nagios 安裝

系統要求
The only requirement of running Nagios is a machine running Linux (or UNIX variant) and a C compiler. You will probably also want to have TCP/IP configured, as most service checks will be performed over

系統要求
The only requirement of running Nagios is a machine running Linux (or UNIX variant) and a C compiler. You will probably also want to have TCP/IP configured, as most service checks will be performed over

the network.

You are not required to use the CGIs included with Nagios. However, if you do decide to use them, you will need to have the following software installed...

1。A web server (preferrably Apache)
2。Thomas Boutell's gd library version 1.6.3 or higher (required by the statusmap and trends CGIs)

軟件主頁：
http://www.nagios.org/

1.下載源碼包
wget http://nchc.dl.sourceforge.net/sourceforge/nagios/nagios-2.0b3.tar.gz
2.解壓源碼包
tar xfvz nagios-2.0b3.tar.gz
3.配置編譯
cd nagios-2.0b3
adduser nagios
mkdir /usr/local/nagios
chown nagios.nagios /usr/local/nagios
grep "^User" /usr/local/apache2/conf/httpd.conf
/usr/sbin/groupadd nagcmd
/usr/sbin/usermod -G nagcmd nobody
/usr/sbin/usermod -G nagcmd nagios
./configure --prefix=/usr/local/nagios --with-cgiurl=/nagios/cgi-bin --with-htmlurl=/nagios --with-nagios-usr=nagios --with-nagios-group=nagios --with-command-group=nagcmd --with-gd-lib -

-enable-embedded-perl --with-perlcache

make all
make install
make install-init
make install-commandmode
make install-config

 

安裝nagios-plugs

1.下載源碼包
wget http://nchc.dl.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.tar.gz
2.解壓源碼包
tar xfvz nagios-plugins-1.4.tar.gz
3.配置編譯
./configure --prefix=/usr/local/nagios --with-mysql --with-cgiurl
make
make install

配置apache

http.conf

ScriptAlias /nagios/cgi-bin "/usr/local/nagios/sbin"

    AllowOverride AuthConfig
    Options ExecCGI
    Order allow,deny
    Allow from all

Alias /nagios "/usr/local/nagios/share"

    Options None
    AllowOverride AuthConfig
    Order allow,deny
    Allow from all

 

 

Authorization In The CGIs
The second step is to create a file named .htaccess in the root your CGI directory (and optionally also you HTML directory) for Nagios (usually /usr/local/nagios/sbin and /usr/local/nagios/share, respectively).

The file(s) should have contents similiar to the following... :

cd /usr/local/nagios/sbin
vi .htaccess

AuthName "Nagios Access"
AuthType Basic
AuthUserFile /usr/local/nagios/etc/htpasswd.users
require valid-user

cd /usr/local/nagios/share
vi .htaccess

AuthName "Nagios Access"
AuthType Basic
AuthUserFile /usr/local/nagios/etc/htpasswd.users
require valid-user

 

Setting Up Authenticated Users:

htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin

格式：
htpasswd -c /usr/local/nagios/etc/htpasswd.users

Enabling Authentication/Authorization Functionality In The CGIs
The next thing you need to do is make sure that the CGIs are configured to use the authentication and authorization functionality in determining what information and/or commands users have access to. This is

done be setting the use_authentication variable in the CGI configuration file to a non-zero value. Example:

vi /usr/local/nagios/etc/cgi.cfg
use_authentication=1

 

/usr/local/apache2/bin/apachectl restart

配置文件

一. nagios.cfg
首先，剛裝好的nagios,在/usr/local/nagios/etc 下，文件都是以-sample結尾的，要把某些文件去掉-sample。
主配置文件 nagios.cfg
mv nagios.cfg--sample nagios.cfg
vi nagios.cfg
註釋這句話
#cfg_file=/usr/local/nagios/etc/minimal.cfg
在 # OBJECT CACHE FILE 這句話前面添加如下語句
cfg_dir=/usr/local/nagios/etc/hosts
cfg_dir=/usr/local/nagios/etc/contacts
cfg_dir=/usr/local/nagios/etc/services
cfg_dir=/usr/local/nagios/etc/commands

存盤退出

mkdir hosts
mkdir contacts
mkdir services
mkdir commands

這樣做，主要是爲了分類，管理方便。
有些cfg文件可以參照 bigger.cfg-sample，minimal.cfg-sample 這兩個文件

cd hosts
vi hosts.cfg

###############################################################################
###############################################################################
#
# HOSTS
#
###############################################################################
###############################################################################

# Generic host definition template - This is NOT a real host, just a template!

define host{
        name                            generic-host    ; The name of this host template
        notifications_enabled           1       ; Host notifications are enabled
        event_handler_enabled           1       ; Host event handler is enabled
        flap_detection_enabled          1       ; Flap detection is enabled
        failure_prediction_enabled      1       ; Failure prediction is enabled
        process_perf_data               1       ; Process performance data
        retain_status_information       1       ; Retain status information across program restarts
        retain_nonstatus_information    1       ; Retain non-status information across program restarts
        register                        0       ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL HOST, JUST A TEMPLATE!
        }

