jklein
8df1913c5c
BentoPDF computes entirely in the visitor's browser; the container only serves static files through nginx. The chart is therefore close to cyberchef - same nginx-unprivileged base, uid 101, port 8080, probes on "/" - with four differences that shaped the design. Runtime config.json. The one setting reachable at runtime is the tool list. It is a static file in the middle of the web root, so it is mounted by subPath: a directory mount would hide the whole application. subPath mounts are never refreshed by the kubelet, which makes the checksum/config annotation (#82) load-bearing rather than decorative. bentopdf.config is passed through verbatim, like searxng's settings, so a key upstream adds tomorrow is a values change and not a chart change. Three env switches that would kill the pod. PORT, DISABLE_IPV6 and ROBOTS_NOINDEX are implemented as "sed -i" against files in the image, run under "set -e" in /docker-entrypoint.d/, and the base image's entrypoint aborts when one of them fails. With readOnlyRootFilesystem: true the pod therefore never starts instead of ignoring the switch - measured in k3d as CrashLoopBackOff, exit 1, "sed: can't create temp file '/etc/nginx/nginx.confXXXXXX': Read-only file system". None of the three is offered as a first-class value; values.yaml names the failure picture and the escape hatch (env block plus readOnlyRootFilesystem: false). Writable paths were measured, not copied from the upstream chart. /etc/nginx/tmp holds the pid file and /var/cache/nginx is where nginx creates its temp directories at startup - without it the master aborts with 'mkdir() "/var/cache/nginx/client_temp" failed'. /var/run is deliberately not mounted: the running pod proves it is unnecessary. Everything else about BentoPDF is a build-time argument and out of reach for any chart; values.yaml says so explicitly rather than leaving it to be discovered. Two accepted consequences are named there too: some tools fetch WASM modules from a public CDN at runtime, and the served pages carry a canonical link to the vendor's site. Fixes #174
14 lines
271 B
YAML
14 lines
271 B
YAML
apiVersion: v1
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kind: Service
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metadata:
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name: {{ .Release.Name }}-{{ .Chart.Name }}-service
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spec:
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selector:
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app: {{ .Release.Name }}-{{ .Chart.Name }}-deployment
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ports:
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- protocol: TCP
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port: 80
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targetPort: http
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name: http
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type: ClusterIP
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