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autoscaler support for CoreDNS

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This commit is contained in:
Sandeep Rajan
2018-04-11 11:21:23 -04:00
parent 6bf1871e73
commit 8d5b9d3c36
5 changed files with 41 additions and 22 deletions
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17
cluster/addons/dns/coredns.yaml.base
View File

@@ -74,23 +74,26 @@ metadata:
name: coredns
namespace: kube-system
labels:
k8s-app: coredns
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "CoreDNS"
spec:
replicas: 2
# replicas: not specified here:
# 1. In order to make Addon Manager do not reconcile this replicas parameter.
# 2. Default is 1.
# 3. Will be tuned in real time if DNS horizontal auto-scaling is turned on.
strategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 1
selector:
matchLabels:
k8s-app: coredns
k8s-app: kube-dns
template:
metadata:
labels:
k8s-app: coredns
k8s-app: kube-dns
spec:
serviceAccountName: coredns
tolerations:
@@ -140,16 +143,16 @@ spec:
apiVersion: v1
kind: Service
metadata:
name: coredns
name: kube-dns
namespace: kube-system
labels:
k8s-app: coredns
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "CoreDNS"
spec:
selector:
k8s-app: coredns
k8s-app: kube-dns
clusterIP: __PILLAR__DNS__SERVER__
ports:
- name: dns

17
cluster/addons/dns/coredns.yaml.in
View File

@@ -74,23 +74,26 @@ metadata:
name: coredns
namespace: kube-system
labels:
k8s-app: coredns
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "CoreDNS"
spec:
replicas: 2
# replicas: not specified here:
# 1. In order to make Addon Manager do not reconcile this replicas parameter.
# 2. Default is 1.
# 3. Will be tuned in real time if DNS horizontal auto-scaling is turned on.
strategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 1
selector:
matchLabels:
k8s-app: coredns
k8s-app: kube-dns
template:
metadata:
labels:
k8s-app: coredns
k8s-app: kube-dns
spec:
serviceAccountName: coredns
tolerations:
@@ -140,16 +143,16 @@ spec:
apiVersion: v1
kind: Service
metadata:
name: coredns
name: kube-dns
namespace: kube-system
labels:
k8s-app: coredns
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "CoreDNS"
spec:
selector:
k8s-app: coredns
k8s-app: kube-dns
clusterIP: {{ pillar['dns_server'] }}
ports:
- name: dns

17
cluster/addons/dns/coredns.yaml.sed
View File

@@ -74,23 +74,26 @@ metadata:
name: coredns
namespace: kube-system
labels:
k8s-app: coredns
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "CoreDNS"
spec:
replicas: 2
# replicas: not specified here:
# 1. In order to make Addon Manager do not reconcile this replicas parameter.
# 2. Default is 1.
# 3. Will be tuned in real time if DNS horizontal auto-scaling is turned on.
strategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 1
selector:
matchLabels:
k8s-app: coredns
k8s-app: kube-dns
template:
metadata:
labels:
k8s-app: coredns
k8s-app: kube-dns
spec:
serviceAccountName: coredns
tolerations:
@@ -140,16 +143,16 @@ spec:
apiVersion: v1
kind: Service
metadata:
name: coredns
name: kube-dns
namespace: kube-system
labels:
k8s-app: coredns
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "CoreDNS"
spec:
selector:
k8s-app: coredns
k8s-app: kube-dns
clusterIP: $DNS_SERVER_IP
ports:
- name: dns