# Since this is a simple configuration file, we only monitor one host - the
# local host (this machine).

define host{
        use                     generic-host            ; Name of host template to use
        host_name               SH4
        alias                   SH4
        address                 192.168.168.244
        check_command           check-host-alive
        max_check_attempts      10
        notification_interval   120
        notification_period     24x7
        notification_options    d,r
        contact_groups  admins
        }
define host{
        use                     generic-host            ; Name of host template to use
        host_name               SH3
        alias                   SH3
        address                 192.168.168.243
        check_command           check-host-alive
        max_check_attempts      10
        notification_interval   120
        notification_period     24x7
        notification_options    d,r
        contact_groups  admins
        }

如果有很多服務器，可以把這些服務器分組

vi hostgroups.cfg

###############################################################################
###############################################################################
#
# HOST GROUPS
#
###############################################################################
###############################################################################

# We only have one host in our simple config file, so there is no need to
# create more than one hostgroup.

define hostgroup{
        hostgroup_name  test
        alias           Test Servers
        members         SH4, SH3
        }

cd /usr/local/nagios/etc/contacts
vi contacts.cfg

###############################################################################
###############################################################################
#
# CONTACTS
#
###############################################################################
###############################################################################

# In this simple config file, a single contact will receive all alerts.
# This assumes that you have an account (or email alias) called
# "nagios-admin" on the local host.

define contact{
        contact_name                    nagios-admin
        alias                           Nagios Admin
        service_notification_period     24x7
        host_notification_period        24x7
        service_notification_options    w,u,c,r
        host_notification_options       d,r
        service_notification_commands   notify-by-email
        host_notification_commands      host-notify-by-email
        email                           [email protected]
        }

vi contactgroups.cfg

###############################################################################
###############################################################################
#
# CONTACT GROUPS
#
###############################################################################
###############################################################################

# We only have one contact in this simple configuration file, so there is
# no need to create more than one contact group.

define contactgroup{
        contactgroup_name       admins
        alias                   Nagios Administrators
        members                 nagios-admin
        }

 

 

cd /usr/local/nagios/etc/services
vi services.cfg

###############################################################################
###############################################################################
#
# SERVICES
#
###############################################################################
###############################################################################

# Generic service definition template - This is NOT a real service, just a template!

define service{
        name                            generic-service ; The 'name' of this service template
        active_checks_enabled           1       ; Active service checks are enabled
        passive_checks_enabled          1       ; Passive service checks are enabled/accepted
        parallelize_check               1       ; Active service checks should be parallelized (disabling this can lead to major per
formance problems)
        obsess_over_service             1       ; We should obsess over this service (if necessary)
        check_freshness                 0       ; Default is to NOT check service 'freshness'
        notifications_enabled           1       ; Service notifications are enabled
        notification_options            w,u,c,r,f
        event_handler_enabled           1       ; Service event handler is enabled
        flap_detection_enabled          1       ; Flap detection is enabled
        failure_prediction_enabled      1       ; Failure prediction is enabled
        process_perf_data               1       ; Process performance data
        retain_status_information       1       ; Retain status information across program restarts
        retain_nonstatus_information    1       ; Retain non-status information across program restarts
        register                        0       ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL SERVICE, JUST A TEMPLATE!
        }

 

# Define a service to "ping" the  machine

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       ns1
        service_description             PING
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              4
        normal_check_interval           5
        retry_check_interval            1
        contact_groups                  admins
        notification_interval           5
        notification_period             24x7
        check_command                   check_ping!100.0,20%!500.0,60%
        }

# Define a service to detect "http"

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       ns1
        service_description             HTTP
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              4
        normal_check_interval           5
        retry_check_interval            1
        contact_groups                  admins
        notification_interval           5
        notification_period             24x7
        check_command                   check_http
        }

 

# Define a service to detect "ftp"

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       web01
        service_description             FTP
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              4
        normal_check_interval           5
        retry_check_interval            1
        contact_groups                  admins
        notification_interval           5
        notification_period             24x7
        check_command                   check_ftp
        }

# Define a service to detect "DNS"

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       ns1
        service_description             DNS
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              4
        normal_check_interval           5
        retry_check_interval            1
        contact_groups                  admins
        notification_interval           5
        notification_period             24x7
        check_command                   check_dns
        }

# Define a service to detect "SMTP"

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       web12
        service_description             SMTP
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              4
        normal_check_interval           5
        retry_check_interval            1
        contact_groups                  admins
        notification_interval           5
        notification_period             24x7
        check_command                   check_smtp
        }

# Define a service to detect "POP"

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       web12
        service_description             POP
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              4
        normal_check_interval           5
        retry_check_interval            1
        contact_groups                  admins
        notification_interval           5
        notification_period             24x7
        check_command                   check_pop
        }

# Define a service to detect "IMAP"

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       web12
        service_description             IMAP
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              4
        normal_check_interval           5
        retry_check_interval            1
        contact_groups                  admins
        notification_interval           5
        notification_period             24x7
        check_command                   check_imap
        }

# Define a service to detect "HTTPS"

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       web05
        service_description             HTTPS
        is_volatile                     0