Options, in order of desirability: The "right" way to configure such a setup when creating the cluster would be to define each physical machine as a "rack", and then use the right replication/snitch configurations to give you rack awareness, so you wouldn't have 2 replicas on the same physical machine.
If you haven't done that, your next option is probably to decommission one of the VMs on the machine (or migrate it to another machine), so the physical machine only has 1 replica of the data. Then you can turn the machine off temporarily and only 1 replica will be down. If neither of those are options, running repair will guarantee that at least one other replica has the data (at least at the time you run repair), but you'll lose quorum while the machine is down. On Thu, Dec 14, 2017 at 11:00 AM, Alaa Zubaidi (PDF) <alaa.zuba...@pdf.com> wrote: > Hi, > I have a cluster of 8 Nodes, 4 physical machines 2 VMs each physical > machine. > RF=3, and we have read/write with QUORUM consistency requirement. > > One of the machines needs to be down for an hour or two to fix local disk. > What is the best way to do that with out losing data? > > Regards > -- Alaa > > *This message may contain confidential and privileged information. If it > has been sent to you in error, please reply to advise the sender of the > error and then immediately permanently delete it and all attachments to it > from your systems. If you are not the intended recipient, do not read, > copy, disclose or otherwise use this message or any attachments to it. The > sender disclaims any liability for such unauthorized use. PLEASE NOTE that > all incoming e-mails sent to PDF e-mail accounts will be archived and may > be scanned by us and/or by external service providers to detect and prevent > threats to our systems, investigate illegal or inappropriate behavior, > and/or eliminate unsolicited promotional e-mails (“spam”). If you have any > concerns about this process, please contact us at * > *legal.departm...@pdf.com* <legal.departm...@pdf.com>*.*
