Bug 594670 - ypbind probes for the fastest server too often
Summary: ypbind probes for the fastest server too often
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: ypbind
Version: 4.8
Hardware: All
OS: Linux
Target Milestone: rc
: ---
Assignee: Honza Horak
QA Contact: qe-baseos-daemons
: 680351 (view as bug list)
Depends On:
TreeView+ depends on / blocked
Reported: 2010-05-21 10:08 UTC by Tomas Smetana
Modified: 2018-11-14 17:40 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of: 594668
Last Closed: 2011-07-19 06:31:38 UTC

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2011:0955 normal SHIPPED_LIVE ypbind bug fix update 2011-07-19 06:31:32 UTC

Description Tomas Smetana 2010-05-21 10:08:32 UTC
+++ This bug was initially created as a clone of Bug #594668 +++

Description of problem:
The ypbind manual page says that it checks the current server every 20s to confirm it is up, and also pings all configured servers every 15 minutes to check on which is currently the fastest to respond. In fact it pings the servers every minute which may cause ypbind to flip the servers very often.

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

How reproducible:

Steps to Reproduce:
1. configure ypbind to try to contact more servers, i.e. add two servers to /etc/yp.conf (one of them must be reachable):


2. start ypbind in the debug mode

ypbind -debug

3. it logs out the pings of the servers
Actual results:
The "Check new for fastest server." logs appear every minute:

Expected results:
The "Check new for fastest server" logs appear every 15 minutes (as documented)

Additional info:
This seems to be caused by the ypbind-mt-1.17-log-binds.patch which contains the following chunk:
@@ -1024,7 +1049,8 @@ test_bindings (void *param __attribute__
 	pthread_exit (&success);
       lastcheck += ping_interval;
-      if (lastcheck >= 900) /* 900 = 15min. */
+      //if (lastcheck >= 900) /* 900 = 15min. */
+      if (lastcheck >= 60) /* 900 = 15min. */
 	lastcheck = 0;
       lastcheck = test_bindings_once(lastcheck);

At the first glance it looks like this has been added for the debugging purposes to test the patch for the bug #198689.  We should revert this part or explain why does the interval have to be shortened this much and fix the documentation.

Comment 1 Karel Klíč 2010-05-21 10:58:23 UTC
Yes, the limit should be set back to 900 (15 minutes).

Comment 2 RHEL Product and Program Management 2010-10-22 18:53:43 UTC
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated in the
current release, Red Hat is unfortunately unable to address this
request at this time. Red Hat invites you to ask your support
representative to propose this request, if appropriate and relevant,
in the next release of Red Hat Enterprise Linux.

Comment 3 Masahiro Matsuya 2011-02-25 08:32:13 UTC
*** Bug 680351 has been marked as a duplicate of this bug. ***

Comment 15 errata-xmlrpc 2011-07-19 06:31:38 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


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