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834 commits

Author SHA1 Message Date
faceair
b638c1eed5
lib/mergeset: add missing shouldCacheBlock (#1019) 2021-01-15 11:46:01 +02:00
Aliaksandr Valialkin
bdd0a1cdb2 lib/backup: increase backup chunk size from 128MB to 1GB 
This should reduce costs for object storage API calls by 8x. See https://cloud.google.com/storage/pricing#operations-pricing
 2021-01-13 12:16:35 +02:00
Nikolay
7bf5d48315
bumps minimal tls version (#1012) 2021-01-13 00:35:47 +02:00
Aliaksandr Valialkin
31ec79eaf6 lib/storage: inline marshalTags function and remove the code for handling duplicate tags from here 
This is a follow-up commit after c8ea697db8
 2021-01-12 15:13:30 +02:00
Aliaksandr Valialkin
c8ea697db8 lib/storage: de-duplicate tags in MetricName.sortTags 
Leave only the last tag among tags with duplicate keys. This is needed for reliable addition of extra_labels
during data ingestion. See https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1007 for details.
 2021-01-12 15:03:42 +02:00
Nikolay
7976c22797
Fixes error handling for promscrape.streamParse (#1009) 
properly return error if client cannot read data,
properly suppress scraper errors
 2021-01-12 13:31:47 +02:00
Aliaksandr Valialkin
2c44f9989a lib/promscrape: properly show scrape duration on /targets page 
Previously it has been shown as 0.000s for any scrape duration.
 2021-01-11 21:14:46 +02:00
Aliaksandr Valialkin
24ffad74c1 all: use net.Dial instead of fasthttp.Dial, because fasthttp.Dial limits the number of concurrent dials to 1000 2021-01-11 12:53:30 +02:00
Aliaksandr Valialkin
9dcb18e03d app/vmstorage: disable final merge by default, since it may result in high disk IO and CPU usage without measurable benefits such as increased query performance and reduced disk space usage 2021-01-08 00:16:05 +02:00
Aliaksandr Valialkin
490c69c64e lib/storage: wait for pending transactions before closing and dropping the partition 
This deflakes `make test-full-386` test
 2020-12-25 11:45:53 +02:00
Aliaksandr Valialkin
cab7e936a3 lib/storage: physically remove stale parts 
Previously they were removed from partition struct, but the corresponding directories weren't removed.

This is a follow-up for 46dba00756
 2020-12-24 16:51:36 +02:00
Nikolay
b21e16ad0c
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 11:26:14 +02:00
Aliaksandr Valialkin
820669da69 lib/promscrape: code prettifying for 8dd03ecf19 2020-12-24 10:56:10 +02:00
Nikolay
8dd03ecf19
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 10:52:37 +02:00
Aliaksandr Valialkin
9e4ed5e591 lib/storage: do not remove parts outside the configured retention if they are currently merged 
These parts are automatically removed after the merge is complete.
 2020-12-24 08:51:28 +02:00
Aliaksandr Valialkin
46dba00756 lib/storage: remove stale parts as soon as they go outside the configured retention 
Previously such parts could remain undeleted for long durations until they are merged with other parts.
This should help for `-retentionPeriod` values smaller than one month.
 2020-12-22 19:54:31 +02:00
Aliaksandr Valialkin
d65c03c004 lib/storage: properly determine max rows for output part when merging small parts 2020-12-18 23:14:38 +02:00
Aliaksandr Valialkin
ebf8da3730 lib/{storage,mergeset}: tune background merge process in order to reduce CPU usage and disk IO usage 2020-12-18 20:01:08 +02:00
Aliaksandr Valialkin
2dfa746c91 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 14:32:56 +02:00
Aliaksandr Valialkin
9abb2d6c74 lib/protoparser/prometheus: follow-up commit after 7d38627b9f6f212ae602aea6a72f469fe3c70ba2 
Document the bugfix in docs/CHANGELOG.md and add a test for the bugfix.
 2020-12-16 23:40:17 +02:00
BigFish
27f0261257
lib/protoparser/prometheus/parser.go (#970) 
fix parse timestamp error if there are some whitespaces after timestamp
 2020-12-16 23:36:20 +02:00
Aliaksandr Valialkin
a4c7fcb5e1 lib/promscrape: properly remove deleted target from /targets page 
Previously `sw` variable wasn't captured correctly by the started goroutine.
 2020-12-15 20:57:09 +02:00
Aliaksandr Valialkin
b730fc2667 lib/promscrape: properly handle scrape errors when stream parsing is enabled 
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/967
 2020-12-15 14:08:28 +02:00
Nikolay
95c9b630cc
adds new Array Flags (#965) 
* adds ArrayDuration and ArrayBool flags,
makes sendTimeout and tlsInsecure configurable per remoteWrite url

