Failover

To provide failover capability for your Surfly setup, you will need at least 2 servers running the same version of Surfly application and a load balancer to handle failover.

Load balancer

Surfly doesn’t require any specific load balancer to make failover work. Please check the configuration example for HAProxy:

global
  log 127.0.0.1 local0 debug
  user haproxy
  group haproxy

defaults
  log global
  mode tcp
  option tcplog
  maxconn 10000
  timeout connect 5s
  timeout queue   5s
  timeout client  40s
  timeout server  120s

# Make statistic available on /stat (Optional)
listen  stats
  bind 192.168.33.10:1936
  mode http
  log global

  maxconn 10

  stats enable
  stats refresh 5s
  stats show-node
  stats auth user:password
  stats uri  /stat

frontend lb_http
  bind :::80 v4v6
  mode http
  redirect scheme https if !{ ssl_fc }

frontend lb
  bind :::443 v4v6
  default_backend surfly_servers

backend surfly_servers
  fullconn 10000
  mode tcp
  server main 192.168.33.11:4433 check port 443 on-marked-up shutdown-backup-sessions send-proxy-v2
  server failover 192.168.33.12:4433 check port 443 backup send-proxy-v2

When main server 192.168.33.11 is down, all traffic is switched to the backup server 192.168.33.12.