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573 commits

Author SHA1 Message Date
Aliaksandr Valialkin
bae7a1b47a lib/promscrape/discovery/kubernetes: fix tests after e154f4a644 2021-03-03 22:42:04 +02:00
Nikolay
7d92ef3acd Fix ingress discovery api (#1110) 2021-03-03 10:45:50 +02:00
Aliaksandr Valialkin
25f453ce1a lib/promscrape/discovery/kubernetes: properly check for nil pointer inside interface 
See https://mangatmodi.medium.com/go-check-nil-interface-the-right-way-d142776edef1

This fixes a panic when the ScrapeWork is filtered out in swcFunc.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1108
 2021-03-03 10:42:54 +02:00
Aliaksandr Valialkin
fea27b9845 lib/promscrape: go fmt 2021-03-02 21:20:23 +02:00
Aliaksandr Valialkin
3fbe2bf1c8 lib/promscrape: pre-allocate space for a map in mergeLabels 
This should reduce the number of memory allocations when discovering big number of targets
 2021-03-02 18:42:44 +02:00
Aliaksandr Valialkin
ac5c47a9f5 lib/promscrape/discovery: properly track vm_promscrape_discovery_kubernetes_objects_removed_total metric 2021-03-02 18:33:29 +02:00
Aliaksandr Valialkin
f9c1fe3852 lib/promscrape/discovery/kubernetes: cache ScrapeWork objects as soon as the corresponding k8s objects are changed 
This should reduce CPU usage and memory usage when Kubernetes contains tens of thousands of objects
 2021-03-02 16:44:19 +02:00
Aliaksandr Valialkin
f686174329 lib/promscrape/discovery/ec2: follow-up after f6114345de 2021-03-02 13:47:35 +02:00
Nikolay
fd8ca7df50 Adds webIndentity token for aws (#1099) 
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1080
 2021-03-02 13:47:34 +02:00
Aliaksandr Valialkin
b89a4fac2f lib/promscrape/discovery/kubernetes: deflake tests; a follow-up for 05fb08713c 2021-03-01 14:31:44 +02:00
Aliaksandr Valialkin
c3bf72992f lib/promscrape: explicitly stop and cleanup service discovery routines when new config is read from -promscrape.config 
This should reduce memory usage when `-promscrape.config` file frequently changes
 2021-03-01 14:15:16 +02:00
Aliaksandr Valialkin
8af9370bf2 lib/promscrape: use target arg in ScrapeWork cache 2021-03-01 12:31:11 +02:00
Aliaksandr Valialkin
5328506c3e lib/promscrape: typo fix, which prevented from caching ScrapeWork entries 2021-03-01 12:13:13 +02:00
Aliaksandr Valialkin
d5058caccc lib/promscrape: add vm_promscrape_scrapework_cache_* metrics for tracking ScrapeWork cache effectiveness 2021-03-01 12:05:58 +02:00
Aliaksandr Valialkin
109bfaadad lib/promscrape: reduce CPU usage an memory allocations when constructing scrapeWorkKey 2021-02-28 22:30:36 +02:00
Aliaksandr Valialkin
9a2bf65134 lib/promscrape: add ability to spread scrape targets among multiple vmagent instances 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1084
 2021-02-28 18:40:42 +02:00
Aliaksandr Valialkin
3e44d9947e lib/promscrape/discovery/kubernetes: properly account the number of objects when watcher is stopped 
A follow-up for b21b110b7a
 2021-02-28 17:06:49 +02:00
Aliaksandr Valialkin
0ef7a94056 lib/promscrape/discovery/kubernetes: add vm_promscrape_discovery_kubernetes_* metrics for monitoring internal state of k8s service discovery 2021-02-28 16:58:45 +02:00
Aliaksandr Valialkin
f52bdbe2a3 lib/promscrape/discovery/kubernetes: remove resourceVersionMatch=NotOlderThan query arg when watching for k8s object changes, since it cannot be used when watch=1 query arg is passed 2021-02-28 16:08:43 +02:00
Aliaksandr Valialkin
6f8866a40a lib/promscrape: fix possible deadlock in parallel execution of target relabeling 2021-02-28 16:05:32 +02:00
Aliaksandr Valialkin
5c9e657808 lib/promscrape/discovery/kubernetes: fix deadlock in startWatcherForURL 
reloadObjects must be called without holding aw.mu lock
 2021-02-28 15:25:33 +02:00
Aliaksandr Valialkin
e77f2f8630 lib/promscrape/discovery/kubernetes: typo fix after 241ffd1f3b 2021-02-28 15:15:27 +02:00
Aliaksandr Valialkin
82441537ff lib/promscrape/discovery/kubernetes: pre-populate labelsByKey in reloadObject() 2021-02-28 15:09:43 +02:00
Aliaksandr Valialkin
e003453941 lib/promscrape/discovery/kubernetes: compare sorted sets of labels in tests 
This should deflake tests where the order of labels isn't stable
 2021-02-28 14:12:32 +02:00
Aliaksandr Valialkin
6a21ef87b7 lib/promscrape: add missing startWatchersForRole() call at the beginning of apiWatcher.getLabelsForRole 2021-02-28 14:00:00 +02:00
Aliaksandr Valialkin
6d0e7fb8b0 lib/promscrape/discovery/kubernetes: reload k8s resources on every error 
This is needed for obtaining fresh resourceVersion
 2021-02-27 01:46:59 +02:00
Aliaksandr Valialkin
44975e28fe lib/promscrape: yet another typo fix after ed8441ec52 2021-02-26 23:36:34 +02:00
Aliaksandr Valialkin
50e74c439c lib/promscrape: typo fix after ed8441ec52 2021-02-26 23:04:40 +02:00
Aliaksandr Valialkin
fa3ce450fb lib/promscrape: cache ScrapeWork 
This should reduce the time needed for updating big number of scrape targets.
 2021-02-26 21:43:41 +02:00
Aliaksandr Valialkin
efcdf613c2 lib/promscrape/discovery/kubernetes: cache target labels 
This should reduce CPU usage on repeated SDConfig.GetLabels() calls.
 2021-02-26 20:24:29 +02:00
Aliaksandr Valialkin
22822feea3 lib/promscrape/discovery/kubernetes: errcheck fix 2021-02-26 19:09:12 +02:00
Aliaksandr Valialkin
dc8c045378 lib/promscrape: cleanup after 9b2246c29b 
Main points:

