On Thu, 27 Aug 2020 at 13:21, Anthony D'Atri <anthony.datri@xxxxxxxxx> wrote: > > > > > > 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. > Agreed. Odd number is the target end state. > > > - 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. > Never said I was doing all three. One at a time as per suggested proc. We would be upgrading MGRs, MONs in one go given they are collocated on the same nodes. > > > - 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 ;) > ?? Not sure I follow. Our question is around Ceph Orchestrator vs Ansible. The idea of having something managed by the Ceph project vs. a bolt-on. There are valid arguments for both. My comments were not intended to offend. Our objective is to reduce complexity / moving parts in managing ceph as a whole. Given the project has native orchestrator it would be preferred to leverage / transition into that (for our deployment). > > > 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? > Is there a compelling reason not to proceed? Is it not the next stable release? 4 updates since release so far. Specifically, I'm after object lock and other performance efficiencies. > > > 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? > It's a RHEL / CentOS thing. Mainline and Ubuntu kernels support is just fine. It's a mature HBA :) extensively deployed and used in scale out storage clusters. > > 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. > Thats the intent. I'm looking for validation / experiences and others from their upgrades. > > 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 > > Noted. It's a valid scenario as well. _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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