nagios一键安装脚本
nagios具有非常强大的报警功能。还可以结合pnp实现时时绘制图形。可以根据自己的需求定义:nagios的脚控类型,可以说监控服务,nagios已经做到了无所不能:下面给出nagios的安装脚步。后期会慢慢更新如何编写脚步定义企业nagios监控系统:脚步的安装包是已经放到/usr/local/src目录下:
安装脚本。(LAMP环境已经安装好。)nagios最强大的就是开源功能,可以实现用编写nrpe脚本采集数据的方式进行监控报警,可以自己根据自己需求创建出一套自己的监控系统。
yum -y install httpd gcc gcc-c++ glibcglibc-common gd gd-devel
useradd nagios
groupadd nagcmd
usermod -G nagcmd nagios
usermod -G nagcmd apache
cd /usr/local/src
tar zxvf nagios-3.0.6.tar.gz
cd nagios-3.0.6
./configure --with-command-group=nagcmd--prefix=/usr/local/nagios
make all
make install
make install-init
make install-config
make install-commandmode
make install-webconf
cd ../
tar zxvf nagios-plugins-1.4.13.tar.gz
cd nagios-plugins-1.4.13
./configure --prefix=/usr/local/nagios--with-nagios-user=nagios --with-nagios-group=nagios
make && make install
cd ../
tar zxvf nrpe-2.13.tar.gz
cd nrpe-2.13
./configure
make all
make install-plugin
make install-daemon
make install-daemon-config
htpasswd -bc/usr/local/nagios/etc/htpasswd.users nagiosadmin
123456
echo "aliasnagioscheck='/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg'" >> /root/.bashrc
source /root/.bashrc
chkconfig nagios on
chkconfig httpd on
service httpd start
service nagios start
#基本安装过程这里就不重复了,htpasswd -bc这行代码的作用是不需要人为干预的生成密码名为123456的angiosadmin用户,而后期由于经常要修改/usr/local/nagios/etc/nagios.cfg配置文件,所以需要检测其语法,所以将其长命令生成名为nagioscheck的别名命令。
Nagios客户端自动安装脚本,如下所示:
useradd nagios
cd /usr/local/src
tar zxvf nagios-plugins-1.4.13.tar.gz
cd nagios-plugins-1.4.13
./configure
make
make install
chown nagios:nagios /usr/local/nagios
chown -R nagios:nagios/usr/local/nagios/libexec
cd ../
tar zxvf nrpe-2.13.tar.gz
cd nrpe-2.13
./configure
make all
make install-plugin
make install-daemon
make install-daemon-config
/usr/local/nagios/bin/nrpe -c/usr/local/nagios/etc/nrpe.cfg -d
echo "/usr/local/nagios/bin/nrpe -c/usr/local/nagios/etc/nrpe.cfg -d" >> /etc/rc.local
nagios:服务器端中文插件安装:
5、安装Nagios中文化插件
中文插件下载地址:
http://sourceforge.net/projects/nagios-cn/files/
下载对应nagios版本的中文插件,然后开始安装:
[root@localhost ~]#tar xvfznagios-cn-3.2.0.tar.bz2
[root@localhost nagios-cn-3.2.0]#cdnagios-cn-3.2.0
[root@localhost nagios-cn-3.2.0]#./configure
[root@localhost nagios-cn-3.2.0]#make all
[root@localhost nagios-cn-3.2.0]#make install
注:安装中文插件的适合很容易出乱码。一般通过添加apache的utf8支持可以完成
<Directory />
AddDefaultCharset UTF-8 #加入格式支持
</Directory>
开启cgi模块:
LoadModule cgid_module modules/mod_cgid.so
LoadModule actions_modulemodules/mod_actions.so
重起apache
监控MySQL有两种方法,一种是通过官方的check_mysql插件,另一种是通过第三方的check_mysql_health的插件。check_mysql_health的功能更为强大一些,这里我两种都简单的说下。
第一种方法:使用nagios-plugins 官方自带的chech_mysql插件
监控mysql可能在nagios服务器上没有官方的mysql的检测的插件。
需要先yum install mysql-devel
然后在重新编译安装一次nagios-plugins插件
查看现在已经有了
[root@c65mini ~]# ll /usr/local/nagios/libexec/check_mysql-rwxr-xr-x 1 nagios nagios 190768 10月 8 14:02 /usr/local/nagios/libexec/check_mysql
登陆进命令行模式
mysql -uroot -p
在被监控的远程服务器上(mysql服务器上)要先创建一个可以远程登陆mysql服务器的账号
GRANT ALL PRIVILEGES ON *.* TO 'nagios'@'192.168.163.129' IDENTIFIED BY 'nagios';
查看用户已经有了nagios用户
select user,host from mysql.user;
在监控主机上添加命令,需要修改commands.cfg
