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63 Commits (d532272520610c0e8fcb6ae83c90411f9873b08b)

Author SHA1 Message Date
Brian Brazil d532272520 Add stalemarkers to synthetic series too when target stops. 2017-05-16 18:33:51 +01:00
Brian Brazil b87d3ca9ea Create stale markers when a target is stopped. 
When a target is no longer returned from SD stop()
is called. However it may be recreated before the
next scrape interval happens. So we wait to set stalemarkers
until the scrape of the new target would have happened
and been ingested, which is 2 scrape intervals.

If we're shutting down the context will be cancelled,
so return immediately rather than holding things up for potentially
minutes waiting to safely set stalemarkers no newer than now.
If the server starts immediately back up again all is well.
If not, we're missing some stale markers.
 2017-05-16 18:33:51 +01:00
Brian Brazil 95162ebc16 Add log messages for out of order samples 2017-05-16 18:33:51 +01:00
Brian Brazil 3c45400130 Don't fail scrape if one sample violates ordering. 
In Prometheus 1.x one sample that is out of order
or that has a duplicate timestamp is discarded, and
the rest of the scrape ingestion continues on.
This will now also be true for 2.0.
 2017-05-16 18:33:51 +01:00
Brian Brazil fd5c5a50a3 Add stale markers on parse error. 
If we fail to parse the result of a scrape,
we should treat that as a failed scrape and
add stale markers.
 2017-05-16 18:33:51 +01:00
Brian Brazil c0c7e32e61 Treat a failed scrape as an empty scrape for staleness. 
If a target has died but is still in SD, we want the previously
scraped values to go stale. This would also apply to brief blips.
 2017-05-16 18:33:51 +01:00
Brian Brazil 850ea412ad If an explicit timestamp is provided, bypass staleness. 2017-05-16 18:33:51 +01:00
Brian Brazil a5cf25743c Move stalness check into a function 2017-05-16 18:33:51 +01:00
Brian Brazil 4f35952cf3 Inject a stale NaN when sample disappears between scrapes. 2017-05-16 18:33:51 +01:00
Brian Brazil beaa7d5a43 Move consistent NaN logic into the parser. 2017-05-16 18:33:51 +01:00
Brian Brazil 76acf7b9b1 Ensure all the NaNs we ingest have the same bit pattern. 2017-05-16 18:33:51 +01:00
Brian Brazil 0eabed8048 Remove unused metric 2017-05-15 15:06:54 +01:00
Fabian Reinartz 76b3378190 retrieval: add missing scrape context cancelation 2017-05-11 17:20:03 +02:00
Fabian Reinartz e829dbe2be retrieval: comment out accept header again 2017-04-27 11:46:08 +02:00
Fabian Reinartz 73b8ff0ddc Merge branch 'master' into dev-2.0 2017-04-27 10:19:55 +02:00
Matt Layher 5e4f5fb5ad retrieval: make scrape timeout header consistent with others 2017-04-05 14:56:22 -04:00
Alexey Palazhchenko 17f15d024a Small fixes. (#2578) 
Fix typos. Simplify with gofmt -s
 2017-04-05 14:24:22 +01:00
Matt Layher fe4b6693f7 retrieval: add Scrape-Timeout-Seconds header to each scrape request (#2565) 
Fixes #2508.
 2017-04-04 18:26:28 +01:00
Fabian Reinartz 8ffc851147 Merge branch 'master' into dev-2.0 2017-04-04 15:17:56 +02:00
Julius Volz 815762a4ad Move retrieval.NewHTTPClient -> httputil.NewClientFromConfig 2017-03-20 14:17:04 +01:00
Fabian Reinartz c389193b37 Merge branch 'master' into dev-2.0 2017-03-17 16:27:07 +01:00
Fabian Reinartz d9fb57cde4 *: Simplify []byte to string unsafe conversion 2017-03-07 11:41:11 +01:00
Erdem Agaoglu 8809735d7f Setting User-Agent header (#2447) 2017-02-28 09:59:33 -04:00
Fabian Reinartz cc0ff26f1f retrieval: handle GZIP compression ourselves 
The automatic GZIP handling of net/http does not preserve
buffers across requests and thus generates a lot of garbage.
We handle GZIP ourselves to circumvent this.t
 2017-02-22 13:25:25 +01:00
Fabian Reinartz 5772f1a7ba retrieval/storage: adapt to new interface 
This simplifies the interface to two add methods for
appends with labels or faster reference numbers.
 2017-02-02 13:05:46 +01:00
Fabian Reinartz 1d3cdd0d67 Merge branch 'master' into dev-2.0-rebase 2017-01-30 17:43:01 +01:00
Fabian Reinartz 598e2f01c0 retrieval: don't erronously break appending 2017-01-17 08:39:18 +01:00
Fabian Reinartz c691895a0f retrieval: cache series references, use pkg/textparse 
With this change the scraping caches series references and only
allocates label sets if it has to retrieve a new reference.
pkg/textparse is used to do the conditional parsing and reduce
allocations from 900B/sample to 0 in the general case.
 2017-01-16 12:03:57 +01:00
Fabian Reinartz ad9bc62e4c storage: extend appender and adapt it 2017-01-13 14:48:01 +01:00
Björn Rabenstein ad40d0abbc Merge pull request #2288 from prometheus/limit-scrape 
Add ability to limit scrape samples, and related metrics
 2017-01-08 01:34:06 +01:00
beorn7 3610331eeb Retrieval: Do not buffer the samples if no sample limit configured 
Also, simplify and streamline the code a bit.
 2017-01-07 18:18:54 +01:00
Fabian Reinartz e631a1260d retrieval: use separate appender per target 2016-12-30 21:35:35 +01:00
Fabian Reinartz f8fc1f5bb2 *: migrate ingestion to new batch Appender 2016-12-29 11:03:56 +01:00
Brian Brazil f421ce0636 Remove label from prometheus_target_skipped_scrapes_total (#2289) 
This avoids it not being intialised, and breaking out by
interval wasn't partiuclarly useful.

