autoscaler.yaml

# Copyright 2018 The Knative 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
#
#     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: autoscaler
  namespace: knative-serving
  labels:
    app.kubernetes.io/component: autoscaler
    app.kubernetes.io/name: knative-serving
    app.kubernetes.io/version: devel
spec:
  replicas: 1
  selector:
    matchLabels:
      app: autoscaler
  strategy:
     type: RollingUpdate
     rollingUpdate:
       maxUnavailable: 0
  template:
    metadata:
      labels:
        app: autoscaler
        app.kubernetes.io/component: autoscaler
        app.kubernetes.io/name: knative-serving
        app.kubernetes.io/version: devel
    spec:
      # To avoid node becoming SPOF, spread our replicas to different nodes.
      affinity:
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - podAffinityTerm:
              labelSelector:
                matchLabels:
                  app: autoscaler
              topologyKey: kubernetes.io/hostname
            weight: 100

      serviceAccountName: controller
      containers:
      - name: autoscaler
        # This is the Go import path for the binary that is containerized
        # and substituted here.
        image: ko://knative.dev/serving/cmd/autoscaler

        resources:
          requests:
            cpu: 100m
            memory: 100Mi
          limits:
            cpu: 1000m
            memory: 1000Mi

        env:
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: POD_IP
          valueFrom:
            fieldRef:
              fieldPath: status.podIP
        - name: SYSTEM_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        - name: CONFIG_LOGGING_NAME
          value: config-logging
        - name: CONFIG_OBSERVABILITY_NAME
          value: config-observability
        # TODO(https://github.com/knative/pkg/pull/953): Remove stackdriver specific config
        - name: METRICS_DOMAIN
          value: knative.dev/serving

        securityContext:
          allowPrivilegeEscalation: false
          readOnlyRootFilesystem: true
          runAsNonRoot: true
          capabilities:
            drop:
            - ALL
          seccompProfile:
            type: RuntimeDefault

        ports:
        - name: metrics
          containerPort: 9090
        - name: profiling
          containerPort: 8008
        - name: websocket
          containerPort: 8080

        readinessProbe:
          httpGet:
            port: 8080
        livenessProbe:
          httpGet:
            port: 8080
          failureThreshold: 6

---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: autoscaler
    app.kubernetes.io/component: autoscaler
    app.kubernetes.io/name: knative-serving
    app.kubernetes.io/version: devel
  name: autoscaler
  namespace: knative-serving
spec:
  ports:
  # Define metrics and profiling for them to be accessible within service meshes.
  - name: http-metrics
    port: 9090
    targetPort: 9090
  - name: http-profiling
    port: 8008
    targetPort: 8008
  - name: http
    port: 8080
    targetPort: 8080
  selector:
    app: autoscaler