The Perfect Server - CentOS 5.2 - 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-9.3.4/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

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 ~]# netstat -tap | grep mysql
tcp        0      0 *:mysql                     *:*                         LISTEN      2584/mysqld
[root@server1 ~]#

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

vi /etc/my.cnf

[...]
#skip-networking
[...]

and restart your MySQL server:

/etc/init.d/mysqld restart

Run

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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From: rezilient1

This line doesn't work for me, same issue for anyone else?  Is it important?  I confirmed the root password was successfull set, what does this do?

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

From: Milan

Read step 4 of this howto carefully. It is important to assign server1.example.com (replace with Your server name) to actual IP address of the server.

From: Augusto

It doesn't seem to work fine. I can't find the option "-h" for the command mysqladmin:

http://dev.mysql.com/doc/refman/5.1/en/mysqladmin.html

 If you can access to the mysql server, then it's ok:

[root@hello tmp]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 14 to server version: 5.1

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql>


From: Narcarsiss

Easy fix Apply -p after password

for example; mysqladmin -h Xeon.com -u root password -p ********************

 Cheers Narcarsiss

From: Anonymous

use this to fix it.  worked for me.