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raw_exec: make raw exec driver work with cgroups v2

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This PR adds support for the raw_exec driver on systems with only cgroups v2.

The raw exec driver is able to use cgroups to manage processes. This happens
only on Linux, when exec_driver is enabled, and the no_cgroups option is not
set. The driver uses the freezer controller to freeze processes of a task,
issue a sigkill, then unfreeze. Previously the implementation assumed cgroups
v1, and now it also supports cgroups v2.

There is a bit of refactoring in this PR, but the fundamental design remains
the same.

Closes #12351 #12348
This commit is contained in:
Seth Hoenig
2022-03-28 19:33:01 -05:00
parent ff6ae5fad2
commit be7ec8de3e
35 changed files with 698 additions and 308 deletions
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3
.github/workflows/test-core.yaml vendored
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@@ -78,7 +78,8 @@ jobs:
run: |
make bootstrap
make generate-all
make test-nomad-module
sudo sed -i 's!Defaults!#Defaults!g' /etc/sudoers
sudo -E env "PATH=$PATH" make test-nomad-module
tests-pkgs:
runs-on: ubuntu-20.04
timeout-minutes: 30