Intermittant mysql connectivity from some webservers on Nov 25th

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Summary:

At approx 12:10 and 19:06 some customers on 2 web servers on our new system websites were showing mysql errors.

We've traced this issue back to a misconfiguration of a vlan interface for a VPN to have the wrong master and secondary IP addresses. In each case the interface was shut down and it remains shutdown.

The affected machines were pemlinweb08 and pemlinweb09. As we've found the reason for this problem occurring we've permanently fixed it so when we bring the interface online again this won't reoccur. We'll be monitoring internal communication between the web and db servers for a couple of days to ensure that there are no other issues.