Thanks for the note - patches will be in CVS shortly.
On 4 Mar 2005 at 18:17, John Warburton wrote:
> OK
>
> Since no-one has responded (does anyone else live here?), I will
> report back as to what I had found...
>
> One of our other admins set up a host definition without a
> check_command. This is fine, as the documentation says "If you leave
> this argument blank, the host will not be checked - Nagios will always
> assume the host is up." (see
> http://nagios.sourceforge.net/docs/2_0/ ... .html#host)
>
> Unfortunately, the code, when displaying host specific stuff (eg the
> "Host Detail" button, or 2-D status map), will assume that there is a
> value in the data structure for "plugin_output".
>
> This explains my seg fault.
>
> I can verify this by looking in /usr/local/nagios/var/retention.dat
> and the "plugin_output" entries for these hosts is empty.
>
> To "fix", I stopped Nagios, edited the retention.dat file and put some
> text into the plugin_output field and restarted Nagios. The Host
> Details and 2D Status Map all came back!
>
> These hosts now all have a check in place as well.
>
> So, is there any chance for a change in the code to set plugin_output
> to a default null value (eg N/A) - whether host checks are made or
> not? Or, for the host printout code being more able to cope with
> variables not set.
>
> Regards
>
> John
>
> On 3/03/2005 8:37 PM, John Warburton wrote:
>
> > Hi All
> >
> > I am running Nagios 2 beta - CVS snapshot Feb 24 19:47 2005 on
> > Solaris 8.
> >
> > I have a problem where my host detail and status map options in the
> > left frame will die with a segmentation fault after displaying some
> > of my hosts. The number of hosts depends on the sort options.
> >
> > Note that the "service detail" option will display *all* hosts and
> > *all* services. Weird.
> >
> > I am guessing I am hitting some sort of problem, where the code
> > expects to see something in memory, but it is not there. I think it
> > may be in my hosts definition, but I have 25 hosts defined so not
> > sure if I have a typo in any of the definitions.
> >
> > Each entry basically looks like:
> > define host{
> > host_name nemesis
> > alias db server
> > address 1.2.3.4
> > check_command check-host-alive
> > max_check_attempts 5
> > contact_groups nagios-admins
> > notification_interval 30
> > notification_period 24x7
> > notification_options d,u,r
> > }
> >
> > Some hosts (not all) have partially filled out hostextinfo entries:
> > define hostextinfo{
> > host_name thunderbird
> > notes IMAP/POP3 Server
> > notes_url URL
> > action_url URL
> > icon_image sun/ppserve450-68sm.jpg
> > icon_image_alt Sun E450 Server
> > }
> >
> > I can run the status CGI from the command line:
> > export REMOTE_USER=userid
> > export REQUEST_METHOD=GET
> > export
> > QUERY_STRING='hostgroup=all&style=hostdetail&sorttype=2&sortoption=4
> > '
> >
> > $ pwd
> > /usr/local/nagios/src/nagios-cvs/cgi
> >
> > $ /usr/local/bin/gdb ./status.cgi
> > (gdb) run
> > Starting program: /usr/local/nagios/src/nagios-cvs/cgi/status.cgi
> > Cache-Control: no-store Pragma: no-cache Refresh: 90 Last-Modified:
> > Thu, 03 Mar 2005 09:31:51 GMT Expires: Thu, 01 Jan 1970 00:00:00 GMT
> > Content-type: text/html
> >
> >
> >
> >
> > Current Network Status
> > .
> > .
> > .
> > .
> > 17d 1h 35m 54s
> >
> > Program received signal SIGSEGV, Segmentation fault.
> > 0xff2b3218 in strlen () from /lib/libc.so.1
> >
> > (gdb) where
> > #0 0xff2b3218 in strlen () from /lib/libc.so.1
> > #1 0xff306530 in _doprnt () from /lib/libc.so.1
> > #2 0xff3081d0 in printf () from /lib/libc.so.1
> > #3
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