CentOS 5.1 Server Setup: LAMP, Email, DNS, FTP, ISPConfig (a.k.a. The Perfect Server) - Page 4

8 Quota

(If you have chosen a different partitioning scheme than I did, you must adjust this chapter so that quota applies to the partitions where you need it.)

To install quota, we run this command:

yum install quota

Edit /etc/fstab and add ,usrquota,grpquota to the / partition (/dev/VolGroup00/LogVol00):

vi /etc/fstab

/dev/VolGroup00/LogVol00 /                       ext3    defaults,usrquota,grpquota        1 1
LABEL=/boot             /boot                   ext3    defaults        1 2
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
/dev/VolGroup00/LogVol01 swap                    swap    defaults        0 0

Then run

touch /aquota.user /aquota.group
chmod 600 /aquota.*
mount -o remount /
quotacheck -avugm
quotaon -avug

to enable quota.


9 Install A Chrooted DNS Server (BIND9)

To install a chrooted BIND9, we do this:

yum install bind-chroot

Then do this:

chmod 755 /var/named/
chmod 775 /var/named/chroot/
chmod 775 /var/named/chroot/var/
chmod 775 /var/named/chroot/var/named/
chmod 775 /var/named/chroot/var/run/
chmod 777 /var/named/chroot/var/run/named/
cd /var/named/chroot/var/named/
ln -s ../../ chroot
cp /usr/share/doc/bind-9.3.3/sample/var/named/named.local /var/named/chroot/var/named/named.local
cp /usr/share/doc/bind-9.3.3/sample/var/named/named.root /var/named/chroot/var/named/named.root
touch /var/named/chroot/etc/named.conf
chkconfig --levels 235 named on
/etc/init.d/named start

BIND will run in a chroot jail under /var/named/chroot/var/named/. I will use ISPConfig to configure BIND (zones, etc.).


10 MySQL (5.0)

To install MySQL, we do this:

yum install mysql mysql-devel mysql-server

Then we create the system startup links for MySQL (so that MySQL starts automatically whenever the system boots) and start the MySQL server:

chkconfig --levels 235 mysqld on
/etc/init.d/mysqld start

Now check that networking is enabled. Run

netstat -tap | grep mysql

It should show a line like this:

[root@server1 named]# netstat -tap | grep mysql
tcp        0      0 *:mysql                     *:*                         LISTEN      2470/mysqld
[root@server1 named]#

If it does not, edit /etc/my.cnf and comment out the option skip-networking:

vi /etc/my.cnf


and restart your MySQL server:

/etc/init.d/mysqld restart


mysqladmin -u root password yourrootsqlpassword
mysqladmin -h server1.example.com -u root password yourrootsqlpassword

to set a password for the user root (otherwise anybody can access your MySQL database!).

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With CentOS 5.2 the new Bind version is 9.3.4 so the commands to configure it should be modified as:

chmod 755 /var/named/
chmod 775 /var/named/chroot/
chmod 775 /var/named/chroot/var/
chmod 775 /var/named/chroot/var/named/
chmod 775 /var/named/chroot/var/run/
chmod 777 /var/named/chroot/var/run/named/
cd /var/named/chroot/var/named/
ln -s ../../ chroot
cp /usr/share/doc/bind-9.3.4/sample/var/named/named.local /var/named/chroot/var/named/named.local
cp /usr/share/doc/bind-9.3.4/sample/var/named/named.root /var/named/chroot/var/named/named.root
touch /var/named/chroot/etc/named.conf
chkconfig --levels 235 named on
/etc/init.d/named start


From: Jon Pastore

I'm trying to set this up in a VE under open vz.

The /etc/fstab file only contains:

# cat /etc/fstab
none    /dev/pts        devpts  rw      0 0

How do I enable quotas?



From: Anonymous

Dont worry, that package version keeps changing.

While we have CentOS 5.3  the package is 9.3.6 and so on.

From: David

I had to install php-mysql also. Being a newbie to Linux this took a little searching around to find. Might want to add that to the list of things to do for other newbies... Thanks

From: EnKK

On CentOS, there are three root accounts for MySQL:

root@localhost - pass set by the first command

[email protected] - pass set by the second command

[email protected] - the password for this should be set like

# mysqladmin -h -u root password xxxxxx

Check your accounts:

# mysql -p -u root
mysql> select host,user,password from mysql.user;

From: Anonymous

Far better (IF your doing this for production) is to use the provided command:


Asks you to set a root password / Disable root remote access / Remove test DB / Remove annonymous user

A lot more secure :)