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Applies to SUSE Enterprise Storage 7

7 Troubleshooting networking

7.1 Identifying OSD networking issues

Ceph is a distributed storage system that depends on networks to peer with OSDs, replicate objects, recover from faults and check heartbeats. Networking issues can cause OSD latency and flapping OSDs. See Section 4.8, “Flapping OSDs” for details.

Ensure that Ceph processes and Ceph-dependent processes are connected and listening.

 ss -a | grep ceph
 ss -l | grep ceph
 sudo ss -p | grep ceph

Check network statistics:

ss -s
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