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by nine_k
59 days ago
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There are two interesting parts in the post. One is about all the steps of zero downtime migration. It's widely applicable. The other is the decision to replace a cloud instance with bare metal. It saves a lot in costs, but also the loss of fast failover and data backups is priced in. If I were doing this, I would run a hot spare for an extra $200, and switched the primary every few days, to guarantee that both copies work well, and the switchover is easy. It would be a relatively low price for a massive reduction of the risk of a catastrophic failure. |
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