kube-dns-anti-affinity: kube-dns never-co-located-in-the-same-node

2025-09-15 14:14:39 +00:00 · 2017-09-08 14:53:50 -04:00
parent 6039c79f6c
commit 786f460092
3 changed files with 27 additions and 0 deletions
--- a/cluster/addons/dns/kube-dns.yaml.base
+++ b/cluster/addons/dns/kube-dns.yaml.base
@@ -84,6 +84,15 @@ spec:
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ''
    spec:
+      affinity:
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+            - labelSelector:
+                matchExpressions:
+                  - key: k8s-app
+                    operator: In
+                    values: ["kube-dns"]
+              topologyKey: kubernetes.io/hostname
      tolerations:
      - key: "CriticalAddonsOnly"
        operator: "Exists"
--- a/cluster/addons/dns/kube-dns.yaml.in
+++ b/cluster/addons/dns/kube-dns.yaml.in
@@ -84,6 +84,15 @@ spec:
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ''
    spec:
+      affinity:
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+            - labelSelector:
+                matchExpressions:
+                  - key: k8s-app
+                    operator: In
+                    values: ["kube-dns"]
+              topologyKey: kubernetes.io/hostname
      tolerations:
      - key: "CriticalAddonsOnly"
        operator: "Exists"
--- a/cluster/addons/dns/kube-dns.yaml.sed
+++ b/cluster/addons/dns/kube-dns.yaml.sed
@@ -84,6 +84,15 @@ spec:
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ''
    spec:
+      affinity:
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+            - labelSelector:
+                matchExpressions:
+                  - key: k8s-app
+                    operator: In
+                    values: ["kube-dns"]
+              topologyKey: kubernetes.io/hostname
      tolerations:
      - key: "CriticalAddonsOnly"
        operator: "Exists"