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分类: 系统运维

2013-02-01 13:43:31

三、监控远程linux主机

(一)常规信息的监控

 

这里监控linux远程主机的系统信息,使用到NRPE插件。

 

1.先安装NRPE插件

# wget

# tar xvf nrpe-2.12.tar.gz

# cd nrpe-2.12

#./configure --with-nagios-user=nagios --with-nagios-group=nagios

# make all

# make install-plugin

# make install-daemon

# make install-daemon-config

# make install-xinetd

# vi /etc/xinetd.d/nrpe

# vi /etc/xinetd.d/nrpe

      only_from       = 192.168.137.89

# /etc/init.d/xinetd restart

# vi /etc/services

nrpe            5666/tcp                        # nrpe for nagios

# /etc/init.d/xinetd restart

# netstat -nltp

 

 

# ./check_nrpe –H 192.168.137.89

 

 

 

-----------------------------------------------------------------------------------------------------------------------------------------------

2.centreon定义check_nrpe

command_name  check_nrpe

command_line  $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$

 

 

----------------------------------------------------------------------------------------------------------------------------------------------
3.nrpe.cfg文件定义给check_nrpe用的监控命令

因为是在监控本机上,这部分是可选的,可以不定义。

# vi /usr/local/nagios/etc/nrpe.cfg

command[check_users]=/usr/local/nagios/libexec/check_users -w 5 -c 10

command[check_load]=/usr/local/nagios/libexec/check_load -w 15,10,5 -c 30,25,20

command[check_disk]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% 

command[check_zombie_procs]=/usr/local/nagios/libexec/check_procs -w 5 -c 10 -s Z

command[check_total_procs]=/usr/local/nagios/libexec/check_procs -w 250 -c 300

command[check_cpu]=/usr/local/nagios/libexec/check_cpu.sh -w 70 -c 80

command[check_mem]=/usr/local/nagios/libexec/check_mem.sh --raw -w 85 -c 95

command[check_uptime]=/usr/local/nagios/libexec/check_uptime

 ----------------------------------------------------------------------------------------------------------------------------------------------

4.定义模板

把常用一些监控内容制定成模板,这样,当再新增主机监控服务的时候,就不必一个个增加了。

这里制定成模板的监控内容有:

CPUmemoryprocessdiskuptime(包含了loadusers)

 


照此步骤,依次增加!check_disk 、!check_mem 、!check_uptime、!check_total_procs、!check_zombie_procs

check_uptime,完成后如图:


 

 ----------------------------------------------------------------------------------------------------------------------------------------------

5.把定义的nrpe模板关联到主机模板

 

 

 


----------------------------------------------------------------------------------------------------------------------------------------------
6.被监控机

1)现在打开另一台被监控linux主机终端

2)按前面的方法安装nagios-pluginsnrpe插件

3)定义nrpe的监控命令

# vi /usr/local/nagios/etc/nrpd.cfg

command[check_users]=/usr/local/nagios/libexec/check_users -w 5 -c 10

command[check_load]=/usr/local/nagios/libexec/check_load -w 15,10,5 -c 30,25,20

command[check_disk]=/usr/local/nagios/libexec/check_disk -w 20% -c 10%

command[check_zombie_procs]=/usr/local/nagios/libexec/check_procs -w 5 -c 10 -s Z

command[check_total_procs]=/usr/local/nagios/libexec/check_procs -w 250 -c 300

command[check_cpu]=/usr/local/nagios/libexec/check_cpu.sh -w 70 -c 80

command[check_mem]=/usr/local/nagios/libexec/check_mem.sh --raw -w 85 -c 95

command[check_uptime]=/usr/local/nagios/libexec/check_uptime

 

4nrpe.cfg中定义的插件命令,这里必须存在,如果没有的,请把它们copydownload下来

Centreon监控主机执行:

# cd /usr/local/nagios/libexec 

# scp check_cpu.sh  root@192.168.137.213:/usr/local/nagios/libexec/

# scp check_mem.sh  root@192.168.137.213:/usr/local/nagios/libexec/

 

在被监控主机执行:

# cp /usr/bin/uptime  check_uptime

# chown nagios.nagios check_cpu.sh

# chown nagios.nagios check_mem.sh

# chown nagios.nagios check_uptime

 

5)修改服务配置文件,只允许被centreon监控,并重启xined服务使其生效

# vi /usr/local/nagios/etc/nrpe.cfg

server_address=192.168.137.213

allowed_hosts=192.168.137.213,192.168.137.89

 

# vi /etc/xinetd.d/nrpe

only_from       = 192.168.137.213  192.168.137.89

 

# /etc/init.d/xinetd restart

# netstat -nltp

 

centreon监控机和被监控机上测试连接:

 

正确之后在才进行后面的操作。

 ----------------------------------------------------------------------------------------------------------------------------------------------

7.监控远程linux主机的基本信息

7.1 Centreon监控机上,增加被监控主机:

 

 

 

 


 

 

 

 

7.2查看,添加web主机的时候,已经自动添加了要监控的服务(因为我们前面定义了模板,并做了关联):

 

 

7.3 激活配置:

 

 

 

 

 

如果监控看中没有上面的Graphs图形标志,请重启下centstorage服务

# /etc/init.d/centstorage restart
----------------------------------------------------------------------------------------------------------------------------------------------

(二)监控远程linux主机的其它内容

web (Nginx_status tomcat php)     mysqlmysql主从状态、sshntpftprsync

 

1. 监控nginx状态,

 

使用check_nginx.sh插件:

下载:

1.1 定义命令

在被监控机上增加对check_ngios.sh的定义:

