-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Scott,
This list is typically for non-paid support requests, but there really isn't a great forum for finding Tomcat consultants... other than Google I suppose. So I'm marking this Off-Topic and replying below. On 8/15/18 3:43 PM, Scott Evans wrote: > Our system is on Apache Tomcat Version 8.0.47. OS is Windows Server > 2012 R2 Datacenter. > > We are looking for someone that may be interested in paid contract > work to assist with troubleshooting and resolving a Tomcat > clustering issue in our system. > > The system is composed of multiple Java PrimeFaces applications > running in a clustered Tomcat environment which is experiencing > occasional deadlocking issues from an unknown source requiring the > Nodes to be cycled in order to resolve. The issue is only > occurring in our Production environment and we've determined that > the issues are occurring at random with the replication threads. Is it feasible to disable clustering (session replication) completely in your environment to determine whether the replication itself is the problem, or perhaps the problem is elsewhere? Disabling clustering should only degrade your service if (a) you aren't using session-stickiness (which pretty much everyone should be using) and (b) you expect a lot of fail-over and (c) it is unacceptable to have a failed-over user lose their session information. > We would need someone to help investigate our configuration and > determine if there are any further changes that can be made to our > system to catch these deadlock issues before they occur (requiring > a Node cycle). Can you post your cluster configuration from conf/server.xml, minus any secrets that may be in there? If all configs are the same on each node except for e.g. IP lists, feel free to just post a single one and mention that the IPs are different. It would be good to know how many nodes are clustered and the replication strategy (e.g. delta versus back). The strategy will be obvious from the configuration. You'll need to tell us the size of the cluster... and perhaps the deployment model such as "all servers in the same DC" or "50/50 split between primary DC and secondary DC", etc. > Please let me know if you or someone you know may be interested or > if you have further questions I can help answer. - -chris -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/ iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAlt0hSUACgkQHPApP6U8 pFiGPg/+PdAG+pVDfZzPWQRCBfjbaSQaRwum7LDNtBY+w5xQjfuS1t3UmST678ft RGaMRP5Qm/TYuMBI9mzdXrrRIAFaRI/3QAuuyB0jdzKqn18/6fldoJKHpwlzm27x SE1r5R4tD/lihC1lFWfXEMzOosO2uk7iBZWUv532zKL7TJ0lrLNgVdD5eakX9iVE dMpnYMbK9CtWHzQZ0LOYcHlXrnAYcr3OqYxZomHCpYsRjHEndfS8gsWqY1t/+gA0 xl0/Vz4lWXYhjmC/PVyN21LL21PA7MNFuywFmt7Xw4sxzgtHXorkOdJcTaqsoz+3 qqItb91vEQ4MvqjW949NApgV1bTaH/juEx8Z99fe9AEAireBCQ6q3qRdvWVzYNqP +WE0Ghxv5400h1VPYiYoDkFrJUnlPeVortqn1OldEVqoAfQGFW1Gt9wgpEK7Snfx EVGYG8alAwuvd5sFR9Ge6FcY8NTp+9/awbCwFAPmCCW6dlwdRmYhCRa8tJ9K6MZn PeeTPFXqBny1HS3BGR5owDn87Mv97eDxTNDfBjAxJP4u4DcMmtvSvM1Uk5QkkI4z A+rivKxqNw60qR96njWJOyi6A4Nk1OpTSN541snEAegnNm7ad9SMSot349mk80a9 culdRnzLlMCNdv0GwYpoCZBESOckFRQ2G+XrMNqnaCpNVTfCUyo= =cPO2 -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
