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How To Migrate Linux Servers Across Cloud Providers
- moe 16y agoWhat a horrible idea.
- garyrichardson 16y agoWhy, in particular, do you think so? On a one off basis, it sounds like a good idea. I do think in the long run you're better off to use a build process/documentation to allow rebuilding of hosts. This is especially true if you're running 100's of instances.
- moe 16y agoExactly what you're saying. If you need to maintain multiple hosts then use proper tooling, be it puppet, chef, FAI, git, virtualization, or even a homegrown set of bootstrap scripts. Rsync'ing random stuff from one host to another will hardly end well, except for truly one-off stuff that gets closely reviewed during the process. File location and contents vary wildly, even between slightly different [package] versions of the same distribution. Trying to automate that stuff without even looking at what the package manager of the respective hosts has to say is a recipe for disaster. Sure, your script may work today right after you tested it with two near identical RedHat hosts. I promise it will fail badly when you try to run it again 6 months from now. Or rather, it will probably run nearly fine, but bury some interesting surprises for you to find out about later...
- 619Cloud 16y agoElaborate? We have used it in production to move servers from Slicehost to Rackspace Cloud Files and it worked flawlessly.
- prodigal_erik 16y agoReading about efforts like this makes me glad we write a half-page spec file and build an RPM for each service we've created. We're finally free of servers whose configuration is a hand-crafted artwork needing this sort of attention. We just "yum install" on a fresh machine (or a xen instance in dev or qa), smoke test, and call it a day.