一、介绍

• pm2是一个进程管理工具,可以用它来管理node进程，并查看node进程的状态，当然也支持性能监控，进程守护，负载均衡等功能，在前端和nodejs的世界中用的很多。

二、安装pm2

全局安装pm2，执行命令：

sudo npm install pm2 -g

-g全局安装

这里要加sudo,不然会报错，没有权限。

三、报错处理

3.1  npm ERR! code ECONNRESET

1、报错信息：

npm ERR! code ECONNRESET
npm ERR! syscall read
npm ERR! errno ECONNRESET
npm ERR! network request to https://registry.npmjs.org/dayjs failed, reason: read ECONNRESET
npm ERR! network This is a problem related to network connectivity.
npm ERR! network In most cases you are behind a proxy or have bad network settings.
npm ERR! network
npm ERR! network If you are behind a proxy, please make sure that the
npm ERR! network 'proxy' config is set properly.  See: 'npm help config'

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/zhaohui/.npm/_logs/2023-04-13T08_55_41_290Z-debug-0.log

2、报错原因：

执行命令安装，

npm install pm2 -g

 -g，是全局安装，这样权限不够，需要加sudo

解决办法：

sudo npm install pm2 -g

3.2  npm WARN deprecated uuid@3.4.0: Please upgrade  to version 7 or higher.

报错信息：

npm WARN deprecated uuid@3.4.0: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.

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原因就是uuid的版本太低了。

解决办法：

升级uuid，指定要升级到的uuid版本

sudo npm install uuid@7.0.3 -g