为node 添加labels disktype=ssd
[root@k8s-master /]# kubectl label node k8s-node01 disktype=ssd
node/k8s-node01 labeled
[root@k8s-master /]# kubectl get node --show-labels
NAME STATUS ROLES AGE VERSION LABELS
k8s-master Ready master 22d v1.15.4 beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=k8s-master,kubernetes.io/os=linux,node-role.kubernetes.io/master=
k8s-node01 Ready <none> 22d v1.15.4 beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,disktype=ssd,kubernetes.io/arch=amd64,kubernetes.io/hostname=k8s-node01,kubernetes.io/os=linux
k8s-node02 Ready <none> 22d v1.15.4 beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=k8s-node02,kubernetes.io/os=linux
加入label之前
[root@k8s-master /]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES k8s-node02 <none> <none>
demo-wpp-deployment-7cf9dd6ff6-pfc55 1/1 Running 0 14m 10.244.1.19 k8s-node02 <none> <none>
demo-wpp-deployment-7cf9dd6ff6-qg25v 1/1 Running 0 14m 10.244.2.18 k8s-node01 <none> <none>
加入label
---
apiVersion: v1
kind: Service
metadata:
name: demo-wpp-service
spec:
type: NodePort
selector:
app: demo-wpp
ports:
- port: 80
targetPort: 8088
nodePort: 30089
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: demo-wpp-deployment
spec:
replicas: 2
template:
metadata:
labels:
app: demo-wpp
spec:
nodeSelector:
disktype: ssd
containers:
- name: demo-wpp
image: registry.cn-shanghai.aliyuncs.com/glodoncornerstone/demo_wpp
imagePullPolicy: IfNotPresent
args: [
"--mysql.host=$(mysql_host)"
]
env:
- name: mysql_host
valueFrom:
configMapKeyRef:
name: demo-wpp-configmap
key: mysql_host
ports:
- containerPort: 8088
---
apiVersion: v1
kind: ConfigMap
metadata:
name: demo-wpp-configmap
data:
mysql_host: "222222"
加入label之后
[root@k8s-master /]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES k8s-node02 <none> <none>
demo-wpp-deployment-f88554f8b-h2hlm 1/1 Running 0 8s 10.244.2.19 k8s-node01 <none> <none>
demo-wpp-deployment-f88554f8b-tzb47 1/1 Running 0 8s 10.244.2.20 k8s-node01 <none> <none>
现在已全部调度至node1 节点