Running the curl Command to Operate OpenTSDB

Writing Data

For example, to write data of a metric named testdata, whose timestamp is 1524900185, value is true, tag is key and value, run the following command:

curl -ki -X POST -d '{"metric":"testdata", "timestamp":1524900185, "value":"true", "tags":{"key":"value"}}' https://<tsd_ip>:4242/api/put?sync

<tsd_ip>: indicates the IP address of the TSD instance of OpenTSDB to which data is to be written.

HTTP/1.1 204 No Content
Content-Type: application/json; charset=UTF-8
Content-Length:0

Querying Data

For example, to query summary information about the testdata metric in the past three years, run the following command:

curl -ks https://<tsd_ip>:4242/api/query?start=3y-ago\&m=sum:testdata | python -m json.tool

• <tsd_ip>: indicates the IP address or host name of the TSD instance of OpenTSDB that needs to be accessed.
• <start=3y-ago\&m=sum:testdata>: Translates the & symbol, which may not be identified in the request.
• (Optional) <python -m json.tool>: Converts the response request to the JSON format.

[
    {
        "aggregateTags": [],
        "dps": {
            "1524900185": 1
        },
        "metric": "testdata",
        "tags": {
            "key": "value"
        }
    }
]

Querying tsd Status

For example, to query information about the client connected to HBase, run the following command:

curl -ks https://<tsd_ip>:4242/api/stats/region_clients | python -m json.tool

<tsd_ip>: indicates the IP address of the TSD instance of OpenTSDB that needs to be accessed.

[
    {
        "dead": false,
        "endpoint":"/xx.xx.xx.xx:16020",
        "inflightBreached": 0,
        "pendingBatchedRPCs": 0,
        "pendingBreached": 0,
        "pendingRPCs": 0,
        "rpcResponsesTimedout": 0,
        "rpcResponsesUnknown": 0,
        "rpcid": 78,
        "rpcsInFlight": 0,
        "rpcsSent": 79,
        "rpcsTimedout": 0,
        "writesBlocked": 0
    }
]