HAProxy
Three-node HAProxy with Keepalived
1. Configure servers
2. Configure HAProxy on all three nodes
3. Configure keepalived
4. Bind to non-local interfaces
5. Syslog config
6. Configure postfix on all three to just send email
I am using these three-node configuration with HAProxy as LB and reverse proxy for SMTP, IMAP, MariaDB Galera Cluster. …