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Bug 1558943 - winbind use 100%cpu and disfunctional
Summary: winbind use 100%cpu and disfunctional
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: samba
Version: 7.4
Hardware: x86_64
OS: Linux
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Andreas Schneider
QA Contact: Robin Hack
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-03-21 11:24 UTC by m.wandel
Modified: 2018-10-30 08:01 UTC (History)
4 users (show)

Fixed In Version: samba-4.8.0-1.el7
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-10-30 07:59:53 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:3056 0 None None None 2018-10-30 08:01:00 UTC

Description m.wandel 2018-03-21 11:24:38 UTC 
Description of problem:

we have a setup with samba fileserver joined to a ad domain. We are using winbind and approx. 350 client with more than 10000 open files on the shares.

after a while (some hours) the winbind process uses 100%, but it is functional, then after a time the winbind is disfunctional without any errors in the log (log level=6)

Version-Release number of selected component (if applicable):

samba-winbind-4.6.2-12.el7_4.x86_64
samba-winbind-clients-4.6.2-12.el7_4.x86_64
samba-winbind-modules-4.6.2-12.el7_4.x86_64

How reproducible:
that will be difficult in synthetic.

Actual results:
disfunctional nss id mapping

Expected results:
working nss id mapping

Additional info:
stripped smb.conf

[global]
	workgroup = EXAMPLE-AD
        security = ADS
        realm = EXAMPLE-AD
        idmap config * : backend = tdb
        idmap config * : range = 99000 - 100000
        idmap config EXAMPLE-AD : backend = ad
        idmap config EXAMPLE-AD : schema_mode = rfc2307
        idmap config EXAMPLE-AD : range = 200 - 90000
	    idmap config EXAMPLE-AD : unix_nss_info = yes
        winbind use default domain = yes
        winbind nss info = rfc2307
	winbind cache time = 1800
	max open files = 170000
	csc policy = disable
	socket options = TCP_NODELAY SO_KEEPALIVE TCP_KEEPCNT=4 TCP_KEEPIDLE=240 TCP_KEEPINTVL=15
	write cache size = 262144
        use sendfile = no
    	winbind max clients = 400
    	winbind max domain connections = 4
Comment 2 Andreas Schneider 2018-03-21 16:32:49 UTC 
This could be

https://bugzilla.samba.org/show_bug.cgi?id=13292

and

https://bugzilla.samba.org/show_bug.cgi?id=13290
Comment 6 errata-xmlrpc 2018-10-30 07:59:53 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2018:3056
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