pod 的亲和性，反亲和性 实验
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pod 的亲和性，反亲和性 实验
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文章目录
- 1 ,环境准备
- 2 亲和性+ In 测试
- 3 亲和性+NotIn 测试
- 4 非亲和性+In 测试
- 5 非亲和性 + NotIn 测试
1 ,环境准备
node01、 node02 都有标签 test=a，有个pod1 运行在node01上， 标签为app=myapp01
#设置node01和node02节点，拥有标签 test=a [root@master demo]# kubectl label nodes node{01,02} test=a --overwrite node/node01 labeled node/node02 labeled#查看拥有标签test=a的节点 [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 #声明式创建pod [root@master demo]# kubectl apply -f test.yaml pod/myapp01 created#查看pod myapp01的详细信息的标签 [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=myapp012 亲和性+ In 测试
[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: testpod拥有app=myapp01 标签（设这个pod为x），则把新pod调度到和 pod x 拥有同一个拓扑域test=a 的 节点上。
[root@master demo]# for i in myapp{11..15}; do kubectl apply -f a.yaml; sed -ri "4s#myapp1[0-9]#$i#" a.yaml; done pod/myapp10 created pod/myapp11 created pod/myapp12 created pod/myapp13 created pod/myapp14 created [root@master demo]# kubectl get pods -o wide --show-labels NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES LABELS myapp01 1/1 Running 0 88m 10.244.1.112 node01 <none> <none> app=myapp01 myapp10 1/1 Running 0 6s 10.244.2.104 node02 <none> <none> app=myapp03 myapp11 1/1 Running 0 6s 10.244.1.138 node01 <none> <none> app=myapp03 myapp12 1/1 Running 0 5s 10.244.2.105 node02 <none> <none> app=myapp03 myapp13 1/1 Running 0 5s 10.244.1.139 node01 <none> <none> app=myapp03 myapp14 1/1 Running 0 5s 10.244.2.106 node02 <none> <none> app=myapp03因为拓扑域test=a内，已经有了pod存在于node01节点上，所以
3 亲和性+NotIn 测试
[root@master demo]# vim a.yaml apiVersion: v1 kind: Pod metadata:name: myapp10labels:app: myapp03 spec:containers:- name: myapp03image: soscscs/myapp:v1affinity:podAffinity:requiredDuringSchedulingIgnoredDuringExecution:- labelSelector:matchExpressions:- key: appoperator: NotInvalues:- myapp01topologyKey: test [root@master demo]# kubectl delete pod myapp{10..14};for i in myapp{11..15}; do kubectl apply -f a.yaml; sed -ri "4s#myapp1[0-9]#$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=myapp034 非亲和性+In 测试
[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]#$i#" a.yaml; done pod "myapp10" deleted pod "myapp11" deleted pod "myapp12" deleted pod "myapp13" deleted pod "myapp14" deleted pod/myapp10 created pod/myapp11 created pod/myapp12 created pod/myapp13 created pod/myapp14 created [root@master demo]# kubectl get pods -o wide --show-labels NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES LABELS myapp01 1/1 Running 0 96m 10.244.1.112 node01 <none> <none> app=myapp01 myapp10 0/1 Pending 0 4s <none> <none> <none> <none> app=myapp03 myapp11 0/1 Pending 0 3s <none> <none> <none> <none> app=myapp03 myapp12 0/1 Pending 0 3s <none> <none> <none> <none> app=myapp03 myapp13 0/1 Pending 0 3s <none> <none> <none> <none> app=myapp03 myapp14 0/1 Pending 0 3s <none> <none> <none> <none> app=myapp03[root@master demo]# kubectl describe pod myapp105 非亲和性 + NotIn 测试
[root@master demo]# vim a.yaml apiVersion: v1 kind: Pod metadata:name: myapp10labels:app: myapp03 spec:containers:- name: myapp03image: soscscs/myapp:v1affinity:podAntiAffinity:requiredDuringSchedulingIgnoredDuringExecution:- labelSelector:matchExpressions:- key: appoperator: NotInvalues:- myapp01topologyKey: test [root@master demo]# kubectl delete pod myapp{10..14};for i in myapp{11..15}; do kubectl apply -f a.yaml; sed -ri "4s#myapp1[0-9]#$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总结
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