一， Nagios部署与配置方法：
Nagios服务端安装
Nagios插件安装
https://www.cnblogs.com/Richardzhu/p/3340638.html
Apache安装
https://www.cnblogs.com/Anker/p/3355573.html
php安装
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遇到问题：
1. 使用chkconfig --add 添加服务时提示“在nagios服务中读取信息时出错：没有那个文件或目录”
参考网址：http://blog.chinaunix.net/uid-28597757-id-3503976.html
2. 安装apatche时，./configure --prefix=/usr/local/apache2
报错：configure: error: APR not found. Please read the documentation.
3.安装apr，
报错：rm: cannot remove ‘libtoolT‘: No such file or directory
https://jingyan.baidu.com/article/b907e627611f6b46e7891cb6.html
4.安装apr,
报错：xml/apr_xml.c:35:19: 致命错误：expat.h：没有那个文件或目录
yum install -y expat-devel 即可
5.安装pcre
报错：configure: error: Invalid C++ compiler or C++ compiler flags
yum install -y gcc gcc-c++
6.安装apache
/usr/local/web/apr-util/lib/libaprutil-1.so: undefined reference to `XML_GetErrorCode‘
应该讲apt-util改为1.5的版本
https://www.cnblogs.com/zyos/p/7663717.html
7.安装php
源码安装php时出现configure: error: xml2-config not found. Please check your libxml2 installation...
https://blog.csdn.net/weixin_33759269/article/details/86231617
8.启动apach
解决apache启动错误"httpd:Could not reliably determine..."
https://blog.csdn.net/zhaomininternational/article/details/42293511
9. linux主机无法访问虚拟机Linux的apache
https://blog.csdn.net/zymx14/article/details/51440722
10. linux启动nagios无法通过web访问
需要关闭防火墙，centos关闭防火墙命令；
firewall-cmd --state
systemctl stop firewalld.service
systemctl disable firewalld.service //禁止开机启动
二，安装mysql方法：
https://www.cnblogs.com/yizitrd/p/5363068.html
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nagios运行调试：
启动apach命令：
/usr/local/apache/bin/apachectl restart
或
service httpd restart
chkconfig添加服务
chkconfig --add nagios
chkconfig --level 35 nagios on
chkconfig --list nagios
1. 检查配置文件是否正确
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
2. 启动nagios
a.初始化脚本启动
# /etc/init.d/nagios start
or
# service nagios start
b./usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
如何配置linux开机自启动？