如何在CentOS和Red Hat中安装和配置nagios nrpe
时间：2019-08-20 17:58:15 来源:igfitidea点击:
在本教程中，将在nagios服务器中修改一些配置，用来监控服务器。
安装环境
操作系统：CentOS 6.3
Nagios服务器：主机名：nagios-server，ip地址：192.168.122.22
Nagios客户端：主机名：web-node01，ip地址：192.168.122.94
在nagios客户端安装和配置NRPE
下载epel repo并安装nagios插件和nrpe
wget dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm rpm -ivh epel-release-6-8.noarch.rpm yum install -y nrpe nagios-plugins-all openssl
默认情况下，所有nagios插件都安装在/usr/lib/nagios/plugins/
ls -l /usr/lib/nagios/plugins/
备份配置文件nrpe.cfg
[root@web-node01 ~]# cd /etc/nagios/ [root@web-node01 nagios]# ls -l total 16 -rw-r--r-- 1 root root 7296 Mar 2 15:49 nrpe.cfg [root@web-node01 nagios]# pwd /etc/nagios [root@web-node01 nagios]# cp -p nrpe.cfg nrpe.cfg.orig
配置nrpe.cfg文件
在 allowed_hosts中添加nagios服务器ip
[root@web-node01 nagios]# egrep -v '^#|^$' nrpe.cfg log_facility=daemon pid_file=/var/run/nrpe/nrpe.pid server_port=5666 nrpe_user=nrpe nrpe_group=nrpe allowed_hosts=127.0.0.1,192.168.122.22 dont_blame_nrpe=0 debug=0 command_timeout=60 connection_timeout=300 include_dir=/etc/nrpe.d/ command[check_users]=/usr/lib/nagios/plugins/check_users -w 5 -c 10 command[check_load]=/usr/lib/nagios/plugins/check_load -w 15,10,5 -c 30,25,20 command[check_hda1]=/usr/lib/nagios/plugins/check_disk -w 20% -c 10% -p /dev/hda1 command[check_zombie_procs]=/usr/lib/nagios/plugins/check_procs -w 5 -c 10 -s Z command[check_total_procs]=/usr/lib/nagios/plugins/check_procs -w 150 -c 200 [root@web-node01 nagios]#
重新启动nrpe服务
/etc/init.d/nrpe restart
现在在nagios服务器中添加web-node01，这样我们就可以监视服务器的服务了。
下面是所有我们编辑的配置文件
A： /etc/nagios/nagios.cfg
[root@nagios-server nagios]# egrep -v '^#|^$' nagios.cfg log_file=/var/log/nagios/nagios.log cfg_file=/etc/nagios/objects/commands.cfg cfg_file=/etc/nagios/objects/contacts.cfg cfg_file=/etc/nagios/objects/timeperiods.cfg cfg_file=/etc/nagios/objects/templates.cfg cfg_file=/etc/nagios/objects/localhost.cfg cfg_dir=/etc/nagios/objects/companyA/ object_cache_file=/var/log/nagios/objects.cache precached_object_file=/var/log/nagios/objects.precache resource_file=/etc/nagios/private/resource.cfg status_file=/var/log/nagios/status.dat status_update_interval=10 nagios_user=nagios nagios_group=nagios check_external_commands=1 command_check_interval=-1 command_file=/var/spool/nagios/cmd/nagios.cmd external_command_buffer_slots=4096 lock_file=/var/run/nagios.pid temp_file=/var/log/nagios/nagios.tmp temp_path=/tmp event_broker_options=-1 log_rotation_method=d log_archive_path=/var/log/nagios/archives use_syslog=1 log_notifications=1 log_service_retries=1 log_host_retries=1 log_event_handlers=1 log_initial_states=0 log_external_commands=1 log_passive_checks=1 service_inter_check_delay_method=s max_service_check_spread=30 service_interleave_factor=s host_inter_check_delay_method=s max_host_check_spread=30 max_concurrent_checks=0 check_result_reaper_frequency=10 max_check_result_reaper_time=30 check_result_path=/var/log/nagios/spool/checkresults max_check_result_file_age=3600 cached_host_check_horizon=15 cached_service_check_horizon=15 enable_predictive_host_dependency_checks=1 enable_predictive_service_dependency_checks=1 soft_state_dependencies=0 