The Perfect Server - Ubuntu 12.10 (nginx, BIND, Dovecot, ISPConfig 3) - Page 3
4 Get root Privileges
After the reboot you can login with your previously created username (e.g. administrator). Because we must run all the steps from this tutorial with root privileges, we can either prepend all commands in this tutorial with the string sudo, or we become root right now by typing
(You can as well enable the root login by running
sudo passwd root
and giving root a password. You can then directly log in as root, but this is frowned upon by the Ubuntu developers and community for various reasons. See http://ubuntuforums.org/showthread.php?t=765414.)
5 Install The SSH Server (Optional)
If you did not install the OpenSSH server during the system installation, you can do it now:
apt-get install ssh openssh-server
From now on you can use an SSH client such as PuTTY and connect from your workstation to your Ubuntu 12.10 server and follow the remaining steps from this tutorial.
6 Install vim-nox (Optional)
I'll use vi as my text editor in this tutorial. The default vi program has some strange behaviour on Ubuntu and Debian; to fix this, we install vim-nox:
apt-get install vim-nox
(You don't have to do this if you use a different text editor such as joe or nano.)
7 Configure The Network
Because the Ubuntu installer has configured our system to get its network settings via DHCP, we have to change that now because a server should have a static IP address. Edit /etc/network/interfaces and adjust it to your needs (in this example setup I will use the IP address 192.168.0.100 and the DNS servers 184.108.40.206 and 220.127.116.11 - starting with Ubuntu 12.04, you cannot edit /etc/resolv.conf directly anymore, but have to specify your nameservers in your network configuration - see
for more details):
Then restart your network:
Then edit /etc/hosts. Make it look like this:
echo server1.example.com > /etc/hostname
Both should show server1.example.com now.
If you want to use IPv6 addresses with your nginx vhosts, please do the following before you create IPv6 vhosts in ISPConfig:
... and add the line net.ipv6.bindv6only = 1:
... afterwards for the change to take effect.
8 Edit /etc/apt/sources.list And Update Your Linux Installation
Edit /etc/apt/sources.list. Comment out or remove the installation CD from the file and make sure that the universe and multiverse repositories are enabled. It should look like this:
to update the apt package database and
to install the latest updates (if there are any). If you see that a new kernel gets installed as part of the updates, you should reboot the system afterwards:
9 Change The Default Shell
/bin/sh is a symlink to /bin/dash, however we need /bin/bash, not /bin/dash. Therefore we do this:
Use dash as the default system shell (/bin/sh)? <-- No
If you don't do this, the ISPConfig installation will fail.
10 Disable AppArmor
AppArmor is a security extension (similar to SELinux) that should provide extended security. In my opinion you don't need it to configure a secure system, and it usually causes more problems than advantages (think of it after you have done a week of trouble-shooting because some service wasn't working as expected, and then you find out that everything was ok, only AppArmor was causing the problem). Therefore I disable it (this is a must if you want to install ISPConfig later on).
We can disable it like this:
11 Synchronize the System Clock
It is a good idea to synchronize the system clock with an NTP (network time protocol) server over the Internet. Simply run
apt-get install ntp ntpdate
and your system time will always be in sync.