hadoop - ibm - bluemix - node-red - 应用程序未运行，我无法添加分析服务

Question

我正在遵循下面给出的简单教程：无需编写任何代码即可收集和分析社交数据

根据链接，应添加 node-red 应用程序。但添加后状态显示为"Your app status is unknown"。如果我忽略这一点error并继续添加“IBM Analytics for Hadoop” - 该应用程序不会出现在选择中，即我也无法创建服务。

你能告诉我……我应该怎么做才能解决它。

Answer 1

Satish，
尝试使用 Analytics for Apache Hadoop 服务。HDFS 节点的最新修复程序应该会有所帮助。我附上 Node-RED 源代码供您参考。

[
{
    "id": "19e3fecb.c535b9",
    "type": "inject",
    "name": "",
    "topic": "",
    "payload": "",
    "payloadType": "date",
    "repeat": "",
    "crontab": "",
    "once": false,
    "x": 311,
    "y": 109,
    "z": "d2f1fb2c.6dc9f",
    "wires": [
        [
            "e260889a.2a8a3"
        ]
    ]
},
{
    "id": "997c2459.ada828",
    "type": "ibm hdfs",
    "name": "",
    "filename": "/welcome.txt",
    "appendNewline": false,
    "overwriteFile": true,
    "x": 660,
    "y": 112,
    "z": "d2f1fb2c.6dc9f",
    "wires": []
},
{
    "id": "e260889a.2a8a3",
    "type": "function",
    "name": "",
    "func": "msg.payload = {\"d\":{\"voltage\":240}};\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "x": 464,
    "y": 122,
    "z": "d2f1fb2c.6dc9f",
    "wires": [
        [
            "997c2459.ada828"
        ]
    ]
},
{
    "id": "f18b36e9.11256",
    "type": "inject",
    "name": "",
    "topic": "",
    "payload": "",
    "payloadType": "date",
    "repeat": "",
    "crontab": "",
    "once": false,
    "x": 322,
    "y": 194.9999771118164,
    "z": "d2f1fb2c.6dc9f",
    "wires": [
        [
            "ea15a346.645838"
        ]
    ]
},
{
    "id": "3cf35d10.b5b02a",
    "type": "ibm hdfs in",
    "name": "",
    "filename": "/welcome.txt",
    "format": "utf8",
    "x": 670,
    "y": 205.9999771118164,
    "z": "d2f1fb2c.6dc9f",
    "wires": [
        [
            "8c4333f4.7545b"
        ]
    ]
},
{
    "id": "8c4333f4.7545b",
    "type": "debug",
    "name": "",
    "active": true,
    "console": "false",
    "complete": "payload",
    "x": 871,
    "y": 201.9999771118164,
    "z": "d2f1fb2c.6dc9f",
    "wires": []
},
{
    "id": "ea15a346.645838",
    "type": "function",
    "name": "",
    "func": "msg.filename = \"/welcome.txt\";\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "x": 479,
    "y": 203.9999771118164,
    "z": "d2f1fb2c.6dc9f",
    "wires": [
        [
            "3cf35d10.b5b02a"
        ]
    ]
},
{
    "id": "1ba399e.a2a5ae6",
    "type": "inject",
    "name": "",
    "topic": "",
    "payload": "",
    "payloadType": "date",
    "repeat": "",
    "crontab": "",
    "once": false,
    "x": 326,
    "y": 368.9999771118164,
    "z": "d2f1fb2c.6dc9f",
    "wires": [
        [
            "4d84ea75.52b5bc"
        ]
    ]
},
{
    "id": "4d84ea75.52b5bc",
    "type": "function",
    "name": "",
    "func": "msg.delete = true;\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "x": 500,
    "y": 373.00000762939453,
    "z": "d2f1fb2c.6dc9f",
    "wires": [
        [
            "e9c07b8e.d458f"
        ]
    ]
},
{
    "id": "e9c07b8e.d458f",
    "type": "ibm hdfs",
    "name": "",
    "filename": "/welcome.txt",
    "appendNewline": true,
    "overwriteFile": false,
    "x": 693,
    "y": 368.9999771118164,
    "z": "d2f1fb2c.6dc9f",
    "wires": []
},
{
    "id": "dd7bf27a.2a122",
    "type": "comment",
    "name": "Create",
    "info": "",
    "x": 171.00001525878906,
    "y": 108.99999237060547,
    "z": "d2f1fb2c.6dc9f",
    "wires": []
},
{
    "id": "e384dc30.7d9188",
    "type": "comment",
    "name": "Read",
    "info": "",
    "x": 177.00001525878906,
    "y": 196.99999237060547,
    "z": "d2f1fb2c.6dc9f",
    "wires": []
},
{
    "id": "c082c1.4e78054",
    "type": "comment",
    "name": "Delete",
    "info": "",
    "x": 171.00001525878906,
    "y": 365.9999771118164,
    "z": "d2f1fb2c.6dc9f",
    "wires": []
},
{
    "id": "fd160f73.d01508",
    "type": "inject",
    "name": "",
    "topic": "",
    "payload": "",
    "payloadType": "date",
    "repeat": "",
    "crontab": "",
    "once": false,
    "x": 319.00001525878906,
    "y": 280.00000762939453,
    "z": "d2f1fb2c.6dc9f",
    "wires": [
        [
            "215a640f.5b3a64"
        ]
    ]
},
{
    "id": "3362cea6.d2a8a2",
    "type": "ibm hdfs",
    "name": "",
    "filename": "/welcome.txt",
    "appendNewline": true,
    "overwriteFile": false,
    "x": 668.0000152587891,
    "y": 283.00000762939453,
    "z": "d2f1fb2c.6dc9f",
    "wires": []
},
{
    "id": "215a640f.5b3a64",
    "type": "function",
    "name": "",
    "func": "msg.payload = {\"d\":{\"voltage\":240}};\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "x": 472.00001525878906,
    "y": 293.00000762939453,
    "z": "d2f1fb2c.6dc9f",
    "wires": [
        [
            "3362cea6.d2a8a2"
        ]
    ]
},
{
    "id": "4ccf2efd.fa95e8",
    "type": "comment",
    "name": "Update",
    "info": "Update",
    "x": 179.00003051757812,
    "y": 280,
    "z": "d2f1fb2c.6dc9f",
    "wires": []
}]   

在部署流程之前绑定/添加服务。

感谢和问候
Amit M Mangalvedkar

Answer 2

萨蒂什，

从 Node-RED Starter 样板进行部署似乎存在问题。我刚刚尝试过，也失败了，当我检查日志时，我发现有人需要调查一个错误，所以我在几分钟前为此开了一张票。

无论如何，即使部署成功，您也无法完成本教程：因为 Romeo 编写了它，所以 Analytics for Hadoop 服务已经升级。教程的一部分不再正确，最后我检查了 Bluemix 上 Node-RED 中的 HDFS 节点存在问题，因为它无法再连接到 Hadoop。

问候，哈拉尔

Answer 3

萨蒂什，

对于您看到的问题，似乎添加/删除服务可能会导致问题。当服务发生变化时，有时 bluemix-settings.js 无法正确同步，您需要下载源代码、更新它并将您的应用程序重新推送。如果您刚刚开始创建应用程序，我建议您从头开始删除样板，然后创建新应用程序。这将清除任何问题。

这是一个更简单的示例，它无需一行代码即可分析 twitter 数据，并且除了创建 node-RED 样板时添加的服务之外，不需要添加任何服务：链接到 Developer Works Article。