openstack-helm-infra/prometheus-alertmanager/templates/statefulset.yaml

{{/*
Copyright 2017 The Openstack-Helm Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/}}

{{- if .Values.manifests.statefulset }}
{{- $envAll := . }}

{{- $mounts_alertmanager := .Values.pod.mounts.alertmanager.alertmanager }}
{{- $mounts_alertmanager_init := .Values.pod.mounts.alertmanager.init_container }}

{{- $serviceAccountName := "alertmanager" }}
{{ tuple $envAll "alertmanager" $serviceAccountName | include "helm-toolkit.snippets.kubernetes_pod_rbac_serviceaccount" }}
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: alertmanager
  annotations:
    {{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" }}
  labels:
{{ tuple $envAll "alertmanager" "server" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
spec:
  serviceName: {{ tuple "alerts" "discovery" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
  replicas: {{ .Values.pod.replicas.alertmanager }}
  selector:
    matchLabels:
{{ tuple $envAll "alertmanager" "server" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 6 }}
  template:
    metadata:
      labels:
{{ tuple $envAll "alertmanager" "server" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 8 }}
      annotations:
{{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" | indent 8 }}
        configmap-bin-hash: {{ tuple "configmap-bin.yaml" . | include "helm-toolkit.utils.hash" }}
        configmap-etc-hash: {{ tuple "configmap-etc.yaml" . | include "helm-toolkit.utils.hash" }}
{{ dict "envAll" $envAll "podName" "alertmanager" "containerNames" (list "alertmanager") | include "helm-toolkit.snippets.kubernetes_mandatory_access_control_annotation" | indent 8 }}
    spec:
      securityContext:
        readOnlyRootFilesystem: true
{{ dict "envAll" $envAll "application" "alertmanager" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
      serviceAccountName: {{ $serviceAccountName }}
      affinity:
{{ tuple $envAll "alertmanager" "server" | include "helm-toolkit.snippets.kubernetes_pod_anti_affinity" | indent 8 }}
      nodeSelector:
        {{ .Values.labels.alertmanager.node_selector_key }}: {{ .Values.labels.alertmanager.node_selector_value | quote }}
      terminationGracePeriodSeconds: {{ .Values.pod.lifecycle.termination_grace_period.alertmanager.timeout | default "30" }}
      initContainers:
{{ tuple $envAll "alertmanager" list | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
        - name: alertmanager-perms
{{ tuple $envAll "alertmanager" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.alertmanager | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
          securityContext:
            runAsUser: 0
          command:
            - chown
            - -R
            - "nobody:"
            - /var/lib/alertmanager/data
          volumeMounts:
            - name: alertmanager-data
              mountPath: /var/lib/alertmanager/data
      containers:
        - name: alertmanager
{{ tuple $envAll "alertmanager" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.alertmanager | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
          securityContext:
            allowPrivilegeEscalation: false
          command:
            - /tmp/alertmanager.sh
            - start
          lifecycle:
            preStop:
              exec:
                command:
                  - /tmp/alertmanager.sh
                  - stop
          env:
            - name: DISCOVERY_SVC
              value: {{ tuple "alerts" "discovery" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
            - name: MESH_PORT
              value: {{ tuple "alerts" "internal" "mesh" . | include "helm-toolkit.endpoints.endpoint_port_lookup" | quote }}
          ports:
            - name: alerts-api
              containerPort: {{ tuple "alerts" "internal" "api" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
            - name: peer-mesh
              containerPort: {{ tuple "alerts" "internal" "mesh" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
          readinessProbe:
            httpGet:
              path: /#/status
              port: {{ tuple "alerts" "internal" "api" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
            initialDelaySeconds: 30
            timeoutSeconds: 30
          volumeMounts:
            - name: etc-alertmanager
              mountPath: /etc/config
            - name: alertmanager-etc
              mountPath: /etc/alertmanager/template/alert-templates.tmpl
              subPath: alert-templates.tmpl
              readOnly: true
            - name: alertmanager-etc
              mountPath: /etc/alertmanager/config.yml
              subPath: config.yml
              readOnly: true
            - name: alertmanager-bin
              mountPath: /tmp/alertmanager.sh
              subPath: alertmanager.sh
              readOnly: true
            - name: alertmanager-data
              mountPath: /var/lib/alertmanager/data
{{ if $mounts_alertmanager.volumeMounts }}{{ toYaml $mounts_alertmanager.volumeMounts | indent 12 }}{{ end }}
      volumes:
        - name: etc-alertmanager
          emptyDir: {}
        - name: alertmanager-etc
          configMap:
            name: alertmanager-etc
        - name: alertmanager-bin
          configMap:
            name: alertmanager-bin
            defaultMode: 0555
{{ if $mounts_alertmanager.volumes }}{{ toYaml $mounts_alertmanager.volumes | indent 8 }}{{ end }}
{{- if not .Values.storage.enabled }}
        - name: alertmanager-data
          emptyDir: {}
{{- else }}
  volumeClaimTemplates:
    - metadata:
        name: alertmanager-data
      spec:
        accessModes: {{ .Values.storage.pvc.access_mode }}
        resources:
          requests:
            storage: {{ .Values.storage.requests.storage  }}
        storageClassName: {{ .Values.storage.storage_class }}
{{- end }}
{{- end }}