Hi, We've got an issue that hopefully you'll be able to shed some light on for us...
Our environment: Apache: 2.0.46 build august 1 2006 09:25:45 Red Hat ES 3 update 4: linux 2.4.31-27.ELsmp #1 JBOSS: 4.0.1 Java: 1.4.2_06-b03 The situation we have is as follows: We have a JBOSS application that listens on ports 18080 and 18443 (https). This application normally sits behind an apache server that uses a reverse proxy to forward 443 requests to the JBOSS application server listening on port 18080. We are using a third party tool that load tests the web application. We are placing the application under heavy volumes. Scenario 1: When the load test application is configured to mimic 5-10 simultaneous users accessing the JBOSS application via the apache web server on port 443 (i.e. <https://server/blah/login.do> etc) , we receive the occasional 502 Proxy error and a JBOSS exception from our application to do with "FindByPrimaryKey with null passed in as an argument". Scenario 2: When the load test application is configured to mimic 50 simultaneous users accessing the JBOSS application directly on port 18443 (bypassing apache i.e. (i.e. https://server:18443/blah/login.do etc), we receive no exceptions and there are no 502 errors. >From the above, we suspect that apache could be somehow causing the 502 proxy error which may perhaps have led to the FindByPrimaryKey errors. If you could have a quick look through the logs and in particular the apache config file that would be fantastic. Are we not setting something within Apache that's causing the 502s when the web server is being bombarded with requests? Is the Apache timeout too low? Do we need to set something else in Apache to cater for situations of excess load? Below is our apache config file: --------------------- ServerTokens OS ServerRoot "/etc/httpd" PidFile run/httpd.pid Timeout 300 KeepAlive Off MaxKeepAliveRequests 100 KeepAliveTimeout 15 <IfModule prefork.c> StartServers 8 MinSpareServers 5 MaxSpareServers 20 MaxClients 150 MaxRequestsPerChild 1000 </IfModule> <IfModule worker.c> StartServers 2 MaxClients 150 MinSpareThreads 25 MaxSpareThreads 75 ThreadsPerChild 25 MaxRequestsPerChild 0 </IfModule> Listen 0.0.0.0:80 LoadModule access_module modules/mod_access.so LoadModule auth_module modules/mod_auth.so LoadModule auth_anon_module modules/mod_auth_anon.so LoadModule auth_dbm_module modules/mod_auth_dbm.so LoadModule auth_digest_module modules/mod_auth_digest.so LoadModule include_module modules/mod_include.so LoadModule log_config_module modules/mod_log_config.so LoadModule env_module modules/mod_env.so LoadModule mime_magic_module modules/mod_mime_magic.so LoadModule cern_meta_module modules/mod_cern_meta.so LoadModule expires_module modules/mod_expires.so LoadModule deflate_module modules/mod_deflate.so LoadModule headers_module modules/mod_headers.so LoadModule usertrack_module modules/mod_usertrack.so LoadModule unique_id_module modules/mod_unique_id.so LoadModule setenvif_module modules/mod_setenvif.so LoadModule mime_module modules/mod_mime.so LoadModule dav_module modules/mod_dav.so LoadModule status_module modules/mod_status.so LoadModule autoindex_module modules/mod_autoindex.so LoadModule asis_module modules/mod_asis.so LoadModule info_module modules/mod_info.so LoadModule dav_fs_module modules/mod_dav_fs.so LoadModule vhost_alias_module modules/mod_vhost_alias.so LoadModule negotiation_module modules/mod_negotiation.so LoadModule dir_module modules/mod_dir.so LoadModule imap_module modules/mod_imap.so LoadModule actions_module modules/mod_actions.so LoadModule speling_module modules/mod_speling.so LoadModule userdir_module modules/mod_userdir.so LoadModule alias_module modules/mod_alias.so LoadModule rewrite_module modules/mod_rewrite.so LoadModule proxy_module modules/mod_proxy.so LoadModule proxy_http_module modules/mod_proxy_http.so LoadModule proxy_connect_module modules/mod_proxy_connect.so LoadFile /usr/lib/libxml2.so LoadModule cache_module modules/mod_cache.so LoadModule suexec_module modules/mod_suexec.so LoadModule disk_cache_module modules/mod_disk_cache.so LoadModule file_cache_module modules/mod_file_cache.so LoadModule mem_cache_module modules/mod_mem_cache.so Include conf.d/*.conf User apache Group apache ServerAdmin [EMAIL PROTECTED] ServerName rhino:80 UseCanonicalName Off DocumentRoot "/var/www/html" DirectoryIndex index.html index.htm login.do AccessFileName .htaccess <Files ~ "^\.ht"> Order allow,deny Deny from all </Files> TypesConfig /etc/mime.types DefaultType text/plain <IfModule mod_mime_magic.c> # MIMEMagicFile /usr/share/magic.mime