本帖最后由monicazhang于2015-10-3021:40编辑
echo-n"RestartingApacheservice..." /sbin/servicehttpdrestart ;; esac ;; HARD) echo-n"RestartingApacheservice..." /sbin/servicehttpdrestart ;; esac ;; esac exit0 1)配置Nagios监控机上的配置文件 Ø修改nagios.cfg enable_event_handlers=1#开启全局
事件处理 Ø在命令配置文件中定义重启apache的命令 #cd/usr/local/nagios/etc/ #viobjects/commands.cfg #restarttheapacheserviceonaremoteservernagios安装 definecommand{ command_namerestart-httpd command_line/usr/bin/sshnagios@$HOSTADDRESS$"sudo/usr/local/nagios/libexec/eventhandlers/restart-httpd$SERVICESTATE$$SERVICESTATETYPE$$SERVICEATTEMPT$" } Ø配置主机监控文件 修改services.cfg配置，加入事件处理配置
#vi/usr/local/nagios/etc/objects/services.cfg defineservice{ usesrv-pnp host_namenagios-test1 service_descriptioncheck_tcp80 check_period24x7 max_check_attempts4 normal_check_interval3 retry_check_interval2 contact_groupsadmins notification_interval10 notification_period24x7 notification_optionsw,u,c,r event_handler_enabled1#启用事件处理 event_handlerrestart-httpd#事件处理执行的命令 check_commandcheck_tcp!80 }
1)测试 在被监控机停止apache服务，等待几分钟后检查被监控机的apache服务是否自动启动。 Nagios通过NRPE执行event_hander1)在远程机器上编写service重启脚本
vi/usr/local/nagios/libexec/service_hander 内容如下: #!/bin/sh # #Eventhandlerscriptforrestartingtheserviceontheremotemachine开源监控软件 # #Note:Thisscriptwillonlyrestartserviceiftheserviceis #retried2times(ina"soft"state)oriftheservicessomehow #managestofallintoa"hard"errorstate. # # #Whatstateisservicein? case"$1"in OK) ;; WARNING) ;; UNKNOWN) ;; CRITICAL) #Isthisa"soft"ora"hard"state? case"$2"in SOFT) #Whatcheckattemptareweon?Wedon'twanttorestarttheserviceonthefirst #check,becauseitmayjustbeafluke! case"$3"in 2) echo-n"Restarting$4service..." /sbin/service$4restart ;; esac ;; HARD) echo-n"Restarting$4service..." /sbin/service$4restart ;; esac ;; esac exit0
重新编译nrpe，需要让nrpe传递参数 ./configure--prefix=/usr/local/nagios--enable-command-argsnagios配置 修改nrpe.cfg vi/usr/local/nagios/etc/nrpe.cfg dont_blame_nrpe0改为1 command[restart_service]=/usr/local/nagios/libexec/service_hander$ARG1$$ARG2$$ARG3$$ARG4$ 配置完nrpe后需要重启启动nrpe服务 服务端配置（修改ssh方式下的command.cfg） vi/usr/local/nagios/etc/objects/commands.cfg
找到以下内容： definecommand{ command_namerestart-httpd command_line/usr/bin/sshnagios@$HOSTADDRESS$"sudo/usr/local/nagios/libexec/eventhandlers/restart-httpd$SERVICESTATE$$SERVICESTATETYPE$$SERVICEATTEMPT$" } 修改为： definecommand{ command_namerestart-httpd command_line/usr/local/nagios/libexec/check_nrpe-H172.26.188.202-crestart_service-a$SERVICESTATE$$SERVICESTATETYPE$$SERVICEATTEMPT$httpd } 报警通知邮件报警通知安装配置sendmailsendmail安装 yum-yinstallsendmailsendmail-cfsendmail-develdovecotcyrus-saslcyrus-sasl-libcyrus-sasl-plain sendmail配置 n配置MTA vim/etc/mail/sendmail.mc A、找到DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1,Name=MTA')dnl监控软件 修改为DAEMON_OPTIONS(`Port=smtp,Addr=0.0.0.0,Name=MTA')dnl B、找到TRUST_AUTH_MECH(`EXTERNALDIGEST-MD5CRAM-MD5LOGINPLAIN')dnl define(`confAUTH_MECHANISMS',`EXTERNALGSSAPIDIGEST-MD5CRAM-MD5LOGINPLAIN')dnl 去掉注释及前面的dnl，把两行移到最前面。 n生成sendmail.cf主配置文件。 mv/etc/mail/sendmail.cf/etc/mail/sendmail.cf-bak
m4/etc/mail/sendmail.mc>/etc/mail/sendmail.cf n设置local-host-names文件 echo"nagios-server.com">>/etc/mail/local-host-names
此处abc.com是域名，即DNS解析MX解析的域名 n设置访问控制access和access.db。 Acces的配置为：地址控制 Vi/etc/mail/access localhost.localdomainRELAY localhostRELAY 127.0.0.1RELAY 192.168.0.71RELAY 192.168.0.129RELAY Makemaphashaccess<access n添加账户： groupaddusermail
adduser-gusermail-s/sbin/nologinuser1nagios实施
passwduser1 n设置别名 vim/etc/aliases nagios邮件报警配置Ø配置邮件报警command #vi/usr/local/nagios/etc/objects/commands.cfg #'notify-host-by-email'commanddefinition definecommand{ command_namenotify-host-by-email command_line/usr/bin/printf"%b""*****Nagios*****NotificationType:$NOTIFICATIONTYPE$Host:$HOSTNAME$State:$HOSTSTATE$Address:$HOSTADDRESS$Info:$HOSTOUTPUT$Date/Time:$LONGDATETIME$"|/bin/mail-s"**$NOTIFICATIONTYPE$HostAlert:$HOSTNAME$is$HOSTSTATE$**"$CONTACTEMAIL$ } #'notify-service-by-email'commanddefinitionnagios培训
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