11 Install Some Software
Now we install a few packages that are needed later on. Run
apt-get install binutils cpp fetchmail flex gcc libarchive-zip-perl libc6-dev libcompress-zlib-perl libdb4.6-dev libpcre3 libpopt-dev lynx m4 make ncftp nmap openssl perl perl-modules unzip zip zlib1g-dev autoconf automake1.9 libtool bison autotools-dev g++ build-essential
(This command must go into one line!)
12 Journaled 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, run
apt-get install quota
Edit /etc/fstab. Mine looks like this (I added ,usrjquota=quota.user,grpjquota=quota.group,jqfmt=vfsv0 to the partition with the mount point /):
vi /etc/fstab
# /etc/fstab: static file system information. # # Use 'blkid -o value -s UUID' to print the universally unique identifier # for a device; this may be used with UUID= as a more robust way to name # devices that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 /dev/mapper/server1-root / ext4 errors=remount-ro,usrjquota=quota.user,grpjquota=quota.group,jqfmt=vfsv0 0 1 # /boot was on /dev/sda1 during installation UUID=deae7cd1-b106-47aa-9a7c-512f046d2ebf /boot ext2 defaults 0 2 /dev/mapper/server1-swap_1 none swap sw 0 0 /dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0 |
To enable quota, run these commands:
mount -o remount /
quotacheck -avugm
quotaon -avug
13 DNS Server
Run
apt-get install bind9
For security reasons we want to run BIND chrooted so we have to do the following steps:
/etc/init.d/bind9 stop
Edit the file /etc/default/bind9 so that the daemon will run as the unprivileged user bind, chrooted to /var/lib/named. Modify the line: OPTIONS="-u bind" so that it reads OPTIONS="-u bind -t /var/lib/named":
vi /etc/default/bind9
# run resolvconf? RESOLVCONF=yes # startup options for the server OPTIONS="-u bind -t /var/lib/named" |
Create the necessary directories under /var/lib:
mkdir -p /var/lib/named/etc
mkdir /var/lib/named/dev
mkdir -p /var/lib/named/var/cache/bind
mkdir -p /var/lib/named/var/run/bind/run
Then move the config directory from /etc to /var/lib/named/etc:
mv /etc/bind /var/lib/named/etc
Create a symlink to the new config directory from the old location (to avoid problems when bind gets updated in the future):
ln -s /var/lib/named/etc/bind /etc/bind
Make null and random devices, and fix permissions of the directories:
mknod /var/lib/named/dev/null c 1 3
mknod /var/lib/named/dev/random c 1 8
chmod 666 /var/lib/named/dev/null /var/lib/named/dev/random
chown -R bind:bind /var/lib/named/var/*
chown -R bind:bind /var/lib/named/etc/bind
We need to create the file /etc/rsyslog.d/bind-chroot.conf...
vi /etc/rsyslog.d/bind-chroot.conf
... and add the following line so that we can still get important messages logged to the system logs:
$AddUnixListenSocket /var/lib/named/dev/log |
Restart the logging daemon:
/etc/init.d/rsyslog restart
Start up BIND, and check /var/log/syslog for errors:
/etc/init.d/bind9 start
14 MySQL
In order to install MySQL, we run
apt-get install mysql-server mysql-client libmysqlclient-dev
You will be asked to provide a password for the MySQL root user - this password is valid for the user root@localhost as well as root@server1.example.com, so we don't have to specify a MySQL root password manually later on:
New password for the MySQL "root" user: <-- yourrootsqlpassword
Repeat password for the MySQL "root" user: <-- yourrootsqlpassword
We want MySQL to listen on all interfaces, not just localhost, therefore we edit /etc/mysql/my.cnf and comment out the line bind-address = 127.0.0.1:
vi /etc/mysql/my.cnf
[...] # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. #bind-address = 127.0.0.1 [...] |
Then we restart MySQL:
/etc/init.d/mysql restart
Now check that networking is enabled. Run
netstat -tap | grep mysql
The output should look like this:
root@server1:~# netstat -tap | grep mysql
tcp 0 0 *:mysql *:* LISTEN 7220/mysqld
root@server1:~#