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pod_affinity.yaml

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+apiVersion: v1
+kind: Pod
+metadata:
+  name: go-http
+  labels:
+    app: go
+    version: v1
+spec:
+  containers:
+    - name: go-http
+      image: leigg/hellok8s:v1
+#  nodeSelector: 如果和亲和性同时配置，则必须都满足
+  affinity:
+    nodeAffinity: # 不会绕过污点机制
+      # 下面两项可以二选一，也可以同时存在
+      # - requiredDuringSchedulingIgnoredDuringExecution
+      # - preferredDuringSchedulingIgnoredDuringExecution
+      requiredDuringSchedulingIgnoredDuringExecution: # 硬性调度
+        nodeSelectorTerms: # 多个 matchExpressions 之间的关系是【或】关系
+          - matchExpressions: # 单个 matchExpressions 中的多个表达式是【且】关系
+              # operator 支持 In、NotIn、Exists、DoesNotExist、Gt 和 Lt
+              - {key: disktype, operator: In, values: ["ssd"]}
+#      preferredDuringSchedulingIgnoredDuringExecution: # 软性调度
+#        - weight: 1 # 相比其他 软性调度 策略的权重，范围是1-100
+#          preference:
+#            - matchExpressions:
+#                - { key: disktype, operator: In, values: [ "ssd" ] }
+#        - weight: 5
+#          preference:
+#            - matchExpressions:
+#                - { key: cpu, operator: In, values: [ "4core" ] }

pod_affinityPod.yaml

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+apiVersion: v1
+kind: Pod
+metadata:
+  name: go-http-podaffinity
+spec:
+  containers:
+    - name: go-http
+      image: leigg/hellok8s:v1
+  #  nodeSelector: 如果和亲和性同时配置，则必须都满足
+  affinity:
+    # podAffinity 可以和 podAntiAffinity 同时存在
+    podAffinity: # pod亲和性
+      requiredDuringSchedulingIgnoredDuringExecution:
+        - labelSelector:
+            matchExpressions:
+              - { key: app, operator: In, values: [ "go" ] }
+          topologyKey: kubernetes.io/os # 必须指定，它是你希望调度Pod的目标节点群共有的标签，亲和性规则也仅会在此节点群生效
+    #          namespaces: ["dev","test"]  允许指定命名空间，不指定则是当前Pod所在的空间
+    #          namespaceSelector: # 或者 使用标签筛选命令空间
+    #            matchExpressions:
+    #              - key:
+    #                operator:
+    #            matchLabels:
+    #              - environment: production
+    #      preferredDuringSchedulingIgnoredDuringExecution:
+    #        - podAffinityTerm:
+    #            topologyKey:
+    #          weight:
+    podAntiAffinity: # pod反亲和性
+      requiredDuringSchedulingIgnoredDuringExecution:
+        - labelSelector:
+            matchExpressions:
+              - { key: highcpu, operator: In, values: [ "true" ] }
+          topologyKey: kubernetes.io/hostname # 反亲和性中，此key的值固定为 kubernetes.io/hostname

pod_nodeLabel.yaml

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+apiVersion: v1
+kind: Pod
+metadata:
+  name: go-http
+  labels:
+    app: go
+    version: v1
+spec:
+  containers:
+    - name: go-http
+      image: leigg/hellok8s:v1
+  nodeSelector:
+    disktype: ssd

pod_nodeName.yaml

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+# 注意所有的name都只能使用 小写字母 - . 组合
+apiVersion: v1
+kind: Pod
+metadata:
+  name: go-http
+  labels:
+    app: go
+    version: v1
+spec:
+  containers:
+    - name: go-http
+      image: leigg/hellok8s:v1
+  nodeName: k8s-master

pods_diff_labels.yaml

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+apiVersion: v1
+kind: Pod
+metadata:
+  name: go-http-master
+  labels:
+    app: "go"
+spec:
+  nodeName: k8s-master
+  containers:
+    - name: go-http
+      image: leigg/hellok8s:v1
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: go-http-node1
+  labels:
+    app: "go"
+    highcpu: "true"
+spec:
+  nodeName: k8s-node1
+  containers:
+    - name: go-http
+      image: leigg/hellok8s:v1