On 11/28/2016 10:08 PM, Stephen Davies wrote:
My databases were off the air for 24 hours.
On the up side, you've learned a couple of important lessons about operating production services. The first of them is this: Set up a test environment and actually test your changes there, first.
Increasingly, the other best practice is this: don't upgrade your systems in-place. Decouple your data and your software. When you need to update your software, build a new system and connect your data to it. Automate the process. With automation in place, this process is easier than upgrading your services, and provides a fall-back mechanism in the event of failure. I was reluctant to adopt that mode of operation, at first, but as I get closer to that practice, I find operations less laborious and more reliable.
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