# vmgateway ***vmgateway is a part of [enterprise package](https://docs.victoriametrics.com/enterprise.html). It is available for download and evaluation at [releases page](https://github.com/VictoriaMetrics/VictoriaMetrics/releases)*** vmgateway `vmgateway` is a proxy for the VictoriaMetrics Time Series Database (TSDB). It provides the following features: * Rate Limiter * Based on cluster tenant's utilization, it supports multiple time interval limits for both the ingestion and retrieval of metrics * Token Access Control * Supports additional per-label access control for both the Single and Cluster versions of the VictoriaMetrics TSDB * Provides access by tenantID in the Cluster version * Allows for separate write/read/admin access to data `vmgateway` is included in our [enterprise packages](https://docs.victoriametrics.com/enterprise.html). ## Access Control vmgateway-ac `vmgateway` supports jwt based authentication. With jwt payload can be configured to give access to specific tenants and labels as well as to read/write. jwt token must be in following format: ```json { "exp": 1617304574, "vm_access": { "tenant_id": { "account_id": 1, "project_id": 5 }, "extra_labels": { "team": "dev", "project": "mobile" }, "extra_filters": ["{env=~\"prod|dev\",team!=\"test\"}"], "mode": 1 } } ``` Where: * `exp` - required, expire time in unix_timestamp. If the token expires then `vmgateway` rejects the request. * `vm_access` - required, dict with claim info, minimum form: `{"vm_access": {"tenand_id": {}}` * `tenant_id` - optional, for cluster mode, routes requests to the corresponding tenant. * `extra_labels` - optional, key-value pairs for label filters added to the ingested or selected metrics. Multiple filters are added with `and` operation. If defined, `extra_label` from original request removed. * `extra_filters` - optional, [series selectors](https://prometheus.io/docs/prometheus/latest/querying/basics/#time-series-selectors) added to the select query requests. Multiple selectors are added with `or` operation. If defined, `extra_filter` from original request removed. * `mode` - optional, access mode for api - read, write, or full. Supported values: 0 - full (default value), 1 - read, 2 - write. ## QuickStart Start the single version of VictoriaMetrics ```console # single # start node ./bin/victoria-metrics --selfScrapeInterval=10s ``` Start vmgateway ```console ./bin/vmgateway -eula -enable.auth -read.url http://localhost:8428 --write.url http://localhost:8428 ``` Retrieve data from the database ```console curl 'http://localhost:8431/api/v1/series/count' -H 'Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ2bV9hY2Nlc3MiOnsidGVuYW50X2lkIjp7fSwicm9sZSI6MX0sImV4cCI6MTkzOTM0NjIxMH0.5WUxEfdcV9hKo4CtQdtuZYOGpGXWwaqM9VuVivMMrVg' ``` A request with an incorrect token or without any token will be rejected: ```console curl 'http://localhost:8431/api/v1/series/count' curl 'http://localhost:8431/api/v1/series/count' -H 'Authorization: Bearer incorrect-token' ``` ## Rate Limiter vmgateway-rl Limits incoming requests by given, pre-configured limits. It supports read and write limiting by tenant. `vmgateway` needs a datasource for rate limit queries. It can be either single-node or cluster version of `victoria-metrics`. The metrics that you want to rate limit must be scraped from the cluster. List of supported limit types: * `queries` - count of api requests made at tenant to read the api, such as `/api/v1/query`, `/api/v1/series` and others. * `active_series` - count of current active series at any given tenant. * `new_series` - count of created series; aka churn rate * `rows_inserted` - count of inserted rows per tenant. List of supported time windows: * `minute` * `hour` Limits can be specified per tenant or at a global level if you omit `project_id` and `account_id`. Example of configuration file: ```yaml limits: - type: queries value: 1000 resolution: minute - type: queries value: 10000 resolution: hour - type: queries value: 10 resolution: