mc/c/metroctl: implement simple update sequencing

Adds support for the max-unavailable flag, specifying the number of
nodes which can be concurrently in the update process.

To implement this, we now wait for the node to report as healthy again
before considering the update complete.

This allows simple gradual cluster updates.

Change-Id: If6aa44d1b8f12aadd77e35f16513a4af521fa356
Reviewed-on: https://review.monogon.dev/c/monogon/+/2770
Reviewed-by: Tim Windelschmidt <tim@monogon.tech>
Tested-by: Jenkins CI
2 files changed
tree: 49eb5319403c5b381b1c7d31cd5ba57619eafd32
  1. .github/
  2. build/
  3. cloud/
  4. go/
  5. intellij/
  6. metropolis/
  7. net/
  8. third_party/
  9. tools/
  10. version/
  11. .bazelignore
  12. .bazelproject
  13. .bazelrc
  14. .bazelrc.sandboxroot
  15. .bazelversion
  16. .git-ignore-revs
  17. .gitignore
  18. BUILD.bazel
  19. CODING_STANDARDS.md
  20. go.mod
  21. go.sum
  22. LICENSE
  23. MODULE.bazel
  24. MODULE.bazel.lock
  25. README.md
  26. SETUP.md
  27. shell.nix
  28. WORKSPACE
README.md

Monogon Monorepo

This is the main repository containing the source code for the Monogon Platform.

This is pre-release software - take a look, and check back later!

Environment

Our build environment is self-contained and requires only minimal host dependencies:

  • A Linux machine or VM.
  • Bazelisk >= v1.15.0 (or a working Nix environment).
  • A reasonably recent kernel with user namespaces enabled.
  • Working KVM with access to /dev/kvm (if you want to run tests).

Our docs assume that Bazelisk is available as bazel on your PATH.

Refer to SETUP.md for detailed instructions.

Monogon OS

Run a single node demo cluster

Build CLI and node image:

bazel build //metropolis/cli/dbg //:launch --config dbg

Launch an ephemeral test node:

bazel test //:launch --config dbg --test_output=streamed

Run a kubectl command while the test is running:

bazel-bin/metropolis/cli/dbg/dbg_/dbg kubectl describe node

Test suite

Run full test suite:

bazel test --config dbg //...