导语：因为在集群中有2个pod需要调度在一台机器上。需要获取机器的uuid信息做校验。

根据其他deployment的label调度

在deployment中添加如下

    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchExpressions:
              - key: app
                operator: In
                values:
                - store
            topologyKey: "kubernetes.io/hostname"

完整deployment如下

# Source: base-deepwise-k8s/templates/platform-dep.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: platform-dp
  namespace: helm-deepwise
spec:
  strategy:
    type: Recreate
  replicas: 1
  selector:
    matchLabels:
      app: platform
      env: helm-deepwise
  template:
    metadata:
      labels:
        app: platform
        env: helm-deepwise
    spec:
      serviceAccountName: helm-deepwise-operator
      affinity:
        podAffinity:
        #podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchExpressions:
              - key: app
                operator: In
                values:
                - aiserverconfig
#              - key: env
#                operator: In
#                values:
#                - helm-deepwise
            topologyKey: "kubernetes.io/hostname"

            #topologyKey: "kubernetes.io/hostname"
#      hostNetwork: true
      # 使用主机网络
 #     dnsPolicy: ClusterFirstWithHostNet
      initContainers:
        - command: ['sh', '-c', "until nslookup mysql-headless.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for mydb; sleep 2; done"]
          image: busybox:1.28
          name: wait-for-mysql
        - command: ['sh', '-c', "until nslookup zk-headless.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for mydb; sleep 2; done"]
          image: busybox:1.28
          name: wait-for-zk
        - command: ['sh', '-c', "until nslookup aiserverconfig-headless.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for mydb; sleep 2; done"]
          image: busybox:1.28
          name: wait-for-aiserverconfig
        - command: ['sh', '-c', "until nslookup aiserver-headless.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for mydb; sleep 2; done"]
          image: busybox:1.28
          name: wait-for-aiserver
      restartPolicy: Always
      containers:
      - name: platform
        image: xxx
        #image: xxxxx
#        command: ["sh","-c","rm -rf /etc/sign.conf  && cp /srv/sign/sign.conf /etc/sign.conf  && tail -f /dev/null"]
        command: ["sh","-c","rm -rf /etc/sign.conf  && cp /srv/sign/sign.conf /etc/sign.conf && sh /root/platform/startup.sh "]
#        command:
#          - bash
#          - -c
#          - /root/platform/startup.sh
        #image: platform:cta_ge_930_2021122_013
#        livenessProbe:
#          httpGet:
#            path: /echo
#            port: 11380
#          initialDelaySeconds: 40
#          periodSeconds: 30
#          failureThreshold: 2
#          timeoutSeconds: 10
        env:
        - name: NVIDIA_DRIVER_CAPABILITIES
          value: all
        volumeMounts:
        - name: sign-pvc
          mountPath: /srv/sign
        - name: dicom-pvc
          mountPath: /data1/inputdata
        - name: log-pvc
          mountPath: /root/platform/log
        - name: log-jvm-pvc
          mountPath: /data1/jvm

      volumes:
      - name: sign-pvc
        persistentVolumeClaim:
          claimName: sign-pv-claim
      - name: log-pvc
        persistentVolumeClaim:
          claimName: log-pv-claim
      - name: dicom-pvc
        persistentVolumeClaim:
          claimName: dicom-pv-claim
      - name: log-jvm-pvc
        persistentVolumeClaim:
          claimName: log-jvm-pv-claim
#      imagePullSecrets:
#      - name: aliyun-sc-default

根据node名称调度

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: myweb
spec:
  replicas: 2
  template:
    metadata:
      labels:
        app: myweb
    spec:
      nodeSelector:
        type: backEndNode1
      containers:
      - name: myweb
        image: harbor/tomcat:8.5-jre8
        ports:
        - containerPort: 80

https://blog.csdn.net/u013201439/article/details/79436465