Re: Stopping DNS Lookups
Yes, that's exactly what the link from Hassan said to do. Interestingly, what is not stated in that link is that you must add entries in mysql tables 'db' and 'user' for '127.0.0.1' (a.k.a. 'localhost') if you need to access the database from the local server. Remote access via static IP (assuming those entries were already in 'db' and 'user') work fine, but 'localhost' no longer works after the reboot. Cheers, -Richard Moon's Father wrote: Add skip-name-reslove in my.cnf and restart mysql immediately. On Thu, Oct 23, 2008 at 12:37 AM, Richard S. Huntrods [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Awesome! Thanks very much - exactly what I was looking for. I'm in the field and was under the gun, otherwise would have checked the manuals first. Again, thanks. -Richard Hassan Schroeder wrote: On Wed, Oct 22, 2008 at 7:40 AM, Richard S. Huntrods [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Recently I had to start monitoring the firewall traffic on this intranet, and discovered the MySQL server is routinely sending queries to the main DNS server (outside the firewall). I suspect the server is performing reverse DNS lookups for some reason. Is there a quick way of disabling these calls to the DNS server? See http://dev.mysql.com/doc/refman/5.0/en/dns.html HTH, -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- I'm a MySQL DBA in china. More about me just visit here: http://yueliangdao0608.cublog.cn -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Stopping DNS Lookups
Not on my testing system (Win-XP). I test on Win-XP but deploy on Unix. Not only that, but the production application servers are separate from the database server, so I never use localhost in production anyway. But on the XP test server, I had to add the 127.0.0.1 entries to 'db' and 'user' - 'localhost' alone did not work. I did not test whether or not 'localhost' would work on a Unix server as this was not something I required. Would be a good test, though. Cheers, -Richard Martin Gainty wrote: Richard- That should work..curious if localhost is mapped elsewhere? Martin __ Disclaimer and confidentiality note Everything in this e-mail and any attachments relates to the official business of Sender. This transmission is of a confidential nature and Sender does not endorse distribution to any party other than intended recipient. Sender does not necessarily endorse content contained within this transmission. Date: Fri, 24 Oct 2008 07:51:44 -0700 From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] CC: [EMAIL PROTECTED]; mysql@lists.mysql.com Subject: Re: Stopping DNS Lookups Yes, that's exactly what the link from Hassan said to do. Interestingly, what is not stated in that link is that you must add entries in mysql tables 'db' and 'user' for '127.0.0.1' (a.k.a. 'localhost') if you need to access the database from the local server. Remote access via static IP (assuming those entries were already in 'db' and 'user') work fine, but 'localhost' no longer works after the reboot. Cheers, -Richard Moon's Father wrote: Add skip-name-reslove in my.cnf and restart mysql immediately. On Thu, Oct 23, 2008 at 12:37 AM, Richard S. Huntrods [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Awesome! Thanks very much - exactly what I was looking for. I'm in the field and was under the gun, otherwise would have checked the manuals first. Again, thanks. -Richard Hassan Schroeder wrote: On Wed, Oct 22, 2008 at 7:40 AM, Richard S. Huntrods [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Recently I had to start monitoring the firewall traffic on this intranet, and discovered the MySQL server is routinely sending queries to the main DNS server (outside the firewall). I suspect the server is performing reverse DNS lookups for some reason. Is there a quick way of disabling these calls to the DNS server? See http://dev.mysql.com/doc/refman/5.0/en/dns.html HTH, -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- I'm a MySQL DBA in china. More about me just visit here: http://yueliangdao0608.cublog.cn -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] You live life beyond your PC. So now Windows goes beyond your PC. See how http://clk.atdmt.com/MRT/go/115298556/direct/01/ -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Stopping DNS Lookups
Add skip-name-reslove in my.cnf and restart mysql immediately. On Thu, Oct 23, 2008 at 12:37 AM, Richard S. Huntrods [EMAIL PROTECTED]wrote: Awesome! Thanks very much - exactly what I was looking for. I'm in the field and was under the gun, otherwise would have checked the manuals first. Again, thanks. -Richard Hassan Schroeder wrote: On Wed, Oct 22, 2008 at 7:40 AM, Richard S. Huntrods [EMAIL PROTECTED] wrote: Recently I had to start monitoring the firewall traffic on this intranet, and discovered the MySQL server is routinely sending queries to the main DNS server (outside the firewall). I suspect the server is performing reverse DNS lookups for some reason. Is there a quick way of disabling these calls to the DNS server? See http://dev.mysql.com/doc/refman/5.0/en/dns.html HTH, -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- I'm a MySQL DBA in china. More about me just visit here: http://yueliangdao0608.cublog.cn
Stopping DNS Lookups
I have a server that runs only MySQL. It services several other servers inside a firewalled intranet. All connections to the MySQL database are done using static IP addresses. Recently I had to start monitoring the firewall traffic on this intranet, and discovered the MySQL server is routinely sending queries to the main DNS server (outside the firewall). I suspect the server is performing reverse DNS lookups for some reason. Is there a quick way of disabling these calls to the DNS server? This is a pretty much stock installation of MySQL 5.0.51a on Solaris 10 (AMD 64), 64 bit. Thanks in advance, -Richard -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Stopping DNS Lookups
[EMAIL PROTECTED] wrote: Point to an internal dns server We don't have one. Is somebody with a weird hostname connecting to your server via ssh ? Nope. This is occurring while the server's intranet is totally unmanned. -Richard --Original Message-- From: Richard S. Huntrods To: mysql@lists.mysql.com Sent: Oct 22, 2008 07:40 Subject: Stopping DNS Lookups I have a server that runs only MySQL. It services several other servers inside a firewalled intranet. All connections to the MySQL database are done using static IP addresses. Recently I had to start monitoring the firewall traffic on this intranet, and discovered the MySQL server is routinely sending queries to the main DNS server (outside the firewall). I suspect the server is performing reverse DNS lookups for some reason. Is there a quick way of disabling these calls to the DNS server? This is a pretty much stock installation of MySQL 5.0.51a on Solaris 10 (AMD 64), 64 bit. Thanks in advance, -Richard -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Stopping DNS Lookups
On Wed, Oct 22, 2008 at 7:40 AM, Richard S. Huntrods [EMAIL PROTECTED] wrote: Recently I had to start monitoring the firewall traffic on this intranet, and discovered the MySQL server is routinely sending queries to the main DNS server (outside the firewall). I suspect the server is performing reverse DNS lookups for some reason. Is there a quick way of disabling these calls to the DNS server? See http://dev.mysql.com/doc/refman/5.0/en/dns.html HTH, -- Hassan Schroeder [EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Stopping DNS Lookups
Awesome! Thanks very much - exactly what I was looking for. I'm in the field and was under the gun, otherwise would have checked the manuals first. Again, thanks. -Richard Hassan Schroeder wrote: On Wed, Oct 22, 2008 at 7:40 AM, Richard S. Huntrods [EMAIL PROTECTED] wrote: Recently I had to start monitoring the firewall traffic on this intranet, and discovered the MySQL server is routinely sending queries to the main DNS server (outside the firewall). I suspect the server is performing reverse DNS lookups for some reason. Is there a quick way of disabling these calls to the DNS server? See http://dev.mysql.com/doc/refman/5.0/en/dns.html HTH, -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
