-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Giancarlo,
On 12/30/19 12:11, Giancarlo Celli wrote: > Hi Chris, to avoid any kind of overload, I would like every single > request to be forwarded to a backend server. Session stickiness only determines WHICH backend server your request will be routed to. If your session gets mapped to a server which has failed, that request will fail-over to another server. The advantage to sticky-sessions is two-fold: 1. When not clustering and user-sessions are required (i.e. for login), then sticky-sessions are REQUIRED 2. When clustering sessions, sticky-sessions are also REQUIRED to ensure that the same session object is being used for all requests, limiting the possibility of race-conditions. There is no cross-cluster synchronization to prevent simultaneous access to the same session on two different nodes. I can't really see a use-case for NOT using sticky-sessions unless you have HUGE, bursty-load and the contents of the session aren't very important. (Or you are using a non-standard session-manager.) > I attach the files again hoping you can view them correctly. I > await your suggestions. A few thoughts: > worker.node1.ping_mode=P This will cause a ping to be sent for every request, but no periodic checks will be made. It probably doesn't matter much, but you may want to start with ping_mode=A and reduce the frequency if you observe any performance problems. > worker.node1.ping_timeout=10000 10s is a long time. Do you want to wait 10s for a request to fail-over to another server? > worker.node1.lbfactor=1 worker.node1.socket_timeout=30 Same here: 30s is a long time. You may wait 30 seconds for a back-end server to fail to respond to a request. Or maybe you have some requests you expect to take as much as 30 seconds? > worker.node1.connection_pool_timeout=20 > worker.node1.recover_time=5 > <Connector port="80" protocol="HTTP/1.1" maxThreads="400" > connectionTimeout="20000" redirectPort="8443" /> Good: connectionTimeout == connection_pool_timeout Everything looks okay to me. Are you having any specific problems, or are you just asking if everything looks reasonable? - -chris > ------ Messaggio originale ------ Da: "Christopher Schultz" > <ch...@christopherschultz.net > <mailto:ch...@christopherschultz.net>> A: users@tomcat.apache.org > <mailto:users@tomcat.apache.org> Inviato: 27/12/2019 16:29:28 > Oggetto: Re: How to set apache load balancer for send request to 6 > tomcat server > >> Firma ha problemi -----BEGIN PGP SIGNED MESSAGE-----<br />Hash: >> SHA256<br /><br />Giancarlo,<br /><br />On 12/23/19 12:45, >> Giancarlo Celli wrote:<br />> Hi, I need to configure a load >> balancer with apache connector on a<br />> jelastic server >> that redirects requests to 6 server workers with<br />> tomcat >> 7 installed. Atteched you can find extract from httpd.conf<br >> />> and workers.properties. I need to send single request to >> tomcat<br />> server individually, so I set sticky_session to >> 0.<br /><br />So you want your clients to switch servers even >> when they don't have to?