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BRIX On-Premises > Prepare infrastructure > Load balancer / Configure HAProxy for Redis Sentinel

Configure HAProxy for Redis Sentinel

The architecture of a high-availability BRIX cluster involves interaction between the BRIX application microservices and Redis Sentinel. To ensure reliable load balancing within the system, configure HAProxy for Redis Sentinel. This setup allows traffic to be redirected to the primary Redis server in case of a technical failure, ensuring continuous system operation

Example HAProxy configuration for Redis Sentinel

ВThis article provides a configuration for identifying the primary Redis server and redirecting traffic to it. HAProxy will automatically check the 6379 port on Redis servers and determine the current server with the master role.

Steps to create HAProxy configuration for Redis Sentinel:

  1. Open the haproxy.cfg configuration file for editing using the command:

sudo nano /etc/haproxy/haproxy.cfg

  1. Make changes to the haproxy.cfg configuration file:

Configuration example

### Redis ###
frontend redis_master
  bind haproxy-server.your_domain:6379
  mode tcp
  option tcplog
  option clitcpka
  timeout client 24h
  default_backend redis_master
 
backend redis_master
  balance first
  mode tcp
  timeout queue 2s
  timeout connect 2s
  timeout check 1s
  option srvtcpka
  timeout server 24h
  option tcp-check
  tcp-check connect
  tcp-check send AUTH\ <PASSWORD>\r\n
  tcp-check send PING\r\n
  tcp-check expect string +PONG
  tcp-check send info\ replication\r\n
  tcp-check expect string role:master
  tcp-check send QUIT\r\n
  tcp-check expect string +OK
  server redis-server1 redis-server1.your_domain:6379 check inter 5s
  server redis-server2 redis-server2.your_domain:6379 check inter 5s
  server redis-server3 redis-server3.your_domain:6379 check inter 5s
### Redis ###
  1. Restart HAProxy to apply changes:

sudo systemctl restart haproxy

After completing the HAProxy configuration, traffic will be directed to the primary Redis server (master). In case of failures, this setup ensures the stable operation of the system.

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