Nrpe 監控Linux系統

Nrpe 監控Linux系統

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linux 客戶端
1.  建立使用者
# useradd nagios
# passwd nagios

2.  安裝Nagios外掛
# tar zxvf nagios-plugins-1.5.tar.gz
# cd nagios-plugins-1.5
# ./configure --prefix=/usr/local/nagios
# make
# make install
# chown nagios.nagios /usr/local/nagios
# chown -R nagios.nagios /usr/local/nagios/libexec

3.  安裝NRPE
# tar zxvf nrpe-2.15.tar.gz
# cd nrpe-2.15
# ./configure
# make all
# make install-daemon
# make install-daemon-config
# make install-xinetd

4.  修改監控的配置檔案
# vi /usr/local/nagios/etc/nrp.cfg
allowed_hosts=127.0.0.1,202.xx.xx.xx   (監控伺服器地址)

5.  啟動nrpe：
# /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d


6.  放入自啟動
# vim /etc/rc.local
/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg –d

7.  nrpe配置檔案
#增加監控伺服器ip

[root@sz etc]# cat nrpe.cfg
#############################################################################
# Sample NRPE Config File
# Last Modified: 01-17-2014
#
# 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.
#############################################################################


# LOG FACILITY
# The syslog facility that should be used for logging purposes.

log_facility=daemon


# PID FILE
# The name of the file in which the NRPE daemon should write it's process ID
# number.  The file is only written if the NRPE daemon is started by the root
# user and is running in standalone mode.

pid_file=/var/run/nrpe.pid

# 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=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


# ALLOWED HOST ADDRESSES
# This is an optional comma-delimited list of IP address or hostnames
# that are allowed to talk to the NRPE daemon. Network addresses with a bit mask
# (i.e. 192.168.1.0/24) are also supported. Hostname wildcards are not currently
# supported.
#
# 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

#增加監控伺服器ip
allowed_hosts=127.0.0.1,192.168.9.172
 


# 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



# BASH COMMAND SUBTITUTION
# This option determines whether or not the NRPE daemon will allow clients
# to specify arguments that contain bash command substitutions of the form
# $(...).  This option only works if the daemon was configured with both
# the --enable-command-args and --enable-bash-command-substitution configure
# script options.
#
# *** ENABLING THIS OPTION IS A HIGH SECURITY RISK! ***
# Read the SECURITY file for information on some of the security implications
# of enabling this variable.
#
# Values: 0=do not allow bash command substitutions,
#         1=allow bash command substitutions

allow_bash_command_substitution=0



# COMMAND PREFIX
# This option allows you to prefix all commands with a user-defined string.
# A space is automatically added between the specified prefix string and the
# command line from the command definition.
#
# *** THIS EXAMPLE MAY POSE A POTENTIAL SECURITY RISK, SO USE WITH CAUTION! ***
# Usage scenario:
# Execute restricted commmands using sudo.  For this to work, you need to add
# the nagios user to your /etc/sudoers.  An example entry for alllowing
# execution of the plugins from might be:
#
# nagios          ALL=(ALL) NOPASSWD: /usr/lib/nagios/plugins/
#
# This lets the nagios user run all commands in that directory (and only them)
# without asking for a password.  If you do this, make sure you don't give
# random users write access to that directory or its contents!

# command_prefix=/usr/bin/sudo



# 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



# CONNECTION TIMEOUT
# This specifies the maximum number of seconds that the NRPE daemon will
# wait for a connection to be established before exiting. This is sometimes
# seen where a network problem stops the SSL being established even though
# all network sessions are connected. This causes the nrpe daemons to
# accumulate, eating system resources. Do not set this too low.

connection_timeout=300



# WEEK RANDOM SEED OPTION
# This directive allows you to use SSL even if your system does not have
# a /dev/random or /dev/urandom (on purpose or because the necessary patches
# were not applied). The random number generator will be seeded from a file
# which is either a file pointed to by the environment valiable $RANDFILE
# or $HOME/.rnd. If neither exists, the pseudo random number generator will
# be initialized and a warning will be issued.
# Values: 0=only seed from /dev/[u]random, 1=also seed from weak randomness

#allow_weak_random_seed=1



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

#include=



# 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=
#include_dir=



# COMMAND DEFINITIONS
# Command definitions that this daemon will run.  Definitions
# are in the following format:
#
# command[]=
#
# When the daemon receives a request to return the results of
# it will execute the command specified by the 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...

#檢查ping
command[check_ping]=/usr/local/nagios/libexec/check_ping -H 172.18.88.1 -w 200,20% -c 400,50%

#檢測當前登入的使用者數量
command[check_users]=/usr/local/nagios/libexec/check_users -w 5 -c 10

#檢測系統負載
command[check_load]=/usr/local/nagios/libexec/check_load -w 60,55,50 -c 90,85,80

#檢測僵死程式
command[check_zombie_procs]=/usr/local/nagios/libexec/check_procs -w 5 -c 10 -s Z

#檢測程式總數
command[check_total_procs]=/usr/local/nagios/libexec/check_procs -w 150 -c 200

#檢測目錄空間
command[check_disk]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /

#檢測程式總數
command[check_procs]=/usr/local/nagios/libexec/check_procs -w 600 -c 800

#檢測記憶體使用
command[check_mem]=/usr/local/nagios/libexec/check_mem -w 65 -w 85 -c 85 -c 95

#檢測swap空間
command[check_swap]=/usr/local/nagios/libexec/check_swap -w 15% -c 5%

#檢測cpu使用率
command[check_cpu]=/usr/local/nagios/libexec/check_cpu_perf 15 5

#檢測io
command[check_io]=/usr/local/nagios/libexec/check_io -d sda -W 50 -C 100

#檢測檔案系統目錄使用率
command[check_disk]=/usr/local/nagios/libexec/check_fs 85 90

#檢測系統日誌有沒有報錯資訊
command[check_log]=/usr/local/nagios/libexec/check_log -F /var/log/messages -O /tmp/tmp_messages -q "ERROR|Error|error|WARNING|Warning|warning" -e "end_request: I/O error"

#檢測重要檔案修改MD5
command[check_md5]=/usr/local/nagios/libexec/check_md5 -F /var/log/audit/md5check.log

#command[check_hda1]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/hda1
# 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'.  This poses a potential security risk, so
# make sure you read the SECURITY file before doing this.

#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 $ARG3$
[root@szamcthsvm2 etc]#



8.  centreon伺服器端

#檢測網路卡流量
./check_centreon_snmp_traffic -H $HOSTADDRESS$ -C $ARG1$ -v 2c -n -i $ARG2$ -w $ARG3$ -c $ARG4$

./check_nrpe -H $HOSTADDRESS$ -c check_mem -t 40
./check_nrpe -H $HOSTADDRESS$ -c check_cpu -t 40  
./check_nrpe -H $HOSTADDRESS$ -c check_zombie_procs -t 40
./check_nrpe -H $HOSTADDRESS$ -c check_load -t 40
./check_nrpe -H $HOSTADDRESS$ -c check_io -t 40
./check_nrpe -H $HOSTADDRESS$ -c check_procs -t 40
./check_nrpe -H $HOSTADDRESS$ -c check_log -t 40
./check_nrpe -H $HOSTADDRESS$ -c check_disk -t 40
./check_nrpe -H $HOSTADDRESS$ -c check_fs -t 40