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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=23501 [mod_rewrite] incorrect load balancing solution Summary: [mod_rewrite] incorrect load balancing solution Product: Apache httpd-2.0 Version: 2.0.47 Platform: All URL: http://httpd.apache.org/docs-2.0/misc/rewriteguide.html OS/Version: All Status: NEW Severity: Normal Priority: Other Component: Documentation AssignedTo: [email protected] ReportedBy: [EMAIL PROTECTED] The rewrite guide incorrect gives an example using BIND syntax that's been deprecated for awhile now. Both 2.0 and 1.3 documentation has the same problem. The example is for: Load Balancing Description: Suppose we want to load balance the traffic to www.foo.com over www[0-5].foo.com (a total of 6 servers). How can this be done? The solution goes on to list multiple cnames for the same label: www IN CNAME www0.foo.com. IN CNAME www1.foo.com. IN CNAME www2.foo.com. IN CNAME www3.foo.com. IN CNAME www4.foo.com. IN CNAME www5.foo.com. IN CNAME www6.foo.com. This is incorrect, according to RFC 2181 (and other DNS RFCs): "There may be only one such canonical name for any one alias." BIND 8 (and prior versions) could be made to work with multiple cnames, but BIND 9 no longer supports it at all. The correct implementation uses multiple A records for the label, like so: www IN A 1.2.3.1 IN A 1.2.3.2 IN A 1.2.3.3 IN A 1.2.3.4 IN A 1.2.3.5 IN A 1.2.3.6 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
