之前陈沩亮博客有分享过CentOS 6 安装和配置Monit的教程 ▼
如何设置monit.conf文件？Monit配置文件示例说明
如何设置monit.conf文件？Monit配置文件示例说明本文是 LINUX 系统的 MONIT监控程序的配置文件示例说明，你只需修改域名、“xxx”、pidfile的路经，即可立即套用。## ## 陈沩亮博客示例mo……
CentOS 6如何使用Monit监控？Linux安装卸载Monit教程
CentOS 6如何使用monit监控？Linux安装卸载monit教程monit监控程序是Linux操作系统的开源监控工具，它可以帮助您在使用Web浏览器来监视系统进程，当程序或服务失效宕机时，monit可以让它……
但是，在CentOS 7 配置Monit监控程序，和 CentOS 6 有些区别，是不完全一样的。
CentOS 7系统VestaCP面板如何安装Monit监控程序？
本教程重点介绍：如何在CentOS 7服务器上运行的VestaCP面板中安装Monit监控程序？ CentOS 7系统VestaCP面板，Monit配置如何设置？什么是Monit？Monit是一个用于管理和监控Uni……
如果你的Linux主机使用CentOS 7系统，在Vesta CP面板安装了 Monit 后，可以跟着本教程进行配置Monit监控程序。
Monit监控进程的服务
以下是Monit监控进程的服务配置内容（删除掉较少用的部分监控服务）：
Monit监控配置
CentOS 6 & 7 的 Monit配置文件名称是不同的：
用 SFTP 软件进入你的Linux服务器后，编辑Monit配置文件 ▼
/etc/monitrc
将以下的配置内容，添加到这个 “monitrc” 文件中 ▼
##
## 陈沩亮博客示例monit配置文件说明：
## 1. 域名以 www.etufo.org 为例。
## 2. 后面带xxx的均是举例用的名字，需要根据自己的需要修改。
##
################################################## #############################
## Monit control file
################################################## #############################
#
# 检查周期，默认为2分钟，对于网站来说有点长，可以根据需要自行调节，这改成30秒。
set daemon 30
include /etc/monit.d/*
# 日志文件
set logfile /var/log/monit.log
#
# 邮件通知服务器
#
#set mailserver mail.example.com
set mailserver localhost with timeout 30 seconds
#
# 通知邮件的格式设置，下面是默认格式供参考
#
## Monit by default uses the following alert mail format:
##
## --8<--
## From: [email protected]$HOST # sender
## Subject: monit alert -- $EVENT $SERVICE # subject
##
## $EVENT Service $SERVICE #
## #
## Date: $DATE #
## Action: $ACTION #
## Host: $HOST # body
## Description: $DESCRIPTION #
## #
## Your faithful employee, #
## monit #
## --8<--
##
## You can override the alert message format or its parts such as subject
## or sender using the MAIL-FORMAT statement. Macros such as $DATE, etc.
## are expanded on runtime. For example to override the sender:
#
# 简单的，这只改了一下发送人，有需要可以自己修改其它内容。
set mail-format { from: [email protected] }
# 设置邮件通知接收者。建议发到gmail，方便邮件过滤。
set alert [email protected]
set httpd port 2812 and #设置http监控页面的端口
use address www.etufo.org # http监控页面的IP或域名
##allow localhost # 允许本地访问
##allow 203.82.90.239 # 允许指定IP访问
allow user:password # 访问用户名密码
################################################## #############################
## Services
################################################## #############################
#
# 系统整体运行状况监控，默认的就可以，可以自己去微调
#
# 系统名称，可以是IP或域名
#check system www.etufo.org
# if loadavg (1min) > 4 then alert
# if loadavg (5min) > 2 then alert
# if memory usage > 75% then alert
# if cpu usage (user) > 70% then alert
# if cpu usage (system) > 30% then alert
# if cpu usage (wait) > 20% then alert
# 可选的ssl端口的监控，如果有的话
# if failed port 443 type tcpssl protocol http
# with timeout 15 seconds
# then restart
# 监控mariadb
check process mysql with pidfile /var/run/mariadb/mariadb.pid
start program = "/usr/bin/systemctl start mariadb"
stop program = "/usr/bin/systemctl stop mariadb"
if failed host 127.0.0.1 port 3306 for 2 cycles then restart
if 2 restarts within 4 cycles then timeout
# 监控httpd
check process httpd with pidfile /var/run/httpd/httpd.pid
start program = "/usr/bin/systemctl start httpd"
stop program = "/usr/bin/systemctl stop httpd"
# if children > 120 for 2 cycles then restart
# if failed host localhost port 8080 protocol http for 2 cycles then restart
# if 4 restarts within 10 cycles then timeout
# 监控nginx
check process nginx with pidfile /var/run/nginx.pid
start program = "/usr/bin/systemctl start nginx"
stop program = "/usr/bin/systemctl stop nginx"
# if failed host localhost port 443 protocol http for 2 cycles then restart
# if 4 restarts within 10 cycles then timeout
# 监控sshd
check process sshd with pidfile /var/run/sshd.pid
start program = "/usr/bin/systemctl start sshd"
stop program = "/usr/bin/systemctl stop sshd"
