nagios服务器和客户端设置

配置Nagios服务器并实现本地监控

一、需要安装的软件：

nagios-3.3.1.tar.gz

nagios-plugins-1.4.15.tar.gz

nrpe-2.12.tar.gz

注：需要使用到APACHE服务，如果需要本地数据库需要安装mysql-devel库,可使用以下命令

#yum -y install mysql-devel

注:需要创建mysql数据库和用户

进入MYSQL

后使用以下命令

create database nagdb;

grant select on nagdb.* to 'nagios'@'%';

二、安装配置Nagios和Nagios-plugins：

1.首先在Apache配置文件httpd.conf中的最下方添加如下字段：

ScriptAlias /nagios/cgi-bin /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

Require valid-user

Alias /nagios /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

2.增加帐号：nagios

# useradd nagios -s /sbin/nologin

3.安装Nagios软件

# nagios-3.3.1.tar.gz

# cd ./nagios

# ./configure --prefix=/usr/local/nagios --with-nagios-user=nagios --with-nagios-group=nagios make all

make install

make install-commandmode

make install-config

安装完成后使用LL命令查看是否有以下文件

[root@localhost nagios]# ll /usr/local/nagios/

总计48

drwxrwxr-x 2 nagios nagios 4096 10-11 09:41 bin

drwxrwxr-x 3 nagios nagios 4096 10-11 09:43 etc

drwxrwxr-x 2 nagios nagios 4096 10-11 09:41 libexec

drwxrwxr-x 2 nagios nagios 4096 10-11 09:41 sbin

drwxrwxr-x 9 nagios nagios 4096 10-11 09:41 share

drwxrwxr-x 5 nagios nagios 4096 10-11 09:43 var

4.安装Nagios插件

# tar zxvf nagios-plugins-1.4.15.tar.gz

# cd ./nagios-plugins-1.4.15

# ./configure --prefix=/usr/local/nagios --with-mysql=/usr/local/mysql

# make && make install

安装完成后在libexec中有如下插件

[root@localhost nagios-plugins-1.4.15]# ls /usr/local/nagios/libexec/

check_apt check_ide_smart check_nntp check_smtp

check_breeze check_ifoperstatus check_nntps check_spop

check_by_ssh check_ifstatus check_nt check_ssh

check_clamd check_imap check_ntp check_ssmtp

check_cluster check_ircd check_ntp_peer check_swap

check_dhcp check_jabber check_ntp_time check_tcp

check_dig check_ldap check_nwstat check_time

check_disk check_ldaps check_oracle check_udp

check_disk_smb check_load check_overcr check_ups

check_dns check_log check_ping check_users

check_dummy check_mailq check_pop check_wave

check_file_age check_mrtg check_procs negate

check_flexlm check_mrtgtraf check_real urlize

check_ftp check_mysql check_rpc utils.pm

check_http check_mysql_query check_sensors utils.sh

check_icmp check_nagios check_simap

5.置Nagios文件

#vim /usr/local/nagios/etc/nagios.cfg

列举所需要修改的文件：

nagios.cfg、cgi.cfg、commands.cfg

所需要自行创建的文件：

contactgroups.cfg、contacts.cfg、hostgroups.cfg、hosts.cfg、services.cfg 首先配置nagios.cfg

