Akihiro Suda 6e8284e3d4 rootless: enable resource limitation (requires cgroup v2, systemd) ... Now rootless mode can be used with cgroup v2 resource limitations. A pod is executed in a cgroup like "/user.slice/user-1001.slice/user@1001.service/k3s-rootless.service/kubepods/podd0eb6921-c81a-4214-b36c-d3b9bb212fac/63b5a253a1fd4627da16bfce9bec58d72144cf30fe833e0ca9a6d60ebf837475". This is accomplished by running `kubelet` in a cgroup namespace, and enabling `cgroupfs` driver for the cgroup hierarchy delegated by systemd. To enable cgroup v2 resource limitation, `k3s server --rootless` needs to be launched as `systemctl --user` service. Please see the comment lines in `k3s-rootless.service` for the usage. Running `k3s server --rootless` via a terminal is not supported. When it really needs to be launched via a terminal, `systemd-run --user -p Delegate --tty` needs to be prepended to create a systemd scope. Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>		2021-03-24 00:37:30 -07:00
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agent.go	rootless: enable resource limitation (requires cgroup v2, systemd)	2021-03-24 00:37:30 -07:00