linux下安装node环境以及配置软连接、pm2管理node进程

安装

在官方网站下载linux系统的安装包，然后上传到服务器进行解压安装

• 执行解压命令：tar -xvf node-v6.10.0-linux-x64.tar.xz
• 重命名： mv node-v6.10.0-linux-x64 nodejs
• 确认一下nodejs下bin目录是否有node 和npm文件，如果有执行软连接，如果没有重新下载执行上边步骤；

通过源码编译，在官方网站下载Source code文件，

• tar xvf node-v0.10.28.tar.gz
• cd node-v0.10.28
• ./configure
• make
• make install
• cp /usr/local/bin/node /usr/sbin/ 路径自己选择
• 查看当前安装的Node的版本 ： node -v

建立软连接,配置全局环境变量

• ln -s /usr/local/nodejs/bin/npm /usr/local/bin/
• ln -s /usr/local/nodejs/bin/node /usr/local/bin/

检查是否配置好

• node -v
• npm -v

使用pm2进行node进程管理

• 安装：npm i pm2 -g
• 运行：pm2 start app.js
• 停止所有进程：pm2 stop all
• 重启所有进程： pm2 restart all

pm2命令

# General 
    $ npm install pm2 -g            # Install PM2 
    $ pm2 start app.js              # Start, Daemonize and auto-restart application (Node) 
    $ pm2 start app.py              # Start, Daemonize and auto-restart application (Python) 
    $ pm2 start npm -- start        # Start, Daemonize and auto-restart Node application 

# Cluster Mode (Node.js only) 
    $ pm2 start app.js -i 4         # Start 4 instances of application in cluster mode 
                                    # it will load balance network queries to each app 
    $ pm2 reload all                # Zero Second Downtime Reload 
    $ pm2 scale [app-name] 10       # Scale Cluster app to 10 process 

# Process Monitoring 
    $ pm2 list                      # List all processes started with PM2 
    $ pm2 list --sort=       # Sort all processes started with PM2 
    $ pm2 monit                     # Display memory and cpu usage of each app 
    $ pm2 show [app-name]           # Show all information about application 

# Log management 
    $ pm2 logs                      # Display logs of all apps 
    $ pm2 logs [app-name]           # Display logs for a specific app 
    $ pm2 logs --json               # Logs in JSON format 
    $ pm2 flush
    $ pm2 reloadLogs

# Process State Management 
    $ pm2 start app.js --name="api" # Start application and name it "api" 
    $ pm2 start app.js -- -a 34     # Start app and pass option "-a 34" as argument 
    $ pm2 start app.js --watch      # Restart application on file change 
    $ pm2 start script.sh           # Start bash script 
    $ pm2 start app.json            # Start all applications declared in app.json 
    $ pm2 reset [app-name]          # Reset all counters 
    $ pm2 stop all                  # Stop all apps 
    $ pm2 stop 0                    # Stop process with id 0 
    $ pm2 restart all               # Restart all apps 
    $ pm2 gracefulReload all        # Gracefully reload all apps in cluster mode 
    $ pm2 delete all                # Kill and delete all apps 
    $ pm2 delete 0                  # Delete app with id 0 

# Startup/Boot management 
    $ pm2 startup                   # Detect init system, generate and configure pm2 boot on startup 
    $ pm2 save                      # Save current process list 
    $ pm2 resurrect                 # Restore previously saved processes 
    $ pm2 unstartup                 # Disable and remove startup system 

    $ pm2 update                    # Save processes, kill PM2 and restore processes 
    $ pm2 generate                  # Generate a sample json configuration file 

# Deployment 
    $ pm2 deploy app.json prod setup    # Setup "prod" remote server 
    $ pm2 deploy app.json prod          # Update "prod" remote server 
    $ pm2 deploy app.json prod revert 2 # Revert "prod" remote server by 2 

# Module system 
    $ pm2 module:generate [name]    # Generate sample module with name [name] 
    $ pm2 install pm2-logrotate     # Install module (here a log rotation system) 
    $ pm2 uninstall pm2-logrotate   # Uninstall module 
    $ pm2 publish                   # Increment version, git push and npm publish