* Revert changes outside lib/promscrape/discovery/kuberntes . These changes can be applied later in a separate commit
* Minimize changes in lib/promscrape/discovery/kubernetes compared to a93e644001
* Corner case fixes.
 2021-02-26 19:09:12 +02:00
Nikolay
cf9262b01f vmagent kubernetes watch stream discovery. (#1082) 
* started work on sd for k8s

* continue work on watch sd

* fixes

* continue work

* continue work on sd k8s

* disable gzip

* fixes typos

* log errror

* minor fix

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>
 2021-02-26 19:09:12 +02:00
Aliaksandr Valialkin
4cfac70cde lib/promscrape: remove duplicate code a bit 2021-02-26 15:54:07 +02:00
Aliaksandr Valialkin
55eb983193 lib/promscrape: reduce processing time for big number of discovered targets by processing them in parallel 2021-02-26 12:48:48 +02:00
Aliaksandr Valialkin
197ecca426 lib/promrelabel: add more optimizations for relabeling for common cases 2021-02-22 16:36:54 +02:00
Aliaksandr Valialkin
8b87398333 lib/promscrape: export vm_promscrape_target_relabel_duration_seconds metric 2021-02-21 23:21:35 +02:00
Aliaksandr Valialkin
f09b46b2b1 lib/promscrape: typo fix after the commit f26162ec99 2021-02-19 00:34:18 +02:00
Aliaksandr Valialkin
502d0e2524 lib/promscrape: add scrape_align_interval config option into scrape config 
This option allows aligning scrapes to a particular intervals.
 2021-02-18 23:53:04 +02:00
Aliaksandr Valialkin
fccb481de2 lib/promscrape/discovery/kubernetes: add __meta_kubernetes_endpoints_label_* and __meta_kuberntes_endpoints_annotation_* labels to role: endpoints 
This syncs kubernetes SD with Prometheus 2.25
See 617c56f55a
 2021-02-15 02:51:36 +02:00
Aliaksandr Valialkin
18c2075159 lib/promscrape: remove vm_promscrape_scrapes_failed_per_url_total and vm_promscrape_scrapes_skipped_by_sample_limit_per_url_total metrics 
These metrics may result in big number of time series when vmagent scrapes thousands of targets and these targets constantly changes.

* It is better using `up == 0` query for determining failing targets.
* It is better using the following query for determining targets with exceeded limit on the number of metrics:

