Notes

[PedroRegisPOAR]

KVM

• KVM on GitHub Actions
• https://twitter.com/DeterminateSys/status/1729875373914247306
• https://lobste.rs/s/2bayti/unveiling_power_nixos_integration_test
• Hardware accelerated Android virtualization on Actions Linux larger hosted runners
• https://hachyderm.io/@jnsgruk/111449289662026017
• NixOS, Containers, Github Actions: A CI/CD Story - Part I
• https://www.tweag.io/blog/2019-11-21-untrusted-ci/
• https://gvolpe.com/blog/nixos-binary-cache-ci/
• https://github.com/actions/runner-images/issues/5128#issuecomment-1053108053
• KVM on GitHub Actions

Other Refs.

List:

• https://github.com/cachix/install-nix-action
• https://github.com/DeterminateSystems/flake-checker-action
• https://github.com/redhat-actions/podman-login
• https://github.com/redhat-actions/push-to-registry
• https://docs.github.com/pt/actions/guides/publishing-docker-images
• Doom on GitHub Actions #programming #software #doom #github
• TODO: https://github.com/imobanco/docker-python-image

How to enable KVM?

Once again hitting some really weird error:

sudo dmesg | tail -1

Refs.:

grep -E "(vmx|svm)" /proc/cpuinfo | wc -l 

Outputs:

[ 8819.714478] kvm_intel: VMX not enabled (by BIOS) in MSR_IA32_FEAT_CTL on CPU 1

Really interesting:

nix shell nixpkgs#libvirt --command virt-host-validate

Refs.:

• https://docs.fedoraproject.org/en-US/quick-docs/using-nested-virtualization-in-kvm/#_testing_nested_virtualization

# Yes, it calls sudo some how.
nix run nixpkgs#k3s check-config

cat /sys/module/kvm_intel/parameters/nested

References

• https://linux-kvm.org/page/Nested_Guests
• https://documentation.suse.com/pt-br/sles/15-SP2/html/SLES-all/cha-vt-installation.html#sec-vt-installation-nested-vms
• https://wiki.archlinux.org/title/KVM
• https://docs.fedoraproject.org/en-US/quick-docs/using-nested-virtualization-in-kvm/#_testing_nested_virtualization
• https://medium.com/@ajeethadithya/kvm-nested-virtualization-setup-ac6013e47689
• https://storpool.com/blog/nested-virtualization-with-kvm-and-opennebula
• https://stackoverflow.com/questions/43942033/nested-virtualization-with-kvm-enable-kvm-in-qemu-in-nested-virtualization#comment123285354_54221417 -cpu Haswell-noTSX-IBRS,vmx=on