【nagios主机监控系统】安装

1.安装依赖包
[root@node1 opt]# yum install -y gcc glibc glibc-common gd gd-devel xinetd openssl-devel
[root@node1 ~]# useradd -s /sbin/nologin nagios
[root@node1 ~]# mkdir /usr/local/nagios
[root@node1 ~]# chown -R nagios.nagios /usr/local/nagios

2、编译安装Nagios
wget http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-3.4.3.tar.gz

[root@node1 ~]# tar zxvf nagios-3.4.3.tar.gz
[root@node1 ~]# cd nagios
[root@node1 ~]# ./configure --prefix=/usr/local/nagios

General Options:
 -------------------------
        Nagios executable:  nagios
        Nagios user/group:  nagios,nagios
       Command user/group:  nagios,nagios
            Embedded Perl:  no
             Event Broker:  yes
        Install ${prefix}:  /usr/local/nagios
                Lock file:  ${prefix}/var/nagios.lock
   Check result directory:  ${prefix}/var/spool/checkresults
           Init directory:  /etc/rc.d/init.d
  Apache conf.d directory:  /etc/httpd/conf.d
             Mail program:  /bin/mail
                  Host OS:  linux-gnu

 Web Interface Options:
 ------------------------
                 HTML URL:  http://localhost/nagios/
                  CGI URL:  http://localhost/nagios/cgi-bin/
 Traceroute (used by WAP):  /bin/traceroute
Review the options above for accuracy.  If they look okay,
type 'make all' to compile the main program and CGIs.
[root@node1 ~]# make all
[root@node1 ~]#make install

[root@node1 nagios]#  make install-init
/usr/bin/install -c -m 755 -d -o root -g root /etc/rc.d/init.d
/usr/bin/install -c -m 755 -o root -g root daemon-init /etc/rc.d/init.d/nagios

*** Init script installed ***

[root@node1 nagios]# make install-commandmode
/usr/bin/install -c -m 775 -o nagios -g nagios -d /usr/local/nagios/var/rw
chmod g+s /usr/local/nagios/var/rw

*** External command directory configured ***

[root@node1 nagios]# make install-config
/usr/bin/install -c -m 775 -o nagios -g nagios -d /usr/local/nagios/etc
/usr/bin/install -c -m 775 -o nagios -g nagios -d /usr/local/nagios/etc/objects
/usr/bin/install -c -b -m 664 -o nagios -g nagios sample-config/nagios.cfg /usr/local/nagios/etc/nagios.cfg
/usr/bin/install -c -b -m 664 -o nagios -g nagios sample-config/cgi.cfg /usr/local/nagios/etc/cgi.cfg
/usr/bin/install -c -b -m 660 -o nagios -g nagios sample-config/resource.cfg /usr/local/nagios/etc/resource.cfg
/usr/bin/install -c -b -m 664 -o nagios -g nagios sample-config/template-object/templates.cfg /usr/local/nagios/etc/objects/templates.cfg
/usr/bin/install -c -b -m 664 -o nagios -g nagios sample-config/template-object/commands.cfg /usr/local/nagios/etc/objects/commands.cfg
/usr/bin/install -c -b -m 664 -o nagios -g nagios sample-config/template-object/contacts.cfg /usr/local/nagios/etc/objects/contacts.cfg
/usr/bin/install -c -b -m 664 -o nagios -g nagios sample-config/template-object/timeperiods.cfg /usr/local/nagios/etc/objects/timeperiods.cfg
/usr/bin/install -c -b -m 664 -o nagios -g nagios sample-config/template-object/localhost.cfg /usr/local/nagios/etc/objects/localhost.cfg
/usr/bin/install -c -b -m 664 -o nagios -g nagios sample-config/template-object/windows.cfg /usr/local/nagios/etc/objects/windows.cfg
/usr/bin/install -c -b -m 664 -o nagios -g nagios sample-config/template-object/printer.cfg /usr/local/nagios/etc/objects/printer.cfg
/usr/bin/install -c -b -m 664 -o nagios -g nagios sample-config/template-object/switch.cfg /usr/local/nagios/etc/objects/switch.cfg

*** Config files installed ***

Remember, these are *SAMPLE* config files.  You'll need to read
the documentation for more information on how to actually define
services, hosts, etc. to fit your particular needs.