  scrape_samples_scraped > 0 if up == 0
 2021-02-12 05:23:27 +02:00
Nikolay
6fc2a8e544 fixes dockerswarm (#1053) 
fixes improper usage of host network services
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1028
 2021-02-04 15:57:41 +02:00
Aliaksandr Valialkin
755b0998ce lib/promscrape: add vm_promscrape_service_discovery_duration_seconds metric 2021-02-02 16:16:51 +02:00
Aliaksandr Valialkin
4c59dbc127 lib/promscrape: add vm_promscrape_scrape_retries_total, vm_promscrape_discovery_retries_total and vm_promscrape_discovery_requests_total metrics 2021-02-01 20:06:16 +02:00
Aliaksandr Valialkin
ffec5131ae lib/promscrape: export vm_promscrape_scrapes_failed_per_url_total and vm_promscrape_scrapes_skipped_by_sample_limit_per_url_total metrics 
These metrics could be useful for determining imporperly working scrape targets.
Note that these metrics are exported only for failing scrape targets. They aren't exposed for normally working targets.
 2021-01-27 00:40:39 +02:00
Aliaksandr Valialkin
4b324da947 all: consistently use timers from timerpool 2021-01-27 00:40:39 +02:00
Aliaksandr Valialkin
fdced59278 lib/promscrape: retry scrape and service discovery requests when the remote server closes http keep-alive connection 2021-01-22 13:22:59 +02:00
Nikolay
9f0a4fd00e Fixes error handling for promscrape.streamParse (#1009) 
properly return error if client cannot read data,
properly suppress scraper errors
 2021-01-12 13:35:09 +02:00
Aliaksandr Valialkin
c97681b45c lib/promscrape: properly show scrape duration on /targets page 
Previously it has been shown as 0.000s for any scrape duration.
 2021-01-11 21:15:50 +02:00
Nikolay
dd2f815204 fixes kubernetes_sd (#983) 
* fixes kubernetes_sd,
adds missing service metadata for pod ports without endpoint
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/982

* fix test
 2020-12-24 11:34:12 +02:00
Aliaksandr Valialkin
367fc17933 lib/promscrape: code prettifying for 8dd03ecf19 2020-12-24 10:57:20 +02:00
Nikolay
b00f7816e2 adds proxy_url support, (#980) 
* adds proxy_url support,
adds proxy_url to the dockerswarm, eureka, kubernetes and consul service discovery,
adds proxy_url to the scrape_config for targets scrapping,
http based proxy is supported atm,
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/503

* fixes imports
 2020-12-24 10:57:19 +02:00
Aliaksandr Valialkin
1ee5a234dc lib/promscrape: remove ID field from ScrapeWork struct. Use a pointer to ScrapeWork as a key in targetStatusMap 
This simplifies the code a bit.
 2020-12-17 14:31:55 +02:00
Aliaksandr Valialkin
c4ec977934 lib/promscrape: properly remove deleted target from /targets page 
Previously `sw` variable wasn't captured correctly by the started goroutine.
 2020-12-15 20:58:37 +02:00
Aliaksandr Valialkin
eddc2bd017 lib/promscrape: properly handle scrape errors when stream parsing is enabled 
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/967
 2020-12-15 14:10:52 +02:00
Aliaksandr Valialkin
104aac170e lib/promscrape: add bootstrap styles to /targets html page 2020-12-15 12:38:29 +02:00
Aliaksandr Valialkin
ad961fe1f1 lib/promscrape: formatting fixes for /tarets page 2020-12-15 11:59:28 +02:00
Aliaksandr Valialkin
38145cfbb8 lib/promscrape: formatting fixes for /targets page 2020-12-15 11:27:22 +02:00
Aliaksandr Valialkin
b904ae3722 lib/promscrape: add missing whitespace between duration and ago word at /targets page 2020-12-14 14:20:30 +02:00
Aliaksandr Valialkin
a2eb451de4 app/{vmagent,vminsert}: follow-up for ce8c2dd1f1: return /targets page in HTML when requested via web browser 2020-12-14 14:13:01 +02:00
Nikolay
324e3aa1a5 Changes targets api (#961) 
* changes /targets api
adds html response if requester accepts text/html,
adds quick template for /targets api,
fixes pathPrefix for / requests

* changes namings

* renamed targets file

* Update app/victoria-metrics/main.go

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>

* adds trimspace to qtpl,
moves content-type for targets response closer to writer

