Hi Josh, You can, I believe, define a host using it's DNS name, however I and I'm sure the rest of the community would discourage that for the simple reason that if the DNS doesn't resolve, that host will be deemed down.
However to check a website you can still add the host via it's IP address and add a check_http service check to that host, and instruct check_http to check the host header of the website (e.g. www.example.com, using the -H option). Regards, Andy Josh Wells wrote: > Is it possible to define a host using URL rather than IP address? > > > ------------------------------------------------------------------------ > *From:* Ben O'Hara [mailto:[EMAIL PROTECTED] > *Sent:* Monday, October 20, 2008 12:34 PM > *To:* Josh Wells > *Cc:* nagios > *Subject:* Re: [Nagios-users] How do I check if a website is up? > > What i have done in the past is, > > a) create a host for www.example.com <http://www.example.com> > b) ceate a host group - "External" > c) stick www.example.com <http://www.example.com> in Eternal group > ) add service check to host > > Yu can then add numberous external checks into the group or check > other services on the host. > > Seemed to make sense that way for me back then > > Ben > > On Mon, Oct 20, 2008 at 6:17 PM, Josh Wells <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > > Ok I defined the command as you specified in my commands.cfg file. I > then added a service definition in my localhost.cfg file using that > command. It appears to be working. How do I configure an alert for > this > type of check? I would like to be notified if the website is not > reachable for more than say 5 minutes. Also while this is functional I > don't really like that this website check is showing up under my > nagios > server host. I would prefer that it have its own host definition or at > least appear separately from the other hosts. Is it possible to do > this > using a URL? > > Thanks for your help. I used the quickstart guide to get my server up > and running so still pretty green with nagios but I'm learning. > > Josh > > > -----Original Message----- > From: Assaf Flatto [mailto:[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>] > Sent: Monday, October 20, 2008 11:03 AM > To: Nagios User list > Subject: Re: [Nagios-users] How do I check if a website is up? > > No , you don't have to define a host . > > you define a service check with the fix parameters ( as i gave in the > previous mail ) and assign this check to an existing host . > > that host will execute the check and report the status returned > from the > command ( personally i'd run it from the nagios server itself) . > > > On Monday 20 October 2008 15:58:25 Josh Wells wrote: > > Ok so if the website is external to my network I need to create > a host > > definition? What would that look like for a URL? I've only made host > > definitions for internal hosts using the IP address. Because the > website > > is a hosted solution I would rather define it by URL than IP > address. > Is > > this possible? > > > > > > > > -----Original Message----- > > From: Assaf Flatto [mailto:[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>] > > Sent: Monday, October 20, 2008 10:46 AM > > To: nagios-users@lists.sourceforge.net > <mailto:nagios-users@lists.sourceforge.net> > > Subject: Re: [Nagios-users] How do I check if a website is up? > > > > Not nessaceily . > > > > If you have that website in your network , you can just define the > > check_http check to that host. > > also you can add in one of the parameters the specific URL you > wish to > > query . > > > > -u, --url=PATH > > URL to GET or POST (default: /) > > > > > > Or you can define a check on the nagios server it self to query the > web > > site like this : > > > > # 'check_website' command definition > > define command{ > > command_name check_website > > command_line $USER1$/check_http -H www.website.com > <http://www.website.com> > > } > > > > > > If not , then you need to build a new host definition and service > check > > for that host . > > > > On Monday 20 October 2008 15:18:53 Josh Wells wrote: > > > Do I have to define a remote host such as www.website.com > <http://www.website.com> in order > to > > > apply the check_http service against that host? > > > > -- > > Assaf Flatto > SSP Ops Team > Linux System Administrator > > > > > > IMPORTANT . this email and the information in it may be confidential, > legally > privileged and/or protected by law. 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