Monit 微服务监控

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#Monit #进程监控

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2.1.1、Tomcat 启动生成PID.

2.1.2、Monit 配置文件Tomcatrc

2.3、普通Java应用进程

2.4、Spring boot

2.5、Mysql

1、Monit 安装与配置

1.1、自动安装

yum install -y epel-release && yum install -y monit

1.2、手动安装

下载路径：

https://dl.fedoraproject.org/pub/epel/

https://mmonit.com/monit/dist/

1.3、启动命令：

systemctl restart monit

1.4、随系统自动启动：

chkconfig mysqld on

1.5、添加配置文件

/etc/monitrc会include 下面的配置文件

配置文件目录：/etc/monit.d/

1.6、配置文件检测

monit –t

monit -t -c /etc/monitrc

如果有提示如下语句，那么就是可用的：

Control file syntax OK

重启生效：

systemctl restart monit

`2、各种应用程序本地监控`

2.1、Tomcat

2.1.1、Tomcat 启动生成PID.

# Get standard environment variables

PRGDIR=`dirname "$PRG"`

CATALINA_PID=/var/run/tomcat.pid

2.1.2、Monit 配置文件Tomcatrc

check process tomcat with pidfile /var/run/tomcat.pid

      start program = "/home/connect/apache-tomcat-8.5.41/bin/startup.sh"  with timeout 60 seconds

      stop program = "/home/connect/apache-tomcat-8.5.41/bin/shutdown.sh"

2.3、普通Java应用进程

public static void main(String[] args) throws Exception {

        int pid = getPid();

    }


    private static int getPid() {

        RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();

        String name = runtime.getName(); // format: "pid@hostname"

        int pid = -1;

        try {

           pid = Integer.parseInt(name.substring(0, name.indexOf('@')));

        } catch (Exception e) {

           pid = -1;

        }

        return pid;

    }

2.4、Spring boot

配置文件application.properties文件内容如下，该配置指定了pid文件的位置：

spring.pid.file=/xxx/syb.pid

@SpringBootApplication

public class App {

    public static void main(String[] args) {

        SpringApplication sa = new SpringApplication(App.class);

        sa.addListeners(new ApplicationPidFileWriter());

        sa.run(args);

    }

}

2.5、Mysql

在 my.cnf 中配置 PID

[mysqld]

pid-file= /var/run/mysqld/mysqld.pid

配置脚本

check process mysql with pidfile /run/mysqld/mysqld.pid

   start program = "/usr/sbin/service mysql start" with timeout 60 seconds

   stop program = "/usr/sbin/service mysql stop"

   if failed unixsocket /var/run/mysqld/mysqld.sock then restart