vim /usr/local/nagios/etc/objects/commands.cfg#check mysqldefine command{command_name check_mysqlcommand_line $USER1$/check_mysql -H $HOSTADDRESS$ -P $ARG1$ -u $ARG2$ -p $ARG3$}
在监控主机上添加监控的服务
define service{use generic-service,srv-pnphost_name mysql-master-1service_description MYSQLcheck_command check_mysql!3306!nagios!nagiosnotifications_enabled 1}
测试下nagios的配置是否有错误
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
没问题重启nagios服务
/etc/init.d/nagios restart
第二种方法:check_mysql_health插件比起官方的check_mysql插件功能更为强大,check_mysql_health不但能监控MySQL是否正常运行,还能监控MySQL主从、MySQL连接数情况、MySQL慢查询等多种监控指标。
check_mysql_health官方介绍主页:http://labs.consol.de/nagios/check_mysql_health/
安装check_mysql_health插件
wget http://labs.consol.de/download/shinken-nagios-plugins/check_mysql_health-2.1.8.2.tar.gztar zxvf check_mysql_health-2.1.8.2.tar.gzcd check_mysql_health-2.1.8.2./configuremakemake install
check_mysql_health插件基本用法
/usr/local/nagios/libexec/check_mysql_health --hostname 192.168.163.130 --port 3306 --username nagios --password nagios --mode slow-queries
各参数的含义,尤其–mode参数有很多监控的指标可以参考,具体查看官网可以知。
--hostname 定义被监控主机的IP或机器名--port 定义被监控主机上MySQL的运行端口--username 定义被监控主机上MySQL的用户名--password 定义被监控主机上MySQL的密码--mode 定义被监控主机上MySQL的监控指标
和官方插件类似,首先要建立一个可以用于远程登陆的mysql账号
GRANT ALL PRIVILEGES ON *.* TO 'nagios'@'192.168.163.130' IDENTIFIED BY 'nagios';
在监控主机上添加可以让命令以便让监控主机识别这个插件。
vi /usr/local/nagios/etc/objects/commands.cfgdefine command{ command_name check_mysql_health command_line $USER1$/check_mysql_health --hostname $ARG1$ --port $ARG2$ --username $ARG3$ --password $ARG4$ --mode $ARG5$ }
在监控主机上添加要监控的服务
监控MySQL连接时间define service{use generic-service ; Name of service template to usehost_name mysql-master-1service_description check_mysql_connection_timecheck_command check_mysql_health!192.168.163.130!3306!nagios!nagios!connection-timenotifications_enabled 1};监控MySQL连接数define service{use generic-service ; Name of service template to usehost_name mysql-master-1service_description check_mysql_threads_connectedcheck_command check_mysql_health!192.168.163.130!3306!nagios!nagios!threads-connectednotifications_enabled 1};监控MySQL慢查询情况define service{use generic-service ; Name of service template to usehost_name mysql-master-1service_description check_mysql_slow_queriescheck_command check_mysql_health!192.168.163.130!3306!nagios!nagios!slow-queriesnotifications_enabled 1};监控MySQL锁表情况define service{use generic-service ; Name of service template to usehost_name mysql-master-1service_description check_mysql_table_lock_contentioncheck_command check_mysql_health!192.168.163.130!3306!nagios!nagios!table-lock-contentionnotifications_enabled 1}
如果web面板可能提示错误:
CRITICAL – statefilesdir /var/tmp/check_mysql_health does not exist or is not writable
可能和权限关系或者/var/temp下没有这个check_mysql_health
查看下check_mysql_health的权限所属。
[root@c65mini ~]# ll /usr/local/nagios/libexec/check_mysql_health -rwxr-xr-x 1 root root 122024 10月 9 15:57 /usr/local/nagios/libexec/check_mysql_health
插件的权限应该所属nagios用户和组,因此修改之。
chown nagios:nagios /usr/local/nagios/libexec/check_mysql_health
软链接一个
ln -s /usr/local/nagios/libexec/check_mysql_health /var/tmp/check_mysql_health