To avoid those kind of problems, I would recommend putting one "mongos" instance for each OpenSIPS machine, on the same box. This way, not only do you avoid problems with the mongos machine going down, but you'll speed up query times as well, making your OpenSIPS workers more responsive!

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

On 07.06.2016 13:20, Sasmita Panda wrote:
Hi Liviu ,

I just have one question . I have implemented opensips with mongodb shard cluster . I have one replica set with three member . I have three config server for each and mongos service running .

What I wanted to know is , the server in which my mongos service is running , If that machine is get down what will happen ?
I need to monitor that machine so that it wont go down ? Is this show ?

*/Thanks & Regards/*
/Sasmita Panda/
/Network Testing and Software Engineer/
/3CLogic , ph:07827611765/

On Mon, Jun 6, 2016 at 4:41 PM, Liviu Chircu <[email protected] <mailto:[email protected]>> wrote:

    Thank you, Sasmita! Will reply here as soon as there is progress
    on the matter.

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

    On 06.06.2016 13:55, Sasmita Panda wrote:
    Hi ,

     I have created an issue with detailed steps . Bellow is the
    issue ID . Let me know if the issue will get fixed .

    https://github.com/OpenSIPS/opensips/issues/895

    Thanks

    */Thanks & Regards/*
    /Sasmita Panda/
    /Network Testing and Software Engineer/
    /3CLogic , ph:07827611765/

    On Mon, Jun 6, 2016 at 3:32 PM, Sasmita Panda <[email protected]
    <mailto:[email protected]>> wrote:

        Thank you so much for the information . Let me try to deploy
        with mongos server .

        I will post the detailed steps for opensips crash as soon as
        I will be free .

        */Thanks & Regards/*
        /Sasmita Panda/
        /Network Testing and Software Engineer/
        /3CLogic , ph:07827611765/

        On Mon, Jun 6, 2016 at 2:14 PM, Liviu Chircu
        <[email protected] <mailto:[email protected]>> wrote:

            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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