RHEL6 Nagios 部署+fetion整合
RHEL6 Nagios 部署
系统环境:RHEL6 x86_64 selinux and iptables disabled
nagios 主机:192.168.0.5
mysql 主机: 192.168.0.1
一，监控本机
安装所需要软件
yum install httpd gcc make perl-ExtUtils-Embed.x86_64 -y
rpm -ivh gd-devel-2.0.35-10.el6.x86_64.rpm
useradd nagios
运行 nagios 服务的用户
usermod -G nagios apache
使 apache 用户对 nagios 目录具有写权限,不然 web 页面操作失败
tar jxf nagios-cn-3.2.3.tar.bz2
解压nagios
cd nagios-cn-3.2.3
./configure –-enable-embedded-perl 编译
make all
make install
make install-init
make install-commandmode
make install-config
make install-webconf
yum install mysql-devel openssl-devel -y 编译所需软件包
tar zxf nagios-plugins-1.4.15.tar.gz
nagios 插件安装
cd nagios-plugins-1.4.15
./configure —with-nagios-user=nagios —with-nagios-group=nagios
--enable-extra-opts —enable-libtap —enable-perl-modules
Make && make install
vi /usr/local/nagios/etc/nagios.cfg
#nagios配置
cfg_file=/usr/local/nagios/etc/objects/hosts.cfg #新建 hosts.cfg 文件,存放主机与主机组定义
cfg_file=/usr/local/nagios/etc/objects/services.cfg #新建 services.cfg 文件,存放服务与服务组定义
#cfg_file=/usr/local/nagios/etc/objects/localhost.cfg#注释 localhost.cfg 文件
如下图：
cp -r localhost.cfg hosts.cfg
vi /usr/local/nagios/etc/objects/hosts.cfg
去掉service部分，只留下想要的的hosts部分
define host{
use linux-server ; 给网络设备用的
host_name Desktop5
alias nagios
address 192.168.0.5
2d_coords 100,200
3d_coords 100,200,100
}
define hostgroup{
hostgroup_name linux-servers ; The name of the hostgroup
alias Linux Servers ; Long name of the group
members * ; Comma separated list of hosts that belong to this group
}
如下图：
cp -r localhost.cfg services.cfg
vi /usr/local/nagios/etc/objects/services.cfg
去掉hosts部分，只留下想要的的service部分
define servicegroup{
servicegroup_name 系统负荷检查
alias 负荷检查
members Desktop5,进程总数,Desktop5,登录用户数,Desktop5,根分区,Desktop5,交换空间利用率
}
define servicegroup{
servicegroup_name 全部联通性检查
alias 联通性检查
members Desktop5,PING
}
define service{
use local-service
host_name *
service_description PING
check_command check_ping!100.0,20%!500.0,60%
}
define service{
use
local-service
host_name Desktop5
service_description 根分区
check_command check_local_disk!20%!10%!/
}
define service{
use local-service
host_name Desktop5
service_description 进程总数
check_command check_local_procs!250!400!RSZDT
}
define service{
use local-service
host_name Desktop5
service_description 系统负荷
check_command
check_local_load!5.0,4.0,3.0!10.0,6.0,4.0
}
define service{
use local-service
host_name Desktop5
service_description SSH
check_command check_tcp!22!1.0!10.0
notifications_enabled 0
}
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
检测语法的正确性
/etc/init.d/httpd restart
/etc/init.d/nagios restart
htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin #nagios 监控页面访问用户和密码
就能访问http://192.168.0.5/nagio
二．监控另外一台机器的数据库（mysql)
Yum install mysql* -y
/etc/init.d/mysql restart
Mysql
mysql>create database nagdb;
创建用户
mysql> grant select on nagdb.* to
nagdb@'192.168.0.5'; 使其具有查看权限
mysql> flush privileges;
刷新数库
在nagios服务器中查看是否能够链接到mysql主机/usr/local/nagios/libexec
/usr/local/nagios/libexec/check_mysql -H 192.168.0.1 -u nagdb -d nagdb
在 nagios 主机上添加对 mysql 服务监控的定义
