./hobbit-4.1.2p1/hobbitd/etcfiles 🔗 link

On Fri, Jan 06, 2006 at 11:45:41AM +0100, Rolf Schrittenlocher wrote:

am I right that the files in ./hobbit-4.1.2p1/hobbitd/etcfiles are only for documentation and upgrade-checks and aren't used in runtime (so they shouldn't be modified?)

 
From: Michael Frey [mailto:user-0d6bef7dd02b@xymon.invalid] 
Sent: Friday, January 06, 2006 11:00 AM
To: user-ae9b8668bcde@xymon.invalid
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? 

Thanks

Michael Frey


This message, and any attachments to it, may contain information that
is privileged, confidential, and exempt from disclosure under
applicable law. If the reader of this message is not the intended
recipient, you are notified that any use, dissemination, distribution,
copying, or communication of this message is strictly prohibited. If
you have received this message in error, please notify the sender
immediately by return e-mail and delete the message and any
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*From:* Michael Frey [mailto:user-0d6bef7dd02b@xymon.invalid]
*Sent:* Friday, January 06, 2006 11:00 AM
*To:* user-ae9b8668bcde@xymon.invalid
*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?

From: Michael Frey [mailto:user-0d6bef7dd02b@xymon.invalid] Sent: Friday, January 06, 2006 11:00 AM
To: user-ae9b8668bcde@xymon.invalid
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


This message, and any attachments to it, may contain information that
is privileged, confidential, and exempt from disclosure under
applicable law.  If the reader of this message is not the intended
recipient, you are notified that any use, dissemination, distribution,
copying, or communication of this message is strictly prohibited.  If
you have received this message in error, please notify the sender
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On 1/6/06, Michael Frey <user-0d6bef7dd02b@xymon.invalid> 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


 *Charles Jones <user-e86b4aeade4e@xymon.invalid>*

01/06/2006 11:29 AM  Please respond to
user-ae9b8668bcde@xymon.invalid

   To
user-ae9b8668bcde@xymon.invalid  cc

 Subject
Re: [hobbit] linux version

• Sent:* Friday, January 06, 2006 11:00 AM*
To:* *user-ae9b8668bcde@xymon.invalid* <user-ae9b8668bcde@xymon.invalid>*
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,

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


* This message, and any attachments to it, may contain information that
is privileged, confidential, and exempt from disclosure under
applicable law. If the reader of this message is not the intended
recipient, you are notified that any use, dissemination, distribution,
copying, or communication of this message is strictly prohibited. If
you have received this message in error, please notify the sender
immediately by return e-mail and delete the message and any
attachments. Thank you. *

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:user-0d6bef7dd02b@xymon.invalid_] *
Sent:* Friday, January 06, 2006 11:00 AM*

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


*This message, and any attachments to it, may contain information that
is privileged, confidential, and exempt from disclosure under
applicable law. If the reader of this message is not the intended
recipient, you are notified that any use, dissemination, distribution,
copying, or communication of this message is strictly prohibited. If
you have received this message in error, please notify the sender
immediately by return e-mail and delete the message and any
attachments. Thank you. *

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:user-0d6bef7dd02b@xymon.invalid] Sent: Friday, January 06, 2006 11:00 AM
To: user-ae9b8668bcde@xymon.invalid
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 
This message, and any attachments to it, may contain information that
is privileged, confidential, and exempt from disclosure under
applicable law. If the reader of this message is not the intended
recipient, you are notified that any use, dissemination, distribution,
copying, or communication of this message is strictly prohibited. If
you have received this message in error, please notify the sender
immediately by return e-mail and delete the message and any
attachments. Thank you.

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:user-0d6bef7dd02b@xymon.invalid_] *
Sent:* Friday, January 06, 2006 11:00 AM*
To:* user-3f509a273d1e@xymon.invalid_ <mailto:user-ae9b8668bcde@xymon.invalid>*
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


*This message, and any attachments to it, may contain information that
is privileged, confidential, and exempt from disclosure under
applicable law. If the reader of this message is not the intended
recipient, you are notified that any use, dissemination, distribution,
copying, or communication of this message is strictly prohibited. If
you have received this message in error, please notify the sender
immediately by return e-mail and delete the message and any
attachments. Thank you. *

To
Michael Frey <user-0d6bef7dd02b@xymon.invalid>
cc
user-ae9b8668bcde@xymon.invalid
Subject
Re: [hobbit] linux version


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:user-0d6bef7dd02b@xymon.invalid] Sent: Friday, January 06, 2006 11:00 AM
To: user-ae9b8668bcde@xymon.invalid
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 
This message, and any attachments to it, may contain information that
is privileged, confidential, and exempt from disclosure under
applicable law. If the reader of this message is not the intended
recipient, you are notified that any use, dissemination, distribution,
copying, or communication of this message is strictly prohibited. If
you have received this message in error, please notify the sender
immediately by return e-mail and delete the message and any
attachments. Thank you.

