To configure redundancy for SFTP servers, follow these steps:
1. Set up two or more SFTP servers with identical configuration and permissions.
1. Implement a load balancer in front of the SFTP servers. This ensures that the incoming SFTP requests are distributed evenly across the servers. If one of the servers fails, the load balancer can detect it and redirect traffic to the healthy server(s).
1. Configure synchronisation between the servers using a tool like rsync or GlusterFS. This ensures that files uploaded to any server are replicated to all the other servers. If one server goes down, the other servers will have a copy of the files.
1. Implement monitoring and alerting systems. Set up monitoring tools like Nagios or Zabbix to monitor the health of the SFTP servers. Configure alerts so that you are notified in case of a failure.
1. Regularly test your SFTP redundancy plan. Regularly test your redundancy plan to make sure that everything is working as expected.
By following these steps, you can ensure that your SFTP servers are highly available and that your data is protected against server failures.
