m/n/c/network/hostsfile: implement

This implementes a dedicated runnable for maintaining hostsfile-like
local state based on the node's local state and any possible cluster
data.

This needs to be able to be maintained by a single runnable regardless
of the cluster enrolment process (bootstrap, register or join), and
regardless of the state of enrolment (don't have networking data, only
have local networking data, have cluster state from any kind of
available cluster dialer).

For now this is just piped into the bootstrap logic and has no access to
cluster data, but a planned revamp of the enrolment logic into the
roleserver will fully integrate this with cluster information.

Change-Id: Icc472a0da302109882c5a6d8b4e124a7b9af4813
Reviewed-on: https://review.monogon.dev/c/monogon/+/422
Reviewed-by: Lorenz Brun <lorenz@monogon.tech>
6 files changed
tree: 80d1f94ce1be04bef15b4632083ad7e2745bbcb3
  1. build/
  2. intellij/
  3. metropolis/
  4. scripts/
  5. third_party/
  6. .bazelignore
  7. .bazelproject
  8. .bazelrc
  9. .git-ignore-revs
  10. .gitignore
  11. BUILD
  12. LICENSE
  13. README.md
  14. WORKSPACE
README.md

Monogon Monorepo

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

This is pre-release software - feel free to look around, and check back later for our first release!

Environment

Our build environment requires a working Podman binary (your distribution should have one).

Usage

Spinning up: scripts/create_container.sh

Spinning down: scripts/destroy_container.sh

Running commands: scripts/run_in_container.sh <...>

Using bazel using a wrapper script: scripts/bin/bazel <...> (add to your local $PATH for convenience)

IntelliJ

This repository is compatible with the IntelliJ Bazel plugin, which enables full autocompletion for external dependencies and generated code. All commands run inside the container, and necessary paths are mapped into the container.

The following steps are necessary:

  • Install Google's Bazel plugin in IntelliJ. On IntelliJ 2020.3 or later, you need to install a beta release of the plugin.

  • Add the absolute path to your ~/.cache/bazel-monogon folder to your idea64.vmoptions (Help → Edit Custom VM Options) and restart IntelliJ:

    -Dbazel.bep.path=/home/leopold/.cache/bazel-monogon

  • Set "Bazel Binary Location" in Other Settings → Bazel Settings to the absolute path of scripts/bin/bazel. This is a wrapper that will execute Bazel inside the container.

  • Use File → Import Bazel project... to create a new project from .bazelproject.

After running the first sync, everything should now resolve in the IDE, including generated code.

Metropolis

Run a single node cluster

Launch the node:

scripts/bin/bazel run //:launch

Run a kubectl command:

scripts/bin/bazel run //metropolis/cli/dbg -- kubectl describe

Run tests:

scripts/bin/bazel test //...