# vi /usr/local/nagios/etc/nrpe.cfg  

command[check_nginx]=/usr/local/nagios/libexec/check_nginx.sh -w 50 -c 100

# /etc/init.d/xinetd restart

1.2 修改脚本里的变量值:

# vi /usr/local/nagios/libexec/check_nginx.sh

ST_OK=0

ST_WR=1

ST_CR=2

ST_UK=3

hostname="localhost"

port=80

path_pid=/usr/local/webserver/nginx/logs/

name_pid="nginx.pid"

status_page="nginx_status"

1.3修改nginx配置文件,关重启nginx

# vi nginx.conf

location /nginx_status {

            stub_status on;

            access_log off;

            allow 127.0.0.1;

}

# ps –aux |grep nginx

 

# kill –HUP 26219

 

1.4 增加服务

Check_command    check_nrpe

Args        !check_nginx 

 

 

 

 



 

 

 

 ----------------------------------------------------------------------------------------------------------------------------------------------

2. 监控apache服务的状态,

使用check_apache.sh 插件

下载:

# chmod +x check_apache.sh 

# chown nagios.nagios check_apache.sh

2.1 在被监控机上:

# vi /etc/httpd/conf/httpd.conf

ExtendedStatus On

    SetHandler server-status

    Order deny,allow

    Deny from all

    Allow from 127.0.0.1 192.168.137.89

# /etc/init.d/httpd restart

 

2.2 centreon监控机上:

定义命令:

 Command_name  check_apache

Command_line   $USER1$/check_apache.sh -H $HOSTADDRESS$ -P  $ARG1$  -b $ARG2$ -p $ARG3$ -n $ARG4$ -wr $ARG5$  -cr $ARG6$

 

 

 

2.3 增加服务:

Check_command    check_apache

Args         !80!/usr/sbin!/var/run/!httpd.pid!100!250 

 

 

 

3. 监控tomcat

3.1 被监控机上:

# vi test.jps

tomcat UP <%= new java.util.Date() %>

centreon监控机上

定义命令:

 Command_name  check_tomcat

Command_line  $USER1$/check_http -H $ARG1$ -p $ARG2$  --url=$ARG3$ --onredirect=critical --string=UP

 

3.2增加服务:

Check_command    check_tomcat

Args         !!8080!/test.jsp

 

 

 

------------------------------------------------------------------------------------------------------------------------------------------------------------------

 

 

4. 监控HTTP

 

4.1定义命令:

 Command_name  check_http

Command_line  $USER1$/check_http -H $ARG1$ -p $ARG2$  -w $ARG3$ -c $ARG4$

 

4.2增加服务:

Check_command    check_http

Args         !!80!5!10

 

 

------------------------------------------------------------------------------------------------------------------------------------------------------------------

5. 监控mysql:

一般监控:

5.1 被监控机上:

mysql> grant usage ON *.* to nagios@'192.168.137.89' identified by 'nagiospw';

Query OK, 0 rows affected (0.00 sec)

 

5.2 定义命令:

 

command_name check_mysql

command_line $USER1$/check_mysql-H $HOSTADDRESS$ -P $ARG1$ -u $ARG2$ -p $ARG3$

 

5.3 增加服务:

 

check_command             check_mysql

Args              !3306!nagios!nagiospw

 

 

 ------------------------------------------------------------------------------------------------------------------------------------------------------------------

主从监控:

 

5.4 被监控机上:

mysql>  grant usage,replication client ON *.* to nagios@'192.168.137.89' identified by 'nagios';

 

5.5 centreon监控机上:

下载:

wget

# tar xvf check_mysql_health-2.1.3.tar.gz

# cd check_mysql_health-2.1.3

# ./configure --prefix=/usr/local/nagios \

--with-nagios-user=nagios --with-nagios-group=nagios  \

--with-perl

# make && make install

# chown nagios.nagios /usr/local/nagios/libexec/check_mysql_health

# vi  /usr/local/nagios/libexec/check_mysql_health

 

 

5.6 定义命令:

command_name check_mysql_health

command_line $USER1$/check_mysql_health --hostname $ARG1$ --port $ARG2$  --username $ARG3$ --password $ARG4$ --mode $ARG5$

 

 

5.7 增加服务:

check_command   check_mysql_health

Args   !192.168.137.203!3306!nagios!nagiospw!slave-io-running

 


 

 -----------------------------------------------------------------------------------------------------------------------------------------------------------------

 

 

6. 监控ssh

 

6.1定义命令:

command_namecheck_ssh

command_line $USER1$/check_ssh –H $HOSTADDRESS$  -p  $ARG1$  

 

6.2增加服务:

check_command   check_ssh

Args   !22

 

 

 ------------------------------------------------------------------------------------------------------------------------------------------------------------------

7. 监控ftp

 

7.1定义命令:

 

command_namecheck_ftp

command_line $USER1$/check_ftp –H $HOSTADDRESS$  -p  $ARG1$  -w $ARG2$ -c $ARG3$

 

7.2增加服务:

check_command   check_ftp

Args !21!10!15

 

 

  ------------------------------------------------------------------------------------------------------------------------------------------------------------------

8. 监控NTP

 

8.1定义命令:

command_name check_ntp

command_line  $USER1$/check_ntp -H$HOSTADDRESS$-w$ARG1$-c$ARG2$-j$ARG3$-k$ARG4$

8.2 增加服务:

check_command   check_ntp

Args   !1!3!-1:100!-1:200

 

 

 

  ------------------------------------------------------------------------------------------------------------------------------------------------------------------

9.监控rsync

 

下载:

 

9.1定义命令:

command_name check_rsync

command_line  $USER1$/check_rsync2.pl -H $HOSTADDRESS$

 

9.2 增加服务:

check_command   check_rsync



CCIE Security 2009 IOS防火墙合集


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