node及pm2环境安装

一、node安装

软件地址：https://nodejs.org/en/download/

#1、下载软件包
[ ~]# mkdir /app
[ ~]# cd /app/
[ app]# wget https://nodejs.org/dist/v12.13.1/node-v12.13.1-linux-x64.tar.xz
[ app]# ll
total 13740
-rw-r--r-- 1 root root 14067172 Nov 19 16:39 node-v12.13.1-linux-x64.tar.xz

#2.解压缩
[ app]# tar xf node-v12.13.1-linux-x64.tar.xz -C /usr/local/
[ app]# cd /usr/local/
[ local]# ls
bin  etc  games  include  lib  lib64  libexec  node-v12.13.1-linux-x64  sbin  share  src
[ local]# mv node-v12.13.1-linux-x64/ node
[ local]# ls
bin  etc  games  include  lib  lib64  libexec  node  sbin  share  src

#3、配置环境变量
[ local]# vim /etc/profile
export PATH=/usr/local/node/bin:$PATH
[ local]# source /etc/profile

#4、查看是否安装成功
[ local]# node -v
v12.13.1

二、pm2安装及使用

2.1、简介

1）PM2是node进程管理工具，可以利用它来简化很多node应用管理的繁琐任务，如性能监控、自动重启、负载均衡等，而且使用非常简单。

2）PM2的运行需要Node 环境和Npm的支持

2.2、安装

[ local]# npm install -g pm2
/usr/local/node/bin/pm2 -> /usr/local/node/lib/node_modules/pm2/bin/pm2
/usr/local/node/bin/pm2-dev -> /usr/local/node/lib/node_modules/pm2/bin/pm2-dev
/usr/local/node/bin/pm2-docker -> /usr/local/node/lib/node_modules/pm2/bin/pm2-docker
/usr/local/node/bin/pm2-runtime -> /usr/local/node/lib/node_modules/pm2/bin/pm2-runtime
npm WARN optional SKIPPING OPTIONAL DEPENDENCY:  (node_modules/pm2/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for : wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})

+ 
added 206 packages from 202 contributors in 48.781s

#如果存在网络问题，可以参考如下文章
https://cnodejs.org/topic/4f9904f9407edba21468f31e

2.3、常用命令