* added backward compatibility testcases for ArrayDuration and ArrayBool

* fixes bool flag

* fixes test cases
 2020-12-15 12:51:12 +02:00
Aliaksandr Valialkin
60fcac4878 lib/promscrape: add bootstrap styles to /targets html page 2020-12-15 12:37:56 +02:00
Aliaksandr Valialkin
5af2a9ca0e lib/promscrape: formatting fixes for /tarets page 2020-12-15 11:59:04 +02:00
Aliaksandr Valialkin
020917949b lib/promscrape: formatting fixes for /targets page 2020-12-15 11:24:18 +02:00
Aliaksandr Valialkin
d006b41eff lib/persistentqueue: verify that ReaderOffset doesnt exceed WriterOffset when opening the persistent queue 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/964
 2020-12-14 19:25:25 +02:00
Aliaksandr Valialkin
ae972429c7 lib/promscrape: add missing whitespace between duration and ago word at /targets page 2020-12-14 14:19:58 +02:00
Aliaksandr Valialkin
069c9ade52 app/{vmagent,vminsert}: follow-up for ce8c2dd1f1: return /targets page in HTML when requested via web browser 2020-12-14 14:06:00 +02:00
Nikolay
ce8c2dd1f1
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 13:36:48 +02:00
Aliaksandr Valialkin
5f9d88a3cb 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 17:24:13 +02:00
Aliaksandr Valialkin
fd9fd191b9 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 21:52:42 +02:00
Aliaksandr Valialkin
4146fc4668 all: properly handle CPU limits set on the host system/container 
This can reduce memory usage on systems with enabled CPU limits.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/946
 2020-12-08 21:07:29 +02:00
Aliaksandr Valialkin
364f30a6e7 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 17:50:05 +02:00
Aliaksandr Valialkin
08b71d2067 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 12:22:59 +02:00
Aliaksandr Valialkin
0f1b969aa6 lib/promscrape: export vm_promscrape_scrapers_{started|stopped}_total metrics for monitoring target churn rate 2020-12-08 11:57:52 +02:00
Aliaksandr Valialkin
c7ac7c1807 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 11:50:48 +02:00
Aliaksandr Valialkin
05813259dc 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 01:54:23 +02:00
Aliaksandr Valialkin
9c1c9d8e76 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 13:18:50 +02:00
Aliaksandr Valialkin
82972a8f2a lib/promscrape: mention in scrape error message that scrape errors can be disabled by -promscrape.suppressScrapeErrors command-line flag 2020-12-06 23:27:58 +02:00
Aliaksandr Valialkin
299a35948c lib/promscrape: clarify error message on failed connection to scrape target when -enableTCP6 command-line flag isn't set 2020-12-06 13:18:39 +02:00
Aliaksandr Valialkin
b0e4b234cb lib/protoparser/influx: allow multiple whitespace chars between measurement, fields and timestamp in Influx line protocol 2020-12-06 12:01:27 +02:00
Aliaksandr Valialkin
52915c8f7e 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 12:15:52 +02:00
Aliaksandr Valialkin
eb27dbde13 lib/flagutil: make golangci-lint happy by using strings.TrimPrefix instead of manual prefix removal via strings.HasPrefix 2020-12-03 22:07:57 +02:00
Aliaksandr Valialkin
9d787f9edd all: do not print usage info for all the flags when incorrect command-line flag is passed 
This should improve usability for VictoriaMetrics apps that have big number of command-line flags,
i.e. all the apps.
 2020-12-03 21:47:37 +02:00
Aliaksandr Valialkin
de0643fab5 lib/promscrape/discovery/consul: log the time needed for stoppig Consul service watcher 2020-12-03 20:14:55 +02:00
Aliaksandr Valialkin
9cd8eb92f1 lib/promscrape/discovery/consul: make sure that block response contains X-Consul-Index header 2020-12-03 20:05:23 +02:00
Aliaksandr Valialkin
5009b25a03 lib/promscrape: code cleanup after c6dee6c52d 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/574
 2020-12-03 19:50:53 +02:00
Nikolay
c6dee6c52d
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 19:47:40 +02:00
Aliaksandr Valialkin
357f886f97 Revert "lib/storage: add missing (AccountID, ProjectID) in MetricName.String() test" 
This reverts commit f3e80eb70e493620e42a0cc22a62c9af75076c77, since it isn't needed for single-node version of VictoriaMetrics
 2020-11-29 01:27:25 +02:00
Aliaksandr Valialkin
ace969d595 lib/storage: add missing (AccountID, ProjectID) in MetricName.String() test 2020-11-29 01:26:04 +02:00
Aliaksandr Valialkin
32869e4c0f lib/promscrape: fix failing tests after a906b3862f 2020-11-29 01:26:03 +02:00
Aliaksandr Valialkin
a906b3862f lib/protoparser/prometheus: properly parse OpenMetrics timestamps 
OpenMetrics timestamps are floating-point numbers, that represent Unix timestamp in seconds.
This differs from Prometheus exposition format, where timestamps are integer numbers representing Unix timestamp in milliseconds.
 2020-11-27 14:54:29 +02:00
Aliaksandr Valialkin
3a32789352 lib/promscrape: reduce memory allocations when unpacking gzipped responses received from scrape targets 2020-11-26 18:32:06 +02:00
Aliaksandr Valialkin
2cea4d403f all: typo fix: thouthand->thousand 2020-11-26 13:33:46 +02:00
Aliaksandr Valialkin
b0a5c382ee lib/promscrape: release http response non-200 status code 2020-11-26 13:25:17 +02:00
Aliaksandr Valialkin
b7fcdb528d app/{vmagent,victoria-metrics}: add -dryRun option and make more clear handling for -promscrape.config.dryRun 2020-11-25 22:59:13 +02:00
Aliaksandr Valialkin
1c669a69a8 lib/mergeset: tune the number of rawItemsBlocks to merge at once 
512 blocks give higher ingestion performance and slightly lower memory usage
 2020-11-25 21:52:52 +02:00
Aliaksandr Valialkin
7119f294f3 lib/mergeset: help GC by removing refereces to slices in inmemoryBlock.Reset 2020-11-25 21:19:43 +02:00
Aliaksandr Valialkin
8a057e705a lib/storage: log metric name plus all its labels when the metric timestamp is outside the configured retention 
This should simplify debugging when the source of the metric with unexpected timestamp must be found.
 2020-11-25 14:41:37 +02:00
Aliaksandr Valialkin
b65236530c lib/storage: typo fix in error message: allowd->allowed 2020-11-25 14:15:42 +02:00
Aliaksandr Valialkin
ae04378424 lib/protoparser/prometheus: properly parse "infinity" values in OpenMetrics format 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/924
 2020-11-24 19:03:38 +02:00
Aliaksandr Valialkin
bf95fbfc1d lib/logger: disable rate limiting for error and warn logs by default 2020-11-24 12:42:25 +02:00
Aliaksandr Valialkin
78d2715d04 all: spelling fix: superflouos->superfluous. This is a follow-up for 0acdab3ab9 2020-11-24 12:42:22 +02:00
Aliaksandr Valialkin
b7f4fc6e0d lib/protoparser/prometheus: properly parse metrics with exemplars 
Examplars have been introduced in OpenMetrics - see https://github.com/OpenObservability/OpenMetrics/blob/master/OpenMetrics.md#exemplars-1
Previously VictoriaMetrics couldn't parse the following metric

