nginx yaml文件说明

---

#定义nginx命名空间

apiVersion: v1

kind: Namespace

metadata:

name: k8s-nginx #自定义的命名空间

---

#定义nginx service

apiVersion: v1

kind: Service

metadata:

name: k8s-nginx

namespace: k8s-nginx

labels:

app: k8s-nginx

spec:

type: NodePort

ports:

- port: 80 #分配集群ip的端口

targetPort: 80 #分配pod端口

nodePort: 10280 #node节点端口

protocol: TCP

clusterIP: 169.169.249.80 #分配集群ip

selector:

app: k8s-nginx

---

#创建 deployment

apiVersion: apps/v1

kind: Deployment

metadata:

name: nginx-deploy

namespace: k8s-nginx

labels:

app: k8s-nginx

spec:

replicas: 2 #生成复本数量为2

selector:

matchLabels:

app: k8s-nginx

template:

metadata:

labels:

app: k8s-nginx

annotations:

app: nginx-clouster

spec:

containers:

- name: nginx

image: docker.io/nginx

imagePullPolicy: IfNotPresent

resources:

limits:

cpu: 300m

memory: 3000Mi

requests:

cpu: 100m

memory: 100Mi

ports:

- containerPort: 80

如果要修改nginx.yaml文件,二种方式

第一种:

直接修改 nginx.yaml并保存

kubectl apply -f nginx.yaml

第二种:

先查看要修改的资源对象

#kubectl get pod,svc,deploy -n k8s-nginx

NAME READY STATUS RESTARTS AGE

pod/nginx-deploy-5d677c4495-5wmf2 1/1 Running 0 26m

pod/nginx-deploy-5d677c4495-lzv6g 1/1 Running 0 37m

pod/nginx-deploy-5d677c4495-rpfgg 1/1 Running 0 37m

NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE

service/k8s-nginx NodePort 169.169.249.80 80:10280/TCP 42m

NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE

deployment.extensions/nginx-deploy 3 3 3 3 39m

然后再执行以下命令

kubectl edit deployment.extensions/nginx-deploy -n k8s-nginx直接编辑,完成后保存,保存后要查看是否出错,如果没有出错会立即生效,如果有出错,下面会出现error字样,并在/tmp下生成一个临时文件,此时原文件并没有修改,不会影响线上业务