Eric's linux and nginx!

从新搭建的 Nagios 服务器，该监控的业务服务都添加了内存，磁盘I/O，nginx 连接的监控，今天测试了一下邮件报警，居然不报警，查看 nagios.log 日志 有这样的错误：

[1279598130] SERVICE NOTIFICATION: eric;fms;int_net;UNKNOWN;notify-service-by-email;ERROR: Description table : The requested table is empty or does not exist.
[1279598130] Warning: Attempting to execute the command “/usr/bin/printf “%b” “***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: int_net\nHost: fms-server\nAddress: 219.232.237.166\nState: UNKNOWN\n\nDate/Time: Tue Jul 20 11:55:30 CST 2010\n\nAdditional Info:\n\nERROR: Description table : The requested table is empty or does not exist.” | /bin/mail -s “** PROBLEM Service Alert: fms-server/int_net is UNKNOWN **” eric@nginxs.com” resulted in a return code of 127.  Make sure the script or binary you are trying to execute actually exists…

“Make sure the script or binary you are trying to execute actually exists…”  提示的 mail 命令不存在

nagios $> whereis mail

mail: /usr/bin/mail /etc/mail.rc /usr/share/man/man1/mail.1.gz

路径果然 不是  /bin/mail

修改 commands.cfg

define command{
        command_name    notify-host-by-email
        command_line    /usr/bin/printf “%b” “***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState: $HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n” | /usr/bin/mail -s “** $NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$ **” $CONTACTEMAIL$
        }

改过之后，还不行·那就直接用系统自带的 命令 mail 发送email

nagios $> mail -s "test" eric@nginxs.com < /root/test

没有返回任何东西。那就加上-v参数打印他的行踪

nagios $> mail -v -s "test" eric@nginxs.com < /root/test

LOG: MAIN
  <= root@fms U=root P=local S=5703
root@fms:/usr/local/nagios/etc/objects# delivering 1ObWQb-0002nV-BI
R: system_aliases for test@fms
LOG: MAIN
  ** test@fms: Unrouteable address
R: nonlocal for eric@nginxs.com
LOG: MAIN
  ** eric@nginxs.com R=nonlocal: Mailing to remote domains not supported
LOG: MAIN
  <= <> R=1ObWQb-0002nV-BI U=Debian-exim P=local S=6505
delivering 1ObWQb-0002nX-EQ
R: system_aliases for root@fms
R: system_aliases for eric@fms
R: userforward for eric@fms
R: procmail for eric@fms
R: maildrop for eric@fms
R: lowuid_aliases for eric@fms (UID 1000)
R: local_user for eric@fms
T: appendfile for eric@fms
LOG: MAIN
  Completed
LOG: MAIN
  => eric <root@fms> R=local_user T=mail_spool
LOG: MAIN
  Completed

没有验证远程 email 服务器，发现他用的 debian-exim 去发的，于是看的它的配置文件：

nagios $> vim /etc/exim4/update-exim4.conf.conf

dc_eximconfig_configtype='local'
dc_other_hostnames='fms'
dc_local_interfaces='127.0.0.1'
dc_readhost=''
dc_relay_domains=''
dc_minimaldns='false'
dc_relay_nets=''
dc_smarthost=''
CFILEMODE='644'
dc_use_split_config='false'
dc_hide_mailname=''
dc_mailname_in_oh='true'
dc_localdelivery='mail_spool'

注意红字部分，他指定的是本地，google   查明想往外发就要改为：

dc_eximconfig_configtype='internet'

也顺便伪造一下，发件人的地址与名字

nagios $> vim /etc/email-addresses

在最后添加：

eric:eric@tuokou.com

重启服务：

nagios $> /etc/init.d/exim4 restart

测试发送 email

nagios $>mail -v -s "test" eric@nginxs.com < /root/test

LOG: MAIN
  <= root@fms U=root P=local S=5703
root@fms:/usr/local/nagios/etc/objects# delivering 1ObWX9-0002zu-5r
R: system_aliases for test@fms
LOG: MAIN
  ** test@fms: Unrouteable address
R: dnslookup for eric@nginxs.com
T: remote_smtp for eric@nginxs.com
Connecting to mxdomain.qq.com [119.147.10.120]:25 ... connected
  SMTP<< 220 newmx42.qq.com MX QQ Mail Server
  SMTP>> EHLO fms
  SMTP<< 250-newmx42.qq.com
         250-SIZE 73400320
         250 OK
  SMTP>> MAIL FROM:<root@fms> SIZE=6936
  SMTP<< 250 Ok
  SMTP>> RCPT TO:<eric@nginxs.com>
  SMTP<< 250 Ok
  SMTP>> DATA
  SMTP<< 354 End data with <CR><LF>.<CR><LF>
  SMTP>> writing message and terminating "."
  SMTP<< 250 Ok: queued as
  SMTP>> QUIT
LOG: MAIN
  => eric@nginxs.com R=dnslookup T=remote_smtp H=mxdomain.qq.com [119.147.10.120                                                                                                 ]
LOG: MAIN
  <= <> R=1ObWX9-0002zu-5r U=Debian-exim P=local S=6424
delivering 1ObWXF-000304-Jo
R: system_aliases for root@fms
R: system_aliases for eric@fms
R: userforward for eric@fms
R: procmail for eric@fms
R: maildrop for eric@fms
R: lowuid_aliases for eric@fms (UID 1000)
R: local_user for eric@fms
T: appendfile for eric@fms
LOG: MAIN
  Completed
LOG: MAIN
  => eric <root@fms> R=local_user T=mail_spool
LOG: MAIN
  Completed 

注意红字部分，发送成功了··
登录邮箱，收到了用户 eric 地址为eric@nginxs.com 发来的了。