if failed host localhost port 22 protocol ssh for 2 cycles then restart
if 4 restarts within 10 cycles then timeout
# 监控vesta-nginx
check process vesta-nginx with pidfile /var/run/vesta-nginx.pid
start program = "/usr/bin/systemctl start vesta"
stop program = "/usr/bin/systemctl stop vesta"
if failed host localhost port 8083 protocol https for 2 cycles then restart
if 4 restarts within 10 cycles then timeout
# 监控vesta-php
check process vesta-php with pidfile /var/run/vesta-php.pid
start program = "/usr/bin/systemctl start vesta"
stop program = "/usr/bin/systemctl stop vesta"
if failed host localhost port 8083 protocol https for 2 cycles then restart
if 4 restarts within 10 cycles then timeout
# 监控vsftpd
check process vsftpd with match vsftpd
start program = "/usr/bin/systemctl start vsftpd"
stop program = "/usr/bin/systemctl stop vsftpd"
if failed host localhost port 21 protocol ftp for 2 cycles then restart
if 4 restarts within 10 cycles then timeout
#监控crond
check process crond with pidfile /var/run/crond.pid
start program = "/usr/bin/systemctl start crond"
stop program = "/usr/bin/systemctl stop crond"
if 5 restarts within 5 cycles then timeout
#监控dovecot
check process dovecot with pidfile /var/run/dovecot/master.pid
start program = "/usr/bin/systemctl start dovecot"
stop program = "/usr/bin/systemctl stop dovecot"
if failed host localhost port 143 protocol imap for 2 cycles then restart
if 4 restarts within 10 cycles then timeout
#监控exim
check process exim with pidfile /var/run/exim.pid
start program "/usr/bin/systemctl start exim"
stop program "/usr/bin/systemctl stop exim"
if failed host localhost port 25 protocol smtp for 2 cycles then restart
if 4 restarts within 10 cycles then timeout
如果修改过MONIT配置内容，需要重新启动 Monit 服务才能生效 ▼
systemctl restart monit
2018年5月26日更新：
cd /etc/monit.d/
git clone https://github.com/infinitnet/vesta-centos7-monit.git ./ && rm -f README.md
myip=1.2.3.4
sed -i 's/host localhost/host '$myip'/g' /etc/monit.d/*.conf
systemctl restart monit
因为可能会出现错误，找不到git bash command ▼
CentOS 7错误找不到git bash command not found linux
安装好 VestaCP 控制面板后，在配置Monit监控程序时：git clone https://github.com/infinitnet/vesta-centos7-monit.git ./ && rm -f README.md出现错误提示：-bash: git: com……
还可能会出现输入此命令后 ▼
sed -i 's/host localhost/host '$myip'/g' /etc/monit.d/*.conf
出现以下错误提示 ▼
sed: can't read /etc/monit.d/*.conf: No such file or directory
Monit日志查看错误
SSH查看monit.log 日志文件命令 ▼
tailf /var/log/monit.log
建议SFTP登录 /var/log/monit.log 以完全查看之前 monit.log 日志文件的状态。
邮件发送错误
如果Monit邮件无法发送，会出现以下错误提示 ▼
error : Cannot open a connection to the mailserver localhost:25 -- Operation now in progress error : Mail: Delivery failed -- no mail server is available
解决邮件发送错误
陈沩亮建议使用Gmail SMTP ▼
set mailserver smtp.gmail.com port 587 username "[email protected]" password "password" using tlsv1 with timeout 30 seconds
解决方法是替换 Monit 配置文件里的 set mailserver，详情请查看这篇教程 ▼
Monit日志提示Mail: 534 5.7.14 https://support.google.com/mail/answer/78754 – gsmtp
Monit监控程序，若设置set mailserver localhost with timeout 30 seconds 却发送邮件失败，怎么办？陈沩亮建议使用Gmail SMTP ▼set mailserver smtp.gmail.com port 587 username “[email protected]……
filesystem statistic错误
如果在 monit.log 日志文件中，发现以下错误问题 ▼
filesystem statistic error: cannot read /proc/diskstats -- No such file or directory
解决filesystem statistic错误
第 1 步：SSH 进入 /etc/monit.d 目录 ▼
cd /etc/monit.d
第 2 步：删除 Monit 监控服务文件 “root-space.conf” ▼
rm -rf root-space.conf
第 3 步：SSH 重启 Monit监控 ▼
systemctl restart monit.service
Monit命令（CentOS 7专用）
查看 Monit 启动状态 ▼
systemctl status monit.service
启动 Monit 服务 ▼
systemctl start monit.service
关闭 Monit 服务 ▼
systemctl stop monit.service
重新启动 Monit 服务 ▼
systemctl restart monit
开机启动 Monit 服务 ▼
systemctl enable monit.service
开机关闭 Monit 服务 ▼
systemctl disable monit.service