Here is a step-by-step guide to help you set up AWS HAproxy failover. Our HAProxy Support team is available to help you with your questions and concerns.

AWS HAproxy failover

Did you know that AWS HAProxy offers us an automatic failover option? It involves monitoring the health of the servers as well as keeping track of the availability of these servers.

AWS HAProxy redirects traffic automatically to a healthy server in case of server failure. This ensures that the application available to users.

With AWS HAProxy failover, there are various setups, including active-passive and active-active.

The active-passive configuration involves designating a server as the primary server, and the other server as the standby or backup server. The backup server starts functioning, only when the primary server fails.

On the other hand, the active-active configuration involves both keeping servers as active. They can both serve traffic, where one acts as the primary server and the other one as the backup.

Today, we are going to take a quick look at the configuration steps. Our experts would like to point out that these steps often depend on the specific deployment scenario as well.

How to set up AWS HAProxy failover in Active-Passive configuration

1. To begin with, we have to set up two EC2 instances, one each for the primary HAProxy server and the backup HAProxy server.
2. Then, install HAProxy on these instances.
3. After that, create a primary HAProxy server configuration file to indicate which backend servers it will load balance traffic to.
4. Now, we have to create another configuration file for the backup HAProxy server. This file will have the same backend server definitions as well as an additional “backup” keyword to ensure that the server is used only if the primary server is unavailable.
5. Next, we will use a monitoring tool to keep an eye on the primary HAProxy server’s health.
6. Then, we have to configure keepalived on both servers by defining the virtual IP address for routing traffic to the active HAProxy server and specifying in which cases the backup server should take over.
7. Finally, start HAProxy and keepalived on both servers.

Let us know in the comments if you need further help setting up AWS HAproxy failover.

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Conclusion

To sum up, our Support Techs demonstrated how to set up AWS HAproxy failover in an active-passive configuration.