One day my client asked me to migrate a Direct Admin Server to NEW server with improved hardware. He wants this migration with minimum down time.
Below are the steps which I did for this migration.
01. Check the current versions of Apache, PHP and MySQL and then number of IPs on current running server.
In my case versions are as following:
Apache/2.2.13
PHP 5.2.17
MySQL 5.0IP details:
174.XXX.XX.XX1
174.XXX.XX.XX2
174.XXX.XX.XX3
02. Install directadmin in custom mode on NEW server.
On NEW server I installed the following versions:
Apache 2.2 [it is the latest version available via DA's custombuild]
PHP 5.2 [It is the latest version of PHP available via DA's custombuild]
MySQL 5.1 [It is the latest version of MySQL available via DA and also this version supports "TRIGGER"(5.0 does not support "TRIGGER" in each mysql user level)]
Make DA and all other services down on NEW server:
/etc/init.d/named stop && \ /etc/init.d/exim stop && \ /etc/init.d/proftpd stop && \ /etc/init.d/dovecot stop && \ /etc/init.d/httpd stop && \ /etc/init.d/mysqld stop && \ /etc/init.d/directadmin stop && \ /etc/init.d/crond stop
03. Upgrade MySQL on OLD server to 5.1
For upgrading MySQL do:
a. Change CWD to /usr/local/directadmin/custombuild/
b. Change mysql options in options.conf. So it should be like following.
mysql=5.1
mysql_inst=yes
mysql_backup=yes
c. Update build script
./build update_script
d. Update mysql
./build mysql d
04. Rsync all needed configuration files, /home and /var/lib/mysql from OLD server to NEW server.
My rsync script for DA to DA migration:
rsync -avz --stats --progress --delete -e ssh /var/lib/mysql/ XX.XXX.XX.XXX:/var/lib/mysql rsync -avz --stats --progress --delete -e ssh /home/ XX.XXX.XX.XXX:/home rsync -avz --stats --progress -e ssh /etc/passwd XX.XXX.XX.XXX:/etc rsync -avz --stats --progress -e ssh /etc/shadow XX.XXX.XX.XXX:/etc rsync -avz --stats --progress -e ssh /etc/group XX.XXX.XX.XXX:/etc rsync -avz --stats --progress -e ssh /etc/exim.conf XX.XXX.XX.XXX:/etc rsync -avz --stats --progress -e ssh /etc/exim.pl XX.XXX.XX.XXX:/etc rsync -avz --stats --progress -e ssh /etc/system_filter.exim XX.XXX.XX.XXX:/etc rsync -avz --stats --progress -e ssh /etc/exim.crt XX.XXX.XX.XXX:/etc rsync -avz --stats --progress -e ssh /etc/exim.key XX.XXX.XX.XXX:/etc rsync -avz --stats --progress -e ssh /etc/proftpd.conf XX.XXX.XX.XXX:/etc rsync -avz --stats --progress -e ssh /etc/proftpd.vhosts.conf XX.XXX.XX.XXX:/etc rsync -avz --stats --progress -e ssh /etc/proftpd.passwd XX.XXX.XX.XXX:/etc rsync -avz --stats --progress -e ssh /etc/named.conf XX.XXX.XX.XXX:/etc rsync -avz --stats --progress -e ssh /root/.my.cnf XX.XXX.XX.XXX:/root rsync -avz --stats --progress --delete -e ssh /etc/virtual/ XX.XXX.XX.XXX:/etc/virtual rsync -avz --stats --progress --delete -e ssh /etc/httpd/conf/ XX.XXX.XX.XXX:/etc/httpd/conf rsync -avz --stats --progress --delete -e ssh /var/named/ XX.XXX.XX.XXX:/var/named rsync -avz --stats --progress --delete -e ssh /var/spool/virtual/ XX.XXX.XX.XXX:/var/spool/virtual rsync -avz --stats --progress --delete -e ssh /var/spool/mail/ XX.XXX.XX.XXX:/var/spool/mail rsync -avz --stats --progress --delete -e ssh /var/spool/cron/ XX.XXX.XX.XXX:/var/spool/cron rsync -avz --stats --progress --delete -e ssh /var/www/ XX.XXX.XX.XXX:/var/www rsync -avz --stats --progress --delete -e ssh /var/log/ XX.XXX.XX.XXX:/var/log rsync -avz --stats --exclude 'custombuild* --progress --delete -e ssh /usr/local/directadmin/ XX.XXX.XX.XXX:/usr/local/directadmin
Note: For more details about DA’s paths goto this link[http://directadmin.com/paths.html]
