Re: multiple apache instances load balancing tomcat
Pete, For redundancy in apache the following options are open to you : 1) Use a http sprayer in front of the apache webservers 2) Use a load balancing software such as Stonebeat Webcluster 3) Manual failover. This is where you have two instances of apache configured and running using the same ip, but only have one of the up. When your primary node fails down its interface and up the secondary. John Hi. I've finally got Apache load balancing with Tomcat, but want to provide redundancy to the Apache instance, is there a way to do this so if one goes down the second one takes over seamlessly / works concurrently ? Thanks, Pete. *** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. *** For any information on the Quinn Group of Companies please visit :- http://www.quinn-group.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: multiple apache instances load balancing tomcat
Pete, Unfortuantly I haven't come accross memory-memory replication between two apaches as I've always run them on seperate machines and took the hit on the loss of sessions, better to loose a session than a service. John Hi John. Investigating cost of point 2. For point 3, I'd assume that all users would then lose their sessions? I'd be after sticky sessions, so I guess I'd need memory-memory replication between the two apache's, is this possible? Tx. Pete. [EMAIL PROTECTED] wrote: Pete, For redundancy in apache the following options are open to you : 1) Use a http sprayer in front of the apache webservers 2) Use a load balancing software such as Stonebeat Webcluster 3) Manual failover. This is where you have two instances of apache configured and running using the same ip, but only have one of the up. When your primary node fails down its interface and up the secondary. John Hi. I've finally got Apache load balancing with Tomcat, but want to provide redundancy to the Apache instance, is there a way to do this so if one goes down the second one takes over seamlessly / works concurrently ? Thanks, Pete. *** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. *** For any information on the Quinn Group of Companies please visit :- http://www.quinn-group.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] *** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. *** For any information on the Quinn Group of Companies please visit :- http://www.quinn-group.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat / Apache / SSl
Software: Apache - 2.0.48 Tomcat - 4.1.29 OpenSSL - 0.9.6l [engine] 04 Nov 2003 Hi, I am trying to encrypt all data being transmitted from the client pc to the webserver, and also from the webserver to tomcat. I have only been working on tomcat for a couple of months but have experience on WebSphere. I have enabled ssl on both apache and on tomcat, and both are accessible directly: apache: https://host tomcat: https://host:8443 When I try set up a connector from apache to tomcat using port 8443 i get an Internal Server Error and the follwoing errors in the mod_jk log: [jk_ajp_common.c (661)]: In jk_endpoint_t::ajp_connect_to_endpoint, connected sd = 16 [jk_ajp_common.c (693)]: sending to ajp13 #358 [jk_ajp_common.c (966)]: ajp_send_request 2: request body to send 0 - request body to resend 0 [jk_ajp_common.c (755)]: ajp_connection_tcp_get_message: Error - Wrong message format 0x1503 [jk_ajp_common.c (1137)]: Error reading reply from tomcat. Tomcat is down or network problems. [jk_ajp_common.c (1290)]: ERROR: Receiving from tomcat failed, recoverable operation. err=2 [jk_ajp_common.c (1309)]: sending request to tomcat failed in send loop. err=2 [jk_ajp_common.c (1318)]: Error connecting to tomcat. Tomcat is probably not started or is listening on the wrong port. Failed errno = 0 [jk_ajp_common.c (1529)]: Into jk_endpoint_t::done, closing connection 0 [jk_ajp_common.c (605)]: In jk_endpoint_t::ajp_close_endpoint Apache to Tomcat using the ajp13 connector over port 8009 works fine but I have a requirement to encrypt all data. Any ideas? Thanks, John Configs: --- Tomcat configs ## server.xml ... Connector className=org.apache.coyote.tomcat4.CoyoteConnector port=8443 minProcessors=5 maxProcessors=75 enableLookups=true acceptCount=100 debug=0 scheme=https secure=true useURIValidationHack=false disableUploadTimeout=true Factory className=org.apache.coyote.tomcat4.CoyoteServerSocketFactory clientAuth=true protocol=TLS / /Connector ... ## workers.properties workers.tomcat_home=/usr/jakarta-tomcat-4.1.29/ workers.java_home=/usr/java/j2sdk1.4.1_03/bin/java ps=/ worker.list=bob worker.loadbalancer.type=lb worker.loadbalancer.balanced_workers=bob worker.bob.port=8443 worker.bob.host=10.0.0.10 worker.bob.type=ajp13 worker.bob.lbfactor=1 --- Apache configs ## httpd.conf ... LoadModule jk_module modules/mod_jk.so JkWorkersFile /usr/jakarta-tomcat-4.1.29/conf/workers.properties JkLogFile /usr/httpd-2.0.48/logs/mod_jk-log JkLogLevel debug JkMount / bob JkMount /* bob ... - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
