CHROOTED_DEBIAN_5.0.txt_beta

#!/bin/sh
#
# dxr@brutalsec.net
#    01-09-2009
#
# We can create a script for configure chroot enviroment but,
# YOU MUST UNDERSTAND HOW TO WORK IT for can solve possible 
# problems in the future.
# 
# Every service has its own chroot enviroment:
# BIND -> chroot
# Apache -> chroot
# Dovecot -> chroot
# Pureftpd -> Apache's chroot
# 
# Only apache and php packages aren't installed in real system,
# only in chroot enviroment with symbolic links from real system.
# 
# Please, configure chroot enviroment if security is really
# important for you and you known how to work it!
#

exit 1

1. BACKUP before change something in the system
2. Create partitions
3. Remove possible apache or php installations on real system
4. Prepair Chroot enviroment
5. Linking Webserver aplication from real system
6. mini_sendmail
7. Test services
8. Howto install ispconfig3
9. Migration


1. BACKUP before change something in the system 
# If is not a new instalation, then

BACKUP BACKUP BACKUP BACKUP BACKUP BACKUP
BACKUP BACKUP BACKUP BACKUP BACKUP BACKUP
BACKUP BACKUP BACKUP BACKUP BACKUP BACKUP
BACKUP BACKUP BACKUP BACKUP BACKUP BACKUP


2. Create partitions

/var/www/ Chroot partition (ext3)
/var/www/html/ Chroot system
/var/www/html/var/log/apache2 Log partition (ext3)
/var/www/html/var/www/html Webs partition (xfs)
/var/www/html/tmp Temporal dir (tmpfs, optiones: )

/dev/lvm_foobar1/chroot_lv      -> /var/www/ (ext3)
/dev/lvm_foobar2/apachelogs_lv  -> /var/www/html/var/log/apache2 (ext3)
/dev/lvm_foobar3/hosting_lv     -> /var/www/html/var/www/html (xfs)

mount /dev/lvm_foobar1/chroot_lv /var/www/
mkdir -p /var/www/html/var/log/apache2 /var/www/html/var/www/html
mount /dev/lvm_foobar2/apachelogs_lv /var/www/html/var/log/apache2
mount /dev/lvm_foobar3/hosting_lv /var/www/html/var/www/html


3. Remove possible apache or php installations on real system
# We never wont install apache or php in non-chroot system, if we have installed, we only have do a backup of confgigurations, uninstall, and check every simbolic link
dpkg -l|egrep --color -i 'apache|php'


4. Prepair Chroot enviroment
apt-get install debootstrap libpcre3 libaprutil1 libxml2 mime-support patch make gcc mysql-server
time debootstrap --arch=amd64 lenny /var/www/html/ ftp://ftp.fr.debian.org/debian/

echo "/proc         /var/www/html/proc               proc           defaults        0       0">>/etc/fstab
echo "devpts      /var/www/html/dev/pts            devpts         defaults        0       0">>/etc/fstab

mount -a

# We must create sshusers group
echo "@sshusers       -       chroot  /var/www/html/">>/etc/security/limits.conf

# After copy, we must clean unnecessary users and groups
cp -r /etc/{passwd,group,apt} /var/www/html/etc/

chroot /var/www/html apt-get update
chroot /var/www/html apt-get install fakeroot --force-yes -y
chroot /var/www/html apt-get install locales
chroot /var/www/html dpkg-reconfigure locales

mv /usr/lib/apache2 /usr/lib/apache2_old
mv /var/log/apache2 /var/log/apache2_old
mv /var/lock/apache2 /var/lock/apache2_old
mv /var/lib/apache2 /var/lib/apache2_old
mv /usr/lib/php5 /usr/lib/php5_old
mv /etc/apache2 /etc/apache2_old
mv /etc/suphp /etc/suphp_old

chroot /var/www/html apt-get install apache2 apache2.2-common apache2-doc apache2-mpm-prefork apache2-utils libexpat1 ssl-cert libapache2-mod-php5 php5 php5-common php5-gd php5-mysql php5-imap phpmyadmin php5-cli php5-cgi libapache2-mod-fcgid apache2-suexec php-pear php-auth php5-mcrypt mcrypt php5-imagick imagemagick libapache2-mod-suphp libopenssl-ruby libapache2-mod-chroot php-apc subversion vim
# The non webserver will install outside of chroot
apt-get install libdbi-perl postfix pure-ftpd-mysql amavisd-new clamav-getfiles clamav clamav-freshclam
# If you will use courier:
apt-get install courier-ssl courier-pop-ssl courier-pop courier-imap-ssl courier-imap courier-authdaemon
# If you will use dovecot:
apt-get install dovecot-imapd dovecot-pop3d
# If you will use BIND:
apt-get install bind9 bind9utils 

chroot /var/www/html /etc/init.d/apache2 stop

chroot /var/www/html a2enmod mod_chroot
chroot /var/www/html a2enmod suexec
echo "ChrootDir /var/www/html" > /var/www/html/etc/apache2/conf.d/mod_chroot.conf
sed -i -e 's#DocumentRoot /var/www/#DocumentRoot /var/www/html/#' /var/www/html/etc/apache2/sites-enabled/000-default
sed -i -e 's#x-httpd-php=php:/usr/bin/php-cgi#x-httpd-php=php:/usr/bin/php-cgi\nx-httpd-suphp=php:/usr/bin/php-cgi\nx-httpd-php=php:/usr/bin/php-cgi#' /var/www/html/etc/suphp/suphp.conf
sed -i -e 's#/var/run/apache2.pid#/var/run/apache2/apache2.pid#' /var/www/html/etc/apache2/envvars
sed -i -e 's/^"syntax on/syntax on/' /etc/vim/vimrc
sed -i -e 's/^"syntax on/syntax on/' /var/www/html/etc/vim/vimrc

