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  1. Help-Desk
  2. HELP-9279

[fiware-stackoverflow] Remote connection to fiware-cosmos returning authentication error

    Details

      Description

      Created question in FIWARE Q/A platform on 09-06-2015 at 08:06
      Please, ANSWER this question AT https://stackoverflow.com/questions/30724933/remote-connection-to-fiware-cosmos-returning-authentication-error

      Question:
      Remote connection to fiware-cosmos returning authentication error

      Description:
      We have a COSMOS account on cosmos.lab.fi-ware.org and can load files locally onto the cluster.

      However, we are having trouble loading remotely, the instructions we followed on the guide site show the following:

      However, using the WebHDFS/HttpFS RESTful API will allow you to upload
      files existing outside the global instance of Cosmos in FI-LAB. The
      following example uses HttpFS instead of WebHDFS (uses the TCP/14000
      port instead of TCP/50070), and curl is used as HTTP client (but your
      applications should implement your own HTTP client):

      [remote-vm]$ curl -i -X PUT "http://cosmos.lab.fi-ware.org:14000/webhdfs/v1/user/$COSMOS_USER/input_data?op=MKDIRS&user.name=$COSMOS_USER"
      [remote-vm]$ curl -i -X PUT ..etc
      [remote-vm]$ curl -i -X PUT -T etc..

      As you can see, the data uploading is a two-step operation, as stated
      in the WebHDFS specification: the first invocation of the API talks
      directly with the Head Node, specifying the new file creation and its
      name; then the Head Node sends a temporary redirection response,
      specifying the Data Node among all the existing ones in the cluster
      where the data has to be stored, which is the endpoint of the second
      step. Nevertheless, the HttpFS gateway implements the same API but its
      internal behaviour changes, making the redirection to point to the
      Head Node itself.

      However, when we run these commands we get server errors coming back, one example is:

      ~ kari$ -bash: user.name=kdempsey: command not found
      HTTP/1.1 100 Continue

      HTTP/1.1 401 Unauthorized
      Server: Apache-Coyote/1.1
      Set-Cookie: hadoop.auth=""; Expires=Thu, 01-Jan-1970 00:00:10 GMT; Path=/
      Content-Type: text/html;charset=utf-8
      Content-Length: 1275
      Date: Fri, 05 Jun 2015 12:58:20 GMT

      Apache Tomcat/6.0.32 - Error report<!--H1

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      BODY

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      B

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      P

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      A

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      A.name

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      HR

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      -->

      HTTP Status 401 - org.apache.hadoop.security.authentication.client.AuthenticationException: Anonymous requests are disallowed

      type Status report

      message org.apache.hadoop.security.authentication.client.AuthenticationException: Anonymous requests are disallowed

      description This request requires HTTP authentication (org.apache.hadoop.security.authentication.client.AuthenticationException: Anonymous requests are disallowed).

      Apache Tomcat/6.0.32

      Another was a 500 server error. Could please provide the commands for remotely loading a file into the COSMOS shared resource.

      Ultimately we want to take data from our InfluxDB and load into COSMOS, we would like to do it via REST call if possible (otherwise python).

      Many thanks,
      Kari

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        backlogmanager Backlog Manager added a comment -

        2017-05-28 03:05|CREATED monitor | # answers= 1, accepted answer= False

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        2017-05-28 06:05|UPDATED status: transition Answer| # answers= 1, accepted answer= False

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        backlogmanager Backlog Manager added a comment - 2017-05-28 06:05|UPDATED status: transition Answer| # answers= 1, accepted answer= False
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        2017-05-28 09:05|UPDATED status: transition Answered| # answers= 1, accepted answer= False

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        backlogmanager Backlog Manager added a comment - 2017-05-28 09:05|UPDATED status: transition Answered| # answers= 1, accepted answer= False

          People

          • Assignee:
            frb Francisco Romero
            Reporter:
            backlogmanager Backlog Manager
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              Updated:
              Resolved: