mirror of
https://github.com/containers/youki
synced 2026-07-30 07:26:43 +02:00
Yusuke Sakurai
44 lines
1.8 KiB
Bash
44 lines
1.8 KiB
Bash
#!/usr/bin/env bash
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# Install youki onto a kind node and register it with containerd.
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# Designed to run inside a privileged DaemonSet pod that mounts the host's
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# /usr/local/bin and /etc/containerd as hostPath volumes, with hostPID enabled.
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set -euo pipefail
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HOST_BIN_DIR=${HOST_BIN_DIR:-/host/usr/local/bin}
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REAL_BIN_DIR=${REAL_BIN_DIR:-/usr/local/bin}
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HOST_CONTAINERD_CONFIG=${HOST_CONTAINERD_CONFIG:-/host/etc/containerd/config.toml}
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RUNTIME_HANDLER=${RUNTIME_HANDLER:-youki}
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NODE_READY_LABEL=${NODE_READY_LABEL:-youki.dev/runtime-ready}
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MARKER="# youki-deploy:${RUNTIME_HANDLER}"
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echo "[youki-deploy] Installing youki on $(hostname)"
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install -m 0755 -D /opt/youki/bin/youki "${HOST_BIN_DIR}/youki"
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if grep -qF "${MARKER}" "${HOST_CONTAINERD_CONFIG}"; then
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echo "[youki-deploy] containerd already configured, skipping config patch"
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else
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echo "[youki-deploy] Patching ${HOST_CONTAINERD_CONFIG}"
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cat >>"${HOST_CONTAINERD_CONFIG}" <<EOF
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${MARKER}
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[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.${RUNTIME_HANDLER}]
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runtime_type = "io.containerd.runc.v2"
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[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.${RUNTIME_HANDLER}.options]
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BinaryName = "${REAL_BIN_DIR}/youki"
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SystemdCgroup = false
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EOF
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echo "[youki-deploy] Restarting containerd via host PID 1"
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nsenter -t 1 -m -u -i -n -p -- systemctl restart containerd
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fi
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# Mark this node as ready for the youki RuntimeClass. Pods with
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# runtimeClassName: youki are only scheduled onto nodes with this label,
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# which prevents them from landing here before the installation above.
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: "${NODE_NAME:?NODE_NAME must be set (injected via the downward API)}"
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echo "[youki-deploy] Labeling node ${NODE_NAME} with ${NODE_READY_LABEL}=true"
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kubectl label node "${NODE_NAME}" "${NODE_READY_LABEL}=true" --overwrite
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echo "[youki-deploy] Done. Sleeping to keep DaemonSet pod Ready."
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exec sleep infinity
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