[OpenSIPS-Users] Opensips -1.11 crash with mongodb replica set .

[Liviu Chircu]

Hi Sasmita!

We have some plans to do some more testing on the module, including your 
"connect directly to replica set" usage case, and also bringing it up to 
date with the latest mongo driver. However, it is hard to give you an 
estimation for when this work will start.

Currently, the fastest way to fix your problems is for you to set up a 
"mongos" instance, along with 3 config server instances (these are 
needed by mongos, and ensure proper write consistency), and configure 
"cachedb_mongodb" to use this new "mongos" node.

A mongos instance is aware of all the replica sets (aka "shards"). In 
your case, it will initially shard the keys to your single replica set - 
thus, it will hold 100% of the data. As your data set grows, you may 
partition it over to additional replica sets, which you can configure 
into mongos without modifying anything on the OpenSIPS side. This way, 
failover within a replica set will also happen transparently, again, 
without impacting OpenSIPS at all.

PS: if you have a way to 100% reproduce a crash, please open a GH ticket 
describing the steps, and we'll go from there! [1]

[1]: https://github.com/OpenSIPS/opensips/issues

Liviu Chircu
OpenSIPS Developer
http://www.opensips-solutions.com

On 06.06.2016 11:23, Sasmita Panda wrote:
> Hi All ,
>
>        I am using opesips-1.11 with mongodb replica set . I have 3 
> members in the replica set , promary , secondary and arbitrary .
>
>       Problem 1 :  Sometime , If primay is not rechable , the 
> secondary becomes primary , But opensips loss connection from mongodb 
> . Its wont put any data in the data base . My call goes on but their 
> is not data in the mongodb database .
>
>         Problme 2: If the primay machine is down then secondary 
> becomes primary within some millisecond time  , but  opensips crashes 
> giving bellow error
>
>       ERROR:cachedb_mongodb:mongo_con_get: Failed to run query. Err = 
> 6, 0 , 0
>  CRITICAL:core:receive_fd: EOF on 10
>  INFO:core:handle_sigs: child process 5278 exited by a signal 11
>  INFO:core:handle_sigs: core was generated
>  INFO:core:handle_sigs: terminating due to SIGCHLD
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:sig_usr: signal 15 received
>  INFO:core:cleanup: cleanup
>  NOTICE:db_cachedb:destroy: destroy module db_cachedb ...
>  NOTICE:cachedb_mongodb:destroy: destroy module cachedb_mongodb ...
>
>      If my secondary mongodb machine is not reachable then rather 
> connection with db breaks for sometime but opensips wont crashes . But 
> in case of Primary opensips crashes with above error . Is this an 
> expected behavior or I am doing anything wrong .
>       Data loss can be bearable but application cant be . So please 
> let me know whats the problem .
>
> */Thanks & Regards/*
> /Sasmita Panda/
> /Network Testing and Software Engineer/
> /3CLogic , ph:07827611765/
>
>
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> Users at lists.opensips.org
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