> > Looking for a bit of guidance / approach to upgrading from Nautilus to > Octopus considering CentOS and Ceph-Ansible. > > We're presently running a Nautilus cluster (all nodes / daemons 14.2.11 as > of this post). > - There are 4 monitor-hosts with mon, mgr, and dashboard functions > consolidated;
You want an odd number of mons. Add or remove one. > - 4 RGW hosts > - 4 ODS costs, with 10 OSDs each. This is planned to scale to 7 nodes > with additional OSDs and capacity (considering to do this as part of > upgrade process) Don’t tempt fate. One thing at a time. Not three. > - Currently using ceph-ansible (however it's a process to maintain scripts > / configs between playbook versions - although a great framework, not ideal > in our case; ^ Kefu ;) > Octopus support on CentOS 7 is limited due to python dependencies, as a > result we want to move to CentOS 8 or Ubuntu 20.04. Do you have a compelling reason to go to Octopus today? > The other outlier is CentOS native Kernel support for LSI2008 (eg. 9211) > HBAs which some of our > OSD nodes use. How is this a factor, do newer kernels drop support for that old HBA? > Here's an upgrade path scenario that is being considered. At a high-level: I suggest that if you are set on doing this, you do one step at a time and don’t try to get fancy. Especially since you only have one cluster. I believe there are Nautlius packages available for CentOS 8 now, so perhaps: * Update each node — serially — to CentOS 8 + new Ceph packages * Update to Octopus via the documented method * Add your new nodes _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
