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# systemd unit file for k3s (rootless)
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#
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# Usage:
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# - [Optional] Enable cgroup v2 delegation, see https://rootlesscontaine.rs/getting-started/common/cgroup2/ .
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# This step is optional, but highly recommended for enabling CPU and memory resource limtitation.
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#
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# - Copy this file as `~/.config/systemd/user/k3s-rootless.service`.
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# Installing this file as a system-wide service (`/etc/systemd/...`) is not supported.
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# Depending on the path of `k3s` binary, you might need to modify the `ExecStart=/usr/local/bin/k3s ...` line of this file.
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#
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# - Run `systemctl --user daemon-reload`
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#
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# - Run `systemctl --user enable --now k3s-rootless`
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#
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# - Run `KUBECONFIG=~/.kube/k3s.yaml kubectl get pods -A`, and make sure the pods are running.
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#
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# Troubleshooting:
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# - See `systemctl --user status k3s-rootless` to check the daemon status
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# - See `journalctl --user -f -u k3s-rootless` to see the daemon log
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# - See also https://rootlesscontaine.rs/
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[Unit]
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Description=k3s (Rootless)
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[Service]
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Environment=PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
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# NOTE: Don't try to run `k3s server --rootless` on a terminal, as it doesn't enable cgroup v2 delegation.
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# If you really need to try it on a terminal, prepend `systemd-run --user -p Delegate=yes --tty` to create a systemd scope.
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ExecStart=/usr/local/bin/k3s server --rootless --snapshotter=fuse-overlayfs
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ExecReload=/bin/kill -s HUP $MAINPID
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TimeoutSec=0
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RestartSec=2
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Restart=always
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StartLimitBurst=3
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StartLimitInterval=60s
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LimitNOFILE=infinity
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LimitNPROC=infinity
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LimitCORE=infinity
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TasksMax=infinity
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Delegate=yes
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Type=simple
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KillMode=mixed
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[Install]
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WantedBy=default.target
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