Centos日志处理

今天检查系统日志发现有，日志中都是以下格式的日志：

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Apr 22 09:26:26 jsmapp4 xinetd[3158]: EXIT: nrpe status=0 pid=14006 duration=0(sec)

Apr 22 09:26:27 jsmapp4 xinetd[3158]: EXIT: nrpe status=0 pid=14316 duration=1(sec)

Apr 22 09:26:27 jsmapp4 xinetd[3158]: EXIT: nrpe status=0 pid=14323 duration=1(sec)

Apr 22 09:26:27 jsmapp4 xinetd[3158]: START: nrpe pid=15937 from=::ffff:192.168.1.60

Apr 22 09:26:27 jsmapp4 xinetd[3158]: EXIT: nrpe status=0 pid=15937 duration=0(sec)

Apr 22 09:27:19 jsmapp4 pptp[27991]: anon log[logecho:pptp_ctrl.c:677]: Echo Reply received.

Apr 22 09:27:26 jsmapp4 xinetd[3158]: START: nrpe pid=7318 from=::ffff:192.168.1.60

Apr 22 09:27:26 jsmapp4 xinetd[3158]: START: nrpe pid=7327 from=::ffff:192.168.1.60

Apr 22 09:27:26 jsmapp4 xinetd[3158]: START: nrpe pid=7332 from=::ffff:192.168.1.60

Apr 22 09:27:26 jsmapp4 xinetd[3158]: EXIT: nrpe status=0 pid=7318 duration=0(sec)

Apr 22 09:27:26 jsmapp4 xinetd[3158]: EXIT: nrpe status=0 pid=7327 duration=0(sec)

Apr 22 09:27:26 jsmapp4 xinetd[3158]: EXIT: nrpe status=0 pid=7332 duration=0(sec)

Apr 22 09:27:26 jsmapp4 xinetd[3158]: START: nrpe pid=7652 from=::ffff:192.168.1.60

Apr 22 09:27:26 jsmapp4 xinetd[3158]: EXIT: nrpe status=0 pid=7652 duration=0(sec)

Apr 22 09:27:27 jsmapp4 xinetd[3158]: START: nrpe pid=8952 from=::ffff:192.168.1.60

Apr 22 09:27:27 jsmapp4 xinetd[3158]: EXIT: nrpe status=0 pid=8952 duration=0(sec)

通过分析以上日志发现：

xinetd是新一代的网络守护进程服务程序，又叫超级Internet服务器,常用来管理多种轻量级Internet服务。

这个进程来自于192.168.1.60这个ip，明显是内网ip，以前没有发现这个问题，奇怪。

去60这台服务器查看发现，有nagios警告的日志：

Apr 22 09:50:02 jsmbak1 nagios: Warning: The check of host 'jsmapp1' looks like it was orphaned (results never came back). I'm scheduling an immediate check of the host...

Apr 22 09:50:24 jsmbak1 nagios: Warning: The check of service 'check_mem' on host 'jsmapp4' looks like it was orphaned (results never came back). I'm scheduling an immediate check of the service...

Apr 22 09:51:02 jsmbak1 nagios: Warning: The check of service 'Current Load' on host 'Nagios-Server' looks like it was orphaned (results never came back). I'm scheduling an immediate check of the service...

Apr 22 09:51:02 jsmbak1 nagios: Warning: The check of service 'SSH' on host 'Nagios-Server' looks like it was orphaned (results never came back). I'm scheduling an immediate check of the service...

Apr 22 09:51:02 jsmbak1 nagios: Warning: The check of service 'Total Processes' on host 'Nagios-Server' looks like it was orphaned (results never came back). I'm scheduling an immediate check of the service...

Apr 22 09:51:02 jsmbak1 nagios: Warning: The check of service 'HTTP' on host 'jsmapp2' looks like it was orphaned (results never came back). I'm scheduling an immediate check of the service...

Apr 22 09:51:02 jsmbak1 nagios: Warning: The check of service 'HTTP' on host 'jsmapp3' looks like it was orphaned (results never came back). I'm scheduling an immediate check of the service...

Apr 22 09:51:46 jsmbak1 xinetd[16796]: START: nrpe pid=17625 from=::ffff:127.0.0.1

Apr 22 09:51:46 jsmbak1 xinetd[16796]: EXIT: nrpe status=0 pid=17625 duration=0(sec)

Apr 22 09:52:50 jsmbak1 xinetd[16796]: START: nrpe pid=17890 from=::ffff:127.0.0.1

Apr 22 09:52:50 jsmbak1 xinetd[16796]: EXIT: nrpe status=0 pid=17890 duration=0(sec)

Nagios是一款开源的免费网络监视工具，能有效监控Windows、Linux和Unix的主机状态、交换机、路由器等网络设置，打印机等。

Nagios可以监控的功能有：

1、监控网络服务（SMTP、POP3、HTTP、NNTP、PING等）；

2、监控主机资源（处理器负荷、磁盘利用率等）；

3、简单地插件设计使得用户可以方便地扩展自己服务的检测方法；

4、并行服务检查机制；

5、具备定义网络分层结构的能力，用"parent"主机定义来表达网络主机间的关系，这种关系可被用来发现和明晰主机宕机或不可达状态；

6、当服务或主机问题产生与解决时将告警发送给联系人（通过EMail、短信、用户定义方式）；

7、具备定义事件句柄功能，它可以在主机或服务的事件发生时获取更多问题定位；

8、自动的日志回滚；

9、可以支持并实现对主机的冗余监控；

10、可选的WEB界面用于查看当前的网络状态、通知和故障历史、日志文件等；

查看nagios进程发现，有多个进程

[root@jsmbak1 ~]# ps -ef|grep "bin/nagios"

root 4913 4095 0 11:12 pts/2 00:00:00 grep bin/nagios

nagios 5146 1 0 Feb18 ? 01:12:40 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

nagios 5286 1 0 Feb19 ? 01:15:13 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

nagios 9767 1 0 Feb18 ? 01:13:52 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

使用[nagios@jsmbak1 ~]$ killall nagios，杀掉所有nagios，然后重启

/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

如果想停止nrpe服务在xinetd下的日志输出

修改配置文件，禁用成功状态下的日志

[root@jsmapp3 tomcat]# vi /etc/xinetd.conf

# Define general logging characteristics.

log_type = SYSLOG daemon info

log_on_failure = HOST

# log_on_success = PID HOST DURATION EXIT

重新服务xinetd后再次查看日志，不再出现nrpe相关日志

[root@jsmapp3 tomcat]# service xinetd restart

Stopping xinetd: [ OK ]

Starting xinetd: [ OK ]

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Centos日志处理

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