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242 commits

Author SHA1 Message Date
Aliaksandr Valialkin
894246176f lib/promscrape/discovery/kubernetes: do not start object watcher until initial objects are loaded 2021-03-14 21:56:16 +02:00
Aliaksandr Valialkin
9e55db4a53 lib/promscrape: retry service discovery in a few seconds if it starts returning 0 targets 
This should reduce recovery time from temporary issues during service discovery
 2021-03-14 21:56:16 +02:00
Aliaksandr Valialkin
3b46ae1c05 lib/promscrape: remove duplicate target word in error message 2021-03-14 21:56:16 +02:00
Aliaksandr Valialkin
b0b28eeb93 lib/promscrape/discovery/kubernetes: further optimize kubernetes service discovery for the case with many scrape jobs 
Do not re-calculate labels per each scrape job - reuse them instead for scrape jobs with identical Kubernetes role
 2021-03-14 21:16:41 +02:00
Aliaksandr Valialkin
620f05cd2c lib/promscrape/discovery: fixes after 133b288681 
- Removed a deadlock in addAPIWatcher
- Do not create unused ScrapeWork objects
- Do not spend CPU resources on creating objectByKey map in addAPIWatcher

This work is based on https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1125
 2021-03-13 15:22:38 +02:00
Aliaksandr Valialkin
60e0280a94 lib/promscrape: add ability to configure proxy options via proxy_tls_config, proxy_basic_auth, proxy_bearer_token and proxy_bearer_token_file 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1116
 2021-03-12 03:36:11 +02:00
Aliaksandr Valialkin
8fc29ffc67 lib/promscrape/discovery/kubernetes: use a single watcher per apiURL 
Previously multiple scrape jobs could create multiple watchers for the same apiURL. Now only a single watcher is used.
This should reduce load on Kubernetes API server when many scrape job configs use Kubernetes service discovery.
 2021-03-11 17:04:14 +02:00
Aliaksandr Valialkin
41f641b132 lib/promscrape/discovery/kubernetes: localize Bookmark parsing code 
This is a follow-up for e772d1c920
 2021-03-11 13:08:56 +02:00
Aliaksandr Valialkin
6c9cd3f7c1 lib/promscrape/discovery/kubernetes: reduce load on Kubernetes API server by using watch bookmarks 
This allows continuing object watch from the last bookbark instead of reloading all the objects
on watch errors or timeouts.

See https://kubernetes.io/docs/reference/using-api/api-concepts/#watch-bookmarks
 2021-03-10 15:08:40 +02:00
Aliaksandr Valialkin
9d8223eafb lib/proxy: set missing ServerName in TLS config for proxy_url. 
While at it, allow setting Proxy-Authorization for `proxy_url` via `basic_auth` and `bearer_token` configs.
 2021-03-09 19:01:14 +02:00
Nikolay
1310f84122 Changes tlsConfig init for proxy connections (#1121) 
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1116
 2021-03-09 19:01:13 +02:00
Aliaksandr Valialkin
0554430d7e lib/promscrape: apply sample_limit after metric relabeling is applied as Prometheus does 
See the description for `sample_limit` option from Prometheus docs:

Per-scrape limit on number of scraped samples that will be accepted.
If more than this number of samples are present after metric relabeling
the entire scrape will be treated as failed. 0 means no limit.

https://prometheus.io/docs/prometheus/latest/configuration/configuration/#scrape_config
 2021-03-09 15:52:41 +02:00
Aliaksandr Valialkin
7b66c8cbf8 lib/promscrape/discovery/kubernetes: remove too verbose logs about starting and stopping the watchers 
Log the number of objects loaded per each watch url

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1113
 2021-03-09 15:07:12 +02:00
Aliaksandr Valialkin
502fab797a lib/promscrape: add scrape_offset option to scrape_config 
This option can be used for specifying the particular offset per each scrape interval for target scraping
 2021-03-08 11:59:32 +02:00
Aliaksandr Valialkin
c04505e585 lib/promscrape/discovery/kubernetes: reduce memory usage further when big number of scrape jobs are configured for the same kubernetes_sd_config role 
Serialize reloading per-role objects, so they don't occupy too much memory when objects for many scrape jobs are simultaneously refreshed.
Do not reload per-role objects if they were already refreshed by concurrent goroutines. This should reduce load on Kubernetes API server
when big number of scrape jobs are configured for the same Kubernetes role.

This is a follow-up for 17b87725ed

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1113
 2021-03-07 20:03:22 +02:00
Aliaksandr Valialkin
5807ff57f3 lib/promscrape/discovery/kubernetes: reduce memory usage when Kubernetes service discovery is configured on a big number of scrape jobs 
Previously vmagent was creating a separate Kubernetes object cache per each scrape job.
This could result in increased memory usage when monitoring a Kubernetes cluster with big number of objects (pods / nodes / services, etc.)
as seen at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1113

Now it uses a shared map of scrape objects across multiple scrape jobs.
 2021-03-05 17:32:33 +02:00
Aliaksandr Valialkin
92ddb8f197 lib/promscrape/discovery/kubernetes: move apiWatcher code to a separate file 2021-03-05 17:32:32 +02:00
Aliaksandr Valialkin
02c0959380 lib/promscrape: make cluster membership calculations consistent across 32-bit and 64-bit architectures 2021-03-05 09:06:08 +02:00
Aliaksandr Valialkin
133fb9fc00 lib/promscrape: add -promscrape.cluster.replicationFactor command-line flag for replicating scrape targets among vmagent instances in the cluster 2021-03-04 10:21:27 +02:00
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