Michael Frey wrote:

This is what I get when I run the ldd

[root at nbtbigbro1 bin]# ldd hobbitgraph.cgi
        librrd.so.2 => /usr/local/rrdtool-1.2.11/lib/librrd.so.2 (0x40018000)
        libpng.so.2 => /usr/lib/libpng.so.2 (0x400ec000)
        libc.so.6 => /lib/i686/libc.so.6 (0x4010d000)
        libm.so.6 => /lib/i686/libm.so.6 (0x40248000)
        libz.so.1 => /usr/lib/libz.so.1 (0x4026b000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)


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:user-0d6bef7dd02b@xymon.invalid_] *
Sent:* Friday, January 06, 2006 11:00 AM*
To:* user-3f509a273d1e@xymon.invalid_ <mailto:user-ae9b8668bcde@xymon.invalid>*
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


*This message, and any attachments to it, may contain information that
is privileged, confidential, and exempt from disclosure under
applicable law. If the reader of this message is not the intended
recipient, you are notified that any use, dissemination, distribution,
copying, or communication of this message is strictly prohibited. If
you have received this message in error, please notify the sender
immediately by return e-mail and delete the message and any
attachments. Thank you. *

Michael Frey wrote:

My cgi-error log shows:
libpng warning: Application was compiled with png.h from libpng-1.2.8
libpng warning: Application  is running with png.c from libpng-1.0.12
libpng error: Incompatible libpng version in application and library


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:user-0d6bef7dd02b@xymon.invalid_] *
Sent:* Friday, January 06, 2006 11:00 AM*
To:* user-3f509a273d1e@xymon.invalid_ <mailto:user-ae9b8668bcde@xymon.invalid>*
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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Michael Frey
Intel Senior Systems Engineer
The Guardian Life Insurance Company of America
XXXX Burgess Place, 2-West
Bethlehem, PA XXXXX
E-Mail: user-0d6bef7dd02b@xymon.invalid
Phone: XXX-XXX-XXXX
Fax: XXX-XXX-XXXX

To
Michael Frey <user-0d6bef7dd02b@xymon.invalid>
cc
user-ae9b8668bcde@xymon.invalid
Subject
Re: [hobbit] linux version


Ah so there is the problem.  Have you "moved" this hobbit installation from another server, or upgraded the OS?  From the looks of the error you have an older libpng than what hobbit was compiled with. Your choices would seem to be to upgrade libpng, or recompile hobbit with your current libpng.

-Charles

Michael Frey wrote: 
My cgi-error log shows: libpng warning: Application was compiled with png.h from libpng-1.2.8 libpng warning: Application  is running with png.c from libpng-1.0.12 libpng error: Incompatible libpng version in application and library


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:user-0d6bef7dd02b@xymon.invalid] Sent: Friday, January 06, 2006 11:00 AM
To: user-ae9b8668bcde@xymon.invalid
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 
This message, and any attachments to it, may contain information that
is privileged, confidential, and exempt from disclosure under
applicable law. If the reader of this message is not the intended
recipient, you are notified that any use, dissemination, distribution,
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On Fri, Jan 06, 2006 at 10:24:23AM -0700, Charles Jones wrote:

My cgi-error log shows:
libpng warning: Application was compiled with png.h from libpng-1.2.8
libpng warning: Application  is running with png.c from libpng-1.0.12
libpng error: Incompatible libpng version in application and library

Ah so there is the problem.  Have you "moved" this hobbit installation from another server, or upgraded the OS?  From the looks of the error you have an older libpng than what hobbit was compiled with. Your choices would seem to be to upgrade libpng, or recompile hobbit with your current libpng.

Michael Frey
Intel Senior Systems Engineer
The Guardian Life Insurance Company of America
XXXX Burgess Place, 2-West
Bethlehem, PA XXXXX
E-Mail: user-0d6bef7dd02b@xymon.invalid
Phone: XXX-XXX-XXXX
Fax: XXX-XXX-XXXX

On Fri, Jan 06, 2006 at 10:24:23AM -0700, Charles Jones wrote:

My cgi-error log shows:
libpng warning: Application was compiled with png.h from libpng-1.2.8
libpng warning: Application  is running with png.c from libpng-1.0.12
libpng error: Incompatible libpng version in application and library

Ah so there is the problem.  Have you "moved" this hobbit installation 
from another server, or upgraded the OS?  From the looks of the error 
you have an older libpng than what hobbit was compiled with. Your 
choices would seem to be to upgrade libpng, or recompile hobbit with 
your current libpng.

Note that libpng is not used directly by Hobbit. It is pulled in by
rrdtool, so you may have to re-compile rrdtool also.


Henrik


This message, and any attachments to it, may contain information that
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you have received this message in error, please notify the sender
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