Re: [hobbit] linux version

[Charles Jones <jonescr (at) cisco.com>]

Michael,

I also forgot to mention the other thing to check for is cgi execution 
issues.  Your webserver should be configured to execute cgi in the 
specified hobbit-cgi directory, otherwise it can cause similar problems 
to what you are seeing. I recommend checking your 
/var/log/httpd/error_log and see if there are any cgi permissions errors.

My server has an /etc/httpd/conf.d/hobbit.conf, which contains all of 
the directory aliases and defines permissions for the cgi directories. 
You should have one as well, either there or appended to your 
/etc/httpd/conf/httpd.conf file.

-Charles

Charles Jones wrote:

> Michael,
>
> Yes it looks like an issue with libpng. Verify this by going to your 
> hobbit directory, then cd to the "bin" directory, and run the ldd 
> command on hobbitgraph.cgi.  This will show all the libs that 
> hobbitgraph expects to find, and if it has access to them or not.  
> Here is a sample output from my hobbit server:
>
> # ldd hobbitgraph.cgi
>         libpcre.so.0 => /lib/libpcre.so.0 (0x0098d000)
>         librrd.so.2 => /usr/local/rrdtool-1.2.11/lib/librrd.so.2 
> (0x00d35000)
>         libpng12.so.0 => /usr/lib/libpng12.so.0 (0x00be1000)
>         libc.so.6 => /lib/tls/libc.so.6 (0x005cf000)
>         libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x00804000)
>         libz.so.1 => /usr/lib/libz.so.1 (0x00726000)
>         libart_lgpl_2.so.2 => /usr/lib/libart_lgpl_2.so.2 (0x0044d000)
>         libm.so.6 => /lib/tls/libm.so.6 (0x006fb000)
>         /lib/ld-linux.so.2 (0x005b6000)
>
> I'm guessing that for you libpng is missing.  If you already have it, 
> but its in the wrong place, the fix can be as simple as making a 
> symlink to it, or copying it to where hobbit expects it to be.  Other 
> solutions include editing your /etc/ld.so.conf (run ldconfig 
> afterwards), or recompiling hobbit and giving it the exact location of 
> libpng.
>
> -Charles
>
> Michael Frey wrote:
>
> > The specific issue I am having is with the history graphs drawing. 
> >  Everything else is working fine.
> > see screenshot:
> >
> >
> > They used to work, but after a reboot, they failed.  I recall having 
> > to manually copy ldpng somewhere, but that is it.
> >
> > I know I am in over my head with the linux piece, but it worked 
> > before, and I am sure it is a simple fix; I just can't figure it out.
> >
> > I have some great resources here that know linux, but they are at a 
> > loss with the pieces hobbit uses.
> >
> > Any suggestions for the cgi-graphing would simplify everything, as I 
> > would eave the current build running.
> >
> > Michael Frey
> >
> >
> > ------------------------------------------------------------------------
> >
> > *From:* Michael Frey [_mailto:michael_frey (at) glic.com_] *
> > Sent:* Friday, January 06, 2006 11:00 AM*
> > To:* _hobbit (at) hswn.dk_ <mailto:hobbit (at) hswn.dk>*
> > Subject:* [hobbit] linux version
> >
> > I have had a linux rh 7.3 server running, and have had issues with 
> > the history graphs.
> >
> > I tried to upgrade to Fedora C3, bit that looks to be missing some 
> > important pieces.
> > What would be the recommended version of Linux to avoid all of these 
> > isuues?
> >
> > Redhat 9?
> >
> > Michael,
> >
> > What missing important pieces?  I have run hobbit on Redhat9, Fedora 
> > Core 3, Fedora Core 4, Centos 3.x, Centos 4.x, and Solaris 10.
> >
> > All of the installs required fulfilling various dependencies like 
> > rrdtool, libpng, etc. I would say the easiest install I did was on 
> > FC4...I'm not sure you will find an OS that will have all of hobbits 
> > dependencies available in the base packages branch, but with any 
> > decently new distro you should have pretty much everything available 
> > except rrdtool.  
> >
> > If you are the kind of person who prefers to use RPMs for everything, 
> > check out Dags (_http://dag.wieers.com/home-made/apt/packages.php_), 
> > they have RPMs for most distros (redhat 7,9,fc1-4,EL3-4) including 
> > fping and rrdtool.  You can either download the rpms manually or add 
> > dag to your yum.conf so you can just do "yum install rrdtool" and it 
> > will automatically grab the dependencies too.
> >
> > Note I don't recommend this method for everyone...some people are 
> > paranoid (rightfully so if security is a concern) and refuse to 
> > install binary releases and only install manually from tarballs.
> >
> > -Charles
> >
> > ------------------------------------------------------------------------
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