* fixes bug with prefix

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>
 2020-12-14 14:13:00 +02:00
Aliaksandr Valialkin
c80d38f00c lib/promscrape/discovery/consul: reduce load on Consul API server by increasing timeout for blocking requests from 50 seconds to 9 minutes 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/574
 2020-12-11 17:26:34 +02:00
Aliaksandr Valialkin
a84467958a lib/promscrape/discovery/consul: properly pass Datacenter filter to Consul API server 
Previously it has been passed as `sdc` query arg, while it should be passed as `dc` query arg.
See https://www.consul.io/api-docs/health#list-nodes-for-service for details.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/574#issuecomment-740454170
 2020-12-08 21:53:23 +02:00
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
06091cfdf8 lib/promscrape: export vm_promscrape_scrapers_{started|stopped}_total metrics for monitoring target churn rate 2020-12-08 11:58:44 +02:00
Aliaksandr Valialkin
affcee199c lib/promscrape: store targetStatus entries in targetStatusMap by pointer instead of by value 
This guarantees that GC frees memory occupied by targetStatus after it is unregistered from targetStatusMap.
 2020-12-08 11:52:20 +02:00
Aliaksandr Valialkin
56a0b058c1 lib/promscrape: export vm_promscrape_active_scrapers{type="<sd_type>"} metric for tracking the number of active scrapers per each service discovery type 2020-12-08 01:54:44 +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
9d79d11a6c lib/promscrape: mention in scrape error message that scrape errors can be disabled by -promscrape.suppressScrapeErrors command-line flag 2020-12-06 23:27:07 +02:00
Aliaksandr Valialkin
f6d32f99d7 lib/promscrape: clarify error message on failed connection to scrape target when -enableTCP6 command-line flag isn't set 2020-12-06 13:19:32 +02:00
Aliaksandr Valialkin
1430bbcf33 lib/promscrape/discoveryutils: remove limit on the number of concurrently running blocking queries 
Too low limit could result in unexpected errors when performing big number of blocking queries.
 2020-12-05 12:15:47 +02:00
Aliaksandr Valialkin
96190f9d45 lib/promscrape/discovery/consul: log the time needed for stoppig Consul service watcher 2020-12-03 20:14:48 +02:00
Aliaksandr Valialkin
4e4a93c586 lib/promscrape/discovery/consul: make sure that block response contains X-Consul-Index header 2020-12-03 20:05:54 +02:00
Aliaksandr Valialkin
7a889f6850 lib/promscrape: code cleanup after c6dee6c52d 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/574
 2020-12-03 19:52:09 +02:00
Nikolay
0b302d33cb Changes consul discovery api (#921) 
* adds consul watch api,
it must reduce load on consul service with blocking wait requests,
changed discoveryClient api with fetchResponseMeta callback.

* small fix

* fix after master merge

* adds watch client at discovery utils

* fixes consul watcher,
changes namings,
fixes data race

* small typo fix

* sanity fix

* fix naming and service node update
 2020-12-03 19:52:08 +02:00
Aliaksandr Valialkin
2385ac11c0 lib/promscrape: fix failing tests after a906b3862f 2020-11-29 01:25:49 +02:00
Aliaksandr Valialkin
3bb9bf33d6 lib/promscrape: reduce memory allocations when unpacking gzipped responses received from scrape targets 2020-11-26 18:32:16 +02:00
Aliaksandr Valialkin
af667c59c1 all: typo fix: thouthand->thousand 2020-11-26 13:34:05 +02:00
Aliaksandr Valialkin
3dd2282ed9 lib/promscrape: release http response non-200 status code 2020-11-26 13:25:25 +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
Aliaksandr Valialkin
8b82f9d8b8 lib/promscrape: expose __meta_ec2_ipv6_addresses label for ec2_sd_config like Prometheus will do in the next release 2020-11-23 16:57:03 +02:00
Aliaksandr Valialkin
c2186279b7 lib/promscrape: add filters option to dockerswarm_sd_config like Prometheus did in v2.23.0 2020-11-23 16:27:33 +02:00
Aliaksandr Valialkin
d892d63204 lib/promscrape: hint that -enableTCP6 command-line flag can be used for connecting to IPv6 addresses 2020-11-21 14:39:05 +02:00
Aliaksandr Valialkin
8608e956dd lib/promscrape/discovery/eureka: follow-up after eec76718e9 2020-11-20 14:02:14 +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
697fd44158 lib/promscrape: make a copy of ScrapeWork from discovered []ScrapeWork slice instead of referring to an item in this slice 
This should prevent from holding previously discovered []ScrapeWork slices when a part of discovered targets changes over time.
This should reduce memory usage for the case when big number of discovered scrape targets changes over time.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825
 2020-11-10 16:13:31 +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
b4efe626d7 lib/promscrape/discovery/kubernetes: go fmt 2020-11-07 13:04:09 +02:00
Aliaksandr Valialkin
92bc1afcee lib/promscrape/discovery/kubernetes: reduce memory usage for labels when discovering big number of scrape targets by using string concatenation instead of fmt.Sprintf 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825
 2020-11-07 13:03:01 +02:00
Aliaksandr Valialkin
535fea3d11 lib/promscrape: eliminate data race in stream parse mode 
Previously `-promscrape.streamParse` mode could result in garbage labels for the scraped metrics because of data race.
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825#issuecomment-723198247
 2020-11-07 12:45:52 +02:00
Nikolay
5b235b902b Adds ready probe (#874) 
* adds leading forward slash check for scrapeURL path
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/835

* adds ready probe for scrape config initialization,
it should prevent metrics loss during vmagent rolling update,
/ready api will return 425 http code, if some scrape config still waits for initialization.

