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49 commits

Author SHA1 Message Date
Aliaksandr Valialkin
38188e1d6b lib/promscrape: store ScrapeWork items by pointer in the slice returned from get*ScrapeWork() 
This should prevent from possible 'memory leaks' when a pointer to ScrapeWork item stored in the slice
could prevent from releasing memory occupied by all the ScrapeWork items stored in the slice when they
are no longer used.

See the related commit e205975716 and the related issue https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825
 2020-12-08 17:55:21 +02:00
Aliaksandr Valialkin
d5faad0240 lib/promscrape: re-use strings for labels stored in ScrapeWork 
This should reduce memory usage when working with big number of scrape targets.
 2020-12-08 12:23:44 +02:00
Aliaksandr Valialkin
b5b32c65b0 lib/promscrape: do not enable strict config parsing when -promscrape.config.dryRun command-line flag is passed 
Strict parsing for -promscrape.config can be enabled by passing `-promscrape.config.strictParse` command-line flag.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/944
 2020-12-07 13:18:16 +02:00
Aliaksandr Valialkin
3f52e59efe app/{vmagent,victoria-metrics}: add -dryRun option and make more clear handling for -promscrape.config.dryRun 2020-11-25 23:01:39 +02:00
Nikolay
bb2bcb9725 Adds eureka service discovery (#913) 
* Adds eureka service discovery
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/851
Netflix service discovery for AWS

* Apply suggestions from code review

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>
 2020-11-20 14:02:13 +02:00
Vasily
8ba168f3be
Add omitempty for DisableCompression and DisableKeepAlive fields in ScrapeConfig (#796) 
* Add omitempty for DisableCompression and DisableKeepAlive fields in ScrapeConfig

* Add omitempty annotation to all the default/optional values

* Fix annotations after review
 2020-11-13 16:17:03 +02:00
Aliaksandr Valialkin
2ec02b7bdb lib/promscrape: pre-allocate slice for discovered targets based on previously discovered targets 
This should reduce load on GC a bit when discovering big number of scrape targets
 2020-11-10 15:57:43 +02:00
Aliaksandr Valialkin
a8562d643b lib/promscrape: add -promscrape.dropOriginalLabels command-line flag for reducing memory usage when discovering big number of scrape targets 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/878
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825
 2020-11-10 00:20:49 +02:00
Aliaksandr Valialkin
aa3e46a02d lib/promscrape: further reduce memory usage for per-scrape target labels by making a copy of actually used labels 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825
 2020-11-09 10:55:03 +02:00
Aliaksandr Valialkin
b8083b7659 lib/promscrape: clean references to label name and label value strings after applying per-target relabeling 
This should reduce memory usage when per-target relabeling creates big number of temporary labels
with long names and/or values.

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825
 2020-11-07 16:19:52 +02:00
Aliaksandr Valialkin
2cd86d0220 lib/promscrape: docs update after e4182dd896 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/878
 2020-11-04 17:13:34 +02:00
Nikolay
d0a9b24c5a reduces memory usage for vmagent, (#880) 
* reduces memory usage for vmagent,
limits count of droppedTarget, that can be stored for /api/v1/targets page up to 999 items,
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/878

* Update app/vmagent/README.md

* Update app/vmagent/README.md

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>
 2020-11-04 17:13:33 +02:00
Aliaksandr Valialkin
f35aafb6a5 Revert "lib/promscrape: add -promscrape.dropOriginalLabels command-line flag for reducing memory usage when discovering big number of scrape targets" 
This reverts commit b08c6f5144.
 2020-11-04 11:45:38 +02:00
Aliaksandr Valialkin
b08c6f5144 lib/promscrape: add -promscrape.dropOriginalLabels command-line flag for reducing memory usage when discovering big number of scrape targets 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/878
 2020-11-04 11:09:05 +02:00
Nikolay
058f49de57 adds leading forward slash check for scrapeURL path (#855) 
* fixes in-consistency with prometheus behaviour for scrape targets url path.
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/835
 2020-11-01 23:22:16 +02:00
Aliaksandr Valialkin
ed724d25ba lib/promscrape: add stream parse mode for efficient scraping of targets that expose millions of metrics 2020-11-01 23:12:26 +02:00
Aliaksandr Valialkin
abdf22e0bb app/vmagent: expose /api/v1/targets page according to https://prometheus.io/docs/prometheus/latest/querying/api/#targets 
This page is exposed by vmagent and by a single-node VictoriaMetrics

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/643
 2020-10-20 21:55:14 +03:00
Nikolay Khramchikhin
7f96712b38 Adds dockerswarm sd (#818) 
* adds dockerswarm service discovery

https://github.com/VictoriaMetrics/VictoriaMetrics/issues/656

 Following roles supported: services, tasks and nodes.
 Basic, token and tls auth supported.
 Added tests for labels generation.

