K8s yaml文件名词释义及yaml模板
apiVersion: v1 #指定api版本，此值必须在kubectl apiversion中
kind: Pod #指定创建资源的角色/类型
metadata: #资源的元数据/属性
name: web04-pod #资源的名字，在同一个namespace中必须唯一
labels: #设定资源的标签，详情请见http://blog.csdn.net/liyingke112/article/details/77482384
k8s-app: apache
version: v1
kubernetes.io/cluster-service: "true"
annotations: #自定义注解列表
- name: String #自定义注解名字
spec:#specification of the resource content 指定该资源的内容
restartPolicy: Always #表明该容器一直运行，默认k8s的策略，在此容器退出后，会立即创建一个相同的容器
nodeSelector: #节点选择，先给主机打标签kubectl label nodes kube-node1 zone=node1
zone: node1
containers:
- name: web04-pod #容器的名字
image: web:apache #容器使用的镜像地址
imagePullPolicy: Never #三个选择Always、Never、IfNotPresent，每次启动时检查和更新（从registery）images的策略，
# Always，每次都检查
# Never，每次都不检查（不管本地是否有）
# IfNotPresent，如果本地有就不检查，如果没有就拉取
command: ['sh'] #启动容器的运行命令，将覆盖容器中的Entrypoint,对应Dockefile中的ENTRYPOINT
args: ["$(str)"] #启动容器的命令参数，对应Dockerfile中CMD参数
env: #指定容器中的环境变量
- name: str #变量的名字
value: "/etc/run.sh" #变量的值
resources: #资源管理，请求请见http://blog.csdn.net/liyingke112/article/details/77452630
requests: #容器运行时，最低资源需求，也就是说最少需要多少资源容器才能正常运行
cpu: 0.1 #CPU资源（核数），两种方式，浮点数或者是整数+m，0.1=100m，最少值为0.001核（1m）
memory: 32Mi #内存使用量
limits: #资源限制
cpu: 0.5
memory: 32Mi
ports:
- containerPort: 80 #容器开发对外的端口
name: httpd #名称
protocol: TCP
livenessProbe: #pod内容器健康检查的设置，详情请见http://blog.csdn.net/liyingke112/article/details/77531584
httpGet: #通过httpget检查健康，返回200-399之间，则认为容器正常
path: / #URI地址
port: 80
#host: 127.0.0.1 #主机地址
scheme: HTTP
initialDelaySeconds: 180 #表明第一次检测在容器启动后多长时间后开始
timeoutSeconds: 5 #检测的超时时间
periodSeconds: 15 #检查间隔时间
#也可以用这种方法
#exec: 执行命令的方法进行监测，如果其退出码不为0，则认为容器正常
# command:
# - cat
# - /tmp/health
#也可以用这种方法
#tcpSocket: //通过tcpSocket检查健康
# port: number
lifecycle: #生命周期管理
postStart: #容器运行之前运行的任务
exec:
command:
- 'sh'
- 'yum upgrade -y'
preStop: #容器关闭之前运行的任务
exec:
command: ['service httpd stop']
volumeMounts: #详情请见http://blog.csdn.net/liyingke112/article/details/76577520
- name: volume #挂载设备的名字，与volumes[*].name 需要对应
mountPath: /data #挂载到容器的某个路径下
readOnly: True
volumes: #定义一组挂载设备
- name: volume #定义一个挂载设备的名字
#meptyDir: {}
hostPath:
path: /opt #挂载设备类型为hostPath，路径为宿主机下的/opt,这里设备类型支持很多种
nginx.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx
spec:
replicas: 1
selector:
matchLabels:
name: nginx
template:
metadata:
labels:
name: nginx
spec:
containers:
- name: nginx
image: harbor.xxx.cn/official_hub/nginx:1.13-alpine
imagePullPolicy: IfNotPresent
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: nginx-service-nodeport
spec:
ports:
- port: 80
targetPort: 80
protocol: TCP
type: NodePort
selector:
name: nginx
mrdoc
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: mrdoc
name: mrdoc
namespace: mrdoc
spec:
replicas: 1 #k8s中要启动的pod个数，可以任意修改
selector:
matchLabels:
app: mrdoc
template:
metadata:
labels:
app: mrdoc
spec:
containers:
- image: jrt101/mrdoc:latest
ports:
- containerPort: 10086
name: mrdoc
---
apiVersion: v1
kind: Service
metadata:
labels:
app: mrdoc
name: mrdoc
namespace: mrdoc
spec:
ports:
- port: 10086
name: mrdoc
protocol: TCP
# targetPort: 80
nodePort: 32111
selector:
app: mrdoc
type: NodePort
加挂载
[root@jrt ~]# cat mrdoc.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: mrdoc
name: mrdoc
namespace: mrdoc
spec:
replicas: 1 #k8s中要启动的pod个数，可以任意修改
selector:
matchLabels:
app: mrdoc
template:
metadata:
labels:
app: mrdoc
spec:
volumes:
- name: mrdoc
hostPath:
path: /root/foot_base.html
type: File
containers:
- image: jrt101/mrdoc:latest
ports:
- containerPort: 10086
name: mrdoc
volumeMounts:
- mountPath: /app/Mrdoc/template/app_doc/foot_base.html
name: mrdoc
#tolerations:
#- key: "node-role.kubernetes.io/master"
# operator: "Exists"
# effect: "NoSchedule"
---
apiVersion: v1
kind: Service
metadata:
labels:
app: mrdoc
name: mrdoc
namespace: mrdoc
spec:
ports:
- port: 10086
name: mrdoc
protocol: TCP
# targetPort: 80
nodePort: 32111
selector:
app: mrdoc
type: NodePort
jenkins
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: jenkins
namespace: jenkins
spec:
serviceName: jenkins
replicas: 1
selector:
matchLabels:
app: jenkins
template:
metadata:
labels:
app: jenkins
spec:
containers:
- name: jenkins
image: jenkins4eval/jenkins
imagePullPolicy: IfNotPresent
securityContext:
runAsUser: 0
volumeMounts:
- mountPath: /var/jenkins_home
name: jenkins-volume
- mountPath: /var/run/docker.sock
name: jenkins-sock
- mountPath: /bin/docker
name: jenkins-docker
env:
- name: TZ
value: Asia/Shanghai
ports:
- containerPort: 8080
volumes:
- name: jenkins-volume
hostPath:
path: /data/wangzhichao/jenkins
type: Directory
- name: jenkins-sock
hostPath:
path: /run/docker.sock
type: Socket
- name: jenkins-docker
hostPath:
path: /bin/docker
type: File
---
apiVersion: v1
kind: Service
metadata:
namespace: jenkins
name: jenkins
spec:
type: NodePort
ports:
- port: 8080
targetPort: 8080
nodePort: 32247
selector:
app: jenkins