MySQL Bugs: #17582: ndb_config host lookups broken

Bug #17582	ndb_config host lookups broken
Submitted:	20 Feb 2006 13:23	Modified:	2 Nov 2006 4:54
Reporter:	Hartmut Holzgraefe	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Cluster: Cluster (NDB) storage engine	Severity:	S3 (Non-critical)
Version:	4.1 and up	OS:	Any (*)
Assigned to:	Hartmut Holzgraefe	CPU Architecture:	Any

Description:
The ndb_config --host option does not perform the 
intended host name lookups, instead it just compares
host names from the configuration file to the --host 
parameter using simple string compare

this makes ndb_config useless for init scripts as
one can't rely on "ndb_config --host=`hostname` ..."
to return configuration settings for a machine

How to repeat:
use "ndb_config --host=... ..." using a different hostname 
for a node machine than the one used in the management
servers config file, although it does match the same address,
e.g. IP address vs. host name or full vs. short host name

Suggested fix:
use gethostbyname() and compare the resulting address
for hostnames instead of simple string compare

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/2908

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/11107

ChangeSet@1.2250, 2006-08-30 20:45:43+02:00, hartmut@mysql.com +1 -0
  make DNS based hostname queries work (bug #17582)

pushed to 5.0.25

Merged into 5.1.12

My patch uncovered a different errer that was hidden in the method that was never called so far ... will commit another fix soon (and will include test cases this time)

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/11892

ChangeSet@1.2261, 2006-09-13 23:19:18+02:00, hartmut@mysql.com +3 -0
  Fixed host name comparison (still Bug #17582)

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/11900

ChangeSet@1.2263, 2006-09-14 00:12:17+02:00, hartmut@mysql.com +1 -0
  Changed to use NdbAutoPtr instead of explicit free() calls 
  as suggested by Jonas (still Bug #17582)

pushed into 5.1.12

pushed into 5.0.29

wont fix in 4.1

Thank you for your bug report. This issue has been committed to our source repository of that product and will be incorporated into the next release.

If necessary, you can access the source repository and build the latest available version, including the bug fix. More information about accessing the source trees is available at

    http://dev.mysql.com/doc/en/installing-source.html

Documented for 5.0.29 & 5.1.12.

*Fix for 5.0 documented in 5.0.30 Release Notes.*