Ams

Sommaire 1 Admin 2 Frontaux 2.1 A valdier 3 Databases 3.1 Procédure de bascule 3.1.1 couper le master 3.1.2 allow writes sur le slave 3.1.3 pointage des frontaux 3.1.4 Le script

Admin

admin.ams.talevas.com

lvcreate -L10G -ngit vg
mkfs.ext3 /dev/mapper/vg-git
mkdir /home/config
echo "/dev/mapper/vg-git    /home/config  ext3    defaults        0       0" >> /etc/fstab
mount /home/config
lvcreate -L 100G -nfrontlog vg
mkfs.ext3 /dev/mapper/vg-frontlog
mkdir /home/log
echo "/dev/mapper/vg-frontlog    /home/log  ext3    defaults        0       0" >> /etc/fstab
mount /home/log
lvcreate -L 100G -nnasbackup vg
mkfs.ext3 /dev/mapper/vg-nasbackup
mkdir /home/nasbackup
echo "/dev/mapper/vg-nasbackup    /home/nasbackup  ext3    defaults        0       0" >> /etc/fstab
mount /home/nasbackup
rm -rf /home/nasbackup/lost*
rm -rf /home/log/lost*
rm -rf /home/config/lost*
rm -rf /home/lost*
rm -rf /tmp/lost*

apt-get update
apt-get install tree htop zip openntpd git-core proftpd rsnapshot

apt-get install -yq openvpn 

http://doc.ubuntu-fr.org/openvpn

git config --global user.name "Damien"
git config --global user.email "damien@talevas.com"
git config --global core.autocrlf input
git config --global core.safecrlf true

Frontaux

front01.ams.talevas.com -- front02.ams.talevas.com

rm -rf /home/lost*
rm -rf /tmp/lost*
apt-get update
apt-get install -yq openvpn
apt-get install -yq nfs-client openntpd htop php5 php5-mysql
lvcreate -L 50G -nwww vg
mkfs.ext3 /dev/mapper/vg-www
echo "/dev/mapper/vg-www   /var/www  ext3    defaults        0       0" >> /etc/fstab
mount /var/www
rm -rf /var/www/lost*
mkdir /var/www/upload/
# mount -t nfs 10.16.101.6:/nas-000108/mininas-001386 /var/www/upload/
echo "10.16.101.6:/nas-000108/mininas-001386 /var/www/upload/ nfs   rw,_netdev,mountproto=tcp     0       0 " >>/etc/fstab
mount /var/www/upload

a2enmod rewrite
service apache2 restart

A valdier

ServerTokens Prod

Databases

db01.ams.talevas.com -- db02.ams.talevas.com

# creation de l'espace disque
lvcreate -L50G -nmysql vg
lvcreate -L10G -nbinlog vg
mkfs.ext3 /dev/mapper/vg-mysql
mkfs.ext3 /dev/mapper/vg-binlog
mkdir /var/lib/mysql
mkdir /var/log/mysql-binlog
echo "/dev/mapper/vg-mysql    /var/lib/mysql  ext3    defaults        0       0" >> /etc/fstab
echo "/dev/mapper/vg-binlog   /var/log/mysql-binlog  ext3    defaults        0       0" >> /etc/fstab
mount /var/lib/mysql
mount /var/log/mysql-binlog
chown mysql:mysql /var/log/mysql-binlog/
rm -rf /var/lib/mysql/lost*
rm -rf /home/lost*
rm -rf /tmp/lost*
rm -rf  /var/log/mysql-binlog/lost*
# installation de Mysql
apt-get update
apt-get install -yq openvpn openntpd htop
apt-get install -yq mysql-server

# DB01
iptables -A INPUT -p tcp -s 188.165.240.126 --dport 3306 -j ACCEPT
# DB02
iptables -A INPUT -p tcp -s 188.165.241.29 --dport 3306 -j ACCEPT
# front01
iptables -A INPUT -p tcp -s 94.23.12.228 --dport 3306 -j ACCEPT
# front02
iptables -A INPUT -p tcp -s 94.23.241.220 --dport 3306 -j ACCEPT
# admin
iptables -A INPUT -p tcp -s 91.121.8.205 --dport 3306 -j ACCEPT
iptables -A INPUT -p tcp --dport 3306 -j DROP

iptables-save > /etc/iptables.rules

# recup des données openvpn depuis le master
scp admin.ams.talevas.com:/home/config/db02/etc/openvpn/* /etc/openvpn/
/etc/init.d/openvpn start

Procédure de bascule

couper le master

iptables partout

allow writes sur le slave

suppression du fichier de conf

pointage des frontaux

édition du fichier host

Le script

#!/bin/bash

ServerList="front01.prod.allmyski.info front02.prod.allmyski.info"
MasterDb="db01.prod.allmyski.info"
SlaveDb="db02.prod.allmyski.info"

# couper le master => IPTABLES sur les frontaux

for server in $ServerList
do
        echo "$server => iptables -A OUTPUT -p tcp  -d 188.165.241.29 -j DROP"
        ssh $server "iptables -A OUTPUT -p tcp  -d 188.165.241.29 -j DROP"
done

# supression du read_only sur le slave
# restart du slave
echo "supression du read_only sur le slave"
ssh $SlaveDb "rm /etc/mysql/conf.d/slave.cnf; service mysql restart"

# changement du master dans les fichiers host des frontaux
for server in $ServerList
do
        echo "On change l'entree master pour le front $server."
        ssh $server "cp /etc/hosts /etc/hosts.ori"
        ssh $server "echo '188.165.241.29 $MasterDb' >> /etc/hosts"
done