05. After rsync, IPs in the various configuration files will be the OLD one, so swap it with IPs of NEW server.
Configuration files which have IPs are following:
/etc/httpd/conf/httpd.conf
/etc/httpd/conf/extra/httpd-vhosts.conf
/etc/httpd/conf/ips.conf
/etc/proftpd.conf
/etc/proftpd.vhosts.conf
/usr/local/directadmin/scripts/setup.txt
/usr/local/directadmin/data/admin/ip.list
/usr/local/directadmin/data/admin/show_all_users.cache
/usr/local/directadmin/data/users/*/user.conf
/usr/local/directadmin/data/users/*/httpd.conf
/usr/local/directadmin/data/users/*/user_ip.list
/usr/local/directadmin/data/users/*/domains/*.conf
/usr/local/directadmin/data/users/*/domains/*.ftp
/usr/local/directadmin/data/users/*/domains/*.ip_list
/var/named/*.db
For editing these files, DA have a script named ipswap.sh.
Path of the ipswap.sh script:
/usr/local/directadmin/scripts/ipswap.sh
Use ipswap.sh to swap OLD IP with NEW one:
sh /usr/local/directadmin/scripts/ipswap.sh 174.XXX.XX.XX1 135.XX.XX.XX3 sh /usr/local/directadmin/scripts/ipswap.sh 174.XXX.XX.XX2 135.XX.XX.XX5 sh /usr/local/directadmin/scripts/ipswap.sh 174.XXX.XX.XX3 135.XX.XX.XX4
06. Go to /usr/local/directadmin/custombuild
Perform a
./build all y
This is for data and configuration integrity
07. Start all services in NEW server.
/etc/init.d/named start && \ /etc/init.d/exim start && \ /etc/init.d/proftpd start && \ /etc/init.d/dovecot start && \ /etc/init.d/httpd start && \ /etc/init.d/mysqld start && \ /etc/init.d/directadmin start && \ /etc/init.d/crond start
08. re-rsync /home and /var/lib/mysql
rsync -avz --stats --progress --delete -e ssh /var/lib/mysql/ XX.XXX.XX.XXX:/var/lib/mysql rsync -avz --stats --progress --delete -e ssh /home/ XX.XXX.XX.XXX:/home
09. Go to OLD server and stop all services and make IP chnages in each zone files in order to point domains to NEW server.
For that do:
a. Stop all services
/etc/init.d/named stop && \ /etc/init.d/exim stop && \ /etc/init.d/proftpd stop && \ /etc/init.d/dovecot stop && \ /etc/init.d/httpd stop && \ /etc/init.d/mysqld stop && \ /etc/init.d/directadmin stop && \ /etc/init.d/crond stop
b. Change IPs in each zone files
sed -i 's/174.XXX.XX.XX1/135.XX.XX.XX3/g' *.db sed -i 's/174.XXX.XX.XX2/135.XX.XX.XX5/g' *.db sed -i 's/174.XXX.XX.XX3/135.XX.XX.XX4/g' *.db
c. Start named service
/etc/init.d/named start
10. Update DirectAdmin License and restart Direct Admin on NEW server
sh /usr/local/directadmin/scripts/getLicense.sh UID LID service directadmin restart
11. Ask the customers to change all the doamin’s nameserver to NEW server’s nameserver