[root@node1 nagios]# chkconfig --add nagios
[root@node1 nagios]# chkconfig --level 35 nagios on
[root@node1 nagios]# chkconfig --list nagios
nagios          0:off   1:off   2:off   3:on    4:on    5:on    6:off

3、安装Nagios 插件
[root@node1 opt]#tar zxvf nagios-plugins-1.4.13.tar.gz
[root@node1 opt]# cd nagios-plugins-1.4.13
[root@node1 opt]#  ./configure --prefix=/usr/local/nagios

config.status: creating po/Makefile
            --with-apt-get-command:
              --with-ping6-command: /bin/ping6 -n -U -w %d -c %d %s
               --with-ping-command: /bin/ping -n -U -w %d -c %d %s
                       --with-ipv6: yes
                      --with-mysql: no
                    --with-openssl: yes
                     --with-gnutls: no
               --enable-extra-opts: no
                       --with-perl: /usr/bin/perl
             --enable-perl-modules: no
                     --with-cgiurl: /nagios/cgi-bin
               --with-trusted-path: /bin:/sbin:/usr/bin:/usr/sbin
[root@node1 nagios-plugins-1.4.13]# make && make install
4、安装与配置Apache和Php

Apache 和Php 不是安装nagios 所必须的，但是nagios提供了web监控界面，通过web监控界面可以清晰的看到被监控主机、资源的运行状态，因此，安装一个web服务是很必要的。
需要注意的是，nagios在nagios3.1.x版本以后，配置web监控界面时需要php的支持。这里我们下载的nagios版本为nagios-3.4.3，因此在编译安装完成apache后，还需要编译php模块，这里选取的php版本为php5.4.10。
a. 安装Apache
# wget http://archive.apache.org/dist/httpd/httpd-2.2.23.tar.gz
# tar zxvf httpd-2.2.23.tar.gz
# cd httpd-2.2.23
[root@node1 ~]# mkdir -p /usr/local/apache2
[root@node1 ~]# ./configure --prefix=/usr/local/apache2
[root@node1 ~]# make && make install

b. 安装Php
php-5.4.10.tar.gz
[root@node1 ~]# tar zxvf php-5.4.10.tar.gz
[root@node1 ~]# cd php-5.4.10
[root@node1 ~]#  ./configure --prefix=/usr/local/php --with-apxs2=/usr/local/apache2/bin/apxs
checking for strftime... (cached) yes
checking which regex library to use... php
checking whether to enable LIBXML support... yes
checking libxml2 install dir... no
checking for xml2-config path...
configure: error: xml2-config not found. Please check your libxml2 installation.
--解决方案
[root@node1 php-5.3.8]#yum erase zlib-devel
[root@node1 php-5.3.8]#yum install zlib-devel
[root@node1 php-5.3.8]#yum install libxml2-devel
[root@node1 ~]#  ./configure --prefix=/usr/local/php --with-apxs2=/usr/local/apache2/bin/apxs
+--------------------------------------------------------------------+
| License:                                                           |
| This software is subject to the PHP License, available in this     |
| distribution in the file LICENSE.  By continuing this installation |
| process, you are bound by the terms of this license agreement.     |
| If you do not agree with the terms of this license, you must abort |
| the installation process at this point.                            |
+--------------------------------------------------------------------+
Thank you for using PHP.
config.status: creating php5.spec
config.status: creating main/build-defs.h
config.status: creating scripts/phpize
config.status: creating scripts/man1/phpize.1
config.status: creating scripts/php-config
config.status: creating scripts/man1/php-config.1
config.status: creating sapi/cli/php.1
config.status: creating main/php_config.h
config.status: executing default commands
[root@master php-5.4.10]# make && make install

