Re: [ceph-users] Cluster network slower than public network

2017-11-16 Thread Wido den Hollander
> Op 16 november 2017 om 16:20 schreef David Turner : > > > There is another thread in the ML right now covering this exact topic. The > general consensus is that for most deployments, a separate network for > public and cluster is wasted complexity. > Indeed. Just for the record (when people

Re: [ceph-users] Cluster network slower than public network

2017-11-16 Thread David Turner
There is another thread in the ML right now covering this exact topic. The general consensus is that for most deployments, a separate network for public and cluster is wasted complexity. On Thu, Nov 16, 2017 at 9:59 AM Jake Young wrote: > On Wed, Nov 15, 2017 at 1:07 PM Ronny Aasen > wrote: >

Re: [ceph-users] Cluster network slower than public network

2017-11-16 Thread Jake Young
On Wed, Nov 15, 2017 at 1:07 PM Ronny Aasen wrote: > On 15.11.2017 13:50, Gandalf Corvotempesta wrote: > > As 10gb switches are expansive, what would happen by using a gigabit > cluster network and a 10gb public network? > > Replication and rebalance should be slow, but what about public I/O ? >

Re: [ceph-users] Cluster network slower than public network

2017-11-15 Thread Ronny Aasen
On 15.11.2017 13:50, Gandalf Corvotempesta wrote: As 10gb switches are expansive, what would happen by using a gigabit cluster network and a 10gb public network? Replication and rebalance should be slow, but what about public I/O ? When a client wants to write to a file, it does over the public

Re: [ceph-users] Cluster network slower than public network

2017-11-15 Thread Gandalf Corvotempesta
Any idea? I have 1 16 ports 10gb switch, 2 or more 24ports gigabit switches and 5 OSDs (MONs running over them) and 5 hypervisor servers to connect to the storage At least 10 ports are needed for each network, thus, 20 ports for both cluster and public, right ? I don't have 20 10gb ports Il

Re: [ceph-users] Cluster network slower than public network

2017-11-15 Thread Gandalf Corvotempesta
Small info: all of our nodes (3 to 5 plus 6 hypervisors) have 4 10gb ports but we only have 2 10gb switches (small port numbers, only 16, so we can't place both network on the same switch) We use 2 switches for HA in active-backup mode I was thinking to use both 10gb switches as public network (t

[ceph-users] Cluster network slower than public network

2017-11-15 Thread Gandalf Corvotempesta
As 10gb switches are expansive, what would happen by using a gigabit cluster network and a 10gb public network? Replication and rebalance should be slow, but what about public I/O ? When a client wants to write to a file, it does over the public network and the ceph automatically replicate it over