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<body class='hmmessage'><div dir='ltr'><span style="font-size: 12pt;">> Good afternoon, I'm planning to implement 4 node authoritative servers</span><br><div>> working in tandem, using mysql circular replication won't be nice<br>> because if one node fails the replication is broken.<br>> <br>> Though about having a 5th "management server" with mysql running as<br>> master for the other 4, this can be a tiny virtual machine which will<br>> be protected by the virtualization farm.<br>> <br>> Another idea would be to work with pairs, each pair in a multimaster<br>> mysql replication setup, running application level replication between<br>> pairs<br>> <br>> Any comments?<br><br></div><div><div>If you want a highly available DNS setup, I would cordially</div><div>recommend that instead of MySQL, you configure Oracle RAC</div><div>(preferrably, but not necessarily with ASM) and use the "oracle"</div><div>pdns back-end.</div><div><br></div><div>This will give you synchronous multimaster replication between</div><div>the database nodes.</div></div> </div></body>
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