Install MRTG on RH9 in 10 Easy Steps

thanks!
but i use PHP Sys Info
http://www.liquidexploit.com/stats/

 

error: Failed dependencies:
perl >= 5.004 is needed by mrtg-2.9.17-1cpanel
:-/

and cpanel downgraded perl a while ago i think

 

Perl should be over 5.004 on your machine... here's what my RH 9 machine shows:

root@dallas [~]# perl -v
This is perl, v5.8.1 built for i686-linux.


MRTG install on RH 9 works fine for me, I haven't seen any issues besides the one that you posted. What does your perl -v show?

- Matt

 

This is perl, v5.8.0 built for i386-linux-thread-multi

 

I can also report this is stable with fedora core 1 based o/s servers no issues on 17 machines.

Stuart

 

getting

error while loading shared libraries: libpng.so.2?

When I goto my IP/mrtg get HTTP 404 Not Found?

 

you can remove the file and re add the symbolic link then restart / stop a number of times the error should clear.

 

sorry newbie here!

how do I re-add the symlink?

 

Just tried

rm libpng.so.2
ln -s libpng.so.3 libpng.so.2

and still getting

/usr/bin/rateup: error while loading shared libraries: libpng.so.2: cannot open shared object file: No such file or directory

 

What version of linux are you using ?

 

ahh! just checked RH 7.3!

sorry for wasting your time, guess I cant have it then?

 

It should do I got it working with redhat 7 & 8 heres the exact commands i used.

SSH in to your server as root

use the following commands as posted in this order

1. rpm -e mrtg
This removes any existing mrtg rpm that may be installed.
2. rpm http://download.cheetaweb.com/mrtg-2.9.17-1cpanel.i386.rpm -Uhv
This will install the RPM & download from a server using this file.
3. cd /usr/lib
This takes you to the /usr/lib directory on the server hard disk
4. locate libpng.so.2.old
This will check if the file exists already if it does follow step ( a ) if not goto step 5
( a ) rm -f libpng.so.2.old
This command will remove the old file only called libpng.so.2.old in /usr/lib
5. mv libpng.so.2 libpng.so.2.OLD
this moves the file to the .old file ( Backup )
6. ln -s libpng.so.3 libpng.so.2
This create the sybolic link to the libpng2.so.2 file to the files as required.
7. pico /etc/sysconfig/i18n
This opens the pine editor to allow you to edit the mrtg config files.
8. change LANG to LANG="en_US"
The line is the top line you need to remove some parts of the txt beyond "en_US.xxxx" so that the statement is as stated above on part 8
9. service mrtg start/stop
You need to do this a few times if the errors continue beyond 5 times you need to follow an extra few line if the errors stop showing on the 4/5th attempt you can jump to part 13
10. cd /usr/bin
this takes you to /usr/bin ( Be Very Carefull )
11. rm -f *.old
This removes the files that are causing the error as they may/may not exist.
12. service mrtg start/stop run 4 times
Run this and mrtg should start ok.
13. chkconfig --add mrtg
Add this line by typing the command in ssh.
14. load your browser and http://ip/mrtg/
loading mrtg in your browser note this needs to be the server IP not a non main ip.

This has been tested on cpanel servers running redhat 7.2, 8.0, 9.0 & Fedora you should only do this if you know what your doing. If you lease a server from a provider your find that most will be willing to install it for you or seek a server admin who knows what they are doing there are many about.

Again this is more help to the origanal poster on this thread and is treated as an addon for help with those who need a bit more help.

Stuart

 

Cheers for that stuart, I needed to reinstall libpng using WHM.

If i re-intstalled the RPM before step 12 mrtg was able to locate the libpng.so.2 file.

 

Glad it worked out for you.

 

(1) I got the errors only twice. No error printed when I started it the third time.

(2) Initially I got "Page Not Found" when pointing to http://my_IP/mrtg/ . I have to add an alias to httpd.conf and restart httpd before I could see the graphs.

(cd to the proper directory ....)
pico httpd.conf
(add this to the very top of the page ....)
Alias /mrtg/ /usr/local/apache/htdocs/mrtg/
(saved the file ....)
service httpd restart

 

Here's what I get. I skipped step 4 since locate didnt find any file:

root@mybox [/usr/lib]# cd /usr/lib
root@mybox [/usr/lib]# locate libpng.so.2.old
root@mybox [/usr/lib]# mv libpng.so.2 libpng.so.2.OLD
mv: can't stat source libpng.so.2

Not sure what that last line meant so I figured I'd stop for a bit.

Any ideas?

 

im getting the same error anyone know how to fix this?

 

I am not an expert in Linux, but I recieved it too. I think it just means the original file was not found. Which is totally fine. I think it was supposed to just make a backup of the file there if it already existed.

The only problem I had that was not addressed in the ORIGINAL post (but later covered in this thread) was that there was no instructions to include an Alias in the httpd.conf file. I added that per the instructions given and rebooted Apache.

I now have a nice working copy of MRTG.

Many thanks for the handy instructions ya'll!

 

Part of mrtg seems to be broken -- below is the error list. I am getting good results except that trying to view mail statistics gives a page not found error.

Any suggestions?

Thanks much!

WARNING: Could not get any data from external command '/etc/mrtg/mailstats'
Maybe the external command did not even start. (Illegal seek)

WARNING: Problem with External get '/etc/mrtg/mailstats':
Expected a Number for 'in' but nothing'

WARNING: Problem with External get '/etc/mrtg/mailstats':
Expected a Number for 'out' but nothing'

ERROR: Target[mail][_IN_] ' $target->[8]{$mode} ' did not eval into defined data
ERROR: Target[mail][_OUT_] ' $target->[8]{$mode} ' did not eval into defined data
WARNING: Skipping Update of mail, inlast is not defined
WARNING: Skipping Update of mail, outlast is not defined