On 5/8/20 12:13 PM, Willi Schiegel wrote: > Hello Nghia, > > I once asked a similar question about network architecture and got the > same answer as Martin wrote from Wido den Hollander: > > There is no need to have a public and cluster network with Ceph. Working > as a Ceph consultant I've deployed multi-PB Ceph clusters with a single > public network without any problems. Each node has a single IP-address, > nothing more, nothing less. > > In the current Ceph manual you can read > > It is possible to run a Ceph Storage Cluster with two networks: a public > (front-side) network and a cluster (back-side) network. However, this > approach complicates network configuration (both hardware and software) > and does not usually have a significant impact on overall performance. > For this reason, we generally recommend that dual-NIC systems either be > configured with two IPs on the same network, or bonded. > > I followed the advice from Wido "One system, one IP address" and > everything works fine. So, you should be fine with one interface for > MONs, MGRs, and OSDs. > Great to hear! I'm still behind this idea and all the clusters I design have a single (or LACP) network going to the host. One IP address per node where all traffic goes over. That's Ceph, SSH, (SNMP) Monitoring, etc. Wido > Best > Willi > > On 5/8/20 11:57 AM, Nghia Viet Tran wrote: >> Hi Martin, >> >> Thanks for your response. You mean one network interface for only MON >> hosts or for the whole cluster including OSD hosts? I’m confusing now >> because there are some projects that only useone public network for >> the whole cluster. That means the rebalancing, replicating objects and >> heartbeats from OSD hostswould affects the performance of Ceph client. >> >> *From: *Martin Verges <martin.verges@xxxxxxxx> >> *Date: *Friday, May 8, 2020 at 16:20 >> *To: *Nghia Viet Tran <Nghia.Viet.Tran@xxxxxxxxxx> >> *Cc: *"ceph-users@xxxxxxx" <ceph-users@xxxxxxx> >> *Subject: *Re: Cluster network and public network >> >> Hello Nghia, >> >> just use one network interface card and use frontend and backend >> traffic on the same. No problem with that. >> >> If you have a dual port card, use both ports as an LACP channel and >> maybe separate it using VLANs if you want to, but not required as well. >> >> >> -- >> >> Martin Verges >> Managing director >> >> Mobile: +49 174 9335695 >> E-Mail: martin.verges@xxxxxxxx <mailto:martin.verges@xxxxxxxx> >> Chat: https://t.me/MartinVerges >> >> croit GmbH, Freseniusstr. 31h, 81247 Munich >> CEO: Martin Verges - VAT-ID: DE310638492 >> Com. register: Amtsgericht Munich HRB 231263 >> >> Web: https://croit.io >> YouTube: https://goo.gl/PGE1Bx >> >> Am Fr., 8. Mai 2020 um 09:29 Uhr schrieb Nghia Viet Tran >> <Nghia.Viet.Tran@xxxxxxxxxx <mailto:Nghia.Viet.Tran@xxxxxxxxxx>>: >> >> Hi everyone, >> >> I have a question about the network setup. From the document, It’s >> recommended to have 2 NICs per hosts as described in below picture >> >> Diagram >> >> In the picture, OSD hosts will connect to the Cluster network for >> replicate and heartbeat between OSDs, therefore, we definitely need >> 2 NICs for it. But seems there are no connections between Ceph MON >> and Cluster network. Can we install 1 NIC on Ceph MON then? >> >> I appreciated any comments! >> >> Thank you! >> >> -- >> Nghia Viet Tran (Mr) >> >> _______________________________________________ >> ceph-users mailing list -- ceph-users@xxxxxxx >> <mailto:ceph-users@xxxxxxx> >> To unsubscribe send an email to ceph-users-leave@xxxxxxx >> <mailto:ceph-users-leave@xxxxxxx> >> >> >> _______________________________________________ >> ceph-users mailing list -- ceph-users@xxxxxxx >> To unsubscribe send an email to ceph-users-leave@xxxxxxx >> > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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