79 lines
3.1 KiB
Bash
79 lines
3.1 KiB
Bash
#!/usr/bin/env bash
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set -euo pipefail
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readonly expected_context="kubernetes-admin@kubernetes"
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readonly node="arschrock"
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readonly dynmap_ready_label="minecraft.brunner.ninja/dynmap-ready"
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readonly library_services=(lidarr.service readarr.service radarr.service sonarr.service bazarr.service)
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readonly whisparr_service="whisparr.service"
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current_context="$(kubectl config current-context)"
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if [[ "${current_context}" != "${expected_context}" ]]; then
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echo "Refusing to modify ${node}: context is ${current_context}, expected ${expected_context}." >&2
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exit 1
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fi
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# These host-native library managers must never inspect the empty Btrfs
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# directory underneath /komposthaufen when its Bcachefs mount is offline.
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sudo -n systemctl stop "${library_services[@]}" "${whisparr_service}"
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for service in "${library_services[@]}" "${whisparr_service}"; do
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if sudo -n systemctl is-active --quiet "${service}"; then
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echo "${service} is still active; do not unmount /komposthaufen." >&2
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exit 1
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fi
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done
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kubectl get node "${node}" >/dev/null
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if ! kubectl label node "${node}" media.brunner.ninja/multimedia-ready- 2>/dev/null; then
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labels=$(kubectl get node "${node}" --output=jsonpath='{.metadata.labels}')
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if [[ "${labels}" == *"media.brunner.ninja/multimedia-ready"* ]]; then
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echo "Could not remove the media-ready label from ${node}; do not unmount." >&2
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exit 1
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fi
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fi
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for namespace in plex jellyfin copyparty; do
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scheduled_pods=$(kubectl --namespace "${namespace}" get pods \
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--selector="app.kubernetes.io/component=server" \
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--field-selector="spec.nodeName=${node}" \
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--output=name)
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if [[ -n "${scheduled_pods}" ]]; then
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mapfile -t pod_names <<< "${scheduled_pods}"
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kubectl --namespace "${namespace}" delete "${pod_names[@]}" --wait=false
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for pod in "${pod_names[@]}"; do
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kubectl --namespace "${namespace}" wait --for=delete "${pod}" --timeout=5m
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done
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fi
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done
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if ! kubectl label node "${node}" "${dynmap_ready_label}-" 2>/dev/null; then
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labels=$(kubectl get node "${node}" --output=jsonpath='{.metadata.labels}')
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if [[ "${labels}" == *"${dynmap_ready_label}"* ]]; then
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echo "Could not remove the Dynmap-ready label from ${node}; do not unmount." >&2
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exit 1
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fi
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fi
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mapfile -t paper_pods < <(kubectl --namespace mcserver get pods \
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--selector="app.kubernetes.io/name=minecraft-paper,app.kubernetes.io/instance=paper" \
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--field-selector="spec.nodeName=${node}" --output=name)
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if ((${#paper_pods[@]})); then
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kubectl --namespace mcserver delete "${paper_pods[@]}" --wait=false
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for pod in "${paper_pods[@]}"; do
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kubectl --namespace mcserver wait --for=delete "${pod}" --timeout=15m
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done
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fi
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for namespace in plex jellyfin copyparty; do
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remaining_pods=$(kubectl --namespace "${namespace}" get pods \
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--selector="app.kubernetes.io/component=server" \
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--field-selector="spec.nodeName=${node}" \
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--output=name)
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if [[ -n "${remaining_pods}" ]]; then
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echo "A ${namespace} Pod is still assigned to ${node}; do not unmount." >&2
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exit 1
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fi
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done
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echo "Plex, Jellyfin, Copyparty and Paper are stopped on ${node}. Replacements stay Pending until their storage-ready labels return."
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