Nagios Support Forum

Posted: **Mon Nov 18, 2013 1:13 pm**

Anytime I try to post something into maintanance mode I get an internal error page ... this is the error spit out in my httpd logs:

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==> error_log <==
[Mon Nov 18 11:59:26 2013] [warn] [client 10.222.253.97] Timeout waiting for output from CGI script /usr/local/nagios/sbin/cmd.cgi, referer: http://10.10.0.70/nagios/cgi-bin/cmd.cgi?cmd_typ=55&host=client315_node01
[Mon Nov 18 11:59:26 2013] [error] [client 10.222.253.97] Premature end of script headers: cmd.cgi, referer: http://10.10.0.70/nagios/cgi-bin/cmd.cgi?cmd_typ=55&host=client315_node01

==> access_log <==
127.0.0.1 - - [18/Nov/2013:12:01:24 -0600] "GET / HTTP/1.0" 200 - "-" "check_http/v1.4.15 (nagios-plugins 1.4.15)"

==> error_log <==
[Mon Nov 18 12:01:26 2013] [warn] [client 10.222.253.97] Timeout waiting for output from CGI script /usr/local/nagios/sbin/cmd.cgi, referer: http://10.10.0.70/nagios/cgi-bin/cmd.cgi?cmd_typ=55&host=client315_node01

==> access_log <==
10.222.253.97 - nagiosadmin [18/Nov/2013:11:57:26 -0600] "POST /nagios/cgi-bin/cmd.cgi HTTP/1.1" 500 610 "http://10.10.0.70/nagios/cgi-bin/cmd.cgi?cmd_typ=55&host=client315_node01" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0"

[root@vmmgmtappnagios httpd]#

this is the error I get on the web page:

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Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, root@localhost and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

I have not found a whole lot, I checked permissions on the directories and files, and they look to be owned by nagios, and are 0775.

Posted: **Mon Nov 18, 2013 1:36 pm**

What do you mean by post something into maintenance mode? Where are you seeing this error and how are you reproducing it? Are you talking about applying downtime to hosts/services?

Posted: **Mon Nov 18, 2013 2:30 pm**

I am putting a service in scheduled downtime, or what used to be maintenance mode. After I click commit on the schedule downtime page, it spins and gives me that internal error page.

Posted: **Mon Nov 18, 2013 4:46 pm**

Is SELinux enabled?

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sestatus

Posted: **Mon Nov 18, 2013 5:30 pm**

It is not.

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[root@vmmgmtappnagios bin]# sestatus
SELinux status:                 disabled
[root@vmmgmtappnagios bin]#

Posted: **Tue Nov 19, 2013 1:21 pm**

Let's take a look at your HTTP headers:

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cd /tmp
tcpdump 'port 80' -w http.log

While that is running, put something in maintenance/downtime mode and let the page load fully. Then CTRL+C the tcpdump, and PM me a copy of the http.log file.

Posted: **Tue Nov 19, 2013 4:44 pm**

attached is a less crappy tcp dump, haha.

Posted: **Tue Nov 19, 2013 5:37 pm**

vivithemage wrote:attached is a less crappy tcp dump, haha.

Nope. I need the crappy one.

Posted: **Tue Nov 19, 2013 5:40 pm**

looks like someone deleted my crappy one ... that one just had some garbled text...

either way, looking into another issue, I ran this:

chmod 777 /usr/local/nagios/var/rw/nagios.cmd

resolved the problem....and now it will allow me to put things in downtime.

i am not sure it is working though, the service never shows in downtime, but the log says it worked:

[1384900790] EXTERNAL COMMAND: SCHEDULE_HOST_SVC_DOWNTIME;client315_node02;1384900787;1384907987;1;0;7200;Nagios Admin;test123
[1384900790] SERVICE DOWNTIME ALERT: client315_node02;client315;STARTED; Service has entered a period of scheduled downtime
[1384900790] SERVICE DOWNTIME ALERT: client315_node02;PING;STARTED; Service has entered a period of scheduled downtime
[1384900790] SERVICE DOWNTIME ALERT: client315_node02;Check JVM;STARTED; Service has entered a period of scheduled downtime

this might be part of my mail issue I am having in my other thread.

Posted: **Tue Nov 19, 2013 5:46 pm**

I lied, looks like it just took a minute or so to actually show up in the nagios tactical screen.

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internal error page when setting something into maintenance

internal error page when setting something into maintenance

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Re: internal error page when setting something into maintena

Re: internal error page when setting something into maintena

Re: internal error page when setting something into maintena

Re: internal error page when setting something into maintena

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Re: internal error page when setting something into maintena