Fixes #2269
 2016-12-16 18:00:52 +00:00
Brian Brazil 30448286c7 Add sample_limit to scrape config. 
This imposes a hard limit on the number of samples ingested from the
target. This is counted after metric relabelling, to allow dropping of
problemtic metrics.

This is intended as a very blunt tool to prevent overload due to
misbehaving targets that suddenly jump in sample count (e.g. adding
a label containing email addresses).

Add metric to track how often this happens.

Fixes #2137
 2016-12-16 15:10:09 +00:00
Brian Brazil c8de1484d5 Add scrape_samples_post_metric_relabeling 
This reports the number of samples post any keep/drop
from metric relabelling.
 2016-12-13 17:32:11 +00:00
Brian Brazil 06b9df65ec Refactor and add unittests to scrape result handling. 2016-12-13 16:49:17 +00:00
Brian Brazil b5ded43594 Allow buffering of scraped samples before sending them to storage. 2016-12-13 15:01:35 +00:00
Fabian Reinartz 200bbe1bad config: extract SD and HTTPClient configurations 2016-11-23 18:23:37 +01:00
Fabian Reinartz 47623202c7 retrieval: remove metric namespaces 2016-11-23 09:17:04 +01:00
Fabian Reinartz d7f4f8b879 discovery: move TargetSet into discovery package 2016-11-23 09:14:44 +01:00
Brian Brazil 64263f280d Add scrape_samples_scraped to indicate samples scraped. (#2123) 2016-10-26 17:43:01 +01:00
Matt Bostock 4fc619b605 Scrape: Remove JSON from Accept request header 
JSON is no longer supported as an exposition format [1] [2] [3]. Remove
it from the `Accept` header added to requests when scraping targets.

[1]: https://github.com/prometheus/prometheus/blob/master/CHANGELOG.md#100--2016-07-18
[2]: https://prometheus.io/docs/instrumenting/exposition_formats/#historical-versions
[3]: https://docs.google.com/document/d/1ZjyKiKxZV83VI9ZKAXRGKaUKK2BIWCT7oiGBKDBpjEY/edit?usp=sharing
 2016-09-17 10:28:03 +01:00
Fabian Reinartz 0322c59dc3 retrieval: export NewHTTPClient 2016-09-05 16:44:40 +02:00
beorn7 064b57858e Consistently use the `Seconds()` method for conversion of durations 
This also fixes one remaining case of recording integral numbers
of seconds only for a metric, i.e. this will probably fix #1796.
 2016-07-07 15:24:35 +02:00
beorn7 45e5775f9b Add missing logging of out-of-order samples 
So far, out-of-order samples during rule evaluation were not logged,
and neither scrape health samples. The latter are unlikely to cause
any errors. That's why I'm logging them always now. (It's alway highly
irregular should it happen.) For rules, I have used the same plumbing
as for samples, just with a different wording in the message to mark
them as a result of rule evaluation.
 2016-05-19 16:22:53 +02:00
beorn7 d566808d40 Bring back logging of discarded samples 
But only on DEBUG level.

Also, count and report the two cases of out-of-order timestamps on the
one hand and same timestamp but different value on the other hand
separately.
 2016-04-25 16:43:52 +02:00
Fabian Reinartz 769389e559 Fix potential race in ctx intialization 2016-04-05 20:27:31 +02:00
Tobias Schmidt e82ef154ee Remove unused code leftovers 2016-04-02 20:20:55 -04:00
stuart nelson dbe5d18b6e Instrument scrape pool `sync()` 
Instruments:
- duration
- count
 2016-03-14 18:30:16 +01:00