Bug 1509374 – [RADOS]: "ceph log last" is not fetching exact number of lines specified

Bugzilla will be upgraded to version 5.0. The upgrade date is tentatively scheduled for 2 December 2018, pending final testing and feedback.

Bug 1509374 - [RADOS]: "ceph log last" is not fetching exact number of lines specified

Summary:	[RADOS]: "ceph log last" is not fetching exact number of lines specified

Status:	POST

Aliases:	None

Product:	Red Hat Ceph Storage
Classification:	Red Hat
Component:	RADOS (Show other bugs)
Sub Component:
Version:	3.0
Hardware:	x86_64 Linux

Priority	unspecified Severity low
Target Milestone:	rc
Target Release:	3.*
Assigned To:	Kefu Chai
QA Contact:	ceph-qe-bugs
Docs Contact:	Bara Ancincova

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:	1494421
	Show dependency tree / graph

Reported:	2017-11-03 12:07 EDT by shylesh
Modified:	2018-02-22 07:26 EST (History)
CC List:	5 users (show)

See Also:
Fixed In Version:
Doc Type:	Known Issue
Doc Text:	.`ceph log last` does not display the exact number of specified lines The `ceph log last <number>` command shows the specified number of lines from the cluster log and cluster audit log, by default located at `/var/log/ceph/<cluster-name>/.log` and `/var/log/ceph/<cluster-name>.audit.log`. Currently, the command does not display the exact number of specified lines. To work around this problem, use the `tail -<number> <log-file>` command.
Story Points:	---
Clone Of:
Environment:
Last Closed:
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Comment 4 Kefu Chai 2017-11-06 11:04:44 EST

> `tail <number> <log-file>` command.

the command is 

tail -<number> <log-file>

and this is not accurate. for cluster log, <log-file> is by default /var/log/ceph/${cluster_name}.log, for audit log, /var/log/ceph/${cluster_name}.audit.log

they are configurable using "mon_cluster_log_file". in the form of 

default=/var/log/ceph/$cluster.$channel.log,cluster=/var/log/ceph/$cluster.log

see http://docs.ceph.com/docs/master/rados/troubleshooting/log-and-debug/.

Note You need to log in before you can comment on or make changes to this bug.