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Failing over Nodes

    Nodes are failed over via hard failover via the POST /controller/failOver HTTP method and URI.

    HTTP method and URI

    Failing over a node indicates that the node is no longer available in a cluster and replicated data on another node should be made available to clients. This endpoint along with the otpNode parameter (internal node name) fails over a specific node.

    POST /controller/failOver


    HTTP request syntax:

    POST /controller/failOver HTTP/1.1
    Authorization: Basic

    Curl request syntax:

    curl -v -X POST
    -u admin:password http://localhost:port/controller/failOver -d otpNode=[node@hostname]


    The following examples fails over server node from a cluster with the local host,

    curl -v -X POST \
      -u Administrator:password \
      -d 'otpNode=ns_2@'

    Response codes

    Response codes Description




    Bad Request JSON: The RAM Quota value is too small.



    The following example is a successful response:

    HTTP/1.1 200 OK

    The following example is an unsuccessful response, for example, if the node does not exist in the cluster.

    HTTP/1.1 400