LoadBalancing with HAProxy
In this post I’ll teach you how to set up 3 ubuntu servers in order to create the follow architecture:
- 1 LoadBalancer Server;
- 2 Web Application Servers;
Ok, what’s load balancer? What’s the idea behind it? So, if you wanna create a web application the most basic idea is buy a domain name, point this domain name to the server IP and set up
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/
ssl-default-bind-ciphers EECDH+aRSA+AES:TLSv1+kRSA+AES:TLSv1+kRSA+3DES
ssl-default-bind-options no-sslv3
defaults
log global
mode http
option httplog
option dontlognull
option forwardfor
option http-server-close
stats uri /haproxy?stats
stats auth haproxy:YourPassowordHere
timeout connect 5000
timeout client 50000
timeout server 50000
errorfile 400 /etc/haproxy/errors/400.http
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
frontend http-in
bind *:80
reqadd X-Forwarded-Proto:\ http
default_backend application-backend
frontend https-in
bind *:443 ssl crt /etc/haproxy/sslpem/your.server.pem.file.pem
reqadd X-Forwarded-Proto:\ https
default_backend application-backend
backend application-backend
redirect scheme https if !{ ssl_fc }
balance leastconn
option httpclose
option forwardfor
#enter the IP of your application here
server SERVER-1 10.10.10.1:8080 check
server SERVER-2 10.10.10.2:8080 check
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