auto_reschedule_checks=0 auto_rescheduling_interval=30 auto_rescheduling_window=180 sleep_time=0.25 service_check_timeout=60 host_check_timeout=30 event_handler_timeout=30 notification_timeout=30 ocsp_timeout=5 perfdata_timeout=5 retain_state_information=1 state_retention_file=/var/log/nagios/retention.dat retention_update_interval=60 use_retained_program_state=1 use_retained_scheduling_info=1 retained_host_attribute_mask=0 retained_service_attribute_mask=0 retained_process_host_attribute_mask=0 retained_process_service_attribute_mask=0 retained_contact_host_attribute_mask=0 retained_contact_service_attribute_mask=0 interval_length=60 check_for_updates=1 bare_update_check=0 use_aggressive_host_checking=0 execute_service_checks=1 accept_passive_service_checks=1 execute_host_checks=1 accept_passive_host_checks=1 enable_notifications=1 enable_event_handlers=1 process_performance_data=0 obsess_over_services=0 obsess_over_hosts=0 translate_passive_host_checks=0 passive_host_checks_are_soft=0 check_for_orphaned_services=1 check_for_orphaned_hosts=1 check_service_freshness=1 service_freshness_check_interval=60 service_check_timeout_state=c check_host_freshness=0 host_freshness_check_interval=60 additional_freshness_latency=15 enable_flap_detection=1 low_service_flap_threshold=5.0 high_service_flap_threshold=20.0 low_host_flap_threshold=5.0 high_host_flap_threshold=20.0 date_format=us p1_file=/usr/sbin/p1.pl enable_embedded_perl=1 use_embedded_perl_implicitly=1 illegal_object_name_chars=`~!$%^&*|'"<>?,()= illegal_macro_output_chars=`~$&|'"<> use_regexp_matching=0 use_true_regexp_matching=0 admin_email=nagios@localhost admin_pager=pagenagios@localhost daemon_dumps_core=0 use_large_installation_tweaks=0 enable_environment_macros=1 debug_level=0 debug_verbosity=1 debug_file=/var/log/nagios/nagios.debug max_debug_file_size=1000000 [root@nagios-server nagios]#
B： /etc/nagios/objects/命令.cfg
[root@nagios-server objects]# egrep -v '^#|^$' commands.cfg
define command{
command_name notify-host-by-email
command_line /usr/bin/printf "%b" "***** Nagios *****nnNotification Type: $NOTIFICATIONTYPE$nHost: $HOSTNAME$nState: $HOSTSTATE$nAddress: $HOSTADDRESS$nInfo: $HOSTOUTPUT$nnDate/Time: $LONGDATETIME$n" | /bin/mail -s "** $NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$ **" $CONTACTEMAIL$
}
define command{
command_name notify-service-by-email
command_line /usr/bin/printf "%b" "***** Nagios *****nnNotification Type: $NOTIFICATIONTYPE$nnService: $SERVICEDESC$nHost: $HOSTALIAS$nAddress: $HOSTADDRESS$nState: $SERVICESTATE$nnDate/Time: $LONGDATETIME$nnAdditional Info:nn$SERVICEOUTPUT$n" | /bin/mail -s "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$
}
define command{
command_name check-host-alive
command_line $USER1$/check_ping -H $HOSTADDRESS$ -w 3000.0,80% -c 5000.0,100% -p 5
}
define command{
command_name check_local_disk
command_line $USER1$/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$
}
define command{
command_name check_local_load
command_line $USER1$/check_load -w $ARG1$ -c $ARG2$
}
define command{
command_name check_local_procs
command_line $USER1$/check_procs -w $ARG1$ -c $ARG2$ -s $ARG3$
}