注释或删掉这行

# cfg_file=/usr/local/nagios/etc/objects/localhost.cfg

主机配置文件路径

cfg_file=/usr/local/nagios/etc/hosts.cfg

主机组配置文件路径

cfg_file=/usr/local/nagios/etc/hostgroups.cfg

联系人配置文件路径

cfg_file=/usr/local/nagios/etc/contacts.cfg

联系组配置文件路径

cfg_file=/usr/local/nagios/etc/contactgroups.cfg

服务配置文件路径

cfg_file=/usr/local/nagios/etc/services.cfg

监视时段配置文件路径

cfg_file=/usr/local/nagios/etc/timeperiods.cfg

检查命令配置文件路径

cfg_file=/usr/local/nagios/etc/commands.cfg

在WEB五重启Nagios、停机/服务检查等操作，默认值是0

check_external_commands=1

检查时间间隔，默认值是1秒

command_check_interval=10s

可直接复制以下内容：

cfg_file=/usr/local/nagios/etc/hosts.cfg

cfg_file=/usr/local/nagios/etc/hostgroups.cfg

cfg_file=/usr/local/nagios/etc/contacts.cfg

cfg_file=/usr/local/nagios/etc/contactgroups.cfg

cfg_file=/usr/local/nagios/etc/services.cfg

cfg_file=/usr/local/nagios/etc/timeperiods.cfg

cfg_file=/usr/local/nagios/etc/commands.cfg

6.配置cgi.cfg文件

需要修改的地方如下，如有多个用户，中间用逗号隔开

authorized_for_system_information=nagios

authorized_for_configuration_information=nagios

authorized_for_system_commands=nagios

authorized_for_all_services=nagiosadmin,nogios

authorized_for_all_hosts=nagios

authorized_for_all_service_commands=nagios

authorized_for_all_host_commands=nagios

注：此处设定的用户“nagios”可以通过浏览器操纵nagios服务的关闭、重启等各种操作7.修改commands.cfg配置文件

修改notify-host-by-email --> host-notify-by-email

修改notify-service-by-email --> service-notify-by-email

# 'check_nrpe' command definition

define command {

command_name check_nrpe

command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$

}

###### host-notify-by-sms command definition

#define command {

# command_name host-notify-by-sms

# command_line /usr/local/bin/sms.pl $CONTACTPAGER$

# "$NOTIFICATIONTYPE$ alert - Host $HOSTNAME$ is $HOSTSTATE$"

#}

###### service-notify-by-sms command definition

#define command {

# command_name service-notify-by-sms

# command_line /usr/local/bin/sms.pl $CONTACTPAGER$

#"$HOTIFICATIONTYPE$: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$"

# }

#'check_mysql' command definition

define command {

command_name check_mysql

command_line $USER1$/check_mysql -H $HOSTADDRESS$ -u nagios -d nagdb

}

注释掉的部分为使用脚本发送短消息的部分

8.配置hosts.cfg文件

使用vim新建文件并输入以下内容：

define host {

host_name nagios-server

alias nagios server

address 192.168.75.128

contact_groups sagroup

check_command check-host-alive

max_check_attempts 5

notification_interval 10

notification_period 24x7

notification_options d,u,r

}

注释内容：:

define host {

host_name nagios-server

alias nagios server

address 192.168.75.128 ==>填写主机IP地址

contact_groups sagroup ==>联系组目前还未建立，稍后进行创建check_command check-host-alive

max_check_attempts 5 ==>最大尝试次数

notification_interval 10 ==>通知间隔此为10分钟1次notification_period 24x7 ==>通知周期此为全天工作

notification_options d,u,r ==>d=down、u=unreacheable、r=recovery }

9.配置hostgroups.cfg

define hostgroup {

hostgroup_name sa-servers

alias sa servers

members nagios-server

}

主机组成员必须是在hosts.cfg中定义的，多个主机成员间用逗号分隔10.定义联系人配置文件contacts.cfg

define contact {

contact_name nagios

alias system administrator

service_notification_period 24x7

host_notification_period 24x7

service_notification_options w,u,c,r

host_notification_options d,u,r

service_notification_commands service-notify-by-email

host_notification_commands host-notify-by-email

email gangdan0083@https://www.360docs.net/doc/0610920067.html,

}

注释内容

define contact{

contact_name nagios ==>联系人

alias system administrator

service_notification_period 24x7

host_notification_period 24x7

service_notification_options w,u,c,r ==>服务通知：w=warning、u=unknow、c=critical、r=recovery

host_notification_options d,u,r ==>主机通知：d=down、u=unreacheable、r=recovery 下面2行在配置文件commands.cfg中定义的，如有报警发生，则邮件和手机短信一直发送给相关人，即正面行定义的email和pager

