RE: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server
Hola, Is this possible to do? I've configured load balancing with apache and that worked as desired, but since then I've determined that the apache server was unnecessary in my configuration. If it is possible, can you please provide a sample jk2.properties file, or at least step me in the right direction. How did you determine Apache is not necessary when you're load-balancing with mod_jk2 which requires Apache? ;) Yoav Shapira This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server
I think (hope) he means one apache httpd instance load balancing to several tomcat instances. Your guess as to what he means is as good as mine tho! 8o) Adam. -Original Message- From: Shapira, Yoav [mailto:[EMAIL PROTECTED] Sent: 26 March 2004 16:36 To: Tomcat Users List Subject: RE: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server Hola, Is this possible to do? I've configured load balancing with apache and that worked as desired, but since then I've determined that the apache server was unnecessary in my configuration. If it is possible, can you please provide a sample jk2.properties file, or at least step me in the right direction. How did you determine Apache is not necessary when you're load-balancing with mod_jk2 which requires Apache? ;) Yoav Shapira This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] _ This email and any files attached is intended for the addressee only and may contain information that is confidential and/or legally privileged. Unauthorised use is strictly prohibited and may be unlawful. If you are not the addressee, you should not read, copy, disclose or otherwise use this message, including any attachment, except for the purpose of delivery to the addressee. We make every effort to keep our network free from viruses. However, you do need to verify this e-mail and any attachments to it to be virus free as we can take no responsibility for any computer virus which might be transferred by way of this e-mail. Scanning of this message and addition of this footer is performed by SurfControl E-mail Filter software in conjunction with virus detection software. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server
I've misphrased. What documentation I've come across indicates that Apache (or IIS) is necessary to configure tomcat as a cluster. It very well may be possible, which is why I'm asking the list. The main feature that I'm looking for in this configuration is the session failover ability. I have a hardware load-balancer, so load-balancing is not exactly what I was looking for...just the session sharing. _ Jeremy Nix Senior Application Developer Southwest Financial Services, LTD. (513) 621-6699 x1158 www.sfsltd.com -Original Message- From: Shapira, Yoav [mailto:[EMAIL PROTECTED] Sent: Friday, March 26, 2004 11:36 AM To: Tomcat Users List Subject: RE: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server Hola, Is this possible to do? I've configured load balancing with apache and that worked as desired, but since then I've determined that the apache server was unnecessary in my configuration. If it is possible, can you please provide a sample jk2.properties file, or at least step me in the right direction. How did you determine Apache is not necessary when you're load-balancing with mod_jk2 which requires Apache? ;) Yoav Shapira This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - 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: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server
Hi, One alternative to balancing traffic without Apache, using only a tomcat cluster, is to use the balancer webapp that ships with tomcat 5. It's not a load balancer in the strict sense of the definition, as it doesn't replicate anything or allow for sticky sessions, but defacto it works. Yoav Shapira Millennium Research Informatics -Original Message- From: Adam Fowler [mailto:[EMAIL PROTECTED] Sent: Friday, March 26, 2004 11:40 AM To: 'Tomcat Users List' Subject: RE: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server I think (hope) he means one apache httpd instance load balancing to several tomcat instances. Your guess as to what he means is as good as mine tho! 8o) Adam. -Original Message- From: Shapira, Yoav [mailto:[EMAIL PROTECTED] Sent: 26 March 2004 16:36 To: Tomcat Users List Subject: RE: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server Hola, Is this possible to do? I've configured load balancing with apache and that worked as desired, but since then I've determined that the apache server was unnecessary in my configuration. If it is possible, can you please provide a sample jk2.properties file, or at least step me in the right direction. How did you determine Apache is not necessary when you're load-balancing with mod_jk2 which requires Apache? ;) Yoav Shapira This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] _ This email and any files attached is intended for the addressee only and may contain information that is confidential and/or legally privileged. Unauthorised use is strictly prohibited and may be unlawful. If you are not the addressee, you should not read, copy, disclose or otherwise use this message, including any attachment, except for the purpose of delivery to the addressee. We make every effort to keep our network free from viruses. However, you do need to verify this e-mail and any attachments to it to be virus free as we can take no responsibility for any computer virus which might be transferred by way of this e-mail. Scanning of this message and addition of this footer is performed by SurfControl E-mail Filter software in conjunction with virus detection software. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server
