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In this post, I am going to talk about how to configure FreeSWITCH in a high availability active-passive schema. The active-passive approach will share a floating IP between your VoIP switches and when one gets off-line, the passive one will take control over the IP and it will get the load. For more information about how this works, I strongly suggest you read my article about the High Availability Cluster Overview; you will understand what you are going to do.
This article will assume the following:
- You know the basics of Corosync and Pacemaker
- You already have installed Corosync and Pacemaker (installed, but not configured)
- You know how to configure your database in active-active cluster schema (regardless if it is MySQL/MariaDB or PostgreSQL)
- You know how to sync files between your FreeSWITCH servers.
Read more: How to Configure FreeSWITCH for High Availability
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So far the only way of creating a highly available cluster with a floating IP approach was using bare metal serves in any datacentre, until Digital Ocean arrived. As far as I know, Digital Ocean is the only VPS datacentre that provides floating IP services. Floating IP is very handy, it is the key to creating a highly available cluster by moving a floating IP under demand among some selected servers.
I have already explained how to configure a FreeSWITCH HA Cluster. In this article, I will only explain how to configure the Digital Ocean's Pacemaker resource.
Read more: How to Configure FreeSWITCH for High Availability with Digital Ocean
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So many of you may be already aware that from FreeSWITCH 1.10.x it is possible to connect directly to MariaDB (and MySQL) without using ODBC. I am trying right now with a customer's server, and so far it is working very nice. So, I will describe how to make it work.
Read more: How to Connect FreeSWITCH to MariaDB/MySQL Directly without ODBC
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