* added unix socket support to discovery utils

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>
 2020-10-12 16:13:58 +03:00
Aliaksandr Valialkin
0d44e371f3 lib/promscrape: add -promscrape.suppressDuplicateScrapeTargetErrors command-line flag in order to suppress duplicate scrape target errors 
Show also original labels for duplicate targets in error message in order to simplify debugging the issue.

Now `/targets` endpoint accepts optional `show_original_labels=1` query arg, which shows original labels for each target.
This may simplify debugging for target relabeling.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/651
 2020-10-08 18:59:25 +03:00
Nikolay Khramchikhin
b4c77fc6d2 Adds openstack sd (#811) 
* adds openstack service discovery

https://github.com/VictoriaMetrics/VictoriaMetrics/issues/728

 implemented hypervisors and instance discovery with openstack v3 api.
 Added tests for labeling and data parsing.
 Added token refresh.

* Apply suggestions from code review

* Apply suggestions from code review

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>
 2020-10-05 16:48:54 +03:00
Aliaksandr Valialkin
60c7397be5 all: support %{ENV_VAR} placeholders in yaml configs in all the vm* components 
Such placeholders are substituted by the corresponding environment variable values.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/583
 2020-08-13 17:17:06 +03:00
Aliaksandr Valialkin
2361ad8ab4 lib/promscrape: add ability to set disable_compression and disable_keepalive options in scrape_config section of the config passed to -promscrape.config 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/580
 2020-07-02 14:19:34 +03:00
Aliaksandr Valialkin
d962568e93 all: use %w instead of %s for wrapping errors in fmt.Errorf 
This will simplify examining the returned errors such as httpserver.ErrorWithStatusCode .
See https://blog.golang.org/go1.13-errors for details.
 2020-06-30 23:33:46 +03:00
Aliaksandr Valialkin
de7e585ac8 lib/promscrape: preserve the previously discovered targets on discovery errors per each job_name 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/582
 2020-06-23 15:42:46 +03:00
Aliaksandr Valialkin
482bae8466 lib/promscrape: add -promscrape.config.dryRun flag for checking -promscrape.config for errors or unsupported options 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/508
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/362
 2020-05-21 14:54:32 +03:00
Aliaksandr Valialkin
8ab5e47b5c lib/promscrape: add Prometheus-compatible DNS-based service discovery aka dns_sd_configs 2020-05-06 00:02:41 +03:00
Aliaksandr Valialkin
89aa6dbf56 lib/promscrape: add Prometheus-compatible service discovery for Consul aka consul_sd_configs 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/330
 2020-05-04 20:53:06 +03:00
Aliaksandr Valialkin
c50fd219dc lib/promscrape/discovery/kubernetes/: unify apiConfig creation 2020-05-04 20:52:53 +03:00
Aliaksandr Valialkin
1f0e8fdc0d lib/promscrape: fix tests after the commit 658a8742ac 
The original commit copies `__address__` label to `instance` label when generating per-target labels as Prometheus does.

See https://www.robustperception.io/life-of-a-label for details.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/453
 2020-05-03 16:59:29 +03:00
DexterZhang
317688f144 fix(vmagent): different behavior as how prometheus deal with labels. [Issue#453] (#454) 2020-05-03 16:59:28 +03:00
Aliaksandr Valialkin
f422203e10 lib/promscrape: reload only modified scrapers on config changes 
This should improve scrape stability when big number of targets are scraped and these targets are frequently changed.

