Tag: resilience
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Clustering OpenSIPS for High Availability – Part 3
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In this, part 3, we examine how a virtual IP address can be switched between two Linux servers to provide an active/standby failover and how this impacts on OpenSIPS. Part 2 investigated the implications for far-end NAT traversal of clustering two OpenSIPS servers and concluded that the best solution is the use of a virtual IP address. Summarising the design so far If you read the first two parts of this article, you will appreciate how and why we…
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Clustering OpenSIPS for High Availability – Part 2
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In this, part 2, we investigate the implications of using more than one IP address on an OpenSIPS server and how this impacts on far-end NAT traversal. We will also see how the use of a virtual IP address can overcome these problems when clustering two OpenSIPS servers. Part 1 reviewed why we might want to cluster two OpenSIPS servers and options for sharing common resources including the mediaproxy and MySQL database. An overview of far-end…
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Clustering OpenSIPS for High Availability – Part 1
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Why cluster OpenSIPS? Unlike Asterisk, a typical OpenSIPS server is able to handle a very large number of simultaneous SIP calls. It is generally very reliable and will keep running for many months, or even years, with little or no attention. As a consequence, it is the preferred choice for many VoIP service providers who use OpenSIPS as the primary public-facing portal into – and often out of – their voice infrastructure. This is fine as…
