[Backlogmanager] [FIWARE-JIRA] (HELP-14048) [fiware-stackoverflow] Cygnus and mongodb: Authentication failed

[Andres Muñoz (JIRA)]

     [ https://jira.fiware.org/browse/HELP-14048?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andres Muñoz resolved HELP-14048.
---------------------------------
    Resolution: Done

> [fiware-stackoverflow] Cygnus and mongodb: Authentication failed
> ----------------------------------------------------------------
>
>                 Key: HELP-14048
>                 URL: https://jira.fiware.org/browse/HELP-14048
>             Project: Help-Desk
>          Issue Type: Monitor
>          Components: FIWARE-TECH-HELP
>            Reporter: Backlog Manager
>            Assignee: Andres Muñoz
>              Labels: docker, fiware, fiware-cygnus, mongodb
>
> Created question in FIWARE Q/A platform on 26-04-2018 at 17:04
> {color: red}Please, ANSWER this question AT{color} https://stackoverflow.com/questions/50046646/cygnus-and-mongodb-authentication-failed
> +Question:+
> Cygnus and mongodb: Authentication failed
> +Description:+
> I'm trying to use cygnus and mongdb with docker.
> My docker-compose:
> cygnus:
>     image: fiware/cygnus-ngsi:1.7.1
>     hostname: cygnus
>     container_name: cygnus
>     volumes:
>       - ./config/cygnus/agent.conf:/opt/apache-flume/conf/agent.conf
>     links:
>       - mysql-cygnus:mysql-cygnus
>     external_links:
>       - mongodb:mongodb
>     expose:
>       - "5050"
>     ports:
>       - "5050:5050"
>     environment:
>       - CYGNUS_MONGO_HOSTS=mongodb:27017
>       - CYGNUS_MONGO_USER=cygnus
>       - CYGNUS_MONGO_PASS=f10t_Mongo
>       - CYGNUS_LOG_LEVEL=INFO
> ...
> mongodb:
>     image: mongo:3.4.7
>     hostname: mongodb
>     image: aashreys/mongo-auth:latest
>     expose: 
>       - "27017"
>     ports:
>       - "27017:27017"
>     environment:
>       - AUTH=yes
>       - MONGODB_ADMIN_USER=admin_cygnus
>       - MONGODB_ADMIN_PASS=admin_cygnus 
>     expose:
>       - "27017"
>     ports:
>       - "27017:27017"
> My agent.conf
> cygnus-ngsi.sinks.mongo-sink.mongo_hosts = mongodb:27017
> cygnus-ngsi.sinks.mongo-sink.mongo_username = cygnus
> cygnus-ngsi.sinks.mongo-sink.mongo_password = f10t_Mongo
> But I got in cygnus log:
> msg=com.telefonica.iot.cygnus.sinks.NGSISink[533] : Persistence error.     
> Message: -, Timed out after 30000 ms while waiting for a server that matches PrimaryServerSelector. 
> Client view of cluster state is {type=UNKNOWN, servers=[{address=mongodb:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSecurityException: Exception authenticating MongoCredential{mechanism=null, userName='cygnus', source='cygnus_imd', password=<hidden>, mechanismProperties={}}}, caused by {com.mongodb.MongoCommandException:
> Command failed with error 18: 'Authentication failed.' on server mongodb:27017. The full response is { "ok" : 0.0, "errmsg" : "Authentication failed.", "code" : 18, "codeName" : "AuthenticationFailed" }}}]
> and mongo log:
> 2018-04-25T20:59:19.684+0000 I ACCESS   [conn136] SCRAM-SHA-1 authentication failed for cygnus on cygnus_imd from client 172.18.0.4:37250 ; UserNotFound: Could not find user cygnus at cygnus_imd
> I resolved the problem creating the user inside the database cygnus_imd:
> use cygnus_imd
> db.createUser(
>    {
>      user: "cygnus",
>      pwd: "f10t_Mongo",
>      roles: [ "readWrite", "dbAdmin" ]
>    }
> );
> But I don't think that is a good solution, because I can't create a user for each dataset of my cygnus, it should be done automatically. I think that the authentication doesn't work with a database empty. But at the begin, all databases are empties. So I don't know how fix it.



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