Thanks to @xbsura for the idea and initial implementation attempts at the following pull requests:

- https://github.com/VictoriaMetrics/VictoriaMetrics/pull/449
- https://github.com/VictoriaMetrics/VictoriaMetrics/pull/458
- https://github.com/VictoriaMetrics/VictoriaMetrics/pull/459
- https://github.com/VictoriaMetrics/VictoriaMetrics/pull/460
 2020-05-03 12:47:16 +03:00
Aliaksandr Valialkin
86a1d9cb0c lib/promscrape: add initial support for Prometheus-compatible service discovery for Amazon EC2 aka ec2_sd_configs 2020-04-27 19:29:22 +03:00
Aliaksandr Valialkin
069690e3bd lib/promscrape: initial implementation for gce_sd_configs aga Prometheus-compatible service discovery for Google Compute Engine 2020-04-24 17:53:43 +03:00
Aliaksandr Valialkin
387a21c96d lib/promscrape: add -promscrape.configCheckInterval command-line flag for automating config checking 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/431
 2020-04-23 23:41:26 +03:00
Aliaksandr Valialkin
83e4c8427e lib/promscrape: access Config entries by reference, so they can be compared by addresses 2020-04-23 14:38:29 +03:00
Aliaksandr Valialkin
e220f3eeb6 lib/promscrape: move KubernetesSDConfig to lib/promscrape/discovery/kubernetes 2020-04-23 11:34:30 +03:00
Aliaksandr Valialkin
1187494c8f lib/promscrape/discovery/kubernetes: hide role switch logic behind GetLabels function 2020-04-22 22:16:18 +03:00
Aliaksandr Valialkin
636e1578de lib/promscrape: add promrelabel.GetLabelValueByName helper function 2020-04-14 14:12:15 +03:00
Aliaksandr Valialkin
88366cad15 lib/promscrape: properly expose statuses for targets with duplicate scrape urls at /targets page 
Previously targets with duplicate scrape urls were merged into a single line on the page.
Now each target with duplicate scrape url is displayed on a separate line.
 2020-04-14 13:10:06 +03:00
Aliaksandr Valialkin
09f796e2ab lib/promscrape: remove labels starting with __meta_ after applying relabel_configs as Prometheus does 
This should reduce CPU load during scraping when target discovery generates
big number of `__meta_*` labels (for instance, k8s discovery).

See https://www.robustperception.io/life-of-a-label for details.
 2020-04-14 12:23:30 +03:00
Aliaksandr Valialkin
f58d15f27c lib/promscrape: rename 'scrape_config->scrape_limit' to 'scrape_config->sample_limit' 
`scrape_config` block from Prometheus config contains `sample_limit` field,
while in `vmagent` this field was mistakenly named as `scrape_limit`.
 2020-04-14 12:00:03 +03:00
Aliaksandr Valialkin
7c4fb038e3 lib/promscrape: add initial support for kubernetes_sd_config 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/334
 2020-04-13 21:03:53 +03:00
Aliaksandr Valialkin
4017163393 lib/promscrape: add -promscrape.config.strictParse flag for detecting errors in -promscrape.config file 2020-04-13 13:15:52 +03:00
Aliaksandr Valialkin
7fbfef2aee lib/promscrape: extract common auth code to lib/promauth 2020-04-13 12:59:22 +03:00
Aliaksandr Valialkin
bf1869d33d lib/promscrape: allow overriding external_labels as Prometheus does 
Prometheus docs at https://prometheus.io/docs/prometheus/latest/configuration/configuration/#scrape_config say:

> In communication with external systems, they are always applied only
> when a time series does not have a given label yet and are ignored otherwise.

Though this may result in consistency chaos when scrape targets override `external_labels`,
let's stick with Prometheus behavior for the sake of backwards compatibility.

There is last resort in vmagent with `-remoteWrite.label`, which consistently
sets the configured labels to all the metrics before sending them to remote storage.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/366
 2020-03-12 20:25:27 +02:00
Aliaksandr Valialkin
7545784a49 all: fix golangci-lint issues 2020-03-10 19:40:03 +02:00
Aliaksandr Valialkin
12789a4621 app/vmagent: do not allow non-supported fields in -remoteWrite.relabelConfig and file_sd_configs 
This should reduce possible confusion like in the https://github.com/VictoriaMetrics/VictoriaMetrics/issues/363
 2020-03-06 20:19:34 +02:00
Aliaksandr Valialkin
f2a6948a14 lib/promscrape: do not add missing port to __address__ label in order to be consistent with Prometheus behavior 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/331
 2020-02-25 20:50:18 +02:00
Aliaksandr Valialkin
7ee7614e90 app/vmagent: initial implementation for vmagent 2020-02-23 17:31:54 +02:00