Question

我在使用cron标签重新启动我的实例时遇到了麻烦

#!/usr/bin/node
*15 * * * * /usr/bin/node /usr/bin/pm2 restart 4

但我的问题是我有两个pm2守护进程。我想要的是/opt.pm2所以每次我想使用pm2我都需要使用这个命令

export PM2_HOME="/opt/.pm2"

我需要知道如何在我的crontab中传递这个env变量来重启实例4因为在/ usr / bin / pm2我没有让我的应用程序运行吗？

但是我收到了错误

From root@ip120.ip-46-105-248.eu  Sun Nov 12 11:23:01 2017
Return-Path: <root@ip120.ip-46-105-248.eu>
X-Original-To: root
Delivered-To: root@ip120.ip-46-105-248.eu
Received: by ip120.ip-46-105-248.eu (Postfix, from userid 0)
    id E84CA100921; Sun, 12 Nov 2017 11:23:01 +0000 (WET)
From: "(Cron Daemon)" <root@ip120.ip-46-105-248.eu>
To: root@ip120.ip-46-105-248.eu
Subject: Cron <root@ip120> /usr/bin/node /usr/bin/pm2 restart 4
Content-Type: text/plain; charset=UTF-8
Auto-Submitted: auto-generated
Precedence: bulk
X-Cron-Env: <XDG_SESSION_ID=4300>
X-Cron-Env: <XDG_RUNTIME_DIR=/run/user/0>
X-Cron-Env: <LANG=en_US.UTF-8>
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/root>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=root>
X-Cron-Env: <USER=root>
Message-Id: <20171112112301.E84CA100921@ip120.ip-46-105-248.eu>
Date: Sun, 12 Nov 2017 11:23:01 +0000 (WET)

Use --update-env to update environment variables
[PM2] Applying action restartProcessId on app [4](ids: 4)
[PM2][ERROR] Process 4 not found
┌──────────┬────┬──────┬─────┬────────┬─────────┬────────┬─────┬─────┬──────────┐
│ App name │ id │ mode │ pid │ status │ restart │ uptime │ cpu │ mem │ watching │
└──────────┴────┴──────┴─────┴────────┴─────────┴────────┴─────┴─────┴──────────┘
 Module activated
┌───────────────┬─────────┬────────────┬────────┬─────────┬─────┬─────────────┐
│ Module        │ version │ target PID │ status │ restart │ cpu │ memory      │
├───────────────┼─────────┼────────────┼────────┼─────────┼─────┼─────────────┤
│ pm2-logrotate │ 2.2.0   │ N/A        │ online │ 0       │ 0%  │ 91.223 MB   │
└───────────────┴─────────┴────────────┴────────┴─────────┴─────┴─────────────┘
 Use `pm2 show <id|name>` to get more details about an app

Answer 1

如果除环境变量之外的所有其他内容都相同，则可以将crontab命令设置为env PM2_HOME="/opt/.pm2" /usr/bin/node /usr/bin/pm2 restart 4。或/usr/bin/env代替env。

如果您没有以这种方式找到成功，您可以编写一个小的shell脚本，只导出PM2_HOME值并重新启动pm2。然后把这个shell脚本作为cron命令。

Answer 2

做什么@sapht告诉我，我得到了

crontab -l

#!/usr/bin/node
*/45 * * * *  env PM2_HOME="/opt/.pm2" /usr/bin/node /usr/bin/pm2 restart 4

我得到了这个输出

From root@ip120.ip-46-105-248.eu  Sun Nov 12 12:15:02 2017
Return-Path: <root@ip120.ip-46-105-248.eu>
X-Original-To: root
Delivered-To: root@ip120.ip-46-105-248.eu
Received: by ip120.ip-46-105-248.eu (Postfix, from userid 0)
        id 7FC6010092C; Sun, 12 Nov 2017 12:15:02 +0000 (WET)
From: "(Cron Daemon)" <root@ip120.ip-46-105-248.eu>
To: root@ip120.ip-46-105-248.eu
Subject: Cron <root@ip120> env PM2_HOME="/opt/.pm2" /usr/bin/node /usr/bin/pm2 restart 4
Content-Type: text/plain; charset=UTF-8
Auto-Submitted: auto-generated
Precedence: bulk
X-Cron-Env: <XDG_SESSION_ID=4304>
X-Cron-Env: <XDG_RUNTIME_DIR=/run/user/0>
X-Cron-Env: <LANG=en_US.UTF-8>
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/root>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=root>
X-Cron-Env: <USER=root>
Message-Id: <20171112121502.7FC6010092C@ip120.ip-46-105-248.eu>
Date: Sun, 12 Nov 2017 12:15:02 +0000 (WET)

Use --update-env to update environment variables
[PM2] Applying action restartProcessId on app [4](ids: 4)
[PM2] [wscontroller-gps-service](4) ✓
┌──────────────────────────┬────┬─────────┬───────┬────────┬─────────┬────────┬─────┬───────────┬──────────┐
│ App name                 │ id │ mode    │ pid   │ status │ restart │ uptime │ cpu │ mem       │ watching │
├──────────────────────────┼────┼─────────┼───────┼────────┼─────────┼────────┼─────┼───────────┼──────────┤
│ wscontroller-api         │ 2  │ cluster │ 25521 │ online │ 0       │ 47m    │ 0%  │ 47.6 MB   │ disabled │
│ wscontroller-gps-service │ 4  │ fork    │ 2974  │ online │ 5       │ 0s     │ 99% │ 14.0 MB   │ disabled │
│ wscontroller-proxy       │ 5  │ cluster │ 25549 │ online │ 0       │ 47m    │ 0%  │ 45.5 MB   │ disabled │
│ wscontroller-service     │ 3  │ cluster │ 29681 │ online │ 1       │ 28m    │ 31% │ 83.6 MB   │ disabled │
│ wscontroller-ui-server   │ 1  │ cluster │ 25515 │ online │ 0       │ 47m    │ 0%  │ 35.7 MB   │ disabled │
└──────────────────────────┴────┴─────────┴───────┴────────┴─────────┴────────┴─────┴───────────┴──────────┘
 Module activated
┌───────────────┬─────────┬────────────┬────────┬─────────┬─────┬─────────────┐
│ Module        │ version │ target PID │ status │ restart │ cpu │ memory      │
├───────────────┼─────────┼────────────┼────────┼─────────┼─────┼─────────────┤
│ pm2-logrotate │ 2.2.0   │ N/A        │ online │ 0       │ 0%  │ 36.527 MB   │
└───────────────┴─────────┴────────────┴────────┴─────────┴─────┴─────────────┘
 Use `pm2 show <id|name>` to get more details about an app

创建cron以重启pm2实例失败

2 个答案: