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D5: You want a local boot drive, and you want it to fall back to PXE booting if the local drive is unavailable. Your PXE image should default to the last known
by dsr_ 10y ago
D5: You want a local boot drive, and you want it to fall back to PXE booting if the local drive is unavailable. Your PXE image should default to the last known working image, and have a boot-time menu with options for a rescue image and an installer for your distribution of choice.
- sytse 10y agoThanks, added to the article with https://gitlab.com/gitlab-com/www-gitlab-com/commit/ef3c7e1cd8582f9291cd6efc29774f407aaf3a20 https://gitlab.com/gitlab-com/www-gitlab-com/commit/ef3c7e1c... (will take some minutes to roll out).
- __d 10y agoAnd memtest86.
- kkrs 10y agoIt's better to have it the other way around. Attempt to boot off the network and fall back to local drive. That will allow you to reimage a node without having to fiddle with the BIOS. For regular boot there should be no image configured. Network boot will fail and the node will boot off disk. However if an install image is configured for that node, you can reimage it at will. The install image should reset to having no image for that node, once it's done. You'll need to maintain an association between - dns, ip, mac address, ssh keys etc. Hardware break-fix workflow is usually ignored by most production engineers. You'll be doing that a lot. You want to get your hw back into use as fast as possible. Have you thought about how many spares (CPU, RAM, disks) you'll have to keep at your datacenters ?