LAB-08：Pod 扩容
LAB 需求
扩容名字为 loadbalancer 的 deployment 的副本数为 6
LAB 预配
# 创建一个名为 loadbalancer 的 deployment
user1@k8s-master:~/cka-2022-05-01/8$ cat loadbalancer.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: loadbalancer
spec:
replicas: 1
selector:
matchLabels:
app: loadbalancer
template:
metadata:
labels:
app: loadbalancer
spec:
containers:
- name: nginx
image: nginx:1.18.0
imagePullPolicy: IfNotPresent
# 部署 loadbalancer 应用
user1@k8s-master:~/cka-2022-05-01/8$ kubectl apply -f loadbalancer.yaml
deployment.apps/loadbalancer created
# 查看 webserver 的 pod 数量
user1@k8s-master:~$ kubectl get pod loadbalancer-85767b4556-lddwx
NAME READY STATUS RESTARTS AGE
loadbalancer-85767b4556-lddwx 1/1 Running 0 23s
LAB 答案
# 切换 content
$ kubectl config use-context k8s
# 扩容副本为 6
$ kubectl scale deployment loadbalancer --replicas=6
LAB 验证
# 查看 pod 副本
user1@k8s-master:~$ kubectl get pod | grep loadbalancer-85767b4556
loadbalancer-85767b4556-8k5wg 1/1 Running 0 30s
loadbalancer-85767b4556-fkvkq 1/1 Running 0 30s
loadbalancer-85767b4556-lddwx 1/1 Running 0 2m49s
loadbalancer-85767b4556-v2kpx 1/1 Running 0 30s
loadbalancer-85767b4556-v8wg8 1/1 Running 0 30s
loadbalancer-85767b4556-xvkqd 1/1 Running 0 30s
参考资料
- https://kubernetes.io/zh/docs/concepts/workloads/controllers/deployment/
