Hi, we are running a cluster with 6 storage nodes(72 osds) and 3 monitors. The osds and and monitors are running on Ubuntu 14.04 and with ceph 0.94.5. We want to upgrade the cluster to Jewel and at the same time the OS to Ubuntu 16.04. What would be the best way to this? First to upgrade the OS and then ceph to 0.94.7 followed by 10.2.1. Or should we first upgrade Ceph and then Ubuntu? Or maybe doing it all at once?
Regards Sebastian
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