# Protect apache configuration. ONLY root can read it
chown root:root /var/www/html/etc/apache2/ && chmod 700 /var/www/html/etc/apache2/
chmod 711 /var/www/html/etc/php5/


5. # Is good idea to add nagios alarm for check every simbolic link is correct.
ln -s /var/www/html/etc/apache2 /etc/apache2
ln -s /var/www/html/etc/suphp /etc/suphp
ln -s /var/www/html/var/run/apache2 /var/run/apache2
ln -s /var/www/html/var/run/apache2.pid /var/run/apache2.pid
ln -s /var/www/html/usr/sbin/apache2ctl /usr/sbin/apache2ctl
ln -s /var/www/html/usr/sbin/apache2 /usr/sbin/apache2
ln -s /var/www/html/usr/lib/apache2 /usr/lib/apache2
ln -s /var/www/html/usr/sbin/a2enmod /usr/sbin/a2enmod
ln -s /var/www/html/usr/sbin/a2dismod /usr/sbin/a2dismod
ln -s /var/www/html/usr/sbin/a2ensite /usr/sbin/a2ensite
ln -s /var/www/html/usr/sbin/a2dissite /usr/sbin/a2dissite
ln -s /var/www/html/var/log/apache2 /var/log/apache2
ln -s /var/www/html/var/lock/apache2 /var/lock/apache2
ln -s /var/www/html/var/lib/apache2 /var/lib/apache2
ln -s /var/www/html/usr/lib/php5 /usr/lib/php5
#ln -s /var/www/html/usr/bin/php5 /usr/bin/php5
#ln -s /var/www/html/etc/alternatives/php /etc/alternatives/php
#ln -s /var/www/html/usr/bin/php /usr/bin/php


6. # Install mini_sendmail for chroot
# We can use mini_sendmail for delivery emails directy in remote servers, but i prefer to control it in central mailserver for check spammers and limit it.

cd /tmp/
wget http://acme.com/software/mini_sendmail/mini_sendmail-1.3.6.tar.gz
tar xzf mini_sendmail-1.3.6.tar.gz
wget http://users1.leipzig.freifunk.net/%7Efirmware-build/brcm_2_4_Broadcom_default/build/openwrt_packages/mail/mini_sendmail/patches/200-fullname.patch
patch -p0 < 200-fullname.patch
cd mini_sendmail-1.3.6
make
# 2e555b2573c3ea65a467a5960f0b51f6  mini_sendmail
mv /var/www/html/usr/lib/sendmail /var/www/html/usr/lib/sendmail_old
mv /var/www/html/usr/sbin/sendmail /var/www/html/usr/sbin/sendmail_old
cp mini_sendmail /var/www/html/usr/sbin/mini_sendmail
cd /var/www/html/usr/lib/ && ln -s ../sbin/mini_sendmail sendmail
/var/www/html/usr/sbin && ln -s mini_sendmail sendmail

# ./mini_sendmail -h
# usage:  ./mini_sendmail [-f<name>] [-t] [-s<server>] [-p<port>] [-T<timeout>] [-v] [address ...]

#add to php.ini (/var/www/html/etc/php5/apache2/php.ini /var/www2/etc/php5/cli/php.ini /var/www2/etc/php5/cgi/php.ini line :672)

sendmail_path = /usr/sbin/mini_sendmail -t -i -fhosting@alojamientotecnico.com -s127.0.0.1

sed -i -e 's#^;sendmail_path =$#sendmail_path = /usr/sbin/mini_sendmail -t -i -fhosting@alojamientotecnico.com -s127.0.0.1#' /var/www/html/etc/php5/apache2/php.ini /var/www/html/etc/php5/cli/php.ini /var/www/html/etc/php5/cgi/php.ini


7. 
# Test
apache2ctl restart
chroot /var/www/html/

# php -i|grep --color sendmail
sendmail_from => no value => no value
sendmail_path => /usr/sbin/mini_sendmail -t -i -fhosting@alojamientotecnico.com -s127.0.0.1 => /usr/sbin/mini_sendmail -t -i -fhosting@alojamientotecnico.com -s127.0.0.1
Path to sendmail => /usr/sbin/mini_sendmail -t -i -fhosting@alojamientotecnico.com -s127.0.0.1
#                            

# Sould be good idea check /var/www/html/usr/lib/sendmail /var/www/html/usr/sbin/sendmail and /var/www/html/usr/sbin/mini_sendmail with nagios alarm ;)


8. Install ispconfig ........

chroot /var/www/html/
cd /tmp/
svn co svn://svn.ispconfig.org/ispconfig3 svn.ispconfig.org

### Migration to other server ###
Really easy:

Do step 1

And after do a simple rsync:

screen
time rsync -a --progress root@host1:/var/www/ /var/www/

# Install some apache's dependencies
apt-get install debootstrap libpcre3 libaprutil1 libxml2 mime-support

Do step 5
Do step 6