Gandalf the Greybeard
a383d32176
The init container extracted the tarball preserving the dist/ subdirectory, placing main.js at /plugins/polaris/dist/main.js instead of /plugins/polaris/main.js where Headlamp expects it. Add cp -a dist/* . && rm -rf dist after extraction to flatten the build output into the plugin root directory. Fixes 6/16 E2E test failures (settings + badge navigation timeouts). Co-Authored-By: Paperclip <noreply@paperclip.ing>
135 lines
4.6 KiB
Bash
Executable File
135 lines
4.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Deploy the built plugin to a live Headlamp instance via ConfigMap + init container.
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#
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# This script packages the built plugin as a tarball, stores it in a Kubernetes
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# ConfigMap, and patches the Headlamp deployment to add an init container that
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# extracts the plugin into the static-plugins volume before Headlamp starts.
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#
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# No kubectl exec or kubectl cp is used — only standard Kubernetes API operations
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# (create configmap, patch deployment, rollout status).
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#
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# Prerequisites:
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# - kubectl configured with access to the Headlamp namespace
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# - Plugin already built (npm run build → dist/)
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# - Headlamp deployment uses a "static-plugins" volume (emptyDir)
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#
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# Environment variables (all optional, with defaults):
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# HEADLAMP_URL — Headlamp URL for readiness check
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# HEADLAMP_NS — Kubernetes namespace (default: kube-system)
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# HEADLAMP_DEPLOY — Headlamp deployment name (default: headlamp)
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# PLUGIN_NAME — Plugin directory name (default: polaris)
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#
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# Usage:
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# npm run build
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# ./scripts/deploy-plugin-to-headlamp.sh
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set -euo pipefail
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HEADLAMP_URL="${HEADLAMP_URL:-http://headlamp.kube-system.svc.cluster.local}"
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HEADLAMP_NS="${HEADLAMP_NS:-kube-system}"
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HEADLAMP_DEPLOY="${HEADLAMP_DEPLOY:-headlamp}"
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PLUGIN_NAME="${PLUGIN_NAME:-polaris}"
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CONFIGMAP_NAME="headlamp-e2e-plugin-${PLUGIN_NAME}"
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if [ ! -d "dist" ]; then
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echo "Error: dist/ not found. Run 'npm run build' first." >&2
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exit 1
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fi
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# --- Step 1: Package plugin as tarball ---
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echo "Packaging plugin..."
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TARBALL=$(mktemp /tmp/${PLUGIN_NAME}-plugin-XXXXXX.tar.gz)
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tar czf "$TARBALL" dist/ package.json
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echo " tarball size: $(du -h "$TARBALL" | cut -f1)"
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# ConfigMap binary data limit is ~1MB
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TARBALL_SIZE=$(stat -c%s "$TARBALL" 2>/dev/null || stat -f%z "$TARBALL")
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if [ "$TARBALL_SIZE" -gt 1000000 ]; then
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echo "Error: Plugin tarball (${TARBALL_SIZE} bytes) exceeds ConfigMap 1MB limit." >&2
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echo "Consider minifying the build output or splitting into multiple ConfigMaps." >&2
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rm -f "$TARBALL"
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exit 1
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fi
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# --- Step 2: Store tarball in a ConfigMap ---
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echo "Creating ConfigMap ${CONFIGMAP_NAME}..."
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kubectl create configmap "$CONFIGMAP_NAME" \
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--from-file="plugin.tar.gz=${TARBALL}" \
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-n "$HEADLAMP_NS" \
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--dry-run=client -o yaml | kubectl apply -f -
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rm -f "$TARBALL"
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# --- Step 3: Patch the Headlamp deployment ---
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# Adds an init container that extracts the plugin tarball into the static-plugins
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# volume. Uses strategic merge — init containers merge by name, so re-running
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# this script updates the existing init container rather than adding duplicates.
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# A timestamp annotation forces a rollout even if the patch shape is unchanged.
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echo "Patching Headlamp deployment..."
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DEPLOY_TIMESTAMP=$(date -u +%Y%m%dT%H%M%SZ)
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kubectl patch deployment "$HEADLAMP_DEPLOY" -n "$HEADLAMP_NS" --type=strategic -p "$(cat <<EOF
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{
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"spec": {
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"template": {
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"metadata": {
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"annotations": {
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"e2e-plugin-deploy-ts": "${DEPLOY_TIMESTAMP}"
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}
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},
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"spec": {
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"initContainers": [
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{
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"name": "install-e2e-plugin",
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"image": "busybox:latest",
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"command": [
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"sh", "-c",
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"mkdir -p /plugins/${PLUGIN_NAME} && cd /plugins/${PLUGIN_NAME} && tar xzf /plugin-src/plugin.tar.gz && cp -a dist/* . && rm -rf dist && echo 'Plugin extracted successfully' && ls -la"
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],
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"volumeMounts": [
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{"name": "static-plugins", "mountPath": "/plugins"},
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{"name": "e2e-plugin-src", "mountPath": "/plugin-src", "readOnly": true}
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]
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}
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],
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"volumes": [
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{
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"name": "e2e-plugin-src",
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"configMap": {
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"name": "${CONFIGMAP_NAME}"
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}
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}
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]
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}
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}
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}
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}
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EOF
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)"
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# --- Step 4: Wait for rollout ---
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echo "Waiting for rollout..."
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kubectl rollout status deployment/"$HEADLAMP_DEPLOY" -n "$HEADLAMP_NS" --timeout=180s
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# --- Step 5: Verify Headlamp is ready ---
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echo "Verifying Headlamp readiness..."
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for i in $(seq 1 30); do
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HTTP_CODE=$(curl -s -o /dev/null -w '%{http_code}' --connect-timeout 5 "$HEADLAMP_URL" || true)
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if [ "$HTTP_CODE" = "200" ]; then
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echo "Headlamp is ready (HTTP 200)"
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# Verify plugin is loaded
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PLUGIN_CHECK=$(curl -sf "$HEADLAMP_URL/plugins" 2>/dev/null || echo "[]")
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if echo "$PLUGIN_CHECK" | grep -q "$PLUGIN_NAME"; then
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echo "Plugin '${PLUGIN_NAME}' is loaded"
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else
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echo "::warning::Plugin '${PLUGIN_NAME}' not found in /plugins response"
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fi
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exit 0
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fi
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echo " attempt $i/30 — HTTP $HTTP_CODE"
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sleep 5
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done
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echo "Error: Headlamp did not recover after plugin deploy" >&2
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exit 1
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