Ⅰ、Pod.spec.nodeName 将 Pod 直接调度到指定的 Node 节点上，会跳过 Scheduler 的调度策略，该匹配规则是强制匹配
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apiVersion: extensions/v1beta1kind: Deploymentmetadata: name: mywebspec: replicas: 7 template: metadata: labels: app: myweb spec: nodeName: k8s-node01 containers: - name: myweb image: hub.atguigu.com/library/myapp:v1 ports: - containerPort: 80 |
Ⅱ、Pod.spec.nodeSelector：通过 kubernetes 的 label-selector 机制选择节点，由调度器调度策略匹配 label，而后调度 Pod 到目标节点，该匹配规则属于强制约束
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apiVersion: extensions/v1beta1kind: Deploymentmetadata: name: mywebspec: replicas: 2 template: metadata: labels: app: myweb spec: nodeSelector: type: backEndNode1 containers: - name: myweb image: harbor/tomcat:8.5-jre8 ports: - containerPort: 80 |