文章目录
之前陈沩亮博客有分享过CentOS 6 安装和配置Monit的教程 ▼
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。
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):
-
clamd - crond
- dovecot
- exim
- httpd
-
memcached - mysql
- nginx
-
spamassassin - sshd
- vesta-nginx
- vesta-php
- vsftpd
-
监控空间 和 索引节点 on -
监控系统资源(RAM,交换,CPU,负载)
Monit监控配置
CentOS 6 & 7 的 Monit配置文件名称是不同的:
- CentOS 6 的 Monit配置文件名称是 “monit.conf”
- CentOS 7 的 Monit配置文件名称是 “monitrc”
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: 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
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:
- 推荐使用以上的配置内容 ▲
- 不推荐使用以下SSH 命令,生成 Monit 监控服务的文件。
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
- 用你的共享IP替换1.2.3.4。
因为可能会出现错误,找不到git bash command ▼
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
- SSH查看monit.log文件,只能显示最近10行日志。
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
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 ▼
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
- 可能因为 Linux 默认最小化安装 VestaCP面板,不存在
/proc/diskstats
磁盘状态监控文件。
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
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