春风十里不如你 —— Taozi - go 2023-06-07T22:56:55+08:00 Typecho https://xiongan.host/index.php/feed/atom/tag/go/ <![CDATA[【k8s】将Go服务上传到k8s]]> https://xiongan.host/index.php/archives/215/ 2023-06-07T22:56:55+08:00 2023-06-07T22:56:55+08:00 admin https://www.xiongan.host 将Go服务发布到k8s集群

首先安装go环境

下载go的tar.gz包,可以前往阿里云镜像站go页面下载相应版本地址:https://mirrors.aliyun.com/golang/?spm=a2c6h.13651104.mirror-free-trial.1.75b41e57BOxyw5

然后下载到虚拟机中,并且解压到/usr/local/src中

//解压缩go包
[root@master ~]# tar -zxf go1.18.10.linux-amd64.tar.gz -C /usr/local/src
//添加环境变量
[root@master src]# vim /etc/profile
//添加如下:
export GOROOT=/usr/local/src
export PATH=$PATH:$GOROOT/bin
//保存退出后source一下
source /etc/profile
//查看是否成功
go version

创建源码文件

[root@master ~]# mkdir 0607tz
[root@master ~]# cd 0607tz/
[root@master 0607tz]# vim main.go
//编辑到文件中
package main

import (
        "net/http"

        "github.com/gin-gonic/gin"
)

func statusOKHandler(c *gin.Context) {
        c.JSON(http.StatusOK, gin.H{"status": "success~welcome to study"})
}

func versionHandler(c *gin.Context) {
        c.JSON(http.StatusOK, gin.H{"version": "v1.1版本"})
}

func main() {
        router := gin.New()
        router.Use(gin.Recovery())
        router.GET("/", statusOKHandler)
        router.GET("/version", versionHandler)
        router.Run(":8080")
}

Go mod初始化项目

初始化项目

[root@master 0607tz]# go mod init 0607tz
go: creating new go.mod: module 0607tz
go: to add module requirements and sums:
        go mod tidy
//成功初始化
//设置代理
[root@master 0607tz]# go env -w GOPROXY=https://goproxy.cn,direct
[root@master 0607tz]# go mod tidy
//构建源码
[root@master 0607tz]# CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o k8s-demo main.go

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创建镜像

编写dockerfile文件

[root@master 0607tz]# vim Dockerfile
FROM alpine
ADD k8s-demo /data/app/
WORKDIR /data/app/
CMD ["/bin/sh","-c","./k8s-demo"]

构建镜像

[root@master 0607tz]# docker build -t taozheng/k8sdemo:v1 .

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打包镜像,传到k8s工作节点

[root@master 0607tz]# docker save -o k8sdemo.tar.gz taozheng/k8sdemo:v1 
[root@master 0607tz]# scp k8sdemo.tar.gz node:/root/
k8sdemo.tar.gz                                100%   16MB  68.0MB/s   00:00
//在node节点解压镜像

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创建deployment的yaml文件

[root@master 0607tz]# vim k8s.yaml
//k8s.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: k8s-demo
  namespace: default
  labels:
    app: k8s-demo
    cy: taozheng
spec:
  selector:
    matchLabels:
      app: k8s-demo
  replicas: 4
  template:
    metadata:
      labels:
        app: k8s-demo
    spec:
      containers:
      - image: taozheng/k8sdemo:v1
        imagePullPolicy: IfNotPresent
        name: k8s-demo
        ports:
        - containerPort: 8080
          protocol: TCP
        resources:
          limits:
            cpu: 100m
            memory: 100Mi
          requests:
            cpu: 50m
            memory: 50Mi
        livenessProbe:
          tcpSocket:
            port: 8080
          initialDelaySeconds: 10
          timeoutSeconds: 3
        readinessProbe:
          httpGet:
            path: /
            port: 8080
          initialDelaySeconds: 10
          timeoutSeconds: 2

创建go的服务

[root@master 0607tz]# vim gosvc.yaml
kind: Service
apiVersion: v1
metadata:
  name: k8s-demo-svc
  namespace: default
  labels:
    app: k8s-demo
    cy: taozheng
spec:
  ports:
    - name: api
      port: 8080
      protocol: TCP
      targetPort: 8080
  selector:
    app: k8s-demo

k8s部署

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查看pod和服务信息

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修改svc的type类型变成nodePort

[root@master 0607tz]# kubectl edit svc k8s-demo-svc

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保存后再次查看,已经修改成功

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查看svc标签

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浏览器测试访问:

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