Step by Step: ProxySQL HA with BGP ECMP Anycast

Thu, 08 Oct 2026 18:50:00 +0000

In our previous blog post ProxySQL HA with BGP ECMP Anycast, we established why we would want to use BGP ECMP as a strategy for making our ProxySQL cluster highly available. Now let’s look at how to implement it technically.

For this scenario we assume that we have:

an OPNsense instance as our BGP Router with the IP address 10.5.8.251
Two ProxySQL nodes (proxysql-01 with IP 10.5.20.4 and proxysql-02 with IP 10.5.20.5)
10.5.200.1 as the anycast IP we want both ProxySQL nodes to accept connections on

Setup on the router

Enable BGP on OPNsense

The out-of-the-box installation of OPNsense does not come with BGP support. To add it, install the FRRouting package first (os-frr), which will enable available protocols for dynamic routing.

ProxySQL HA with BGP ECMP Anycast

Mon, 07 Sep 2026 11:00:00 +0000

When setting up a new database for an application, high availability (HA) is one of the main priorities. Let’s assume for this example that you chose to use a Percona XtraDB (PXC) cluster to host your database. But how does the application know which PXC node is healthy and can receive application traffic? Introducing a cluster of ProxySQLs can solve this problem, as ProxySQL will healthcheck the database nodes and route the application traffic to the healthy nodes. However, now the HA problem comes up again: how does the application know which ProxySQL host is healthy?

BGP on Percona Community

Step by Step: ProxySQL HA with BGP ECMP Anycast

Setup on the router

Enable BGP on OPNsense

ProxySQL HA with BGP ECMP Anycast