vi /usr/local/nagios/etc/objects/commands.cfg
（添加如下行）
define command{
command_name check_mysql
command_line $USER1$/check_mysql -H $HOSTADRESS$ -u nagdb -d nagdb
}
vi /usr/local/nagios/etc/objects/hosts.cfg
(添加如下行)
define host{
use linux-server
host_name mysql服务器
alias Desktop1
address 192.168.0.1
2d_coords 500,200
3d_coords 500,200,100
}
vi /usr/local/nagios/etc/objects/services.cfg （添加如下行）
define service{
use local-service
host_name mysql服务器
check_command check_mysql
}
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
/etc/init.d/httpd restart
/etc/init.d/ngios restart
就能访问http://192.168.0.5/nagio
三．Nagios 通过 NRPE 监控远程主机系统状况
远程主机设定
useradd nagios
tar xzf nagios-plugins-1.4.15.tar.gz
cd nagios-plugins-1.4.15
./configure —with-nagios-user=nagios --with-nagios-group=nagios --enable-extra-opts --enable-perl-modules —with-openssl --enable-libtap
make
make install
yum install xinetd -y
tar zxf nrpe-2.12.tar.gz
cd nrpe-2.12
./configure
make all
make install-plugin
make install-daemon
make install-daemon-config
make install-xinetd
vi /etc/xinetd.d/nrpe 修改如下行
only_from= 192.168.0.5
#nagios 主机 ip 地址
vi /etc/services
添加如下行
nrpe
5666/tcp nrpe务监听端口
vi /usr/local/nagios/etc/nrpe.cfg
修改如下行
command[check_disk]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /
#根分区监测
service xinetd restart
netstat -antlp |grep 5666
tcp 0 0 :::5666
#看到如下输出说明 NRPE 正常启动,并确保防火墙允许此端口
:::*
LISTEN
26359/xinetd
监控主机设定
tar zxf nrpe-2.12.tar.gz
cd nrpe-2.12
./configure --with-nagios-user=nagios --with-nagios-group=nagios
make all
make install-plugin
/usr/local/nagios/libexec/check_nrpe -H 192.168.0.1
NRPE v2.12
#如看到如下输出说明连接正常
vi /usr/local/nagios/etc/objects/commands.cfg 添加如下行
define command{
command_name
check_nrpe
command_line
$USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
}
vi /usr/local/nagios/etc/objects/services.cfg 添加如下行
define service{
use local-service
host_name mysql服务器
check_command check_mysql
service_description mysql服务
}
define service{
use generic-service
host_name mysql服务器
service_description CPU 使用率
check_command check_nrpe!check_load
}
define service{
use generic-service
host_name mysql服务器
service_description 登录用户数量
check_command check_nrpe!check_users
}
define service{
use generic-service
host_name
mysql服务器
service_description
根使用率
check_command
check_nrpe!check_disk
}
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
service nagios reload
#检测无误后重载 nagios
Nagios 整合飞信
http://www.it-adv.net/ 下载 fetion 主程序与支持库
步骤
（1）IP：192.168.0.85：
cd ~
lftp 127.0.0.1
cd /pub/docs/nagios
get fetion cenos54X64_20101113.rar
cd /pub/docs
get rarlinux-3.8.0.tar.gz
（1）IP：192.168.0.85：
cd ~
lftp 127.0.0.1
cd /pub/docs/nagios
get fetion cenos54X64_20101113.rar
cd /pub/docs
get rarlinux-3.8.0.tar.gz
|
|
cp fetion /usr/local/nagios/libexec
cd /usr/local/nagios/libexec
chmod +x fetion
chown nagios.nagios fetion
(2)执行 /usr/local/nagios/libexec/fetion
出现没有/lib/ld-linux.so
yum install /lib/ld-linux.so.2 -y
cd /usr/local/nagios/libexec/
./fetion
cd ~
tar zxf rarlinux-3.8.0.tar.gz -C /opt/
cd /opt/rar/unrar
