Configuration d'un cluster web (Haproxy)
1) Activer 2 cartes réseaux sur la machine
2) Installer haproxy depuis les dépôts de Debian puis faire ces commandes pour modifier la configuration du programme :
sed -i "s/ENABLED=0/ENABLED=1/g" /etc/default/haproxy sed -i "s/ENABLED=0/ENABLED=1/g" /etc/init.d/haproxy
3) Modifier le fichier /etc/haproxy/haproxy.cfg
global
log /dev/log local0
log /dev/log local1 notice
chroot /var/lib/haproxy
stats socket /run/haproxy/admin.sock mode 660 level admin
stats timeout 30s
user haproxy
group haproxy
daemon
# Default SSL material locations
#ca-base /etc/ssl/certs
#crt-base /etc/ssl/private
# Default ciphers to use on SSL-enabled listening sockets.
# For more information, see ciphers(1SSL). This list is from:
# https://hynek.me/articles/hardening-your-web-servers-ssl-ciphers/
# An alternative list with additional directives can be obtained from
# https://mozilla.github.io/server-side-tls/ssl-config-generator/?server=haproxy
#ssl-default-bind-ciphers ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:RSA+AESGCM:RSA+AES:!aNULL:!MD5:!DSS
#ssl-default-bind-options no-sslv3
defaults
log global
mode http
option httplog
option dontlognull
timeout connect 5000
timeout client 50000
timeout server 50000
errorfile 400 /etc/haproxy/errors/400.http # V Pages d'erreurs HTTP V
errorfile 403 /etc/haproxy/errors/403.http
errorfile 408 /etc/haproxy/errors/408.http
errorfile 500 /etc/haproxy/errors/500.http
errorfile 502 /etc/haproxy/errors/502.http
errorfile 503 /etc/haproxy/errors/503.http
errorfile 504 /etc/haproxy/errors/504.http
listen cluster_web #nouveau cluster
bind 192.168.152.2:80 #interface du répartiteur de charge en écoute
mode http #protocole
balance roundrobin #méthode de répartition de charge
option httpclose
option forwardfor
server web1 192.168.1.101:80 check #Serveur web 1 du cluster
server web2 192.168.1.102:80 check #Serveur web 2 du cluster
stats enable # V configuration de la page des statistiques V
stats hide-version
stats refresh 30s
stats auth admin:admin
stats uri /stats
stats realm Haproxy\ Statistics
stats scope webfarm
stats scope webservers
balance = Mode de répartition de charge (source, roundrobin, etc…)
4) Relancer le service :
service haproxy restart