Ubuntu Linux + Apache2 + Virtual Hosts + Syslog Server

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This tutorial will explain How to install syslog server in ubuntu using apache. Steps Involved in this tutorial
1) Install Apache2 and change the ports
2) Virtual Hosts: an example
3) Syslog Server with php and Virtual Hosts
4) Only me wants to see the log files (by using a .htacces file)

Local static ip address

Imagine yourself that eth0 is your internet interface and you want as your local ip address. Change the /etc/network/interface file and save it. This is an excellent example then:

auto eth0
iface eth0 inet static

Ofcourse you'll have to modify it for your own needs, the above file is just an example file ofcourse.

Preparing syslog

mkdir /logs (let's make a directory for our logs) Modify /etc/syslog.conf and add the next rule if you really would like to log everything: (don't forget to save it) *.* /logs/logger.log

It's possible you're only interessed in a few things, here is the list:

auth -- authentication (login) messages
cron -- messages from the memory-resident scheduler
daemon -- messages from resident daemons
kern -- kernel messages
lpr -- printer messages (used by JetDirect cards)
mail -- messages from Sendmail
user -- messages from user-initiated processes/apps
local0-local7 -- user-defined (see below)
syslog -- messages from the syslog process itself

0 -- Emergency (emerg)
1 -- Alerts (alert)
2 -- Critical (crit)
3 -- Errors (err)
4 -- Warnings (warn)
5 -- Notification (notice)
6 -- Information (info)
7 -- Debug (debug)

Would you like to log everything from auth, cron, lpr error and only syslogs warnings then you have to add next lines to /etc/syslog.conf

auth.* /logs/logger.log
cron.* /logs/logger.log
kern.* /logs/logger.log
lpr.3 /logs/logger.log
syslog.4 /logs/logger.log

Now modify /etc/init.d/ksyslogd with your favourite editor and do the next:

SYSLOGD=”” Change this line by the next line and save:
SYSLOGD=”-r -m0”

restart networking again: /etc/init.d/networking restart

Install Apache2 and stuff:

apt-get install apache2 php5 libapache2-mod-php5 mysql-server mysql-client


Check cat /etc/hostname, and the hostname that you are seeing here you have to

place in your /etc/hosts file, together with your local static ip address. /etc/hosts: myhostname Don't forget to change the above to your own needs! I decided to host on Port 8070, my ISP (Telenet Belgium) has blocked all ports under 1024. Modify /etc/apache2/ports.conf: (Listen 80 must be replaced by Listen 8070)
Listen 8070

If you are behind a NAT, don't forget to open this port on your router.

Now we're going to install our virtual hosts. cd /etc/apache2/sites-available
touch myname.homelinux.com (we create our name)
Now edit your myname.homelinux.com file with your favorite editor and make sure it looks like this:

ServerAdmin [email protected]
ServerName myname.homelinux.com
ServerAlias myname.homelinux.com
DirectoryIndex index.php
DocumentRoot /logs

Ok, now we're going to etc/apache2/sites-enabled

cd /etc/apache2/sites-enabled
ln -s /etc/apache2/sites-available/myname.homelinux.com myname.homelinux.com This symbolic link (ln -s) is absolutely necessary. Ok, now we're going to our logs directory and we place there an index.php file cd /logs
touch index.php
Modify index.php now with your favorite editor. This is how it should look like:

Restart apache: /etc/init.d/apache2 force-reload

Ok, go to www.dyndns.com and www.whatsmyip.org (memorize your ip)
And on dyndns you registrate yourself, you log in, then click DNS services ->

dynamic DNS -> Add Host -> and you registrate myname.homelinux.com.

Mention your remote IP (what you saw at whatsmyip.org at the ip line)

If you visit now your myname.homelinux.com/:8070 webpage you will be able to see your syslogs!

4) Only me wants to see the log files (by using a .htacces file)

Now we take measures: Only you will have the possibility to see your syslogs.

cd /logs (Yes we go again to the /logs directory)
touch .htaccess (We'll make an .htaccess file)
Modify .htaccess with your favorite editor. This is how your .htaccess file should look like:

AuthUserFile /root/.htpasswd
AuthName ‘Access is limited here'
AuthType basic
require valid-user

cd /root (go to the /root directory)
htpasswd -c .htpasswd webmaster (let's make a valid account)

Now modify the /etc/apache2/sites-available/default file with your favorite editor:

DocumentRoot /var/www

Options FollowSymLinks
AllowOverride None

Options Indexes FollowSymLinks MultiViews
AllowOverride All
Order allow,deny
allow from all
# Uncomment this directive is you want to see apache2's
# default start page (in /apache2-default) when you go to /
#RedirectMatch ^/$ /apache2-default/

This AllowOverride all tells apache2 it has to deal with a .htaccess file.
Restart apache2 again: /etc/init.d/apache2 force-reload

Go to your site now, you'll have to give a password that you've specified.


Now you have a syslog server that's using the virtual host technique on apache2. And only you is able to read the information, caused by the .htaccess file.

By phar0z | [email protected]

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11 thoughts on “Ubuntu Linux + Apache2 + Virtual Hosts + Syslog Server

  1. no problem! sorry for the little font, I was a little bit absent-minded. I hope the admin can enlarge the font :)


  2. i use the logs “/var/logs”

    /etc/init.d/ksyslogd is wrong. the name of the daemon is “sysklogd”
    and I didn’t modify anything, because ‘SYSLOGD=”-u syslog”‘ logs already what i need to know.


  3. Must have missed something above, as I have done it 3x now from start to finish and still don’t have the server seeing the outside world yet.

    VirtualHost *:443 -- mixing * ports and non-* ports with a NameVirtualHost address is not supported, proceeding with undefined results
    [Fri Dec 07 21:48:37 2007] [warn] NameVirtualHost xxx.xxx.xxx.xxx has no VirtualHosts
    [Fri Dec 07 21:48:37 2007] [warn] NameVirtualHost neaveillmin.org:0 has no VirtualHosts
    [Fri Dec 07 21:48:37 2007] [warn] NameVirtualHost localhost:0 has no VirtualHosts
    [Fri Dec 07 21:48:37 2007] [warn] NameVirtualHost localhost:0 has no VirtualHosts


  4. PLease assist

    On Localhost i can see my webpage following your procedure. I can FTP into this via http://www.myname.homelinux.com, dir meanining that dynamic dns is working. I have open port 80 for port forwarding as well as port 21. But i can not open my webpage via wwww. Any ideas or next thing to check. Your help would be appreciated.


  5. larger font: hold the “Cntrl” key and use your middle scroll wheel on your mouse… no middle scroll wheel? Time to upgrade a bit… ;-)


  6. I believe I have followed all instructions to the letter but I get an Alert “The URL is not valid and cannot be loaded” a few seconds after my test index.html is displayed. This is really strange because everything seems to work OK until that alert pops up. I am setting up ubutu 8.10 with apache2 using vhost.


  7. I’ve followed the steps to the letter (I believe) and when I go to the newly created web page I get this:

    Warning: fopen(logger.log) [function.fopen]: failed to open stream: Permission denied in /var/log/index.php on line 8
    Error while reading log file :(

    Did I miss something?


  8. Actually I did. I had to run “sudo chmod o=r logger.log” to give the “Other” group read permission to the log file itself. Once that was done, I had no problems seeing the webpage.

    Hope this helps others in the future.


  9. I had also the same problem while I was executing the following code.


    Another problem is that, the solution given by you works only with the existing file.
    Now, what if I want to open a file which is not exist, than what about the permission of that file.


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