401 Unauthorized Errors in Logwatch for HTTPD

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epaulsen5
Posts: 2
Joined: Sat Sep 02, 2017 2:47 pm

401 Unauthorized Errors in Logwatch for HTTPD

Post by epaulsen5 »

I've recently had to upgrade to a new Nagios server. Everything seems to be working fine, however, in my nightly logwatch report, I'm seeing the following:

Requests with error response codes
400 Bad Request
/: 1 Time(s)
401 Unauthorized
/nagios/cgi-bin/status.cgi?hostgroup=all&style=overview: 178 Time(s)
/nagios/images/detail.gif: 177 Time(s)
/nagios/images/logos/mac40.png: 177 Time(s)
/nagios/images/logos/ubuntu.png: 177 Time(s)
/nagios/js/jquery-1.7.1.min.js: 177 Time(s)
/nagios/images/logos/hp-printer40.png: 176 Time(s)
/nagios/images/logos/redhat.png: 176 Time(s)
/nagios/images/status3.gif: 176 Time(s)
/nagios/js/nag_funcs.js: 176 Time(s)
/nagios/images/status2.gif: 175 Time(s)
/nagios/images/logos/hub.gif: 172 Time(s)
/nagios/stylesheets/common.css: 172 Time(s)
/nagios/stylesheets/status.css: 169 Time(s)
/nagios/stylesheets/nag_funcs.css: 148 Time(s)
/nagios/images/logos/router40.png: 140 Time(s)
/nagios/images/logos/internet.gif: 125 Time(s)
/nagios/images/logos/wifi.gif: 88 Time(s)
/nagios/images/logos/windows_server.png: 67 Time(s)
/nagios/: 1 Time(s)
/nagios/cgi-bin/tac.cgi: 1 Time(s)
/nagios/images/tacenabled.png: 1 Time(s)
/nagios/images/thermok.png: 1 Time(s)
/nagios/stylesheets/tac.css: 1 Time(s)

Nothing seems out of the ordinary and permissions look OK and I don't receive any errors in the browser when using the site. Suggestions?
---
Eric
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cdienger
Support Tech
Posts: 5045
Joined: Tue Feb 07, 2017 11:26 am

Re: 401 Unauthorized Errors in Logwatch for HTTPD

Post by cdienger »

The 401 means the request needed to be authenticated. This can be normal in that initially requests may not provide authentication information, they get the 401 response and then make the request again with authentication information. Can you see where the requests are coming from and verify that that client isn't having a problem accessing the interface?
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epaulsen5
Posts: 2
Joined: Sat Sep 02, 2017 2:47 pm

Re: 401 Unauthorized Errors in Logwatch for HTTPD

Post by epaulsen5 »

They are coming from my client:

10.1.60.71 - - [15/Sep/2017:10:13:56 -0500] "GET /nagios/images/status3.gif HTTP/1.1" 401 925 "https://nagios.smls.org/nagios/cgi-bin/ ... e=overview" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/603.3.8 (KHTML, like Gecko) Version/10.1.2 Safari/603.3.8"

I can say that nothing in the client seems to malfunction. I can log in without issue and the pages all render properly. There are no broken links missing images, but it seems the images are causing most of the errors.
---
Eric
User avatar
cdienger
Support Tech
Posts: 5045
Joined: Tue Feb 07, 2017 11:26 am

Re: 401 Unauthorized Errors in Logwatch for HTTPD

Post by cdienger »

That sounds consistent with my initial post. If you look at the logs immediately after the 401, you may see the same requests made but logging with a "200" status code instead and that would indicate that things are working as expected.
As of May 25th, 2018, all communications with Nagios Enterprises and its employees are covered under our new Privacy Policy.
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