Created question in FIWARE Q/A platform on 25-05-2016 at 16:05
Please, ANSWER this question AT http://stackoverflow.com/questions/37439706/orion-iot-idas-has-reached-the-maximum-mongo-pool

Question:
Orion Iot/Idas has reached the maximum mongo pool

Description:
We are using Idas/Orion/Mongo(docker build) and Cygnus together in order to send data to Ckan and Cosmos.

We simulated 100 sensors that send data each 3 minutes, This approach stopped working after 2 days, I've checked both IDAS and Orion logs and see these Mongodb erros in the logs, there is not any notification coming both of the components no more.

Idas log:

failed time=2016-05-25T11:30:13,852.191UTC | lvl=ERROR | comp=iota:Manager | op=checkIndexes | file=[140414053451808:admin_service.cc:148] | msg=Check configuration, error in checkIndexes DBException can't connect couldn't connect to server 172.17.0.2:27017 (172.17.0.2), connection attempt failed
time=2016-05-25T11:30:13,853.966UTC | lvl=ERROR | comp=iota:Manager | op=conn | file=[140414053451808:mongo_connection.cc:254] | msg=It has reached the maximum mongo pool
time=2016-05-25T11:30:13,853.993UTC | lvl=ERROR | comp=iota:Manager | op=conn | file=[140414053451808:mongo_connection.cc:258] | msg=create a new con

Orion log:

time=2016-05-25T11:30:04.948UTC | lvl=INFO | trans=N/A | srv=N/A | subsrv=N/A | from=N/A | function=main | comp=Orion | msg=contextBroker.cpp[1719]: Orion Context Broker is running
time=2016-05-25T11:30:04.964UTC | lvl=ERROR | trans=N/A | srv=N/A | subsrv=N/A | from=N/A | function=mongoConnect | comp=Orion | msg=mongoConnectionPool.cpp[140]: Database Startup Error (cannot connect to mongo - doing 100 retries with a 1000 microsecond interval)
time=2016-05-25T11:30:05.969UTC | lvl=INFO | trans=N/A | srv=N/A | subsrv=N/A | from=N/A | function=mongoConnect | comp=Orion | msg=mongoConnectionPool.cpp[205]: Successful connection to database
time=2016-05-25T11:30:05.970UTC | lvl=INFO | trans=N/A | srv=N/A | subsrv=N/A | from=N/A | function=setWriteConcern | comp=Orion | msg=connectionOperations.cpp[681]: Database Operation Successful (setWriteConcern: 1)
time=2016-05-25T11:30:05.970UTC | lvl=INFO | trans=N/A | srv=N/A | subsrv=N/A | from=N/A | function=getWriteConcern | comp=Orion | msg=connectionOperations.cpp[724]: Database Operation Successful (getWriteConcern)

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Do you think that this is related with the number of data that is being sent to Idas? and mongodb stopped due to maximum connections exceeding?

thanks