e3dcd96301
* kubedns & kubedns-autoscaler: Stick to master nodes.
- Tolerate only master nodes and not any NoSchedule taint
- Pods are on different nodes
- Pods are required to be on a master node.
* kubedns: use soft nodeAffinity.
Prefer to be on a master node, don't require.
* coredns: Stick to (different) master nodes.
- Pods are on different nodes
- Pods are preferred to be on a master node.
69 lines
2.3 KiB
Django/Jinja
69 lines
2.3 KiB
Django/Jinja
---
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# Copyright 2016 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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name: kubedns-autoscaler
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namespace: kube-system
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labels:
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k8s-app: kubedns-autoscaler
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kubernetes.io/cluster-service: "true"
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addonmanager.kubernetes.io/mode: Reconcile
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spec:
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template:
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metadata:
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labels:
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k8s-app: kubedns-autoscaler
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spec:
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tolerations:
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- effect: NoSchedule
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operator: Equal
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key: node-role.kubernetes.io/master
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affinity:
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podAntiAffinity:
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requiredDuringSchedulingIgnoredDuringExecution:
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- topologyKey: "kubernetes.io/hostname"
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labelSelector:
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matchLabels:
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k8s-app: kubedns-autoscaler
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nodeAffinity:
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preferredDuringSchedulingIgnoredDuringExecution:
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- weight: 100
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preference:
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matchExpressions:
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- key: node-role.kubernetes.io/master
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operator: In
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values:
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- "true"
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containers:
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- name: autoscaler
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image: "{{ kubednsautoscaler_image_repo }}:{{ kubednsautoscaler_image_tag }}"
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resources:
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requests:
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cpu: "20m"
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memory: "10Mi"
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command:
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- /cluster-proportional-autoscaler
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- --namespace=kube-system
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- --configmap=kubedns-autoscaler
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# Should keep target in sync with cluster/addons/dns/kubedns-controller.yaml.base
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- --target=Deployment/kube-dns
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- --default-params={"linear":{"nodesPerReplica":{{ kubedns_nodes_per_replica }},"min":{{ kubedns_min_replicas }}}}
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- --logtostderr=true
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- --v=2
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{% if rbac_enabled %}
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serviceAccountName: cluster-proportional-autoscaler
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{% endif %}
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