jklein
9f739e4493
The delegation nginx serves the .well-known documents from an nginx.conf that is rendered from ingress.domain and mounted with subPath. Changing the domain rewrote the ConfigMap but left the running pod untouched: the pod template was unchanged, so nothing rolled, and the kubelet never refreshes a subPath mount. The pod kept serving the old delegation while looking perfectly healthy - the failure mode from #82. The pod template now carries checksum/config over the rendered delegation ConfigMap, so a changed nginx.conf rolls the deployment. Also documents the limit that remains for homeserver.yaml: it comes from a 1Password-backed Secret, whose content Helm never sees, and the operator's own auto-restart only ever covers Deployments - not this StatefulSet. That case needs a manual rollout restart, which the values.yaml now says out loud. Major bump: runtime behavior changes - a delegation config change now costs a restart of the nginx pod (a few seconds, no persistent state).
63 lines
2.7 KiB
YAML
63 lines
2.7 KiB
YAML
{{- if .Values.matrix.delegation.enabled }}
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: {{ .Release.Name }}-{{ .Chart.Name }}-delegation-nginx-deployment
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labels:
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app: {{ .Release.Name }}-{{ .Chart.Name }}-delegation-nginx-deployment
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spec:
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replicas: {{ include "matrix-synapse.replicas" (dict "scaleDown" .Values.scaleDown "replicas" .Values.matrix.delegation.replicas) }}
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selector:
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matchLabels:
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app: {{ .Release.Name }}-{{ .Chart.Name }}-delegation-nginx-deployment
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template:
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metadata:
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labels:
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app: {{ .Release.Name }}-{{ .Chart.Name }}-delegation-nginx-deployment
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annotations:
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# Hash of the rendered delegation ConfigMap: a changed nginx.conf
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# changes the pod template and thus rolls the pods. Without it the
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# running nginx keeps serving the old .well-known documents - the
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# config is mounted with subPath (never refreshed by the kubelet) and
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# nginx reads it only at start.
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checksum/config: {{ include (print $.Template.BasePath "/matrix-delegation-nginx.configmap.yaml") . | sha256sum }}
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spec:
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automountServiceAccountToken: false
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securityContext:
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{{- toYaml .Values.matrix.delegation.securityContext.pod | nindent 8 }}
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containers:
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- name: {{ .Release.Name }}-{{ .Chart.Name }}-delegation-nginx
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image: "{{ .Values.matrix.delegation.image.repository }}:{{ .Values.matrix.delegation.image.tag }}"
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securityContext:
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{{- toYaml .Values.matrix.delegation.securityContext.container | nindent 12 }}
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ports:
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- containerPort: 8080
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name: http
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volumeMounts:
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- name: nginx-config
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mountPath: /etc/nginx/nginx.conf
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subPath: nginx.conf
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# The mounted nginx.conf points the pid file and all temp paths to
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# /tmp, so a single writable emptyDir suffices with a read-only
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# root filesystem.
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- name: tmp
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mountPath: /tmp
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resources:
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{{- include "matrix-synapse.resources" .Values.matrix.delegation.resources | nindent 12 }}
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readinessProbe:
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{{- toYaml .Values.matrix.delegation.readinessProbe | nindent 12 }}
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livenessProbe:
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{{- toYaml .Values.matrix.delegation.livenessProbe | nindent 12 }}
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startupProbe:
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{{- toYaml .Values.matrix.delegation.startupProbe | nindent 12 }}
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volumes:
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- name: tmp
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emptyDir: {}
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- name: nginx-config
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configMap:
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name: {{ .Release.Name }}-{{ .Chart.Name }}-delegation-nginx-configmap
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items:
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- key: nginx.conf
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path: nginx.conf
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{{- end }}
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