Nagios的安装和配置（实验）

不念不忘少年蓝@ 2021-12-23 02:23 410阅读 0赞

目 录

一、实验介绍  
二、Nagios-Server的安装  
三、Nagios-client的安装  
四、调试验证  
五、结论  
六、出现错误及解决方法

![在这里插入图片描述][2019062710485864.gif]  
一、实验介绍  
Server安装了nagios软件，对监控的数据做处理，并且提供web界面查看和管理，也可以对本机自身的信息进行监控。Client安装了NRPE等客户端，根据监控机的请求执行监控，然后将结果回传给监控机。  
实验目的  
掌握Nagios监控  
掌握Nagios监控服务的搭建与配置  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70]  
CentOS版本：CentOS Linux release 7.x(Core) 64位  
Apache版本：Apache/2.4.6 nagios版本：nagios-4.3.1  
nagios-plugins版本：nagios-plugins-2.2.1  
二、Nagios-Server的安装  
1、 创建nagios用户和组（创建nagios用户并指定该用户不能登录系统）  
![在这里插入图片描述][20190627102125167.PNG]  
2、 安装Nagios  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 1]  
源码配置  
![在这里插入图片描述][20190627102139734.PNG]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 2]  
编译安装 \#make all && make install  
![在这里插入图片描述][20190627102205841.PNG]  
![在这里插入图片描述][201906271022287.PNG]  
\#make install-init  
![在这里插入图片描述][20190627102246877.PNG]  
\#make install-config  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 3]  
\#make install-commandmode  
![在这里插入图片描述][20190627102301993.PNG]  
\#make install-webconf  
![在这里插入图片描述][2019062710230883.PNG]  
目录核对正确则表示安装成功  
![在这里插入图片描述][20190627102316932.PNG]  
3、 安装邮件服务  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 4]  
![在这里插入图片描述][20190627102351941.PNG]  
启动服务  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 5]  
发送邮件测试（输入完成后按Ctrl+D退出并发送）  
![在这里插入图片描述][2019062710241965.PNG]  
指定接受警告信息的邮件地址  
\#vi /usr/local/nagios/etc/objects/contacts.cfg(修改参数email)  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 6]  
4、 修改web界面登录验证信息  
![在这里插入图片描述][20190627102434780.PNG]  
修改nagios用户权限（因为系统默认用户为nagiosadmin），配置完成后需要重新启动http服务（systemctl restart httpd.service）  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 7]  
检测主配置文件是否有语法错误  
\#/usr/local/nagios/bin/nagios –v /usr/local/nagios/etc/nagios.cfg  
![在这里插入图片描述][20190627102523374.PNG]  
如下无警告错误即为成功  
![在这里插入图片描述][20190627102529583.PNG]  
5、 安装nagios插件  
![在这里插入图片描述][20190627102539901.PNG]  
配置  
![在这里插入图片描述][20190627102652743.PNG]  
编译并安装 \#make && make install  
查看已安装的插件数量  
![在这里插入图片描述][20190627102707765.PNG]  
6、 启动验证服务  
![在这里插入图片描述][20190627102715284.PNG]  
![在这里插入图片描述][20190627102741316.PNG]  
如果防火墙没有安装会影响后续的验证  
![在这里插入图片描述][20190627102749144.PNG]  
![在这里插入图片描述][20190627102820572.PNG]  
添加防火墙规则（开放http端口），重启防火墙并重启nagios服务  
![在这里插入图片描述][20190627102833636.PNG]  
打开nagios的web页面验证:192.168.1.111:/nagios  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 8]  
主页  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 9]  
查看本机的监视信息  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 10]  
查看本机的服务信息（其中有一条warning信息，应该受到告警信息）  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 11]  
7、 安装nrpe  
![在这里插入图片描述][20190627102928402.PNG]  
源码配置  
![在这里插入图片描述][20190627102934786.PNG]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 12]  
\#make all  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 13]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 14]  
三、Nagios-client的安装  
1、关闭防火墙和selinux,并重启服务器  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 15]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 16]  
2、配置环境  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 17]  
3、安装nagios-plugin  
添加nagios用户  
![在这里插入图片描述][20190627103234290.PNG]  
