文章目錄

• • 1 ,環境準備
  • 2 親和性+ In 測試
  • 3 親和性+NotIn 測試
  • 4 非親和性+In 測試
  • 5 非親和性 + NotIn 測試

1 ,環境準備

node01、 node02 都有標簽 test=a，有個pod1 運行在node01上， 標簽為app=myapp01

#設置node01和node02節點，擁有標簽 test=a [root@master demo]# kubectl label nodes node{01,02} test=a --overwrite node/node01 labeled node/node02 labeled#查看擁有標簽test=a的節點 [root@master demo]# kubectl get nodes -l test=a NAME STATUS ROLES AGE VERSION node01 Ready <none> 7d6h v1.15.1 node02 Ready <none> 7d6h v1.15.1

[root@master demo]# vim test.yaml apiVersion: v1 kind: Pod metadata:name: myapp01labels:app: myapp01 spec:containers:- name: with-node-affinityimage: soscscs/myapp:v1 #聲明式創建pod [root@master demo]# kubectl apply -f test.yaml pod/myapp01 created#查看pod myapp01的詳細信息的標簽 [root@master demo]# kubectl get pods myapp01 -o wide --show-labels NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES LABELS myapp01 1/1 Running 0 26s 10.244.1.112 node01 <none> <none> app=myapp01

2 親和性+ In 測試

[root@master demo]# vim a.yaml apiVersion: v1 kind: Pod metadata:name: myapp10labels:app: myapp03 spec:containers:- name: myapp03image: soscscs/myapp:v1affinity:podAffinity:requiredDuringSchedulingIgnoredDuringExecution:- labelSelector:matchExpressions:- key: appoperator: Invalues:- myapp01topologyKey: test

pod擁有app=myapp01 標簽（設這個pod為x），則把新pod調度到和 pod x 擁有同一個拓撲域test=a 的 節點上。

[root@master demo]# for i in myapp{11..15}; do kubectl apply -f a.yaml; sed -ri "4s#myapp1[0-9]#$i#" a.yaml; done pod/myapp10 created pod/myapp11 created pod/myapp12 created pod/myapp13 created pod/myapp14 created [root@master demo]# kubectl get pods -o wide --show-labels NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES LABELS myapp01 1/1 Running 0 88m 10.244.1.112 node01 <none> <none> app=myapp01 myapp10 1/1 Running 0 6s 10.244.2.104 node02 <none> <none> app=myapp03 myapp11 1/1 Running 0 6s 10.244.1.138 node01 <none> <none> app=myapp03 myapp12 1/1 Running 0 5s 10.244.2.105 node02 <none> <none> app=myapp03 myapp13 1/1 Running 0 5s 10.244.1.139 node01 <none> <none> app=myapp03 myapp14 1/1 Running 0 5s 10.244.2.106 node02 <none> <none> app=myapp03

因為拓撲域test=a內，已經有了pod存在于node01節點上，所以

3 親和性+NotIn 測試

[root@master demo]# vim a.yaml apiVersion: v1 kind: Pod metadata:name: myapp10labels:app: myapp03 spec:containers:- name: myapp03image: soscscs/myapp:v1affinity:podAffinity:requiredDuringSchedulingIgnoredDuringExecution:- labelSelector:matchExpressions:- key: appoperator: NotInvalues:- myapp01topologyKey: test [root@master demo]# kubectl delete pod myapp{10..14};for i in myapp{11..15}; do kubectl apply -f a.yaml; sed -ri "4s#myapp1[0-9]#$i#" a.yaml; done pod "myapp10" deleted pod "myapp11" deleted pod "myapp12" deleted pod "myapp13" deleted pod "myapp14" deleted pod/myapp10 created pod/myapp11 created pod/myapp12 created pod/myapp13 created pod/myapp14 created [root@master demo]# kubectl get pods -o wide --show-labels NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES LABELS myapp01 1/1 Running 0 91m 10.244.1.112 node01 <none> <none> app=myapp01 myapp10 1/1 Running 0 5s 10.244.1.140 node01 <none> <none> app=myapp03 myapp11 1/1 Running 0 5s 10.244.2.107 node02 <none> <none> app=myapp03 myapp12 1/1 Running 0 4s 10.244.1.141 node01 <none> <none> app=myapp03 myapp13 1/1 Running 0 4s 10.244.2.108 node02 <none> <none> app=myapp03 myapp14 1/1 Running 0 4s 10.244.1.142 node01 <none> <none> app=myapp03

4 非親和性+In 測試

[root@master demo]# vim a.yaml apiVersion: v1 kind: Pod metadata:name: myapp10labels:app: myapp03 spec:containers:- name: myapp03image: soscscs/myapp:v1affinity:podAntiAffinity:requiredDuringSchedulingIgnoredDuringExecution:- labelSelector:matchExpressions:- key: appoperator: Invalues:- myapp01topologyKey: test [root@master demo]# kubectl delete pod myapp{10..14};for i in myapp{11..15}; do kubectl apply -f a.yaml; sed -ri "4s#myapp1[0-9]#$i#" a.yaml; done pod "myapp10" deleted pod "myapp11" deleted pod "myapp12" deleted pod "myapp13" deleted pod "myapp14" deleted pod/myapp10 created pod/myapp11 created pod/myapp12 created pod/myapp13 created pod/myapp14 created [root@master demo]# kubectl get pods -o wide --show-labels NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES LABELS myapp01 1/1 Running 0 96m 10.244.1.112 node01 <none> <none> app=myapp01 myapp10 0/1 Pending 0 4s <none> <none> <none> <none> app=myapp03 myapp11 0/1 Pending 0 3s <none> <none> <none> <none> app=myapp03 myapp12 0/1 Pending 0 3s <none> <none> <none> <none> app=myapp03 myapp13 0/1 Pending 0 3s <none> <none> <none> <none> app=myapp03 myapp14 0/1 Pending 0 3s <none> <none> <none> <none> app=myapp03[root@master demo]# kubectl describe pod myapp10

5 非親和性 + NotIn 測試

[root@master demo]# vim a.yaml apiVersion: v1 kind: Pod metadata:name: myapp10labels:app: myapp03 spec:containers:- name: myapp03image: soscscs/myapp:v1affinity:podAntiAffinity:requiredDuringSchedulingIgnoredDuringExecution:- labelSelector:matchExpressions:- key: appoperator: NotInvalues:- myapp01topologyKey: test [root@master demo]# kubectl delete pod myapp{10..14};for i in myapp{11..15}; do kubectl apply -f a.yaml; sed -ri "4s#myapp1[0-9]#$i#" a.yaml; done pod "myapp10" deleted pod "myapp11" deleted pod "myapp12" deleted pod "myapp13" deleted pod "myapp14" deleted pod/myapp10 created pod/myapp11 created pod/myapp12 created pod/myapp13 created pod/myapp14 created [root@master demo]# kubectl get pods -o wide --show-labels NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES LABELS myapp01 1/1 Running 0 102m 10.244.1.112 node01 <none> <none> app=myapp01 myapp10 1/1 Running 0 8s 10.244.2.109 node02 <none> <none> app=myapp03 myapp11 0/1 Pending 0 8s <none> <none> <none> <none> app=myapp03 myapp12 0/1 Pending 0 7s <none> <none> <none> <none> app=myapp03 myapp13 0/1 Pending 0 7s <none> <none> <none> <none> app=myapp03 myapp14 0/1 Pending 0 7s <none> <none> <none> <none> app=myapp03[root@master demo]# kubectl describe pod myapp11

總結

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