c. 配置apache
找到apache 的配置文件/usr/local/apache2/conf/httpd.conf
找到：

User daemon
Group daemon
修改为

User nagios
Group nagios
然后找到

<IfModule dir_module>
　　DirectoryIndex index.html
</IfModule>
修改为

<IfModule dir_module>
　　DirectoryIndex index.html index.php
</IfModule>
接着增加如下内容：

AddType application/x-httpd-php .php
为了安全起见，一般情况下要让nagios 的web 监控页面必须经过授权才能访问，这需要增加验证配置，即在httpd.conf 文件最后添加如下信息：

复制代码
#setting for nagios
ScriptAlias /nagios/cgi-bin "/usr/local/nagios/sbin"
<Directory "/usr/local/nagios/sbin">
     AuthType Basic
     Options ExecCGI
     AllowOverride None
     Order allow,deny
     Allow from all
     AuthName "Nagios Access"
     AuthUserFile /usr/local/nagios/etc/htpasswd             //用于此目录访问身份验证的文件
     Require valid-user
</Directory>
Alias /nagios "/usr/local/nagios/share"
<Directory "/usr/local/nagios/share">
     AuthType Basic
     Options None
     AllowOverride None
     Order allow,deny
     Allow from all
     AuthName "nagios Access"
     AuthUserFile /usr/local/nagios/etc/htpasswd
     Require valid-user
</Directory>
复制代码
d. 创建apache目录验证文件

在上面的配置中，指定了目录验证文件htpasswd，下面要创建这个文件：

# /usr/local/apache2/bin/htpasswd -c /usr/local/nagios/etc/htpasswd david

这样就在/usr/local/nagios/etc 目录下创建了一个htpasswd 验证文件，当通过http://192.168.1.108/nagios/ 访问时就需要输入用户名和密码了。
e. 查看认证文件的内容

# cat /usr/local/nagios/etc/htpasswd

f. 启动apache 服务

# /usr/local/apache2/bin/apachectl start

到这里nagios 的安装也就基本完成了，你可以通过web来访问了。
http://192.168.1.106/nagios/

 

 

遇到的问题与解决方案
问题一:
./configure以下错误发生
Sorry, I cannot run apxs.  Possiblereasons follow:
1. Perl is not installed
2. apxs was not found. Try to pass the path using--with-apxs2=/path/to/apxs
3. Apache was not built using --enable-so (the apxs usage page isdisplayed)
 
解决方法：指定正确的apxs路径
1.查找apxs路径
# whereis apxs
apxs:
说明系统没有安装apxs扩展工具
 
2.安装apxs
# yum install httpd-devel
3.查找apxs路径
# whereis apxs
apxs: /usr/sbin/apxs /usr/share/man/man8/apxs.8.gz
apxs安装成功
问题二：
安装apxs以下错误发生：
Package cyrus-sasl-plain needs cyrus-sasl-lib = 2.1.22-4, thisis not available.
解决方法：
# yum -y install cyrus*
之后再次安装apxs
问题三：
再次./configure以下错误发生
configure: error: xml2-config not found. Please check your libxml2installation.
解决方法：
安装libxml2
# yum install libxml2-devel
【问题四：=====================================================】
hecking libxml2 install dir... no
checking for xml2-config path... /usr/bin/xml2-config
checking whether libxml build works... no
configure: error: build test failed.  Pleasecheck the config.log for details.
解决方法：
# yum erase zlib-devel
# yum install zlib-devel
# yum install libxml2-devel

[root@node1 ~]#  ./configure --prefix=/usr/local/php --with-apxs2=/usr/local/apache2/bin/apxs

# make && make install