* updates docs

* Update app/vmagent/README.md

* renames var

* Update app/vmagent/README.md

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>
 2020-11-04 20:33:48 +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
Aliaksandr Valialkin
c046735571 lib/promscrape: reduce memory allocations in promLabelsString() function 
This should help with reducing memory usage in https://github.com/VictoriaMetrics/VictoriaMetrics/issues/878
 2020-11-04 10:38:59 +02:00
Aliaksandr Valialkin
3ed9f1d5a9 lib/promscrape: properly handle response body after 301 redirect 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/869
 2020-11-02 01:09:59 +02:00
Nikolay
e8fe618bbb fixes panic at scrape error body formating, (#868) 
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/864
regression after body reuse improvements
 2020-11-01 23:25:23 +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
a5d842caf8 fixes openstack api endpoint with suffix trim adds openstack (#840) 
api v2.0 check

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/728
 2020-10-16 23:01:45 +03:00
Aliaksandr Valialkin
938b3b7ed1 lib/promscrape: code prettifying after 9bd9f67718 2020-10-12 16:13:59 +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
a93c62cd60 lib/promscrape: fix tests after 71ea4935de 2020-10-08 19:32:48 +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
Aliaksandr Valialkin
1da41177a8 lib/promscrape/discovery/openstack: show expiration time for refreshed OpenStack token in seconds - this is easier to interpret by human 2020-10-06 11:20:36 +03:00
Aliaksandr Valialkin
50316070d6 lib/promscrape/discovery/openstack: code prettifying after cbe3cf683b 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/728
 2020-10-05 18:12:31 +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
7505e4f390 lib/promrelabel: make a copy of label with new name for action: labelmap in the same way as Prometheus does 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/812
 2020-10-05 16:20:22 +03:00
Aliaksandr Valialkin
543f3aea97 all: consistently use "%w" formatting in fmt.Errorf for wrapped errors 2020-09-23 22:48:21 +03:00
Aliaksandr Valialkin
f961838290 lib/promscrape/discovery/ec2: code prettifying after 312fead9a2 2020-09-21 18:44:04 +03:00
Nikolay Khramchikhin
0069353d5e Add improvements to ec2_sd_discovery (#775) 
* Add improvements to ec2 discovery

https://github.com/VictoriaMetrics/VictoriaMetrics/issues/771

 role_arn support with aws sts
 instance iam_role support
 refreshing temporary tokens

* Apply suggestions from code review

Co-authored-by: Roman Khavronenko <hagen1778@gmail.com>

* changed implementation, removed tests, clean up code

* moved endpoint builder into getEC2APIResponse

Co-authored-by: Roman Khavronenko <hagen1778@gmail.com>
 2020-09-21 16:05:01 +03:00
Aliaksandr Valialkin
8fd791d399 lib/promscrape: avoid copying response body when scraping targets. 
This should reduce memory usage when scraping targets with millions of metrics.
 2020-09-18 13:06:00 +03:00
Aliaksandr Valialkin
0c1c1b79ba lib/promscrape: add a link to troubleshooting docs to error message when duplicate scrape target with identical labels is skipped 2020-09-15 14:16:20 +03:00
Aliaksandr Valialkin
ca08161b54 lib/promscrape: typo fix 2020-09-12 00:14:15 +03:00
Aliaksandr Valialkin
e53235ac5c lib/promscrape: do not reset the remaining rows when pushing a part of data to remote storage during big scrapes 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/753

Thanks to @PerGon and @clmssz for help with debugging.
 2020-09-11 23:38:17 +03:00
Aliaksandr Valialkin
114cf24b43 lib/promscrape/discovery/dns: add __meta_dns_srv_record_target and __meta_dns_srv_record_port labels 
This syncs dns service discovery with Prometheus 2.21 - see https://github.com/prometheus/prometheus/releases
and https://github.com/prometheus/prometheus/pull/7678 .
 2020-09-11 21:35:39 +03:00
Nikolay Khramchikhin
af994562c8 Added endpointslices discovery to k8s api (#760) 
This is similar to https://github.com/prometheus/prometheus/pull/6838 , which will be added in Prometheus v2.21.
See https://github.com/prometheus/prometheus/releases/tag/v2.21.0-rc.1

* Added endpointslices discovery to k8s api

Started from 1.17 k8s version endpointslices is beta,
it allows to query k8s api for endpoints more efficient.
It presents at scrape_config.yaml as separate role for kubernetes_sd_config.
kubernetes_sd_config:
- role: endpointslices

* fixed typos, changed EndpointConditions signature - with values instead of pointers
 2020-09-11 12:24:50 +03:00
Aliaksandr Valialkin
95ce89e7d7 lib/promscrape: use the number of parsed rows as a basis for writeRequestCtxPool leveling 
The previous basis on `cap(sw.labels)` doesn't work anymore after 7785869ccc ,
because `sw.labels` may be reset multiple times when processing big number of rows.
 2020-09-02 18:46:55 +03:00
Aliaksandr Valialkin
a01c56104a lib/promscrape: fix applying sample_limit when scraping targets with big number of metrics 
This has been broken at 7785869ccc
 2020-09-01 11:09:25 +03:00
Aliaksandr Valialkin
deff8d419a lib/promscrape: reduce memory usage when scraping targets with millions of metrics 
This should help when scraping /federate endpoints from Prometheus instances,
which scrape millions of metrics. See https://prometheus.io/docs/prometheus/latest/federation/
 2020-09-01 10:55:24 +03:00
Aliaksandr Valialkin
5f2277624a lib/{promscrape,leveledbytebufferpool}: rename getPoolIdAndCapacity to getPoolIDAndCapacity in order to make golint happy 2020-08-28 09:49:22 +03:00
Aliaksandr Valialkin
9a77ae9d1c lib/promscrape: reduce memory usage when scraping targets with big number of metrics alongside targets with small number of labels 
Previously targets with big number of metrics and/or labels could generated too big buffers,
which then could be re-used when scraping targets with small number of metrics.
This resulted in memory waste.

