-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Mark,
On 6/27/20 05:29, Mark Thomas wrote: > On 27/06/2020 10:19, Thomas Meyer wrote: >> Hi, >> >> A few questions regarding tomcat session replication: > > load-balancing and session replication are two separate parts of > an overall clustering solution. > >> 1) is the jvmRoute attribute on Engine object necessary for >> session replication to work correctly? > > No, but if you don't use it it places a number of restrictions on > the web application behaviour and on the configuration of session > replication. > > The limitations are: - you need to use the DeltaManager (which > doesn't scale as well as the BackupManager); - any requests made by > the client that depend on the session MUST be issued in series, not > in parallel; and This is only true of requests that would modify the session-state in a way that needed to be deterministic, right? A bunch of GET requests that don't change the session ought to be okay in parallel (as long as any prior state-changing requests have completed _ those changes replicated). > - the session Manager must be configured to update all the other > nodes in the cluster BEFORE the current request returns to the > client. Same (negative) caveat here, right? >> 2) does session replication only work correctly with sticky load >> balancer routing? > > No. It works quite happily without it. > >> >> My setup is 1) load balancer without sticky session routing into >> kubernetes 2) two pods running tomcat with cloud member provider, >> which see and find each other >> >> No jvmRoute attribute is set. >> >> Above setup doesn't work and give strange errors for the >> distributed webapp which relies on http sessions. >> >> Should above setup work? If not why and what do I need to fix? >> >> Any hints of what logging to enable to debug the problem if any >> at all? > > Please show us how you have configured the session manager and > clustering. - -chris -----BEGIN PGP SIGNATURE----- Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/ iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAl76UgcACgkQHPApP6U8 pFjoNQ//TbmZA3oh1ISz3ogBK9Txb/VH1qXnJ8+Y/uP0sjK45p88vd+hoqfAyQ98 8faqgN5/IuuYCnGPYlySGDfF2b2rfXL2umq5P62rjYnDBEsWulIix4dYxNLDqZF6 GeK7lKGXABAM+gJXxbyXELEwjnppP2qCYE+gSTzwJH3Jnz4UMj2oT9bjZjBp1jOy 7CaXY0VYnVqLZhbHwTmUC4A1eIQrzN+4Cag3FVoWE2oLUpi1/GK6iYmDJpy2owA/ 1kirT89sMqehaoTS02EnBfSusX9DN0qDmUK0ddxtv8jUiEz408+ujs5YPRuVG71z 5ISuymx9Sf8e9RA+TFNm252PIJWKtumi9uddG0As/FF4Qy+LMmY94RX+aXyBcQU9 r0A1nkX8/UmjqaUx61um2/t2PDfTBCDwl0ORat4ERHHc0vfQLYnvPYLZzKj/jNn6 guflkExS5qpwbiuvWFgvFiFTAi9Og5tF2ks+sqdb3PWoie2snStGKboivQKof4qb 7BStuSWVP1aeUieGn7fqCWhLlr9VSC0r2czEShkVde4TWC/cV5F38NfSGmbYssrQ 97zjbup6+/fL5MKmOaoDY2kOS1/XPzrB/BDK+d83w98cb03txezZCwtM2QPzn/48 1QvL3n3XMna31XHa8ljHldrX2c7bm2lpkhJPL5269pFznMRZOA4= =Lg+P -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
