Hi All I have a few questions pertaining to management of MONs and OSDs. This is in a Ceph 2.x context only. ----------------------------------------------- 1) Can MONs be placed in something resembling maintenance mode (for firmware updates, patch reboots, etc.). If so how? If not how addressed?
2) Can OSDs be placed in something resembling maintenance mode (for firmware updates, patch reboots, etc.). If so how? If not how addressed? 3) Can MONs be "replaced/migrated" efficiently in a hardware upgrade scenario? If so how? If not how addressed? 4) Can OSDs be "replaced/migrated" efficiently in a hardware upgrade scenario? If so how? If not how addressed? ----------------------------------------------- I suspect the answer is somewhat nuanced and has to do with timeouts and such. Please describe how these things are successully handled in production settings. The goal here is to automate such things in a management tool so the strategies should be well worn. If the answer is "no you can't and it's not addressed in Ceph" is this a potential roadmap item? If addressed in previous discussions please forgive me and point me to them - new to the list. Thanks in advance! -- Jeff Applewhite Principal Product Manager
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