That doesn't exactly accomplish what I'm looking to do. Like I said, I need session replication amongst the tomcat instances...I guess theres always the idea of managing session data in some other medium (DB). _ Jeremy Nix Senior Application Developer Southwest Financial Services, LTD. (513) 621-6699 x1158 www.sfsltd.com -Original Message- From: Shapira, Yoav [mailto:[EMAIL PROTECTED] Sent: Friday, March 26, 2004 11:42 AM To: Tomcat Users List Subject: RE: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server Hi, One alternative to balancing traffic without Apache, using only a tomcat cluster, is to use the balancer webapp that ships with tomcat 5. It's not a load balancer in the strict sense of the definition, as it doesn't replicate anything or allow for sticky sessions, but defacto it works. Yoav Shapira Millennium Research Informatics -Original Message- From: Adam Fowler [mailto:[EMAIL PROTECTED] Sent: Friday, March 26, 2004 11:40 AM To: 'Tomcat Users List' Subject: RE: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server I think (hope) he means one apache httpd instance load balancing to several tomcat instances. Your guess as to what he means is as good as mine tho! 8o) Adam. -Original Message- From: Shapira, Yoav [mailto:[EMAIL PROTECTED] Sent: 26 March 2004 16:36 To: Tomcat Users List Subject: RE: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server Hola, Is this possible to do? I've configured load balancing with apache and that worked as desired, but since then I've determined that the apache server was unnecessary in my configuration. If it is possible, can you please provide a sample jk2.properties file, or at least step me in the right direction. How did you determine Apache is not necessary when you're load-balancing with mod_jk2 which requires Apache? ;) Yoav Shapira This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] _ This email and any files attached is intended for the addressee only and may contain information that is confidential and/or legally privileged. Unauthorised use is strictly prohibited and may be unlawful. If you are not the addressee, you should not read, copy, disclose or otherwise use this message, including any attachment, except for the purpose of delivery to the addressee. We make every effort to keep our network free from viruses. However, you do need to verify this e-mail and any attachments to it to be virus free as we can take no responsibility for any computer virus which might be transferred by way of this e-mail. Scanning of this message and addition of this footer is performed by SurfControl E-mail Filter software in conjunction with virus detection software. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - 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: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server
That doesn't exactly accomplish what I'm looking to do. Like I said, I need session replication amongst the tomcat instances...I guess theres always the idea of managing session data in some other medium (DB). Coincidentally, I just got that working -- but it required a full day of writing code to get around bugs in PersistentValve (I'm going to describe this soon). So unless you want to hack Tomcat, I would suggest avoiding session replication via DB right now (with coding changes it does seem to work great). - tony - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Session sharing/load balancing multiple tomcat instances W/O Apache Web Server
Jeremy Nix wrote: I've misphrased. What documentation I've come across indicates that Apache (or IIS) is necessary to configure tomcat as a cluster. It very well may be possible, which is why I'm asking the list. The main feature that I'm looking for in this configuration is the session failover ability. I have a hardware load-balancer, so load-balancing is not exactly what I was looking for...just the session sharing. Does your hardware load balancer support sticky sessions? If it does, you can use Tomcat's HTTP connector, and configure your balancer as if Tomcat were a web server (which it is, when you use that connector). If it doesn't I personally recommend getting one that does ;-) or using Apache + mod_jk / mod_jk2. Use the hardware balancer and 2 Apache for high availability. Other than that, there is in-memory or JDBC session clustering (uncomment two elements from your server.xml, and you are mostly done). That implies that objects stored in sessions need to be Serializable. Performance impact will depend on your webapp design, so YMMV. I only tried in-memory a few months ago, and performance dropped seriously, but it worked without problem. Most likely our webapp's fault. You may encounter issues with frames and similar constructs. See the docs. HTH, Antonio Fiol - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
