nagiosでフリーな監視をしてみよう!~nagiosの設定(3)~

この記事は2015年1月13日に書かれたものです。内容が古い可能性がありますのでご注意ください。



(3)Apacheの起動ユーザapacheがNagiosを再起動できるようにsudoersを編集します。

# visudo


・sudo設定変更前の内容

 ## Allows members of the users group to shutdown this system
 # %users  localhost=/sbin/shutdown -h now

 ## Read drop-in files from /etc/sudoers.d (the # here does not mean a comment)
 #includedir /etc/sudoers.d


・sudo設定変更後の内容

 ## Allows members of the users group to shutdown this system
 # %users  localhost=/sbin/shutdown -h now

 ## Read drop-in files from /etc/sudoers.d (the # here does not mean a comment)
 #includedir /etc/sudoers.d
 apache ALL=(ALL) NOPASSWD: /etc/rc.d/init.d/nagios reload


(4)nconfが生成した設定ファイルをNagiosの設定ファイルディレクトリ(cd /usr/local/nagios/etc)に配置できるように設定します。

# cd /usr/local/nagios/etc
# mkdir Default_collector global
# chown apache. Default_collector global nagios.cfg


(5)nconfからnagios.cfgを編集・配置することもできるので、念のため、nconfのディレクトリ配下に「nagios.cfg」をコピーします。

# cp /usr/local/nagios/etc/nagios.cfg /usr/local/apache2/htdocs/nconf/static_cfg/
# chown -R apache. /usr/local/apache2/htdocs/nconf/static_cfg/


(6)nconfが配置するファイルを設定ファイルとして使用するように、コピーした先の「/usr/local/apache2/htdocs/nconf/static_cfg/nagios.cfg」を編集します。

# vi /usr/local/apache2/htdocs/nconf/static_cfg/nagios.cfg


・「nagios.cfg」ファイル変更前の内容
※cfg_fileとcfg_dirを全てコメントアウトします。

 # You can specify individual object config files as shown below:
 cfg_file=/usr/local/nagios/etc/objects/commands.cfg
 cfg_file=/usr/local/nagios/etc/objects/contacts.cfg
 cfg_file=/usr/local/nagios/etc/objects/timeperiods.cfg
 cfg_file=/usr/local/nagios/etc/objects/templates.cfg

 # Definitions for monitoring the local (Linux) host
 cfg_file=/usr/local/nagios/etc/objects/localhost.cfg

 # Definitions for monitoring a Windows machine
 #cfg_file=/usr/local/nagios/etc/objects/windows.cfg

 # Definitions for monitoring a router/switch
 #cfg_file=/usr/local/nagios/etc/objects/switch.cfg

 # Definitions for monitoring a network printer
 #cfg_file=/usr/local/nagios/etc/objects/printer.cfg


 # You can also tell Nagios to process all config files (with a .cfg
 # extension) in a particular directory by using the cfg_dir
 # directive as shown below:


・「nagios.cfg」ファイル変更後の内容

 # You can specify individual object config files as shown below:
 #cfg_file=/usr/local/nagios/etc/objects/commands.cfg
 #cfg_file=/usr/local/nagios/etc/objects/contacts.cfg
 #cfg_file=/usr/local/nagios/etc/objects/timeperiods.cfg
 #cfg_file=/usr/local/nagios/etc/objects/templates.cfg

 # Definitions for monitoring the local (Linux) host
 #cfg_file=/usr/local/nagios/etc/objects/localhost.cfg

 # Definitions for monitoring a Windows machine
 #cfg_file=/usr/local/nagios/etc/objects/windows.cfg

 # Definitions for monitoring a router/switch
 #cfg_file=/usr/local/nagios/etc/objects/switch.cfg

 # Definitions for monitoring a network printer
 #cfg_file=/usr/local/nagios/etc/objects/printer.cfg


 # You can also tell Nagios to process all config files (with a .cfg
 # extension) in a particular directory by using the cfg_dir
 # directive as shown below:
 cfg_dir=/usr/local/nagios/etc/global
 cfg_dir=/usr/local/nagios/etc/Default_collector


(7)ApacheとNagiosを再起動します。

# service httpd stop
# service nagios restart
# service httpd start

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