Kubernetes集群实战 项目4拓展训练 .docx

任务一拓展训练

编写探测脚本

apiVersion:v1

kind:Pod

metadata:

name:httpget-pod

namespace:default

spec:

containers:

-name:httpget-container

image:nginx:1.8.1

imagePullPolicy:IfNotPresent

ports:

-name:http

containerPort:80

command:[/bin/sh,-c,sleep30;rm-rf/index.html]

livenessProbe:

httpGet:

port:http

path:/index.html

initialDelaySeconds:1

periodSeconds:3

timeoutSeconds:10

运行后查看pod重启状态

[root@master~]#kubectlgetpod

NAMEREADYSTATUSRESTARTSAGE

httpget-pod1/1Running14m

任务二拓展训练

编写可读性探测器脚本

apiVersion:apps/v1

kind:Deployment

metadata:

name:readiness-deployment

spec:

template:

metadata:

labels:

app:nginx

spec:

containers:

-name:nginx

image:nginx:1.8.1

ports:

-name:http

containerPort:80

command:[/bin/sh,-c,sleep30;rm-rf/index.html]

readinessProbe:

httpGet:

#这里的http指定是定义容器时ports的name，即探测80端口

port:http

#使用http方式访问根目录下是否存在index.html

path:/index.html

initialDelaySeconds:1

periodSeconds:3

selector:

matchLabels:

app:nginx

replicas:3

查看运行结果

[root@masteryaml]#kubectlgetpod

NAMEREADYSTATUSRESTARTSAGE

readiness-deployment-7664485764-jdcc50/1Running154s

readiness-deployment-7664485764-jg9dz0/1Running154s

readiness-deployment-7664485764-sx5lb0/1Running154s

通过观察发现容器一直没有ready状态，说明readiness的初始值为false，和liveness探测正好相反。