The error here:
> [cpu_alert:mean3] 2016/08/11 13:34:01 E! invalid field type: <nil>
Is referring to the `|mean('value')` call, which is receiving a null value
for the "value" field. To fix that you'll either need to:
* Remove it, since it doesn't look like you're using it anywhere anyways
(and Telegraf no longer uses "value" as a field to my knowledge)
* Add a `|default().field('value', 0.0)` call before taking the mean of
value so that it defaults to 0 if it is not provided in the stream
I hope that helps!
Thanks,
Ross
On Thu, Aug 11, 2016 at 8:39 AM, <[email protected]> wrote:
> [edge:cpu_alert|mean3->default4] 2016/08/11 13:34:01 D! closing c: 0 e: 0
> [edge:cpu_alert|window2->mean3] 2016/08/11 13:34:01 I! aborting c: 1 e: 1
> [cpu_alert:mean3] 2016/08/11 13:34:01 E! invalid field type: <nil>
> [edge:cpu_alert|default4->eval5] 2016/08/11 13:34:01 D! closing c: 0 e: 0
> [edge:cpu_alert|eval5->alert6] 2016/08/11 13:34:01 D! closing c: 0 e: 0
> [edge:cpu_alert|stream->stream0] 2016/08/11 13:34:01 D! closing c: 129 e:
> 129
> [edge:cpu_alert|stream0->from1] 2016/08/11 13:34:01 D! closing c: 129 e:
> 129
> [edge:cpu_alert|from1->window2] 2016/08/11 13:34:01 D! closing c: 129 e:
> 129
> [edge:cpu_alert|window2->mean3] 2016/08/11 13:34:01 D! closing c: 1 e: 1
> [task_master] 2016/08/11 13:34:01 E! Stopped task: cpu_alert invalid field
> type: <nil>
> [task_store] 2016/08/11 13:34:01 E! task cpu_alert finished with error:
> invalid field type: <nil>
>
>
>
>
> Getting this error , what should I do ??
>
>
> Following is the output of my show task :
>
>
>
>
> kapacitor show cpu_alert
> ID: cpu_alert
> Error:
> Type: stream
> Status: enabled
> Executing: true
> Created: 11 Aug 16 11:45 UTC
> Modified: 11 Aug 16 13:32 UTC
> LastEnabled: 11 Aug 16 13:32 UTC
> Databases Retention Policies: ["telegraf"."default"]
> TICKscript:
> stream
> |from()
> .measurement('cpu')
> .groupBy('host')
> |window()
> .period(1m)
> .every(1m)
> |mean('value')
> |default()
> .field('usage_user', 0.0)
> .tag('host', '')
> |eval(lambda: 100.0 - "mean")
> .as('used')
> |alert()
> .message('{{ .Level}}: {{ .Name }}/{{ index .Tags "host" }} has
> high cpu usage: {{ index .Fields "usage_user" }}')
> .info(lambda: TRUE)
> .warn(lambda: "usage_user" > 60.0)
> .crit(lambda: "usage_user" > 85.0)
> .log('/tmp/high_cpu.log')
>
>
> DOT:
> digraph cpu_alert {
> graph [throughput="0.00 points/s"];
>
> stream0 [avg_exec_time_ns="0" ];
> stream0 -> from1 [processed="20"];
>
> from1 [avg_exec_time_ns="1.156µs" ];
> from1 -> window2 [processed="20"];
>
> window2 [avg_exec_time_ns="0" ];
> window2 -> mean3 [processed="0"];
>
> mean3 [avg_exec_time_ns="0" ];
> mean3 -> default4 [processed="0"];
>
> default4 [avg_exec_time_ns="0" fields_defaulted="0" tags_defaulted="0" ];
> default4 -> eval5 [processed="0"];
>
> eval5 [avg_exec_time_ns="0" eval_errors="0" ];
> eval5 -> alert6 [processed="0"];
>
> alert6 [alerts_triggered="0" avg_exec_time_ns="0" crits_triggered="0"
> infos_triggered="0" oks_triggered="0" warns_triggered="0" ];
> }
>
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