Based on the stats from the show output it looks like all three alert nodes 
have produced at least some alerts. Does the directory /tmp/test exist? Is 
it writable by the kapacitord process? Are there any errors in the logs 
about not being able to write to the log files?



On Tuesday, October 18, 2016 at 9:43:19 AM UTC-6, A Sun wrote:
>
> Hi, I'm new to kapacitor. I tried to follow the steps in custom anomaly 
> detection example (
> https://docs.influxdata.com/kapacitor/v1.0/examples/anomaly_detection/) 
>
> However, I don't see any alert log files after running the task. 
>
> The data stream seems to be empty after running the test data generator, 
>
>
> ID                                      Type    Status    Size      Date   
>                 
> 8724ca17-7ff5-4694-8b66-aae14d4be7f4    stream  running   0 B       18 Oct 
> 16 10:28 CDT     
>
>
>
> Here's output from "kapacitor show print_temps". It seems some events were 
> processed but no alerts were logged. 
>
> { 
>     "link": { 
>         "rel": "self", 
>         "href": "/kapacitor/v1/tasks/print_temps" 
>     }, 
>     "id": "print_temps", 
>     "template-id": "", 
>     "type": "stream", 
>     "dbrps": [ 
>         { 
>             "db": "printer", 
>             "rp": "autogen" 
>         } 
>     ], 
>     "script": "// This TICKscript monitors the three temperatures for a 3d 
> printing job,\n// and triggers alerts if the temperatures start to 
> experience abnormal behavior.\n\n// Define our desired significance 
> level.\nvar alpha = 0.001\n\n// Select the temperatures measurements\nvar 
> data = stream\n    |from()\n        .measurement('temperatures')\n   
>  |window()\n        .period(5m)\n        .every(5m)\n\ndata\n    // Run our 
> tTest UDF on the hotend temperature\n    @tTest()\n        // specify the 
> hotend field\n        .field('hotend')\n        // Keep a 1h rolling 
> window\n        .size(3600)\n        // pass in the alpha value\n       
>  .alpha(alpha)\n    |alert()\n        .id('hotend')\n        .crit(lambda: 
> \"pvalue\" \u003c alpha)\n       
>  .log('/tmp/test/hotend_failure.log')\n\n// Do the same for the bed and air 
> temperature.\ndata\n    @tTest()\n        .field('bed')\n       
>  .size(3600)\n        .alpha(alpha)\n    |alert()\n        .id('bed')\n     
>    .crit(lambda: \"pvalue\" \u003c alpha)\n       
>  .log('/tmp/test/bed_failure.log')\n\ndata\n    @tTest()\n       
>  .field('air')\n        .size(3600)\n        .alpha(alpha)\n    |alert()\n 
>        .id('air')\n        .crit(lambda: \"pvalue\" \u003c alpha)\n       
>  .log('/tmp/test/air_failure.log')\n", 
>     "vars": {}, 
>     "dot": "digraph print_temps {\ngraph [throughput=\"0.00 
> points/s\"];\n\nstream0 [avg_exec_time_ns=\"0\" ];\nstream0 -\u003e from1 
> [processed=\"86402\"];\n\nfrom1 [avg_exec_time_ns=\"225.328µs\" ];\nfrom1 
> -\u003e window2 [processed=\"86402\"];\n\nwindow2 
> [avg_exec_time_ns=\"160.576µs\" ];\nwindow2 -\u003e tTest7 
> [processed=\"288\"];\nwindow2 -\u003e tTest5 [processed=\"288\"];\nwindow2 
> -\u003e tTest3 [processed=\"288\"];\n\ntTest7 
> [avg_exec_time_ns=\"196.929082ms\" ];\ntTest7 -\u003e alert8 
> [processed=\"214\"];\n\nalert8 [alerts_triggered=\"9\" 
> avg_exec_time_ns=\"9.05µs\" crits_triggered=\"6\" infos_triggered=\"0\" 
> oks_triggered=\"3\" warns_triggered=\"0\" ];\n\ntTest5 
> [avg_exec_time_ns=\"179.950039ms\" ];\ntTest5 -\u003e alert6 
> [processed=\"211\"];\n\nalert6 [alerts_triggered=\"4\" 
> avg_exec_time_ns=\"23.838µs\" crits_triggered=\"3\" infos_triggered=\"0\" 
> oks_triggered=\"1\" warns_triggered=\"0\" ];\n\ntTest3 
> [avg_exec_time_ns=\"114.502568ms\" ];\ntTest3 -\u003e alert4 
> [processed=\"214\"];\n\nalert4 [alerts_triggered=\"4\" 
> avg_exec_time_ns=\"43.406µs\" crits_triggered=\"2\" infos_triggered=\"0\" 
> oks_triggered=\"2\" warns_triggered=\"0\" ];\n}", 
>     "status": "enabled", 
>     "executing": true, 
>     "error": "", 
>     "stats": { 
>         "task-stats": { 
>             "throughput": 0 
>         }, 
>         "node-stats": { 
>             "alert4": { 
>                 "alerts_triggered": 4, 
>                 "avg_exec_time_ns": 43406, 
>                 "collected": 214, 
>                 "crits_triggered": 2, 
>                 "emitted": 0, 
>                 "infos_triggered": 0, 
>                 "oks_triggered": 2, 
>                 "warns_triggered": 0 
>             }, 
>             "alert6": { 
>                 "alerts_triggered": 4, 
>                 "avg_exec_time_ns": 23838, 
>                 "collected": 211, 
>                 "crits_triggered": 3, 
>                 "emitted": 0, 
>                 "infos_triggered": 0, 
>                 "oks_triggered": 1, 
>                 "warns_triggered": 0 
>             }, 
>             "alert8": { 
>                 "alerts_triggered": 9, 
>                 "avg_exec_time_ns": 9050, 
>                 "collected": 214, 
>                 "crits_triggered": 6, 
>                 "emitted": 0, 
>                 "infos_triggered": 0, 
>                 "oks_triggered": 3, 
>                 "warns_triggered": 0 
>             }, 
>             "from1": { 
>                 "avg_exec_time_ns": 225328, 
>                 "collected": 86402, 
>                 "emitted": 86402 
>             }, 
>             "stream0": { 
>                 "avg_exec_time_ns": 0, 
>                 "collected": 86402, 
>                 "emitted": 86402 
>             }, 
>             "tTest3": { 
>                 "avg_exec_time_ns": 114502568, 
>                 "collected": 220, 
>                 "emitted": 214 
>             }, 
>             "tTest5": { 
>                 "avg_exec_time_ns": 179950039, 
>                 "collected": 217, 
>                 "emitted": 211 
>             }, 
>             "tTest7": { 
>                 "avg_exec_time_ns": 196929082, 
>                 "collected": 221, 
>                 "emitted": 214 
>             }, 
>             "window2": { 
>                 "avg_exec_time_ns": 160576, 
>                 "collected": 86402, 
>                 "emitted": 864 
>             } 
>         } 
>     }, 
>     "created": "2016-10-17T21:33:16.176203257-05:00", 
>     "modified": "2016-10-18T10:28:00.685262934-05:00", 
>     "last-enabled": "2016-10-18T10:28:00.685262934-05:00" 
> } 
>

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