Thank you, Matthias. Please see my comments below. On Monday, November 16, 2020, Matthias Rampke <[email protected]> wrote:
> 1. Now > I would like to understand the definition of ‘Now’. Is it more recent one with a certain timeframe? If so what timeframe? > 2. Uh, not sure, probably better to specify one 😬 > 3. Probably not, end might default to "now" implicitly? > 4. They are different – there are two different types involved here. > `http_request_total` returns an instant vector: a 1-dimensional list of > the value at that instance for each label combination. > `http_request_total[1m]` is a matrix: for each label combination, it has a > list of values going back 1 minute with some automatic step IIRC. Normally > you don't handle these directly; they are used e.g. by rate() to calculate > the rate of counters over this period. > So is giving duration sane as range query with start time, end time and step? > 5. It us returning this matrix. > > The query_range API is an optimized way to make many "instant" requests at > once. You can get logically the same results by calling the query API many > times with different time stamps. For each instant, the response can be of > different types, although in most common queries they will be of the > "instant vector" type because that is what you can build a graph from. > > /MR > > > On Mon, Nov 16, 2020, 04:42 kiran <[email protected]> wrote: > >> Hello all, >> >> I am new to PromQL and would like to understand as I could not find >> things (unless I am missing it) here: >> https://prometheus.io/docs/prometheus/latest/querying/api/ >> >> 1. For an instant query, if I dont give timestamp, then what is the >> logic/default timestamp. >> 2. For range query, what is the default step value if no value is >> provided? >> 3. For range query, are start, and end parameters optional? >> 4. I see that time duration can be given after the metric in square >> brackets (e.g http_requests_total[5m]). Is giving time duration this way >> the same as giving range query with equivalent unix timestamp values for >> start and end parameters? >> >> So I am trying to understand if both the queries below are same and yield >> same result(including result format): >> >> /api/v1/query_range?query=<metricname>[<duration>] >> /api/v1/query_range?query=<metricname>&start=<strartunixtimestamp>&end=< >> endunixtimestamp> >> >> 5. I see that giving duration in square brackets is working for instant >> query as well(e.g /api/v1/query?query=<metricname>[<duration>]), but not >> sure what timeseries it is retrieving. Any valid cases to use this way? >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Prometheus Users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit https://groups.google.com/d/ >> msgid/prometheus-users/CAOnWYZVk%3D-MRzawQ_BHamf_vtS- >> 7960uM5kigO%3DtE559RaGoEw%40mail.gmail.com >> <https://groups.google.com/d/msgid/prometheus-users/CAOnWYZVk%3D-MRzawQ_BHamf_vtS-7960uM5kigO%3DtE559RaGoEw%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/CAOnWYZW%2B-a77Dp%2Bv8vrawj0w6pTBPcq7MOB6Wh8nX04Ecjginw%40mail.gmail.com.
