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kandi_ak Member since 2017 12 posts
ME Bank
Posted: March 1, 2018
Last activity: March 25, 2018
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Mongo - High availability options

In chat config we are defining a single instance for mongo, and while starting of mongo servers we are mentioning a slave to be linked with mongo master.

Let’s say if master is down (which is defined in chat config)

  • Will the chat app be running on slave automatically or do we need to manually change the config on chat app?
  • How does chat app know about the slave that is configured on the mongo app end?
  • We have tried with adding replica sets for automatic failover, but that din't work because when master/defined instance of mongo is down, chat app has no idea to look for child instance of mongo.

Thanks for your response!

***Edited by Moderator Marissa to update categories***

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Accepted Solution
Posted: 2 years ago

Hi Anjan,


you can use below configuration in config.json to support mongodb replicaset. This is available from chat 7.22.6 and above.



"mongodb" : {  
      "replicaset": {  
        "user"    : "user",  
        "password" : "password",  
        "name":"mo1",  
        "db"  : "firefly",  
        "replicas": [{"host":"localhost","port":27017}, {"host":"localhost","port":27018}]  
      }  
    }


Thanks,


Srikanth
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