service_notification_commands service-notify-by-email,service-notify-by-sms

host_notification_commands host-notify-by-email,host-notify-by-sms

email gangdan0083@https://www.360docs.net/doc/0610920067.html,

pager 12345678901

}

11.定义联系组配置文件contactgroups.cfg

define contactgroup {

contactgroup_name sagroup

alias system administrator group

members nagios

}

注：当有多个人行使同样的职责时，定义成组是非常有用的。

多个成员之间用逗号分隔

成员必须在联系人配置文件contacts.cfg中已经定义

12.定义服务配置文件services.cfg

define service {

host_name nagios-server

service_description check-host-alive

check_period 24x7

max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

contact_groups sagroup

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

check_command check-host-alive

}

define service {

host_name nagios-server

service_description check_tcp 80

check_period 24x7

max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

contact_groups sagroup

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

check_command check_tcp!80

}

define service {

host_name nagios-server

service_description check-disk

check_command check_nrpe!check_disk

max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

check_period 24x7

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

contact_groups sagroup

}

define service {

host_name nagios-server

service_description check-load

check_command check_nrpe!check_load

max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

check_period 24x7

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

contact_groups sagroup

}

define service {

host_name nagios-server

service_description total_procs

check_command check_nrpe!check_total_procs

max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

check_period 24x7

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

contact_groups sagroup

}

define service {

host_name nagios-server

service_description mysql

check_command check_mysql!192.168.184.144!3306!nagios

max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

check_period 24x7

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

contact_groups sagroup

}

注：主机名host_name必须是主机配置文件hosts.cfg中定义的主机

检查用的命令check_command要在命令配置文件中定义或在nrpe配置文件中有定义最大重试次数max_check_attempts 一般设置为3~4次比较好

三、部署Nrpe

1.安装nrpe

# tar zxvf nrpe-2.12.tar.gz

# cd ./nrpe-2.12

# ./configure --prefix=/usr/local/nrpe

make && make install

2.复制文件

cp /usr/local/nrpe/libexec/check_nrpe /usr/local/nagios/libexec

cp /usr/local/nagios/libexec/check_disk /usr/local/nrpe/libexec

cp /usr/local/nagios/libexec/check_load /usr/local/nrpe/libexec

cp /usr/local/nagios/libexec/check_ping /usr/local/nrpe/libexec

cp /usr/local/nagios/libexec/check_procs /usr/local/nrpe/libexec

cp /usr/local/nagios/libexec/check_mysql /usr/local/nrpe/libexec

3.配置NRPE

创建新目录：

# mkdir /usr/local/nrpe/etc

复制配置文件

# cp /nrpe-2.12/sample-config/nrpe.cfg /usr/local/nrpe/etc

修改配置文件：

server_address=192.168.75.128

allowed_hosts=127.0.0.1,192.168.75.128

command[check_users]=/usr/local/nrpe/libexec/check_users -w 5 -c 10

command[check_load]=/usr/local/nrpe/libexec/check_load -w 15,10,5 -c 30,25,20

#command[check_hda1]=/usr/local/nrpe/libexec/check_disk -w 20% -c 10% -p /dev/hda1 command[check_zombie_procs]=/usr/local/nrpe/libexec/check_procs -w 5 -c 10 -s Z command[check_total_procs]=/usr/local/nrpe/libexec/check_procs -w 150 -c 200

command[check_disk]=/usr/local/nrpe/libexec/check_disk -w 20 -c 10 -p

4.启动NRPE服务并检验其配置

启动服务：

# /usr/local/nrpe/bin/nrpe -c /usr/local/nrpe/etc/nrpe.cfg -d

检查NRPE服务：

# libexec/check_nrpe -H 主机名

检查主机资源：

# libexec/check_nrpe -H 主机名-c check_disk

四、启动nagios服务：

1.检查配置是否正确

# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

2.启动nagios

# /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

3.创建WEB验证用户

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

五、启动APACHE

1.上面的步骤都成功之后重新启动APACHE服务后在WEB中输入//HOST/nagios后提示密码输入，输入用户名和密码后进入Nagios界面，实验成功，完成对本机的

监控操作，并具有发送EMAIL的功能

查看nagios进程

ps aux|grep nrpe|grep -v grep

注：如果在check_disk中显示黄色并报Unknown argument 错误的话，建议重新KILL nagios 进程再启动服务，或者重启主机后再启动服务问题解决。

监控第2台主机

一、需要安装的软件：

nagios-plugins-1.4.15.tar.gz

nrpe-2.12.tar.gz

注：如果需要本地数据库需要安装mysql-devel库,可使用以下命令

#yum -y install mysql-devel

注:需要创建mysql数据库和用户

进入MYSQL

后使用以下命令

create database nagdb;

grant select on nagdb.* to 'nagios'@'%';

