<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#ffffff" text="#000099"> You were correct. My check command showed: # 'check_http' command definition define command{ command_name check_http command_line $USER1$/check_http -I $HOSTADDRESS$ $ARG1$ } But my test was passing two arguments (-p and -u). Once I updated the test to use $HOSTADDRESS$ $ARG1$ $ARG2$ all worked immediately. Thanks for the help. :) <pre class="moz-signature" cols="72"> A. Davis Email: <a class="moz-txt-link-abbreviated" href="mailto:nccomp@gmail.com">nccomp@gmail.com</a> "There is no limit to what a man can accomplish if he doesn't care who gets the credit." - Ronald Reagan </pre> Jon Angliss wrote: <blockquote cite="mid:ktcs05php71n70igj7q5bhvlps61f0a6vm@4ax.com" type="cite"> <pre wrap="">On Fri, 15 May 2009 16:17:50 -0400, Andrew Davis <a class="moz-txt-link-rfc2396E" href="mailto:nccomp@gmail.com"><nccomp@gmail.com></a> wrote: </pre> <blockquote type="cite"> <pre wrap="">Oddly enough, low-level tests show an HTTP 302, which I expect. But Nagios is offering up a 400 error and a warning: >From my workstation, confirming the server is configured correctly: gentoo:~ adavis$ telnet seth 8080 Trying 10.1.1.23... Connected to seth.fl.ad.scripps.edu. Escape character is '^]'. GET /gp HTTP/1.0 Host: seth Accept: */* Connection: Keep-Alive Pragma: no-cache </pre> </blockquote> <pre wrap=""> Run the check_http as defined in the command definition, appending the -v argument. You'll get to see what the check_http command is executing. I suspect your command definition is incorrect, and you're missing something that is supposed to be triggering the "host" header. [.. snip ..] </pre> <blockquote type="cite"> <pre wrap="">From services.cfg: ## HTTP - alternate port define service { host_name seth service_description HTTP check_command check_http!-p 8080!-u /gp/pages/login.jsf notes <a class="moz-txt-link-freetext" href="http://$HOSTADDRESS$:8080/gp/pages/login.jsf">http://$HOSTADDRESS$:8080/gp/pages/login.jsf</a> max_check_attempts 3 normal_check_interval 15 retry_check_interval 1 check_period 24x7 notification_interval 120 notification_period 24x7 notification_options w, u, c, r, f, s contact_groups unixadmins action_url /nagios/pnp/index.php?host=$HOSTNAME$&srv=$SERVICEDESC$ } </pre> </blockquote> <pre wrap=""> Where is your define command? </pre> <blockquote type="cite"> <pre wrap=""> And the result in Nagios: HTTP WARNING: HTTP/1.1 400 No Host matches server name seth </pre> </blockquote> <pre wrap=""> Hrm... this is odd, looks like you are posting the right host entry (would still like to see the command definition). The host entry for "seth", is the address defined the same as the IP you are getting when you telnet to the name? ie: define host { host_name seth address 10.1.1.23 } </pre> </blockquote> </body> </html>