<br /><br />> Could you tell me if >> parameters are configured correctly? Is the<br />> collector >> able to handle all requests? Could you give me some<br />> >> further advice?<br />> <br />> Each tomcat server is >> configured with the following parameters:<br />> <br />> >> <Connector port="80" protocol="HTTP/1.1" maxThreads="400" <br >> />> connectionTimeout="20000" redirectPort="8443" /><br >> />> <br />> The balancer has the following configuration: >> Server version:<br />> Apache/2.4.39 (codeit) Server built: >> Apr 3 2019 18:54:14 <br />> Architecture: 64-bit Server MPM: >> event threaded: yes<br />> (fixed thread count) forked: yes >> (variable process count)<br /><br />Your attachments were >> stripped. Can you please post an example worker<br />and your >> JkMounts from httpd.conf? We don't need the whole httpd.conf.<br >> /><br />- -chris<br />-----BEGIN PGP SIGNATURE-----<br />Comment: >> Using GnuPG with Thunderbird - https://www.enigmail.net/<br >> /><br >> />iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAl4GI1cACgkQHPApP6U8<br >> >> />pFjHPhAAyDpqNcDm5AIe+QcsF/dB0rEfWSrfXY3DFZUjvJVTLfeqhUxS+gKNbHBf<br >> />iXhbxnXiFVMkHqgWxcMlrsQMGK5wWL00HCOrlijGbJYa52QCn2aLFJ6buf5kU+Cy<br >> >> />SAXOIBbpz4x12QEU6x2LJGAEXa8fMx96xyTXl0SAiWQqQ/EtVw/0y+b5h97Zpej5<br >> />kxR04IyOMDfqyEMVeKUVQNr46yZmscHE3r9Bo49mVqmLjD8a/tzHZybTuFVeW6xj<br >> >> />lILNuPwBL+cMz5ImqfW3qQUKyKLC6Bo9gdeamIXYg4z/66XwFmBUTP/mcTf0Up67<br >> />rbaJWgg8Si2exZhRJeB5z51hZiEXGWldkBljvwUjevZcjo9dEqvFCY7KtxdkuA/b<br >> >> />ZWAyxaTJkRvzusJrRItdV6m66q5aLUKehPTeIe5zm0V10Ttfc6qOpncfULQh0d1N<br >> />Ic719F1UKYOecqZXVqJJ+mDHhdMsulvWlV18if29riQe2mu+VUGlkjFYuxgm7TCp<br >> >> />zKGzdDAI3v/9b5lLtKYqCDaIFjH0MnBjGo+x9gTvpvQRIrdC4OGPTiw8W3Urveln<br >> />ZycUWihsb26vqaog7jJn6SLMJ/N8nVyw64Uc/slN3tCAIwHvzpu6dTVBEoXI6Jsx<br >> >> />29Nqyx6B1tSXrSYXDN0PO7PmpBffS7LDEd1luYXqAtcUilgsb4Q=<br />=KK92<br >> />-----END PGP SIGNATURE-----<br /> >> >> --------------------------------------------------------------------- >> >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> <mailto:users-unsubscr...@tomcat.apache.org> For additional >> commands, e-mail: users-h...@tomcat.apache.org >> <mailto:users-h...@tomcat.apache.org> >> > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > -----BEGIN PGP SIGNATURE----- Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/ iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAl4Lb5wACgkQHPApP6U8 pFiYBA/+KcOkhhrgwPM/cbRsl6wUEO3X6L1WAIYefjiT7OSDAnZs4na7C1ucpsOk 5Xpf7E7LE0tjujBTjOh3TQFSSMuKZq8otJSNJprVZDTWjQMFcTafO+pzcQ3ZDn0Q CXyCOYvbCbt1Rj0ODb9FsyQla5968tAM4gMpRz0p+C2D5RetJ1jG1OnAFoLXAC9R 5dC/Tkt7dk9juyZjGbnVzVG94EOVYCMzsu7F3Ax/JGtNoPhq1k05xt8jCTRIFJIL 2RrscIUmV3ODaZAO1F6inyvpRHY3XbDmN0Vs1s8gACCCY6536ib51JSR4g0Ll+9h lXx73DzNRNNktxa/CmpFaZS6q5Kz+u8MA7VOdtEnbkt2SJ8QPN+rQNrcFQJZEOI2 2tqb3wqPgUe9X2+5wbxVBXWdFaNMIbuz4yDWnRwVreKEClrwNWpOogJaIuza3k+s yUC2+oAAnmVI7T8pomiOokpkiheF5nVbPcb69CzKGAYRyE4kodBclkVSfx0Dtd3K 9ZnZ6owb3xOSAwGBu/HMq9vrOK5pOON8J/z4j8Y51CoukYC8xgIAh02r0n+a1gJ+ h2SLsUE5Klf8sCJ9kOKHxLXzN7yw5XJro/oFrco+BuB52lokRZX5nJUC9qcJVn7b Z3jcBEAwSheLu5y6KHr680feH8gAyqvneJ/Pvl+JHdlMLl5bIQg= =6bpX -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