解压安装  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 18]  
源码配置  
![在这里插入图片描述][2019062710324738.PNG]  
\#make && make install  
4、安装nrep  
![在这里插入图片描述][20190627103316624.PNG]  
源码配置  
![在这里插入图片描述][20190627103323809.PNG]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 19]  
开始安装  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 20]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 21]  
启动nrpe \#/usr/local/nagios/bin/nrpe –d –c /usr/local/nagios/etc/nrpe.cfg  
如需要重启则需要先关闭相关进程，再查看端口5666是否关闭，最后使用启动命令  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 22]  
四、调试验证  
1、验证连通性 在/usr/local/nagios/etc/nrpe.cfg文件中server的ip地址  
\#vi /usr/local/nagios/etc/nrpe.cfg  
![在这里插入图片描述][20190627103458548.PNG]  
![在这里插入图片描述][20190627103506520.PNG]  
\#重启nrpe  
![在这里插入图片描述][20190627103511774.PNG]  
在server主机做验证  
![在这里插入图片描述][20190627103516999.PNG]  
![在这里插入图片描述][20190627103532117.PNG]  
\#/usr/local/nagios/libexec/check\_nrpe –H 要验证的主机IP  
![在这里插入图片描述][20190627103550673.PNG]  
打开nagios的web页面验证:192.168.1.111/nagios/  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 23]  
在server和client端上做同样的验证  
\#/usr/local/nagios/libexec/check\_nrpe –H localhost![在这里插入图片描述][20190627103621228.PNG]  
![在这里插入图片描述][20190627103609954.PNG]  
注释nrpe.cfg中以下几行  
![在这里插入图片描述][2019062710363047.PNG]  
2、创建监控脚本  
在nrpe.cfg文件末尾添加下面几行内容  
![在这里插入图片描述][2019062710371222.PNG]  
创建一个监控内存的perl脚本，并修改脚本权限  
![在这里插入图片描述][20190627103718140.PNG]  
重启nrpe服务，并在主机验证脚本效果  
![在这里插入图片描述][20190627103725309.PNG]  
在server端进行脚本验证  
![在这里插入图片描述][20190627103729944.PNG]  
修改nagios.cfg配置文件，注释一行并添加两行内容  
![在这里插入图片描述][20190627103745727.PNG]  
在/usr/local/nagios/etc/objects路径下创建hosts.cfg和services.cfg文件  
![在这里插入图片描述][20190627103752996.PNG]  
修改检查语法脚本  
\#vi /etc/init.d/nagios +181  
![在这里插入图片描述][20190627103812412.PNG]  
修改commands.cfg文件，末尾添加以下内容  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 24]  
3、主机模板配置  
\#vi hosts.cfg +21  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 25]  
并添加以下内容  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 26]  
将监控的主机添加到主机组里  
\#vi hosts.cfg +76  
![在这里插入图片描述][20190627103847866.PNG]  
服务模板配置  
\#vi services.cfg  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 27]  
重启nagios服务  
![在这里插入图片描述][2019062710391768.PNG]  
打开nagios的web页面验证:192.168.1.111/nagios/  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ5NTY3OA_size_16_color_FFFFFF_t_70 28]  
四、结论  
这次实验，首先在Vmware中安装两台CentOS，名称分别为Nagios-Server和Nagios-Client，IP地址分别为192.168.1.111和192.168.1.112，首先配置环境，即配置本地yum源和检查依赖环境；在Nagios-Server主机上安装Nagios，安装邮件服务并进行测试，修改web界面登录验证信息，安装nagios插件并打开nagios的web页面查看本机的监视和服务信息，并安装nrpe。在Nagios-Client主机上安装nagios-plugin和nrpe，在Client端进行一些配置，并在Service进行调试验证，还可通过创建监控脚本，在两台主机上进行互相调试验证；配置主机模板，通过修改一些文件，并在web页面进行查看验证。  
五、出现的错误与解决方法：  
1、Server端安装nagios，执行make install命令时出现如下错误：  
![在这里插入图片描述][20190627104313885.PNG]  
解决方法：\#yum -y install zip unzip，执行此命令即可  
![在这里插入图片描述][2019062710432275.PNG]  
2、Client端安装nagios-plugin,源码配置时出现如下错误：  
![在这里插入图片描述][20190627104332773.PNG]  
解决方法：创建用户组Nagios,问题解决  
![在这里插入图片描述][20190627104340496.PNG]  
3、安装nrpe,执行\#make install-daemon-config出现如下错误：  
![在这里插入图片描述][20190627104347122.PNG]  
解决方法：\#make install-config，执行此命令即可  
![在这里插入图片描述][2019062710435543.PNG]  
实验完毕，可以好好玩耍了  
![在这里插入图片描述][20190627104025475.gif]

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