How to configure the Monit process on the Vesta CP panel of the CentOS 7 system?

prior toChen WeiliangBlog has sharedCentOS 6 Tutorial to install and configure Monit ▼

How does CentOS 6 use Monit to monitor? Linux installation and uninstallation of Monit tutorial

How does CentOS 6 use monit monitoring? Linux installation and uninstallation monit tutorial monit monitoring program is an open source monitoring tool for the Linux operating system, it can help you use a web browser to monitor system processes, when a program or service fails and goes down, monit can make it...

However, in CentOS 7 configurationMonit monitoringThe program, with some differences from CentOS 6, is not exactly the same.

How to install Monit monitoring program on VestaCP panel of CentOS 7 system?

This tutorial focuses on: How to install the Monit monitoring program in the VestaCP panel running on a CentOS 7 server? CentOS 7 system VestaCP panel, how to set up Monit configuration? What is Monit? Monit is a small tool for managing and monitoring Unix systems...

if yourLinuxThe host uses the CentOS 7 system. After installing Monit on the Vesta CP panel, you can follow this tutorial to configure the Monit monitoring program.

Monit monitoring process service

The following is the service configuration content of the Monit monitoring process (delete some less-used monitoring services):

Monit monitoring configuration

The Monit configuration file names are different for CentOS 6 & 7:

• The name of the Monit configuration file for CentOS 6 is "monit.conf"
• The name of the Monit configuration file for CentOS 7 is "monitrc"

with SFTP softwareAfter entering your Linux server, edit the Monit configuration file ▼

/etc/monitrc

Add the following configuration content to this "monitrc" file ▼

##
## 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: monit@$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: admin@xxxx }

# 设置邮件通知接收者。建议发到gmail，方便邮件过滤。
set alert xxx@xxxx

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

If you have modified the MONIT configuration content, you need to restart the Monit service to take effect▼

systemctl restart monit

Update on February 2018, 5:

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

• Replace with your shared IP1.2.3.4.

Could not find git bash command because an error might occur ▼

CentOS 7 error git bash command not found linux

After installing the VestaCP control panel, when configuring the Monit monitoring program: git clone https://github.com/infinitnet/vesta-centos7-monit.git ./ && rm -f README.md An error message appears: -bash: git : com...

It may also appear that after entering this command ▼

sed -i 's/host localhost/host '$myip'/g' /etc/monit.d/*.conf

The following error message appears ▼

sed: can't read /etc/monit.d/*.conf: No such file or directory

Monit log view error

SSH view monit.log log file command▼

tailf /var/log/monit.log

• SSH to view the monit.log file, only the last 10 lines of logs can be displayed.

SFTP login is recommended /var/log/monit.log to fully view the status of the previous monit.log log file.

Email sending error

If the Monit mail cannot be sent, the following error message will appear ▼

error : Cannot open a connection to the mailserver localhost:25 -- Operation now in progress
error : Mail: Delivery failed -- no mail server is available

Fix email sending errors

Chen WeiliangRecommended to usegmail SMTP ▼

set mailserver smtp.gmail.com port 587
username "[email protected]"
password "password"
using tlsv1
with timeout 30 seconds

The solution is to replace the set mailserver in the Monit configuration file, please see this tutorial for details ▼

Monit log prompt Mail: 534 5.7.14 https://support.google.com/mail/answer/78754 – gsmtp

Monit monitoring program, what should I do if I set set mailserver localhost with timeout 30 seconds but fail to send mail?Chen Weiliang suggested to use Gmail SMTP ▼set mailserver smtp.gmail.com port 587 username "user@…

filesystem statistic error

If you find the following errors in the monit.log log file ▼

filesystem statistic error: cannot read /proc/diskstats -- No such file or directory

• Probably because Linux defaults to minimal installation VestaCPpanel, does not exist /proc/diskstats Disk status monitoring file.

resolve filesystem statistic errors

Step 1:SSH in /etc/monit.d catalog ▼

cd /etc/monit.d

Step 2:Delete the Monit monitoring service file "root-space.conf" ▼

rm -rf root-space.conf

Step 3:SSH restart Monit monitoring ▼

systemctl restart monit.service

Monit Command (Special for CentOS 7)

View Monit startup status ▼

systemctl status monit.service

Start the Monit service ▼

systemctl start monit.service

Close the Monit service▼

systemctl stop monit.service

Restart the Monit service ▼

systemctl restart monit

Start the Monit service at boot ▼

systemctl enable monit.service

Turn on and off the Monit service ▼

systemctl disable monit.service