Package: mysql-server-5.1
Version: 5.1.61-0+squeeze1
Severity: important
Hi folks,
I'm running my MySQL server with the --skip-name-resolve.
I verified that this option is enabled via:
mysql> show variables LIKE 'skip_name_resolve'\G
*************************** 1. row ***************************
Variable_name: skip_name_resolve
Value: ON
1 row in set (0.00 sec)
Unfortunatelly SQL connections from remote hosts are very slow in the handshake
phase.
I found that this is the case for hosts where no PTR record is set.
After that I started a tcpdump on the mysql-server host looking for DNS queries
and I see several PTR lookup each time a remote client wants to connect.
If you need more information do not hesitate to contact me.
Cheers
B
-- System Information:
Debian Release: 6.0
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages mysql-server-5.1 depends on:
ii adduser 3.112+nmu2 add and remove users and groups
ii debconf [de 1.5.36.1 Debian configuration management sy
ii libc6 2.11.2-10 Embedded GNU C Library: Shared lib
ii libdbi-perl 1.612-1 Perl Database Interface (DBI)
ii libgcc1 1:4.4.5-8 GCC support library
ii libmysqlcli 5.1.61-0+squeeze1 MySQL database client library
ii libstdc++6 4.4.5-8 The GNU Standard C++ Library v3
ii lsb-base 3.2-23.2squeeze1 Linux Standard Base 3.2 init scrip
ii mysql-clien 5.1.61-0+squeeze1 MySQL database client binaries
ii mysql-commo 5.1.61-0+squeeze1 MySQL database common files, e.g.
ii mysql-serve 5.1.61-0+squeeze1 MySQL database server binaries
ii passwd 1:4.1.4.2+svn3283-2+squeeze1 change and administer password and
ii perl 5.10.1-17 Larry Wall's Practical Extraction
ii psmisc 22.11-1 utilities that use the proc file s
ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime
Versions of packages mysql-server-5.1 recommends:
ii heirloom-mailx [mailx] 12.4-2 feature-rich BSD mail(1)
ii libhtml-template-perl 2.9-2 module for using HTML Templates wi
Versions of packages mysql-server-5.1 suggests:
pn tinyca <none> (no description available)
-- debconf information excluded
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