VictoriaMetrics/VictoriaMetrics v1.56.0 on GitHub

Changes

FEATURE: add the following functions to MetricsQL:
- histogram_avg(buckets) - returns the average value for the given buckets.
- histogram_stdvar(buckets) - returns standard variance for the given buckets.
- histogram_stddev(buckets) - returns standard deviation for the given buckets.
FEATURE: export vm_available_memory_bytes and vm_available_cpu_cores metrics, which show the number of available RAM and available CPU cores for VictoriaMetrics apps.
FEATURE: export vm_index_search_duration_seconds histogram, which can be used for troubleshooting time series search performance.
FEATURE: vmagent: add ability to replicate scrape targets among vmagent instances in the cluster with -promscrape.cluster.replicationFactor command-line flag. See these docs.
FEATURE: vmagent: accept scrape_offset option at scrape_config. This option may be useful when scrapes must start at the specified offset of every scrape interval. See these docs for details.
FEATURE: vmagent: support proxy_tls_config, proxy_basic_auth, proxy_bearer_token and proxy_bearer_token_file options at scrape_config section for configuring proxies specified via proxy_url. See these docs.
FEATURE: vmauth: allow using regexp paths in url_map. See this issue for details.
FEATURE: accept round_digits query arg at /api/v1/query and /api/v1/query_range handlers. This option can be set at Prometheus datasource in Grafana for limiting the number of digits after the decimal point in response values.
FEATURE: add -influx.databaseNames command-line flag, which can be used for accepting data from some Telegraf plugins such as fluentd plugin. See this issue.
FEATURE: add -logNewSeries command-line flag, which can be used for debugging the source of time series churn rate.
FEATURE: publish Windows builds for vmagent, vmalert, vmauth and vmctl at vmutils-windows-*.zip archives at releases page.
FEATURE: listen for IPv6 UDP if -enableTCP6 command-line flag is passed to VictoriaMetrics. See this issue.
BUGFIX: vmagent: prevent from high CPU usage bug during failing scrapes with small scrape_timeout (less than a few seconds).
BUGFIX: vmagent: reduce memory usage when Kubernetes service discovery is used in big number of distinct scrape config jobs by sharing Kubernetes object cache. See #1113
BUGFIX: vmagent: apply sample_limit only after metric_relabel_configs are applied as Prometheus does. Previously the sample_limit was applied before metrics relabeling.
BUGFIX: vmagent: properly apply tls_config, basic_auth and bearer_token to proxy connections if proxy_url option is set. See #1116
BUGFIX: vmagent: properly scrape targets via https proxy specified in proxy_url if insecure_skip_verify flag isn't set in tls_config section. See #1116
BUGFUX: avoid duplicate time series error if prometheus_buckets() covers a time range with distinct set of buckets.
BUGFIX: prevent exponent overflow when processing extremely small values close to zero such as 2.964393875E-314. See #1114
BUGFIX: do not include datapoints with a timestamp t-d when returning results from /api/v1/query?query=m[d]&time=t as Prometheus does.
BUGFIX: do not crash if a query contains histogram_over_time() function name with uppercase chars. For example, Histogram_Over_Time(m[5m]).

How to run VictoriaMetrics

Unpack the victoria-metrics-*.tar.gz archive and read these docs.

vmutils-*.tag.gz archive contains the following tools:

The corresponding docker images are available here.
Cluster version is available here.