他のサーバーのリソース監視する方法

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他のサーバーのリソース監視する方法
(Redhat7.3がリモート)

Modified: 9 January 2006

リモートサーバーの設定　

前もって、Pluginをダウンロードしてインストールします。

以下から、Pluginの本体、"nagios-plugins-1.3.1-10.rh73.dag.i386.rpm"をダウンロードします。

http://dag.wieers.com/packages/nagios-plugins/

以下から、"fping-2.4-1.b2.0.rh7.rf.i386.rpm"をダウンロードします。

http://dag.wieers.com/packages/fping/

以下から、"perl-Net-SNMP-4.1.0-0.dag.rh73.noarch.rpm"をダウンロードします。

http://dag.wieers.com/packages/perl-Net-SNMP/

以下の手順でリモートサーバーにもインストールします。
# rpm -ivh nagios-plugins-1.3.1-10.rh73.dag.i386.rpm 
エラー: 依存性の欠如:
        perl(Net::SNMP)は nagios-plugins-1.3.1-10.rh73.dag に必要とされています
        fpingは nagios-plugins-1.3.1-10.rh73.dag に必要とされています
# rpm -ivh perl-Net-SNMP-4.1.0-0.dag.rh73.noarch.rpm 
Preparing...                ########################################### [100%]
   1:perl-Net-SNMP          ########################################### [100%]
# rpm -ivh fping-2.4-1.b2.0.rh7.rf.i386.rpm 
Preparing...                ########################################### [100%]
   1:fping                  ########################################### [100%]
# rpm -ivh nagios-plugins-1.3.1-10.rh73.dag.i386.rpm 
Preparing...                ########################################### [100%]
   1:nagios-plugins         ########################################### [100%]
#

nrpeのダウンロードとインストール　

実行ユーザを作ります。
# useradd nagios
以下からダウンロードします。

http://www.nagiosexchange.org/NRPE.77.0.html?&tx_netnagext_pi1[p_view]=126

以下のように、解凍してMakeします。

# tar zxvf nrpe-1.9.tar.gz
# cd nrpe-1.9
# ./configure
# make all

次に、nrpeのモジュールをインストールします。

# cp src/nrpe /home/nagios
# cp nrpe.cfg /home/nagios
# cd /home/nagios
# chown nagios.nagios nrpe
# chown nagios.nagios nrpe.cfg

設定ファイル（"/home/nagios/nrpe.cfg"）を以下のように変更します。

#############################################################################
# Sample NRPE Config File 
# Written by: Ethan Galstad (nagios@nagios.org)
# 
# Last Modified: 03-05-2003
#
# NOTES:
# This is a sample configuration file for the NRPE daemon.  It needs to be
# located on the remote host that is running the NRPE daemon, not the host
# from which the check_nrpe client is being executed.
#############################################################################



# PORT NUMBER
# Port number we should wait for connections on.
# NOTE: This must be a non-priviledged port (i.e. > 1024).
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd

server_port=5666



# SERVER ADDRESS
# Address that nrpe should bind to in case there are more than one interface
# and you do not want nrpe to bind on all interfaces.
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd

#server_address=192.168.1.1



# ALLOWED HOST ADDRESSES
# This is a comma-delimited list of IP address of hosts that are allowed
# to talk to the NRPE daemon.
#
# NOTE: The daemon only does rudimentary checking of the client's IP
#       address.  I would highly recommend adding entries in your
#       /etc/hosts.allow file to allow only the specified host to connect
#       to the port you are running this daemon on.
#
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd

allowed_hosts=127.0.0.1



# NRPE USER
# This determines the effective user that the NRPE daemon should run as.  
# You can either supply a username or a UID.
# 
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd

nrpe_user=nagios



# NRPE GROUP
# This determines the effective group that the NRPE daemon should run as.  
# You can either supply a group name or a GID.
# 
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd

nrpe_group=nagios



# COMMAND ARGUMENT PROCESSING
# This option determines whether or not the NRPE daemon will allow clients
# to specify arguments to commands that are executed.  This option only works
# if the daemon was configured with the --enable-command-args configure script
# option.  
#
# *** ENABLING THIS OPTION IS A SECURITY RISK! *** 
# Read the SECURITY file for information on some of the security implications
# of enabling this variable.
#
# Values: 0=do not allow arguments, 1=allow command arguments

dont_blame_nrpe=0



# DEBUGGING OPTION
# This option determines whether or not debugging messages are logged to the
# syslog facility.
# Values: 0=debugging off, 1=debugging on

debug=0



# COMMAND TIMEOUT
# This specifies the maximum number of seconds that the NRPE daemon will
# allow plugins to finish executing before killing them off.

command_timeout=60



# INCLUDE CONFIG FILE
# This directive allows you to include definitions from an external config file.

#include=<somefile.cfg>



# INCLUDE CONFIG DIRECTORY
# This directive allows you to include definitions from config files (with a
# .cfg extension) in one or more directories (with recursion).

#include_dir=<somedirectory>
#include_dir=<someotherdirectory>



# COMMAND DEFINITIONS
# Command definitions that this daemon will run.  Definitions
# are in the following format:
#
# command[<command_name>]=<command_line>
#
# When the daemon receives a request to return the results of <command_name>
# it will execute the command specified by the <command_line> argument.
#
# Unlike Nagios, the command line cannot contain macros - it must be
# typed exactly as it should be executed.
#
# Note: Any plugins that are used in the command lines must reside
# on the machine that this daemon is running on!  The examples below
# assume that you have plugins installed in a /usr/local/nagios/libexec
# directory.  Also note that you will have to modify the definitions below
# to match the argument format the plugins expect.  Remember, these are
# examples only!

# The following examples use hardcoded command arguments...

command[check_users]=/usr/lib/nagios/plugins/check_users -w 5 -c 10
command[check_load]=/usr/lib/nagios/plugins/check_load -w 15,10,5 -c 30,25,20
command[check_disk1]=/usr/lib/nagios/plugins/check_disk -w 20 -c 10 -p /dev/sda1
command[check_disk2]=/usr/lib/nagios/plugins/check_disk -w 20 -c 10 -p /dev/sda2
command[check_zombie_procs]=/usr/lib/nagios/plugins/check_procs -w 5 -c 10 -s Z
command[check_total_procs]=/usr/lib/nagios/plugins/check_procs -w 150 -c 200 

# The following examples allow user-supplied arguments and can
# only be used if the NRPE daemon was compiled with support for 
# command arguments *AND* the dont_blame_nrpe directive in this
# config file is set to '1'...

#command[check_users]=/usr/local/nagios/libexec/check_users -w $ARG1$ -c $ARG2$
#command[check_load]=/usr/local/nagios/libexec/check_load -w $ARG1$ -c $ARG2$
#command[check_disk]=/usr/local/nagios/libexec/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$
#command[check_procs]=/usr/local/nagios/libexec/check_procs -w $ARG1$ -c $ARG2$ -s $ARG3$
#

"/etc/services"に以下を追加します。

nrpe            5666/TCP                        # NRPE

"/etc/xinetd.d/nrpe"を作成します。

service nrpe
{
        flags 			= REUSE
        log_on_failure 	+= USERID
        port 				= 5666
        socket_type 		= stream
        protocol 			= tcp
        user 				= nagios
        server 			= /home/nagios/nrpe
        server_args 		= -c /home/nagios/nrpe.cfg --inetd
        type 				= UNLISTED
        wait 				= no
}

"xinetd"を再起動します。

# service xinetd restart

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