NO.B.0008——简单检查

 

一、简单检查：

1、简单检查：使用ICMP协议或者TCP协议进行检查某个服务或者设备的存活。

2、关闭zabbix-agent.service模拟测试，

 

 

1、SMTP检查：

安装postfix   检查SMTP服务。

[root@localhost ~]# vim /etc/postfix/main.cf                //邮件传输代理软件
inet_interfaces = 192.168.1.60
mydestination = $myhostname, localhost.$mydomain, localhost    // localhost开放

[root@localhost ~]# systemctl restart postfix.service 
[root@localhost ~]# ss -tunlp
users:(("sshd",pid=22755,fd=3))
tcp    LISTEN     0      100           192.168.1.60:25      *:*    

[root@localhost ~]# telnet 192.168.1.60 25    //简单检查我们的25端口开启
Trying 192.168.1.60...
Connected to 192.168.1.60.
Escape character is '^]'.
220 localhost.localdomain ESMTP Postfix
ctrl+]
telnet>quit

SMTP的值是1

 

2、ICMP检查：

安装fping工具：

[root@localhost ~]# yum -y install fping
 [root@localhost ~]# ping 192.168.1.59
PING 192.168.1.59 (192.168.1.59) 56(84) bytes of data.
64 bytes from 192.168.1.59: icmp_seq=1 ttl=64 time=2.53 ms

ICMP显示的是ping值

 

 

 

 

 

 

 

 

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Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart

                                                                                                                                                   ——W.S.Landor

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