Now big buffers are used only for targets with big number of metrics / labels,
while small buffers are used for targets with small number of metrics / labels.
 2020-08-16 22:30:34 +03:00
Aliaksandr Valialkin
6aab2f4989 all: allow using KB, MB, GB, KiB, MiB and GiB suffixes in command-line flag values related to byte sizes or byte rates 2020-08-16 17:08:28 +03:00
Aliaksandr Valialkin
9e67343756 lib/promscrape: use a hint on body length instead of body capacity 
This should reduce memory usage for https://github.com/VictoriaMetrics/VictoriaMetrics/issues/689
 2020-08-14 01:17:46 +03:00
Aliaksandr Valialkin
b4119bb51e lib/promscrape: reduce memory usage when scraping big number of targets 
Thanks to @dxtrzhang for the original idea at https://github.com/VictoriaMetrics/VictoriaMetrics/pull/688

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/689
 2020-08-14 01:05:04 +03:00
Aliaksandr Valialkin
1724cc241e lib/promscrape: properly retry requests on the server closed connection before returning the first response byte error during service discover API calls and target scrapes 2020-08-13 22:32:29 +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
e3439a6cd0 lib/promscrape: optimize per-metric hash calculations 
This increases vmagent performance by up to 10% when scraping big number of metrics
 2020-08-10 19:47:50 +03:00
Aliaksandr Valialkin
e3999ac010 lib/promscrape: show real timestamp and real duration for the scape on /targets page 
Previously the scrape duration may be negative when calculated scrape timestamp drifts away from the real scrape timestamp
 2020-08-10 12:40:49 +03:00
Aliaksandr Valialkin
c09c881264 lib/promscrape: make errcheck happy 2020-08-09 13:17:30 +03:00
Aliaksandr Valialkin
2dfb42a8b4 lib/promscrape: export scrape_samples_added per-target metric like Prometheus does 
This metric may be useful for detecting targets with high churn rate for the exported metrics.

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/683
 2020-08-09 12:45:30 +03:00
Aliaksandr Valialkin
d4be3efc60 lib/promscrape: add a test for scrape config for blackbox exporter 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/684
 2020-08-09 12:03:51 +03:00
Roman Khavronenko
a02097e657 Extend metric vm_promscrape_targets with status label (#615) 
The change to `vm_promscrape_targets` metric suppose to improve observability
for `vmagent` so it will be possible to track how many targets are up or down
for every specific scrape group:
```
vm_promscrape_targets{type="static_configs", status="down"} 1
vm_promscrape_targets{type="static_configs", status="up"} 2
```
 2020-07-13 21:54:53 +03:00
Aliaksandr Valialkin
87f8c728bf lib/promscrape: send Accept header similar to Prometheus when scraping targets 
This should fix scraping Spring Boot servers, which return incorrect response
unless `Accept: text/plain` request header is set.

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/608
 2020-07-08 19:50:06 +03:00
Aliaksandr Valialkin
6f1d926698 lib/promscrape: use HostClient.DoDeadline instead of HostClient.Do in order to guarantee strict deadline across multiple scrape attempts 2020-07-03 21:33:48 +03:00
Aliaksandr Valialkin
ee03b4ccbd lib/promscrape: prevent from too big deadline misses on scrape retries 
The maximum deadline miss duration is reduced to 2x scrape_interval in the worst case.
By default it is limited to scrape_interval configured for the given scrape target.
 2020-07-03 20:42:09 +03:00
Aliaksandr Valialkin
dfa83a4a35 lib/promscrape: check for nil error before checking for the returned status code when scraping targets 2020-07-03 18:37:25 +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
0f754bea49 lib/promscrape: add -promscrape.disableKeepAlive command-line flag for disabling http keep-alive connections when scraping targets 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/580
 2020-07-01 02:20:46 +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
5a43842bd3 lib/promscrape: add missing label sorting for autogenerated metrics 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/592
 2020-06-29 22:39:40 +03:00
Ween
b42cf33c4d Fix Auto metrics relabeled errors (#593) 
* Fix Auto metrics relabeled errors

