Monitoring Docker Swarm task rejection
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Chan Lee
Oct 23, 2020, 5:00:32 PM10/23/20
to Prometheus Users
Hi all,
When monitoring a Docker Swarm, is there a way to track task rejection?
We're currently tracking container health by looking at the change in start time but this doesn't cover the case where a task is rejected (no start time is recorded as it never starts). In our case, a task was continually being rejected because the service was trying mount a directory that didn't exist.
I've done some searching around but I can't seem to find either a query or an exporter that would fill this need. Are there any solutions that you all know about?
We are currently using the following exporters:
- cAdvisor
- Node Exporter
- https://github.com/prometheus-net/docker_exporter
Julien Pivotto
Oct 23, 2020, 5:38:50 PM10/23/20
to Chan Lee, Prometheus Users
On 23 Oct 14:00, Chan Lee wrote:
> Hi all,
>
> When monitoring a Docker Swarm, is there a way to track task rejection?
>
> We're currently tracking container health by looking at the change in start
> time but this doesn't cover the case where a task is rejected (no start
> time is recorded as it never starts). In our case, a task was continually
> being rejected because the service was trying mount a directory that didn't
> exist.
>
> I've done some searching around but I can't seem to find either a query or
> an exporter that would fill this need. Are there any solutions that you all
> know about?
>
> We are currently using the following exporters:
>
> - cAdvisor
> Hi all,
>
> When monitoring a Docker Swarm, is there a way to track task rejection?
>
> We're currently tracking container health by looking at the change in start
> time but this doesn't cover the case where a task is rejected (no start
> time is recorded as it never starts). In our case, a task was continually
> being rejected because the service was trying mount a directory that didn't
> exist.
>
> I've done some searching around but I can't seem to find either a query or
> an exporter that would fill this need. Are there any solutions that you all
> know about?
>
> We are currently using the following exporters:
>
> - Node Exporter
> - https://github.com/prometheus-net/docker_exporter
Are you using the docker swarm discovery ? I would expect that the task
should be scraped anyway ( and fail )
>
>
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--
Julien Pivotto
@roidelapluie
Chan Lee
Oct 26, 2020, 3:24:57 PM10/26/20
to Prometheus Users
Yes, we're using it.
That's the strange thing, I can see it via CLI and through Portainer, but it doesn't register as a new container in the exported metrics.
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