define command{
command_name check_local_users
command_line $USER1$/check_users -w $ARG1$ -c $ARG2$
}
define command{
command_name check_local_swap
command_line $USER1$/check_swap -w $ARG1$ -c $ARG2$
}
define command{
command_name check_local_mrtgtraf
command_line $USER1$/check_mrtgtraf -F $ARG1$ -a $ARG2$ -w $ARG3$ -c $ARG4$ -e $ARG5$
}
define command{
command_name check_ftp
command_line $USER1$/check_ftp -H $HOSTADDRESS$ $ARG1$
}
define command{
command_name check_hpjd
command_line $USER1$/check_hpjd -H $HOSTADDRESS$ $ARG1$
}
define command{
command_name check_snmp
command_line $USER1$/check_snmp -H $HOSTADDRESS$ $ARG1$
}
define command{
command_name check_http
command_line $USER1$/check_http -I $HOSTADDRESS$ $ARG1$
}
define command{
command_name check_ssh
command_line $USER1$/check_ssh $ARG1$ $HOSTADDRESS$
}
define command{
command_name check_dhcp
command_line $USER1$/check_dhcp $ARG1$
}
define command{
command_name check_ping
command_line $USER1$/check_ping -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$ -p 5
}
define command{
command_name check_pop
command_line $USER1$/check_pop -H $HOSTADDRESS$ $ARG1$
}
define command{
command_name check_imap
command_line $USER1$/check_imap -H $HOSTADDRESS$ $ARG1$
}
define command{
command_name check_smtp
command_line $USER1$/check_smtp -H $HOSTADDRESS$ $ARG1$
}
define command{
command_name check_tcp
command_line $USER1$/check_tcp -H $HOSTADDRESS$ -p $ARG1$ $ARG2$
}
define command{
command_name check_udp
command_line $USER1$/check_udp -H $HOSTADDRESS$ -p $ARG1$ $ARG2$
}
define command{
command_name check_nt
command_line $USER1$/check_nt -H $HOSTADDRESS$ -p 12489 -v $ARG1$ $ARG2$
}
define command{
command_name check_nrpe
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
}
define command{
command_name process-host-perfdata
command_line /usr/bin/printf "%b" "$LASTHOSTCHECK$t$HOSTNAME$t$HOSTSTATE$t$HOSTATTEMPT$t$HOSTSTATETYPE$t$HOSTEXECUTIONTIME$t$HOSTOUTPUT$t$HOSTPERFDATA$n" >> /var/log/nagios/host-perfdata.out
}
define command{
command_name process-service-perfdata
command_line /usr/bin/printf "%b" "$LASTSERVICECHECK$t$HOSTNAME$t$SERVICEDESC$t$SERVICESTATE$t$SERVICEATTEMPT$t$SERVICESTATETYPE$t$SERVICEEXECUTIONTIME$t$SERVICELATENCY$t$SERVICEOUTPUT$t$SERVICEPERFDATA$n" >> /var/log/nagios/service-perfdata.out
}
[root@nagios-server objects]#
C： /etc/nagios/objects/companyA/主机.cfg
[root@nagios-server companyA]# cat hosts.cfg
##### in this file only list host information only add hosts of companyA#######
define host{
use linux-server
host_name web-node01
alias web-node01
address 192.168.122.94
}
[root@nagios-server companyA]#
D： /etc/nagios/objects/companyA/服务.cfg
[root@nagios-server companyA]# cat services.cfg
### services running in companyA servers
define service{
use generic-service
host_name web-node01
service_description PING
check_command check_ping!100.0,20%!500.0,60%
}
define service{
use generic-service
host_name web-node01
service_description Current Load
check_command check_nrpe!check_load
}
define service{
use generic-service
host_name web-node01
service_description Total Processes
check_command check_nrpe!check_users
}
[root@nagios-server companyA]#
