deployment.yaml

{{- /*
# Copyright 2022 Google LLC
#
# 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
#
#     https://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.
*/}}
apiVersion: apps/v1
kind: Deployment
metadata:
  name: rule-evaluator
  labels:
    {{- include "rule-evaluator.labels" . | nindent 4 }}
spec:
  selector:
    matchLabels:
      {{- include "rule-evaluator.selectorLabels" . | nindent 6 }}
  template:
    metadata:
      labels:
        {{- include "rule-evaluator.templateLabels" . | nindent 8 }}
    spec:
      serviceAccountName: {{ include "rule-evaluator.serviceAccountName" . }}
      automountServiceAccountToken: true
      initContainers:
      - name: config-init
        image: {{.Values.images.bash.image}}:{{.Values.images.bash.tag}}
        command: ['/bin/bash', '-c', 'touch /prometheus/config_out/config.yaml']
        volumeMounts:
        - name: config-out
          mountPath: /prometheus/config_out
      containers:
      - name: evaluator
        image: {{.Values.images.ruleEvaluator.image}}:{{.Values.images.ruleEvaluator.tag}}
        args:
        - "--config.file=/prometheus/config_out/config.yaml"
        - "--web.listen-address=:9092"
        ports:
        - name: r-eval-metrics
          containerPort: 9092
        resources: {{- toYaml $.Values.resources.ruleEvaluator | nindent 10}}
        volumeMounts:
        - name: config-out
          readOnly: true
          mountPath: /prometheus/config_out
        - name: rules-out
          readOnly: true
          mountPath: /etc/rules
        livenessProbe:
          httpGet:
            port: r-eval-metrics
            path: /-/healthy
        readinessProbe:
          httpGet:
            port: r-eval-metrics
            path: /-/ready
          # Readiness attempts a query round-trip so we need a more generous timeout.
          timeoutSeconds: 5
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            drop:
            - all
          privileged: false
          readOnlyRootFilesystem: true
      - name: config-reloader
        image: {{.Values.images.configReloader.image}}:{{.Values.images.configReloader.tag}}
        args:
        - --config-file=/prometheus/config/config.yaml
        - --config-file-output=/prometheus/config_out/config.yaml
        - --config-dir=/etc/rules
        - --config-dir-output=/prometheus/rules_out
        - --reload-url=http://127.0.0.1:9092/-/reload
        - --ready-url=http://127.0.0.1:9092/-/ready
        - --listen-address=:9093
        ports:
        - name: cfg-rel-metrics
          protocol: TCP
          containerPort: 9093
        resources: {{- toYaml $.Values.resources.configReloader | nindent 10}}
        volumeMounts:
        - name: config
          readOnly: true
          mountPath: /prometheus/config
        - name: config-out
          mountPath: /prometheus/config_out
        - name: rules
          readOnly: true
          mountPath: /etc/rules
        - name: rules-out
          mountPath: /prometheus/rules_out
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            drop:
            - all
          privileged: false
          readOnlyRootFilesystem: true
      volumes:
      - name: config
        configMap:
          name: rule-evaluator
      - name: config-out
        emptyDir: {}
      - name: rules
        # Mount exactly one ConfigMap per rule type (3 total)
        # - rules: namespace-scoped Rules
        # - clusterrules: cluster-scoped ClusterRules
        # - globalrules: GlobalRules
        projected:
          sources:
          - configMap:
              name: rules
              optional: true
          - configMap:
              name: clusterrules
              optional: true
          - configMap:
              name: globalrules
              optional: true
      - name: rules-out
        emptyDir: {}
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: kubernetes.io/arch
                operator: In
                values:
                - arm64
                - amd64
              - key: kubernetes.io/os
                operator: In
                values:
                - linux
      tolerations:
      - key: "components.gke.io/gke-managed-components"
        operator: "Exists"
      - value: "amd64"
        effect: "NoSchedule"
        key: "kubernetes.io/arch"
        operator: "Equal"
      - value: "arm64"
        effect: "NoSchedule"
        key: "kubernetes.io/arch"
        operator: "Equal"
      securityContext:
        runAsGroup: 1000
        runAsNonRoot: true
        runAsUser: 1000
        seccompProfile:
          type: RuntimeDefault