* Finalize auto-genenated  Labels

* Fix Test Errors

Co-authored-by: xinyulong <xinyulong@kuaishou.com>
 2020-06-29 22:39:39 +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
a80e852aab lib/promscrape: retry performing the request to the server for up to 3 times before giving up when it closes keep-alive connections 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/580
 2020-06-23 12:34:12 +03:00
Aliaksandr Valialkin
50aa34bcbe lib/promscrape/discovery/consul: reduce load on Consul when discovering big number of targets by using background caching 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/574
 2020-06-20 18:20:07 +03:00
Aliaksandr Valialkin
62e1908986 lib/promscrape: reduce default value for -promscrape.discovery.concurrency from 500 to 100 
This should reduce load on Kubernetes API server and Consul when big number of targets are discovered

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/574
 2020-06-20 17:53:48 +03:00
Aliaksandr Valialkin
1f2826bae2 lib/promscrape/discovery/ec2: expose __meta_ec2_ami like the next Prometheus release will do 
See b5d61fb66c for details
 2020-06-20 17:45:30 +03:00
Aliaksandr Valialkin
2e5b6220a4 lib/promrelabel: allows regex capture groups in target_label like Prometheus does 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/569
 2020-06-19 02:20:58 +03:00
Aliaksandr Valialkin
b747362936 lib/promscrape: mention about -promscrape.maxScrapeSize in the error message when target returns too big response 2020-05-24 14:41:24 +03:00
Aliaksandr Valialkin
b59e089ac7 app/vmagent: add -dryRun option for checking all the configs mentioned in command-line flags without running vmagent 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/362
 2020-05-21 15:23:18 +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
73ec5cf460 lib/promscrape: add -promscrape.discovery.concurrency and -promscrape.discovery.concurrentWaitTime flags for tuning the number of concurrent requests to autodiscovery API servers at Consul or Kubernetes 2020-05-19 17:35:59 +03:00
Aliaksandr Valialkin
3845420a8f lib: extract common code for returning fast unix timestamp into lib/fasttime 2020-05-14 23:06:50 +03:00
Aliaksandr Valialkin
d54a93fc81 app/vmagent: fix scraping mTLS targets, which has been broken in v1.35.1 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/470
 2020-05-12 17:23:43 +03:00
Aliaksandr Valialkin
405cf44aed app/vmagent,lib/promscrape: do not set HostClient.DialDualStack, since it isnt used if HostClient.Dial is set 2020-05-12 15:24:53 +03:00
Aliaksandr Valialkin
9f39e618ed lib/promscrape/discovery/gce: discover per-zone instances for gce_sd_config in parallel. This should reduce discovery latency 2020-05-06 15:00:23 +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
42d563934b lib/promscrape: properly connect to TCP6 addresses if -enableTCP6 is set 2020-05-06 00:02:40 +03:00
Aliaksandr Valialkin
1c8e97c8a0 lib/procutil: add NewSighupChan function, which returns a channel, which is triggered on every SIGHUP 2020-05-05 10:56:15 +03:00
Aliaksandr Valialkin
054457d1f4 lib/promscrape: allow explicitly setting empty token via token: "" in consul_sd_config 2020-05-05 07:49:54 +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
ed91fe1d9b lib/promscrape: move common code for discovery api config map handling into discoveryutils 2020-05-04 20:52:58 +03:00
Aliaksandr Valialkin
c50fd219dc lib/promscrape/discovery/kubernetes/: unify apiConfig creation 2020-05-04 20:52:53 +03:00
Aliaksandr Valialkin
a5880f17af lib/promscrape: remove debug line left after the commit e4aac6ea40 2020-05-03 17:16:19 +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
ab1e6a76bb lib/promscrape: make consistent scrape time offsets across reloads for the same ScrapeURL and Labels 
This should make consistent intervals between data points for scrape targets across reloads.
Previously these intervals were random.
 2020-05-03 14:31:22 +03:00
Aliaksandr Valialkin
f25416984b lib/promscrape: fix TestGetFileSDScrapeWorkSuccess after 3b234d82e5 2020-05-03 14:31:20 +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
de5f923476 lib/promscrape: set 30 seconds timeout for discovery api requests 
Previously such requests could hang for long time. This could make debugging harder.
 2020-04-29 17:29:03 +03:00
Aliaksandr Valialkin
b6d88bac04 vendor: use github.com/VictoriaMetrics/fasthttp instead of github.com/fasthttp/fasthttp 
The upstream fasthttp may contain issues like 996610f021 ,
plus a code that isn't used by VictoriaMetrics. So let's use a private copy under our control instead.
 2020-04-29 16:43:09 +03:00
Aliaksandr Valialkin
53740d0026 lib/promscrape: handle connection reset when targets responds with http redirect 2020-04-28 02:14:32 +03:00
肖贝贝
3e6f29f462 fix: vmagent not follow 301/302 redirect bug (#445) 
Co-authored-by: xiaobeibei <xiaobeibei@bigo.sg>
 2020-04-28 02:14:31 +03:00
Aliaksandr Valialkin
424068f804 lib/promscrape: handle connection reset when targets responds with http redirect 2020-04-28 02:14:26 +03:00
肖贝贝
7d045bf2ca fix: vmagent not follow 301/302 redirect bug (#445) 
Co-authored-by: xiaobeibei <xiaobeibei@bigo.sg>
 2020-04-28 02:14:25 +03:00
Aliaksandr Valialkin
a603a15757 lib/promscrape/discovery/gce: make golangci-lint happy 2020-04-27 19:29:42 +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
1acb6eb25a lib/promscrape/discovery/gce: properly set filter query arg in api url 2020-04-27 16:01:53 +03:00
Aliaksandr Valialkin
0daa37fa02 lib/promscrape/discovery/gce: allow empty project and zone for gce_sd_config 2020-04-27 11:45:45 +03:00
Aliaksandr Valialkin
31861c5b8e lib/promscrape/discovery/gce: allow empty zone arg in gce_sd_config - in this case zones for the given project are automatically discovered 2020-04-26 14:37:38 +03:00
Aliaksandr Valialkin
7c74efd640 lib/promscrape/discovery/gce: make golint happy by ignoring resp.Body.Close() result 2020-04-24 18:13:26 +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
de991551f5 lib/promscrape: query /api/v1/namespaces/* for the configured namespaces in kubernetes_sd_config 
This should fix authroization issues described at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/432
 2020-04-24 14:42:02 +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
81481abaa9 lib/promscrape/discovery/kubernetes: reuse a client for empty api_server inside different jobs 2020-04-20 17:07:37 +03:00
Aliaksandr Valialkin
6764efde39 lib/promscrape/discovery/kubernetes: update stale comments 2020-04-17 14:06:26 +03:00
Aliaksandr Valialkin
d86640d609 lib/promscrape: suppress scrape errors if -promscrape.suppressScrapeErrors flag is set 2020-04-16 23:41:52 +03:00
Aliaksandr Valialkin
70104f3fb1 lib/promscrape: print all the labels for the target on error message for failed scrape 
This should improve debuggability.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/420
 2020-04-16 23:35:10 +03:00
Aliaksandr Valialkin
266bbec52d lib/promscrape: retry target scraping when the target closes previously established keep-alive connection to it 
This should fix the following error:

