# 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: activator
  namespace: knative-serving
  labels:
    serving.knative.dev/release: "v0.19.0"
spec:
  selector:
    matchLabels:
      app: activator
      role: activator
  template:
    metadata:
      annotations:
        cluster-autoscaler.kubernetes.io/safe-to-evict: "false"
      labels:
        app: activator
        role: activator
        serving.knative.dev/release: "v0.19.0"
    spec:
      serviceAccountName: controller
      containers:
        - name: activator
          # This is the Go import path for the binary that is containerized
          # and substituted here.
          image: gcr.io/knative-releases/knative.dev/serving/cmd/activator@sha256:1e3db4f2eeed42d3ef03f41cc3d07c333edab92af3653a530d6d5f370da96ab6
          # The numbers are based on performance test results from
          # https://github.com/knative/serving/issues/1625#issuecomment-511930023
          resources:
            requests:
              cpu: 300m
              memory: 60Mi
            limits:
              cpu: 1000m
              memory: 600Mi
          env:
            # Run Activator with GC collection when newly generated memory is 500%.
            - name: GOGC
              value: "500"
            - 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/internal/serving
          securityContext:
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
            runAsNonRoot: true
            capabilities:
              drop:
                - all
          ports:
            - name: metrics
              containerPort: 9090
            - name: profiling
              containerPort: 8008
            - name: http1
              containerPort: 8012
            - name: h2c
              containerPort: 8013
          readinessProbe:
            httpGet:
              port: 8012
              httpHeaders:
                - name: k-kubelet-probe
                  value: "activator"
            failureThreshold: 12
          livenessProbe:
            httpGet:
              port: 8012
              httpHeaders:
                - name: k-kubelet-probe
                  value: "activator"
            failureThreshold: 12
            initialDelaySeconds: 15
      # The activator (often) sits on the dataplane, and may proxy long (e.g.
      # streaming, websockets) requests.  We give a long grace period for the
      # activator to "lame duck" and drain outstanding requests before we
      # forcibly terminate the pod (and outstanding connections).  This value
      # should be at least as large as the upper bound on the Revision's
      # timeoutSeconds property to avoid servicing events disrupting
      # connections.
      terminationGracePeriodSeconds: 600