添加系统用户nagios

useradd nagios -s /sbin/nologin

安装Nagios插件

# tar zxvf nagios-plugins-1.4.15.tar.gz

# cd ./nagios-plugins-1.4.15

# ./configure --prefix=/usr/local/nagios --with-mysql=/usr/local/mysql

# make && make install

安装Nrpe

1.安装nrpe

# tar zxvf nrpe-2.12.tar.gz

# cd ./nrpe-2.12

# ./configure --prefix=/usr/local/nrpe

make && make install

复制所需要的插件到/usr/local/nrpe/libexec/

例如：

cp /usr/local/nagios/libexec/check_disk /usr/local/nrpe/libexec

cp /usr/local/nagios/libexec/check_load /usr/local/nrpe/libexec

cp /usr/local/nagios/libexec/check_ping /usr/local/nrpe/libexec

cp /usr/local/nagios/libexec/check_procs /usr/local/nrpe/libexec

cp /usr/local/nagios/libexec/check_mysql /usr/local/nrpe/libexec

修改配置文件：

server_address=192.168.75.128

allowed_hosts=127.0.0.1,192.168.75.128

command[check_users]=/usr/local/nrpe/libexec/check_users -w 5 -c 10

command[check_load]=/usr/local/nrpe/libexec/check_load -w 15,10,5 -c 30,25,20

#command[check_hda1]=/usr/local/nrpe/libexec/check_disk -w 20% -c 10% -p /dev/hda1 command[check_zombie_procs]=/usr/local/nrpe/libexec/check_procs -w 5 -c 10 -s Z command[check_total_procs]=/usr/local/nrpe/libexec/check_procs -w 150 -c 200 command[check_disk]=/usr/local/nrpe/libexec/check_disk -w 20 -c 10 -p

切换nagios服务器

进行如下设置

配置hosts.cfg文件

使用vim添加以下内容：

define host {

host_name nagios-server2

alias nagios server2

address 192.168.75.136

contact_groups sagroup

check_command check-host-alive

max_check_attempts 5

notification_interval 10

notification_period 24x7

notification_options d,u,r

}

配置hostgroups.cfg文件

将以下内容：

define hostgroup {

hostgroup_name sa-servers

alias sa servers

members nagios-server

}

更改为：

define hostgroup {

hostgroup_name sa-servers

alias sa servers

members nagios-server,nagios-server2

}

配置contacts.cfg

添加以下内容：

define contact {

contact_name nagios2

alias system administrator

service_notification_period 24x7

host_notification_period 24x7

service_notification_options w,u,c,r

host_notification_options d,u,r

service_notification_commands service-notify-by-email host_notification_commands host-notify-by-email email gangdan0083@https://www.360docs.net/doc/0610920067.html,

}

配置contactgroups.cfg文件

将以下内容：

define contactgroup {

contactgroup_name sagroup

alias system administrator group members nagios

}

更改为：

define contactgroup {

contactgroup_name sagroup

alias system administrator group members nagios,nagios2

}

配置services.cfg文件

将内容更改为以下：

define service {

host_name nagios-server,nagios-server2 service_description check-host-alive check_period 24x7

max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

contact_groups sagroup

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

check_command check-host-alive

}

define service {

host_name nagios-server,nagios-server2 service_description check_tcp 80 check_period 24x7

max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

contact_groups sagroup

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

check_command check_tcp!80

}

define service {

host_name nagios-server,nagios-server2 service_description check-disk

check_command check_nrpe!check_disk

max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

check_period 24x7

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

contact_groups sagroup

}

define service {

host_name nagios-server,nagios-server2 service_description check-load

check_command check_nrpe!check_load

max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

check_period 24x7

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

contact_groups sagroup

}

define service {

host_name nagios-server,nagios-server2 service_description total_procs

check_command check_nrpe!check_total_procs max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

check_period 24x7

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

contact_groups sagroup

}

define service {

host_name nagios-server,

service_description mysql

check_command check_mysql!192.168.75.128!3306!nagios

max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

check_period 24x7

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

contact_groups sagroup

}

define service {

host_name nagios-server2,

service_description mysql

check_command check_mysql!192.168.75.136!3306!nagios

max_check_attempts 4

normal_check_interval 3

retry_check_interval 2

check_period 24x7

notification_interval 10

notification_period 24x7

notification_options w,u,c,r

contact_groups sagroup

}

注：如果TCP_80 服务报拒绝连接，请开启APACHE服务，此问题解决