the server closed connection before returning the first response byte. Make sure the server returns 'Connection: close' response header before closing the connection
 2020-04-16 23:25:34 +03:00
Aliaksandr Valialkin
99f0cb1f5f lib/promscrape: code cleanup in runScraper func 2020-04-15 11:36:35 +03:00
Aliaksandr Valialkin
6ec582acb9 lib/promscrape: show information on improperly configured scrape targets at the bottom of /targets page 
This is a common error whith improperly configured target autodiscovery and/or relabeling.
This error leads to duplicate scraping of the same targets with the same set of labels, which leads
to duplicate samples in time series.
 2020-04-14 14:55:13 +03:00
Aliaksandr Valialkin
391fb0903e lib/promscrape/discovery/kubernetes: remove only unused client for API server during cleaning 2020-04-14 14:19:26 +03:00
Aliaksandr Valialkin
636e1578de lib/promscrape: add promrelabel.GetLabelValueByName helper function 2020-04-14 14:12:15 +03:00
Aliaksandr Valialkin
3945bf9dec lib/promscrape: mention job name in error messages when target cannot be scraped 
This should improve debuggability
 2020-04-14 13:33:18 +03:00
Aliaksandr Valialkin
66da177fe9 lib/promscrape: reset ScrapeWork.ID in tests 2020-04-14 13:31:37 +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
c189104be7 lib/promscrape: reduce timestamp jitter when scraping targets 
This should improve compression for timestamps
 2020-04-01 16:13:01 +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
375d5483fa lib/promscrape: remove possible races when registering and de-registering scrape workers for /targets page 2020-03-11 16:30:43 +02:00
Aliaksandr Valialkin
187fd89c70 lib/promscrape: consistently update /targets page after SIGHUP 2020-03-11 03:20:38 +02:00
Aliaksandr Valialkin
7545784a49 all: fix golangci-lint issues 2020-03-10 19:40:03 +02:00
Aliaksandr Valialkin
d39dd8aa69 lib/promscrape: do not retry idempotent requests when scraping targets 
This should prevent from the following unexpected side-effects of idempotent request retries:
- increased actual timeout when scraping the target comparing to the configured scrape_timeout
- increased load on the target

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/357
 2020-03-09 13:31:20 +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
31a76a7b3a lib/promscrape: consistency renaming: stopCh -> globalStopCh 2020-03-03 20:08:22 +02:00
Aliaksandr Valialkin
e6a481ab11 lib/promscrape: properly reload new configs on SIGHUP 2020-02-26 13:54:24 +02:00
Aliaksandr Valialkin
fa6815712f lib/promscrape: go fmt 2020-02-26 13:24:40 +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