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Hello Fabric,
We are testing the Network performance between two Fabric nodes, and we initially used iperf to transfer files between two nodes, which is a memory-to-memory transformation. However, we are exploring the possibility of using scp to perform disk-to-disk transfers between two Fabric nodes. We were wondering if there is any suggestions for achieving this.
Thanks,
Best Regards,
XushengWe in CMB-S4 project have been copying files between Fabric nodes using scp for testing.
The elements of that setup include
1) install scp (something ‘yum install openssh-clients’, though it depends on the platform)2) create an L3 network on each of the two nodes
3) add a route between these
4) setup ssh keys ( id_rsa id.rsa.pub ) on nodes, add entry to ~/.ssh/authorized_keys
We can provide more details on each of these steps if it helps. And some snippets of this setup will be presented in the presentation of Don Petravick et al. Wed Apr 26 in the meeting.
Beyond copying files with scp, we are also looking for a more performant way to copy files; some testing with bbcp had some brief success but it has not worked consistently, don’t think it supports IPv6, so we continue to look for performant file transfer approaches.
On step 4, do we need to generate the ssh keys on the node itself or use the keys associated with the slice?
On step 4, do we need to generate the ssh keys on the node itself or use the keys associated with the slice?
Never mind, thank you very much.
Yes I think there is a lot of flexibility with those ssh keys — FABRIC is doing some setup with the Slice key etc, so probably just best to not interfere with the Slice key (could lock oneself out of the nodes) . Just make a new ssh key pair somewhere, and then stage them into place onto the nodes, and add to ~/.ssh/authorized_keys .
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