    foo{bar="baz"} 123 # exemplar here

This commit fixes this. Note that VictoriaMetrics ignores the exemplar as for now.
 2020-11-24 12:34:56 +02:00
Aliaksandr Valialkin
aa90b93778 lib/promscrape: expose __meta_ec2_ipv6_addresses label for ec2_sd_config like Prometheus will do in the next release 2020-11-23 16:56:42 +02:00
Aliaksandr Valialkin
de523c81b9 lib/promscrape: add filters option to dockerswarm_sd_config like Prometheus did in v2.23.0 2020-11-23 16:27:40 +02:00
Aliaksandr Valialkin
f765985947 lib/fs: replace fs.OpenReaderAt with fs.MustOpenReaderAt 
All the callers for fs.OpenReaderAt expect that the file will be opened.
So it is better to log fatal error inside fs.MustOpenReaderAt instead of leaving this to the caller.
 2020-11-23 09:57:21 +02:00
Aliaksandr Valialkin
9d160f9048 lib/promscrape: hint that -enableTCP6 command-line flag can be used for connecting to IPv6 addresses 2020-11-21 14:39:00 +02:00
Aliaksandr Valialkin
d7932775cc lib/promscrape/discovery/eureka: follow-up after eec76718e9 2020-11-20 14:00:12 +02:00
Nikolay
eec76718e9
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 13:38:12 +02:00
Aliaksandr Valialkin
97a0c80904 lib/logger: follow-up for 09105ff49c 2020-11-19 12:37:00 +02:00
Nikolay
09105ff49c
Adds log suppression per caller (#908) 
* Adds log suppression per caller
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/905

