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Bug #47879

open

default port range allows for 62.5 OSDs

Added by Jan Fajerski over 3 years ago. Updated over 3 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
% Done:

0%

Source:
Tags:
Backport:
Regression:
No
Severity:
4 - irritation
Reviewed:
Affected Versions:
ceph-qa-suite:
Pull request ID:
Crash signature (v1):
Crash signature (v2):

Description

The default port range for OSD and MDS daemons currently seems to allow for an uneven number of OSDs. https://docs.ceph.com/en/latest/rados/configuration/network-config-ref/#bind

500 ports at 8 ports per OSD allows 62.5. I'm unsure whether OSDs always take 8 ports, but if so we should probably adjust the default?

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 #1

Updated by Michael Fritch over 3 years ago

Jan Fajerski wrote:

The default port range for OSD and MDS daemons currently seems to allow for an uneven number of OSDs. https://docs.ceph.com/en/latest/rados/configuration/network-config-ref/#bind

500 ports at 8 ports per OSD allows 62.5. I'm unsure whether OSDs always take 8 ports, but if so we should probably adjust the default?

at one point, it would appear that 4 ports per OSD were consumed:
https://tracker.ceph.com/issues/12655
https://github.com/ceph/ceph/pull/5600

But, this has apparently changed, while a scale out architecture is preferred, perhaps it is time to re-evaluate the port range (7300-6800) for support a more dense chassis?

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