95 lines
2.9 KiB
Django/Jinja
95 lines
2.9 KiB
Django/Jinja
---
|
|
apiVersion: extensions/v1beta1
|
|
kind: Deployment
|
|
metadata:
|
|
name: coredns{{ coredns_ordinal_suffix | default('') }}
|
|
namespace: kube-system
|
|
labels:
|
|
k8s-app: coredns{{ coredns_ordinal_suffix | default('') }}
|
|
kubernetes.io/cluster-service: "true"
|
|
addonmanager.kubernetes.io/mode: Reconcile
|
|
kubernetes.io/name: "CoreDNS"
|
|
spec:
|
|
replicas: {{ coredns_replicas }}
|
|
strategy:
|
|
type: RollingUpdate
|
|
rollingUpdate:
|
|
maxUnavailable: 0
|
|
maxSurge: 10%
|
|
selector:
|
|
matchLabels:
|
|
k8s-app: coredns{{ coredns_ordinal_suffix | default('') }}
|
|
template:
|
|
metadata:
|
|
labels:
|
|
k8s-app: coredns{{ coredns_ordinal_suffix | default('') }}
|
|
annotations:
|
|
scheduler.alpha.kubernetes.io/critical-pod: ''
|
|
spec:
|
|
serviceAccountName: coredns
|
|
tolerations:
|
|
- key: node-role.kubernetes.io/master
|
|
effect: NoSchedule
|
|
- key: "CriticalAddonsOnly"
|
|
operator: "Exists"
|
|
affinity:
|
|
podAntiAffinity:
|
|
requiredDuringSchedulingIgnoredDuringExecution:
|
|
- topologyKey: "kubernetes.io/hostname"
|
|
labelSelector:
|
|
matchLabels:
|
|
k8s-app: coredns{{ coredns_ordinal_suffix | default('') }}
|
|
nodeAffinity:
|
|
preferredDuringSchedulingIgnoredDuringExecution:
|
|
- weight: 100
|
|
preference:
|
|
matchExpressions:
|
|
- key: node-role.kubernetes.io/master
|
|
operator: In
|
|
values:
|
|
- "true"
|
|
containers:
|
|
- name: coredns
|
|
image: "{{ coredns_image_repo }}:{{ coredns_image_tag }}"
|
|
imagePullPolicy: {{ k8s_image_pull_policy }}
|
|
resources:
|
|
# TODO: Set memory limits when we've profiled the container for large
|
|
# clusters, then set request = limit to keep this container in
|
|
# guaranteed class. Currently, this container falls into the
|
|
# "burstable" category so the kubelet doesn't backoff from restarting it.
|
|
limits:
|
|
memory: {{ dns_memory_limit }}
|
|
requests:
|
|
cpu: {{ dns_cpu_requests }}
|
|
memory: {{ dns_memory_requests }}
|
|
args: [ "-conf", "/etc/coredns/Corefile" ]
|
|
volumeMounts:
|
|
- name: config-volume
|
|
mountPath: /etc/coredns
|
|
ports:
|
|
- containerPort: 53
|
|
name: dns
|
|
protocol: UDP
|
|
- containerPort: 53
|
|
name: dns-tcp
|
|
protocol: TCP
|
|
- containerPort: 9153
|
|
name: metrics
|
|
protocol: TCP
|
|
livenessProbe:
|
|
httpGet:
|
|
path: /health
|
|
port: 8080
|
|
scheme: HTTP
|
|
initialDelaySeconds: 60
|
|
timeoutSeconds: 5
|
|
successThreshold: 1
|
|
failureThreshold: 5
|
|
dnsPolicy: Default
|
|
volumes:
|
|
- name: config-volume
|
|
configMap:
|
|
name: coredns
|
|
items:
|
|
- key: Corefile
|
|
path: Corefile
|