* fixes style and report message
 2020-11-19 12:17:23 +02:00
Aliaksandr Valialkin
a6b2b2c005 lib/logger: add -loggerWarnsPerSecondLimit command-line flag for rate limiting of WARN log messages 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/905
 2020-11-18 03:43:37 +02:00
Aliaksandr Valialkin
266788be14 app/vmselect: use storage.NewSearchQuery() instead of constructing storage.SearchQuery in-place 
This should prevent from bugs when AccountID and ProjectID aren't set in storage.SearchQuery.
 2020-11-16 18:24:00 +02:00
Aliaksandr Valialkin
0208d8c103 lib/storage: add a test for Storage.SearchMetricNames 2020-11-16 13:15:16 +02:00
Aliaksandr Valialkin
465923b181 app/vmselect/graphite: add /tags/findSeries handler from Graphite Tags API 
See https://graphite.readthedocs.io/en/stable/tags.html#exploring-tags
 2020-11-16 12:53:13 +02:00
Aliaksandr Valialkin
48d033a198 app/vminsert: add /tags/tagSeries and /tags/tagMultiSeries handlers from Graphite Tags API 
See https://graphite.readthedocs.io/en/stable/tags.html#adding-series-to-the-tagdb
 2020-11-16 02:39:58 +02:00
Aliaksandr Valialkin
4aaee33860 lib/storage: do not show artifically created label for reverse Graphite labels at /api/v1/labels page 2020-11-16 00:44:35 +02:00
Aliaksandr Valialkin
0deabbbb4a lib/protoparser/promremotewrite: log the time spent on unsuccessful data read from the network 
This should help with debugging `connection timed out` errors.
 2020-11-13 17:49:12 +02:00
Vasily
6fcbd17bdd 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 16:19:05 +02:00
Aliaksandr Valialkin
cdf1e6684b lib/protoparser/opentsdbhttp: increment errors counter on unmarshal errors 
This is a follow-up for 149c0c4a6d
 2020-11-13 13:23:17 +02:00
Aliaksandr Valialkin
149c0c4a6d lib/protoparser: propagate callback error to the caller of ParseStream for every supported data ingestion protocols 
The caller of ParseStream then can generate HTTP 503 responses for non-nil errors occured in callbacks when processing incoming requests.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/896
 2020-11-13 13:05:24 +02:00
Aliaksandr Valialkin
4f8a3af061 lib/protoparser/promremotewrite: synchronously process Prometheus remote_write requests 
There is no reason in processing these requests asynchronously in the face of https://github.com/VictoriaMetrics/VictoriaMetrics/issues/896
Synchronous processing code is easier to read and understand than the previous async code
 2020-11-13 12:17:25 +02:00
Aliaksandr Valialkin
57a4af98fa lib/protoparser/promremotewrite: forward errors, which can occur during data ingestion, to the caller of ParseStream, so it could properly return HTTP 503 status code on non-nil error 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/896
 2020-11-13 11:01:07 +02:00
Aliaksandr Valialkin
47a038401b all: consistently return text-based HTTP responses with charset=utf-8 
This is a follow-up for https://github.com/VictoriaMetrics/VictoriaMetrics/pull/897
 2020-11-13 10:35:41 +02:00
immerrr again
51c529a2b6
app/vmstorage: add "/internal/force_flush" endpoint (#893) 2020-11-11 14:40:27 +02:00
Aliaksandr Valialkin
e205975716 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 16:13:05 +02:00
Aliaksandr Valialkin
6e668fd480 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 15:56:51 +02:00
Aliaksandr Valialkin
bcd139362b 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 00:19:57 +02:00
Aliaksandr Valialkin
6c24c5caa3 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 10:54:42 +02:00
Aliaksandr Valialkin
83df20b5b5 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 16:19:59 +02:00
Aliaksandr Valialkin
9e83335ca9 lib/promscrape/discovery/kubernetes: go fmt 2020-11-07 13:03:49 +02:00
Aliaksandr Valialkin
5407eed2f6 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 13:03:08 +02:00
Aliaksandr Valialkin
188325f0fc 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 12:45:17 +02:00
Aliaksandr Valialkin
368b69b4c4 app/vmselect: properly handle errors in GetLabelsOnTimeRange and GetLabelValuesOnTimeRange 2020-11-05 01:38:38 +02:00
Aliaksandr Valialkin
1cb78ba1a0 lib/storage: remove data race when updating rowsDeleted 2020-11-05 01:12:21 +02:00
Aliaksandr Valialkin
b378cd6ed8 app/vmselect: optimize querying for /api/v1/labels and /api/v1/label/<name>/values when start and end args are set 2020-11-05 01:01:33 +02:00
Nikolay
4c808d58bf
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 20:29:18 +02:00