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http://issues.apache.org/bugzilla/show_bug.cgi?id=30722 ProxyPass results in an occasional DNS lookup failure Summary: ProxyPass results in an occasional DNS lookup failure Product: Apache httpd-2.0 Version: 2.0.50 Platform: Sun OS/Version: Solaris Status: NEW Severity: Normal Priority: Other Component: mod_proxy AssignedTo: [email protected] ReportedBy: [EMAIL PROTECTED] Using ProxyPass and ReverseProxyPass within a virtual host to pass on all traffic to an internal webserver ( Apache 1.3 for Oracle Application Server ). Roughly 1 in 10 requests, be it for pages or images, result in ; Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could not handle the request GET /pls/pls/portal/url/page/blahblahblah Reason: DNS lookup failure for: test.myservernamewashere.com ---- Debug log looks like ; [Wed Aug 18 10:43:21 2004] [debug] mod_cache.c(157): cache: no cache - add cache_in filter and DECLINE [Wed Aug 18 10:43:21 2004] [debug] proxy_http.c(66): proxy: HTTP: canonicalising URL //test.myservernamewashere.com/pls/pls/portal/url/page/blahblahblah [Wed Aug 18 10:43:21 2004] [debug] mod_proxy.c(416): Trying to run scheme_handler [Wed Aug 18 10:43:21 2004] [debug] proxy_http.c(1073): proxy: HTTP: serving URL http://test.myservernamewashere.com/pls/pls/portal/url/page/blahblahblah?menu=m1open [Wed Aug 18 10:43:21 2004] [debug] proxy_http.c(185): proxy: HTTP connecting http://test.myservernamewashere.com/pls/pls/portal/url/page/blahblahblah?menu=m1open to test.myservernamewashere.com:80 [Wed Aug 18 10:43:21 2004] [error] [client 81.144.201.222] proxy: DNS lookup failure for: test.myservernamewashere.com returned by /pls/pls/portal/url/page/blahblahblah, referer: http://test.myservernamewashere.com/portal/page?_pageid=53,393023&_dad=portal&_schema=PORTAL ------ Notes ; Mod cache ( memory ) is enabled. We're not using a DNS server, just /etc/hosts, on Sparc Solaris 9 We're using name based virtual hosts, not ip addressed based The internal server has the same virtual hostname as the external virtual hostname. Full apache config available on request. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