MIMEMagicFile conf/magic </IfModule> HostnameLookups Off ErrorLog logs/error_log LogLevel warn LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined LogFormat "%h %l %u %t \"%r\" %>s %b" common LogFormat "%{Referer}i -> %U" referer LogFormat "%{User-agent}i" agent CustomLog logs/access_log combined ServerSignature Off AddIconByEncoding (CMP,/icons/compressed.gif) x-compress x-gzip AddIconByType (TXT,/icons/text.gif) text/* AddIconByType (IMG,/icons/image2.gif) image/* AddIconByType (SND,/icons/sound2.gif) audio/* AddIconByType (VID,/icons/movie.gif) video/* AddIcon /icons/binary.gif .bin .exe AddIcon /icons/binhex.gif .hqx AddIcon /icons/tar.gif .tar AddIcon /icons/world2.gif .wrl .wrl.gz .vrml .vrm .iv AddIcon /icons/compressed.gif .Z .z .tgz .gz .zip AddIcon /icons/a.gif .ps .ai .eps AddIcon /icons/layout.gif .html .shtml .htm .pdf AddIcon /icons/text.gif .txt AddIcon /icons/c.gif .c AddIcon /icons/p.gif .pl .py AddIcon /icons/f.gif .for AddIcon /icons/dvi.gif .dvi AddIcon /icons/uuencoded.gif .uu AddIcon /icons/script.gif .conf .sh .shar .csh .ksh .tcl AddIcon /icons/tex.gif .tex AddIcon /icons/bomb.gif core AddIcon /icons/back.gif .. AddIcon /icons/hand.right.gif README AddIcon /icons/folder.gif ^^DIRECTORY^^ AddIcon /icons/blank.gif ^^BLANKICON^^ DefaultIcon /icons/unknown.gif ReadmeName README.html HeaderName HEADER.html IndexIgnore .??* *~ *# HEADER* README* RCS CVS *,v *,t AddEncoding x-compress Z AddEncoding x-gzip gz tgz AddLanguage da .dk AddLanguage nl .nl AddLanguage en .en AddLanguage et .et AddLanguage fr .fr AddLanguage de .de AddLanguage he .he AddLanguage el .el AddLanguage it .it AddLanguage ja .ja AddLanguage pl .po AddLanguage ko .ko AddLanguage pt .pt AddLanguage nn .nn AddLanguage no .no AddLanguage pt-br .pt-br AddLanguage ltz .ltz AddLanguage ca .ca AddLanguage es .es AddLanguage sv .sv AddLanguage cs .cz .cs AddLanguage ru .ru AddLanguage zh-CN .zh-cn AddLanguage zh-TW .zh-tw AddLanguage hr .hr LanguagePriority en da nl et fr de el it ja ko no pl pt pt-br ltz ca es sv tw ForceLanguagePriority Prefer Fallback AddDefaultCharset UTF-8 AddCharset ISO-8859-1 .iso8859-1 .latin1 AddCharset ISO-8859-2 .iso8859-2 .latin2 .cen AddCharset ISO-8859-3 .iso8859-3 .latin3 AddCharset ISO-8859-4 .iso8859-4 .latin4 AddCharset ISO-8859-5 .iso8859-5 .latin5 .cyr .iso-ru AddCharset ISO-8859-6 .iso8859-6 .latin6 .arb AddCharset ISO-8859-7 .iso8859-7 .latin7 .grk AddCharset ISO-8859-8 .iso8859-8 .latin8 .heb AddCharset ISO-8859-9 .iso8859-9 .latin9 .trk AddCharset ISO-2022-JP .iso2022-jp .jis AddCharset ISO-2022-KR .iso2022-kr .kis AddCharset ISO-2022-CN .iso2022-cn .cis AddCharset Big5 .Big5 .big5 # For russian, more than one charset is used (depends on client, mostly): AddCharset WINDOWS-1251 .cp-1251 .win-1251 AddCharset CP866 .cp866 AddCharset KOI8-r .koi8-r .koi8-ru AddCharset KOI8-ru .koi8-uk .ua AddCharset ISO-10646-UCS-2 .ucs2 AddCharset ISO-10646-UCS-4 .ucs4 AddCharset UTF-8 .utf8 AddCharset GB2312 .gb2312 .gb AddCharset utf-7 .utf7 AddCharset utf-8 .utf8 AddCharset big5 .big5 .b5 AddCharset EUC-TW .euc-tw AddCharset EUC-JP .euc-jp AddCharset EUC-KR .euc-kr AddCharset shift_jis .sjis AddType application/x-tar .tgz AddHandler imap-file map AddHandler type-map var AddOutputFilter INCLUDES .shtml Alias /error/ "/var/www/error/" <IfModule mod_negotiation.c> <IfModule mod_include.c> <Directory "/var/www/error"> AllowOverride None Options IncludesNoExec AddOutputFilter Includes html AddHandler type-map var Order allow,deny Allow from all LanguagePriority en es de fr ForceLanguagePriority Prefer Fallback </Directory> </IfModule> </IfModule> BrowserMatch "Mozilla/2" nokeepalive BrowserMatch "MSIE 4\.0b2;" nokeepalive downgrade-1.0 force-response-1.0 BrowserMatch "RealPlayer 4\.0" force-response-1.0 BrowserMatch "Java/1\.0" force-response-1.0 BrowserMatch "JDK/1\.0" force-response-1.0 BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully BrowserMatch "^WebDrive" redirect-carefully BrowserMatch "^WebDAVFS/1.[012]" redirect-carefully BrowserMatch "^gnome-vfs" redirect-carefully <VirtualHost *:443> ServerName rhino SSLEngine on SSLCertificateFile /etc/httpd/conf/verisign/rhino.crt SSLCertificateKeyFile /etc/httpd/conf/verisign/rhino.key ProxyRequests Off ProxyPreserveHost On ProxyPass / http://localhost:18080/ ProxyPassReverse / http://localhost:18080/ </VirtualHost> ------------------- Any assistance you can provide is, as always, much appreciated. Kind Regards Trevor --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: [EMAIL PROTECTED] " from the digest: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
