Hi Julius,
Thanks for your reply.
I could not completely understand. I have read about recording rules but in
this context what should come in the place of expr: 1 , should that be
node_filesystem_free_bytes{fstype!~"tmpfs",job!~"example.*",
mountpoint!~"/var/cache/fscache"}?
Thanks
Eswar
On Friday, 15 May 2020 12:01:29 UTC+2, Julius Volz wrote:
>
> There's two options:
>
> - You can set the --collector.filesystem.ignored-mount-points (default
> "^/(dev|proc|sys|var/lib/docker/.+)($|/)") on the specific hosts to not
> even export metrics about that mountpoint, if you never need those metrics
> at all.
>
> - If that's not an option, you could have static recording rules that
> create time series with the instance+job labels that you would want to
> exclude, like:
>
> groups:
> - name: excludes
> rules:
> - record: excluded_instance_mountpoints
> expr: 1
> labels:
> instance: <my-excluded-instance-name1>
> mountpoint: <my-excluded-mountpoint-name1>
> - record: excluded_instance_mountpoints
> expr: 1
> labels:
> instance: <my-excluded-instance-name2>
> mountpoint: <my-excluded-mountpoint-name2>
>
> ...and then you could use those recorded time series to remove alerts for
> those exceptions:
>
> predict_linear(node_filesystem_free_bytes{fstype!~"tmpfs"}[1h], 4 *
> 3600) < 0
> unless on(instance, mountpoint)
> excluded_instance_mountpoints
>
> (you could change "instance" to "job" in the example if indeed your
> exceptions are grouped by "job" in your case)
>
> On Fri, May 15, 2020 at 11:30 AM Ishvar B <[email protected] <javascript:>>
> wrote:
>
>> Hi,
>>
>> I need help for the below issue.
>>
>> I have the below query regarding which as per the query definition is
>> working fine. But for certain host (say example*), I want to exclude
>> /var/cache/fscache metric from alert rule. I am little confused as either
>> it excludes the metric for all the hosts or collects it for all the hosts.
>>
>> query: predict_linear(node_filesystem_free_bytes{fstype!~"tmpfs"}[1h], 4
>> * 3600) < 0 - This collects all metrics for all the hosts
>>
>> updated query:
>> predict_linear(node_filesystem_free_bytes{fstype!~"tmpfs",job!~"example.*",mountpoint!~"/var/cache/fscache"}[1h],
>>
>> 4 * 3600) < 0 - This excludes both the host example* and the mountpoint
>> /var/cache/fscache. I want this to alert for all the metrics for all the
>> hosts but for example* host don't alert for mounpoint /var/cache/fscache.
>>
>> Any help is highly appreciated.
>>
>> Thanks
>> Eswar
>>
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>>
>
>
> --
> Julius Volz
> PromLabs - promlabs.com
>
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