开课吧web全栈架构师第16期2020完结10部署ker自动化nginx cluster pm

部署课程目n掌握pm2部署NodeJS参考文 课程内主要解决问多核利 多进程共享////consthttp=constserver=http.createServer((request,response){Math.random()>0.5?aa():'2' o')if(!module.parent){console.log('appstartedatport}elsemodule.exports=}//constrequest=require('request');setInterval(()=>{request('',function(error,response,{console.log('body:',body);//PrinttheHTMLforthe},)//varcluster=varosrequire('os'获取CPU的数varnumCPUs=os.cpus().length;varprocess=require('process')varworkers=if(cluster.isMaster)//主进程分cluster.on('exit',(worker,code,signal)console.log('工作进程%d关闭(%s重启中...',cess.pid,signal||code);deleteworkers[cess.pid]worker=cluster.fork()workers[cess.pid]=workerconsole.log('numCPUs:',numCPUs)for(vari=0;i<numCPUs;i++){varworker=console.log('init...pid',cess.pid)workers[cess.pid]=worker;}}elsevarapp=require('./app');}当主进程被终止时，关闭所有工作process.on('SIGTERM',function{for(varpidinworkers){}scp(最原始pose.ymlroot@3:/root/source/#文scp-rmini-01 #文件git(实际工作中)deploy(debug)内建负载均衡（使用Nodecluster集群模块、子进程，可以参考的《深入浅出node.js》一书线程守护，keep0秒停机重载，升级的时候不需要停机Linux(stable&MacOSx(stable&Windows(stable).多平台支持 提供HTTPAPI配npminstallnpminstall-gpm2startapp.js--watch-i// 文件变i启动多少个实pm2stopallpm2listpm2startapp.js-imax#根据机器CPU核数，开启对应数目的配置-script:app.jsinstances:2watch:true NODE_ENV:pm2linkpm2link8hxvp4bfrftvwxnuis7ndy58fvuf7lTARO-pm2设置为开机启pm2pm2Nginx反向代理+前端打包安yumyuminstallaptaptinstall添加静态路#/etc/nginx/sites-server#/etc/nginx/sites-serverlistenlocation/{;root/root/source/taro-indexindex.html}}#验证Nginx配nginx-重新启动servicenginxnginx-s#/etc/nginx/sites-enable#taroserverserverlistenlocation/{;root/root/source/taro-node/dist;indexindex.htmlindex.htm;}location~\.(gif|jpg|png)$root/root/source/taro-}location/api;X-Real-X-Forwarded-$}}X-Real-IP用于记录代理信息的，每经过一级代理(匿名代理除外)，代理服务器都会把这次请求的来nginx-#nginx:theconfigurationfile/etc/nginx/nginx.confsyntaxisok#nginx:configurationfile/etc/nginx/nginx.conftestis#servicenginxnginx-s操作系统层面的虚拟化的进程独立于宿主和其它的的进程-容GO语言开特对比传统虚拟机特容虚拟启秒分钟硬盘使一般为一般为性接近原弱系统支持单机支持上千个容一般几十三个概仓构建一个Nginx服务1.拉取镜##拉 镜dockerpull#查dockerimages#启动镜mkdirecho odocker!!'>>#启# 里面放一个dockerrun-p80:80-v$PWD/www:/usr/share/nginx/html-d#查看进dockerdockerps-a查看全伪终端ff6容器的#-t选项让Docker分配一个伪终端（pseudo-tty）并绑定到容器的标准输入上i则让容器的标准输入保持打dockerexec-itff6#停dockerstopdockerrmdockerrmFROMFROMRUNecho o,Kaikeba!</h1>'>#定制镜dockerbuild-tmynginx#运d守护态运dockerrun-p80:80-d定制一个程序NodeJSnpminit-npminit-ynpmikoa-s//{"name":"version":"main":"app.js","scripts":{"test":"echo\"Error:notestspecified\"&&exit ":"author":"license":"ISC","description":"myappp","dependencies":{"koa":}}////constKoa=require('koa')constapp=newKoa()app.use(ctx=>{Math.random()>0.8?abc():''ctx.body=' oDocker'app.listen(3000,()=>{console.log('appstartedatFROMnode:10-alpine#移动当 下面的文件到 ADD. WORKDIR/app#RUNnpminstallEXPOSE3000#CMD["node",##定制镜dockerbuild-tmynode#运dockerrun-p3000:3000-dPm2-利用多核资##.dockerignore//process.yml-script:app.jsinstances:2watch:true NODE_ENV:##FROMkeymetrics/pm2:latest-alpineWORKDIR/usr/src/appADD.RUNnpmconfigsetregistrynpmiEXPOSE#pm2在docker中使用命令为pm2-CMD["pm2-runtime","start",&&##定制镜dockerbuild-tmypm2#运dockerrun-p3000:3000-dapp-app-container_name:app-pm2build:.#volumes: -.:/usr/src/app-强制重新构建并 -recreate强制重建容build强制编poseup-d- -recreate--version:'3.1'image:nginx:kaikeba-运pose运pose#poseup-version:'3.1'image:mongorestart:always-mongo-image:mongo-expressrestart:always-////constmongoose=1.连mongoose.connect("mongodb://mongo:27017/test",{useNewUrlParser:true});constconn=mongoose.connection;conn.on("error"console.error("连接数据库失败//constmongoose=require('mongoose');mongoose.connect('mongodb://mongo:27017/test',{useNewUrlParser:true});constCat=mongoose.model('Cat',{name:String});constkitty=newCat({name:'Zildjian'});kitty.save().then(()=>console.log('meow'));app.use(asyncctx=>{ctx.body=awaitCat.find()启动varhttp=varcreateHandler=require('-webhook-varhandler=createHandler({path:'/webhooks',secret:'myHashSecret'//上面的secret保持和设置的一functionrun_cmd(cmd,args,callback)varspawn=require('child_process').spawn;varchild=spawn(cmd,args);varresp=child.stdout.on('data',function(buffer){resp+=buffer.toString();});child.stdout.on('end',function(){callback(resp)});}http.createServer(function(req,{handler(req,res,function(err){res.statusCode=404res.end('nosuchlocation')handler.on('error',function{console.error('Error:',handler.on('*',function{console.log('Received*', run_cmd('sh',['./deploy-dev.sh'],function(text){handler.on('push',function{console.log('R