/opt/rar/unrar x cenos54X64_20101113.rar(可能会出错，需要安装以下的包，然后重新执行此步。)yum install libstdc++.so.6
（3） cd ~
lftp 192.168.0.254
cd /pub/docs/nagios
get linuxso_20111113.tar.gz
tar zxf linuxso_20111113.tar.gz -C /usr/local/lib(将库文件放到/usr/local/ib中。ldconfig /usr/local/lib使其生效。)
cd /usr/local/lib
ls 会有4个so文件。
chmod +x *
需要的时候可能需要安装： yum install libgssapi_krb5.so.2 libz.so.1 zlib文件。
ldconfig /usr/local/lib
/usr/local/nagios/libexec/fetion 7执行成功。
（4）vi /etc/ld.so.conf.d/mysql-x86_64.conf
/usr/lib64/mysql
(5) vi fetion.conf
/usr/local/lib
ldconfig
(6) su - nagios
/usr/local/nagios/libexec/fetion --mobile=158029XXXXX --pwd=XXXXXX(飞信密码) --to=15802955XXXX --msg-utf8="hello"
然后你去/usr/local/nagios/libexec找到1509154xxxx.jpg,然后将其复制到桌面，查看其验证码，然后写上去，你就会在1509154xxxx收到一个由mobile=1509154xxxx发来的信息哦！）
你第一次用验证码，第二次就不用验证码。
实验五：
fetion 与 nagios 配置
步骤（1）cd /usr/local/nagios/libexec/
vi fetion.sh
/usr/local/nagios/libexec/fetion --mobile=158029XXXXX --pwd=qqXXXXX --to="$1" --msg-utf8="$2" > /dev/null
(2) chmod +x fetion.sh
chown ngios.nagios fetion.sh
su - nagios
cd /usr/local/nagios/libexec/
./fetion.sh 1509154xxxx "hello" (测试给1509154xxxx发送小心“hello“)
此时因为你重新调用的程序，需要重新找到验证码并输入.....
然后就可以收到信息喽......
(3) cd /usr/local/nagios/etc/objects/
vi templates.cfg
Generic contact definition template - This is NOT a real contact, just a template!
define contact{
name generic-contact ; The name of this contact template
.
.
.
service_notification_commands notify-service-by-email,notify-service-by-fetion ; send service notifications via email
host_notification_commands notify-host-by-email,notify-host-by-fetion ; send host notifications via email
..........................
}
(4) vi /usr/local/nagios/etc/objects/commands.cfg
增加以下内容：
# 'notify-host-by-fetion' command definition
define command{
command_name notify-host-by-fetion
command_line $USER1$/fetion.sh $CONTACTPAGER$ "$NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$"
}
name generic-contact ; The name of this contact template
.
.
.
service_notification_commands notify-service-by-email,notify-service-by-fetion ; send service notifications via email
host_notification_commands notify-host-by-email,notify-host-by-fetion ; send host notifications via email
..........................
}
(4) vi /usr/local/nagios/etc/objects/commands.cfg
增加以下内容：
# 'notify-host-by-fetion' command definition
define command{
command_name notify-host-by-fetion
command_line $USER1$/fetion.sh $CONTACTPAGER$ "$NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$"
}
# 'notify-service-by-fetion' command definition
define command{
command_name notify-service-by-fetion
command_line $USER1$/fetion.sh $CONTACTPAGER$ "$NOTIFICATIONTYPE$: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$"
}
（5）vi /usr/local/nagios/etc/objects/contacts.cfg
define contact{
.
.
.
email [email protected] ; <<***** CHANGE THIS TO YOUR EMAIL ADDRESS ******
pager 1509154xxxx(接收飞信信息的 手机号码
)
}
（6）测试：
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
#校验后重新载入 nagios 配置
/etc/init.d/nagios reload
此时你若把被监控端的： service mysqld stop此时会产生报警。然后下次检测的时候你的 手机和邮箱会同时收到邮件和信息哦。。
本文出自 “罗宁的技术生活” 博客，谢绝转载！