporter
• oklog

[liamsi]

"On May 26, the final updates to CoreOS Container Linux will begin rolling out. Any bugs or security vulnerabilities discovered after that date will not be fixed."

Related:

• https://coreos.com/os/eol/
• releases: https://coreos.com/releases/ (current supported version at upcloud: CoreOS Stable 1068.8.0 , Release Date: July 18, 2016 🤔)
• https://coreos.com/os/docs/latest/ is replaced by https://docs.fedoraproject.org/en-US/fedora-coreos/

[liamsi]

We can still go with the latest coreos versions (that are developed and will be maintained by fedora) via:

• https://upcloud.com/community/tutorials/using-own-install-media/
• https://getfedora.org/coreos/download?tab=metal_virtualized&stream=stable (or this concrete iso)

We need a shared image for all our nodes with the following binaries present

My current understanding is that the complete configuration including installing (downloading really) those binaries can be setup via ignition files: https://github.com/coreos/ignition/blob/master/doc/examples.md#create-files-on-the-root-filesystem

On one hand this is nice as we can have different versions of images tracked on github on the other it adds additional (mostly onetime) overhead. On the other hand coreos is meant to be used as a container host (instead of deploying and running binaries in the host directly, it's in the name really). Do we really need that?