Centos7 Server Migration Script

migrate.sh

#!/bin/env bash
# 
# Author: Amado Martinez - AmadoMartinez.mx
# License: MIT License
# Date: 2016-11-02
# 
# Migrate to CentOS7 Script
# provide newhost argument to transfer data and launch import and init processes to the new machine.
#  ssh keys must be setup on remote system.
# use import argument for importing migration data and install services
# use init argument to launch services on the new machine

output="/root/migration"

if [ $# -lt 1 ] ; then
	echo "$0 [newhost|import|init]"
	exit 0;
fi

host="$1"
if [ $# -lt 2 ]; then
	dry=n
else
	dry=
fi

importaccounts () {
	if [ $# -eq 0 ] ; then
		importaccounts "$(cd /home/ && echo -n *)"
		return
	fi

	for fname in $(find "$output/" -name "*.migrate" -printf "%f\n" | sed 's/.migrate$//' ) ; do
		[ -f "$output/backup.$fname" ] || cp -av "/etc/$fname" "$output/backup.$fname"
	#echo -n "$@"
		echo "Writing to /etc/$fname"
	echo -n "$@" | xargs -I{} -d' ' grep {} "$output/$fname.migrate" >> "/etc/$fname"
	done
}


if [ "$host" == "import" ] ; then
    # epel 7
    rpm -i https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
    
    ## INSTALL AJENTI
    rpm -i http://repo.ajenti.org/ajenti-repo-1.0-1.noarch.rpm
    yum install -y ajenti ajenti-v ajenti-v-mysql ajenti-v-php-fpm

    #systemctl restart ajenti
    echo ### DOES AJENTI WORK? FIX CENTOS 7.2 ISSUE WITH AJENTI
    echo https://github.com/ajenti/ajenti/commit/9d09056c16fdcad5603fc3a0d7446865c5a21194
    echo ###
    echo ### REMEMBER TO SET AJENTI PASSWORD!
    echo ###     
    ## END INSTALL AJENTI
    
    # BEGIN LAMP STACK INSTALLATION PHP5.5
    rpm -i https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
    
    yum install -y yum-plugin-replace
    yum replace -y --replace-with=php55w-common php70w-common 
    yum install -y php55w php55w-fpm php55w-opcache httpd fail2ban mailx mariadb php55w-mysql mariadb-server mariadb
    #END LAMP STACK
    
    ## MARIADB IMPORT from $output/mysql.tar.gz
    systemctl stop mariadb
    tar --overwrite -C / -xzvf "$output/mysql.tar.gz"
    ## END MARIADB IMPORT

    ## IMPORT USER ACCOUNTS
    importaccounts
    ## END IMPORT USER ACCOUNTS


    ## IMPORT DATA DIRS
    [ -f "$output/home.tar.gz" ] && tar --skip-old-files -C / -xzvf "$output/home.tar.gz"
    [ -f "$output/mail.tar.gz" ] && tar -C / -xzvf "$output/mail.tar.gz"
    ## END DATA DIRS IMPORT

    ## BEGIN IMPORT http files
    rsync -av "$output/httpd-conf.d/" /etc/httpd/conf.d/
    for conf in $(find /etc/httpd/conf.d/) ; do
            perl -i -p0e 's/order allow,deny.*?allow from all/Require all granted/is' "$conf"
    done
    ## END IMPORT http files

    exit;
fi

if [ "$host" == "init" ] ; then
    systemctl enable httpd
    systemctl start httpd
    systemctl enable fail2ban
    systemctl start fail2ban
    systemctl enable mariadb
    systemctl start mariadb
    systemctl restart crond
    echo "System is online.."
    exit;
fi


## BEGIN DATA MIGRATION..

[ -d "$output/" ] || mkdir -v "$output"

#  
for f in passwd group shadow gshadow ; do
	cp -pf "/etc/$f" "$output/$f.migrate"
done

cd /

# home dirs
    [ -f "$output/home.tar.gz" ] || tar -zcvpf "$output/home.tar.gz" /home
# emails
    [ -f "$output/mail.tar.gz" ] || tar -zcvpf "$output/mail.tar.gz" /var/spool/mail
# mysql data
if [ ! -f "$output/mysql.tar.gz" ] ; then
    service mysqld stop
    tar -zcvpf "$output/mysql.tar.gz" /var/lib/mysql
    service mysqld start
fi
# http config
    rsync -av /etc/httpd/conf.d/ "$output/httpd-conf.d/"
    
# transfer everything except tars
    rsync -av$dry --exclude "*.tar.gz" "$output/" "$host:$output/"
    
# proceed to transfer tar files
    rsync -a$dry --progress "$output/" "$host:$output/"
    
# transfer cron jobs
    rsync -a$dry --ignore-existing "/var/spool/cron/" "$host:/var/spool/cron/"
    
# transfer fail2ban config
    rsync -a$dry --ignore-existing "/etc/fail2ban/" "$host:/etc/fail2ban/"
    
# trigger import
    echo "Now configuing remote system.."
    ssh $host $output/migrate.sh import

# start up services
    ssh $host $output/migrate.sh init