minute project_id: 5 account_id: 1 ``` ## QuickStart cluster version of VictoriaMetrics is required for rate limiting. ```console # start datasource for cluster metrics cat << EOF > cluster.yaml scrape_configs: - job_name: cluster scrape_interval: 5s static_configs: - targets: ['127.0.0.1:8481','127.0.0.1:8482','127.0.0.1:8480'] EOF ./bin/victoria-metrics --promscrape.config cluster.yaml # start cluster # start vmstorage, vmselect and vminsert ./bin/vmstorage -eula ./bin/vmselect -eula -storageNode 127.0.0.1:8401 ./bin/vminsert -eula -storageNode 127.0.0.1:8400 # create base rate limitng config: cat << EOF > limit.yaml limits: - type: queries value: 100 - type: rows_inserted value: 100000 - type: new_series value: 1000 - type: active_series value: 100000 - type: queries value: 1 account_id: 15 EOF # start gateway with clusterMoe ./bin/vmgateway -eula -enable.rateLimit -ratelimit.config limit.yaml -datasource.url http://localhost:8428 -enable.auth -clusterMode -write.url=http://localhost:8480 --read.url=http://localhost:8481 # ingest simple metric to tenant 1:5 curl 'http://localhost:8431/api/v1/import/prometheus' -X POST -d 'foo{bar="baz1"} 123' -H 'Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE2MjAxNjIwMDAwMDAsInZtX2FjY2VzcyI6eyJ0ZW5hbnRfaWQiOnsiYWNjb3VudF9pZCI6MTV9fX0.PB1_KXDKPUp-40pxOGk6lt_jt9Yq80PIMpWVJqSForQ' # read metric from tenant 1:5 curl 'http://localhost:8431/api/v1/labels' -H 'Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE2MjAxNjIwMDAwMDAsInZtX2FjY2VzcyI6eyJ0ZW5hbnRfaWQiOnsiYWNjb3VudF9pZCI6MTV9fX0.PB1_KXDKPUp-40pxOGk6lt_jt9Yq80PIMpWVJqSForQ' # check rate limit ``` ## JWT signature verification `vmgateway` supports JWT signature verification. Supported algorithms are `RS256`, `RS384`, `RS512`, `ES256`, `ES384`, `ES512`, `PS256`, `PS384`, `PS512`. Tokens with unsupported algorithms will be rejected. In order to enable JWT signature verification, you need to specify keys for signature verification. The following flags are used to specify keys: - `-auth.publicKeyFiles` - allows to pass file path to file with public key. - `-auth.publicKeys` - allows to pass public key directly. Note that both flags support passing multiple keys and also can be used together. Example usage: ```console ./bin/vmgateway -eula \ -enable.auth \ -write.url=http://localhost:8480 \ -read.url=http://localhost:8481 \ -auth.publicKeyFiles=public_key.pem \ -auth.publicKeyFiles=public_key2.pem \ -auth.publicKeys=`-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu1SU1LfVLPHCozMxH2Mo 4lgOEePzNm0tRgeLezV6ffAt0gunVTLw7onLRnrq0/IzW7yWR7QkrmBL7jTKEn5u +qKhbwKfBstIs+bMY2Zkp18gnTxKLxoS2tFczGkPLPgizskuemMghRniWaoLcyeh kd3qqGElvW/VDL5AaWTg0nLVkjRo9z+40RQzuVaE8AkAFmxZzow3x+VJYKdjykkJ 0iT9wCS0DRTXu269V264Vf/3jvredZiKRkgwlL9xNAwxXFg0x/XFw005UWVRIkdg cKWTjpBP2dPwVZ4WWC+9aGVd+Gyn1o0CLelf4rEjGoXbAAEgAqeGUxrcIlbjXfbc mwIDAQAB -----END PUBLIC KEY----- ` ``` This command will result in 3 keys loaded: 2 keys from files and 1 from command line. ## Configuration The shortlist of configuration flags include the following: ```console -auth.httpHeader string HTTP header name to look for JWT authorization token (default "Authorization") -auth.publicKeyFiles array Path file with public key to verify JWT token signature Supports an array of values separated by comma or specified via multiple flags. -auth.publicKeys array Public keys to verify JWT token signature Supports an array of values separated by comma or specified via multiple flags. -clusterMode enable this for the cluster version -datasource.appendTypePrefix Whether to add type prefix to -datasource.url based on the query type. Set to true if sending different query types to the vmselect URL. -datasource.basicAuth.password string Optional basic auth password for -datasource.url -datasource.basicAuth.passwordFile string Optional path to basic auth password to use for -datasource.url -datasource.basicAuth.username string Optional basic auth username for -datasource.url -datasource.bearerToken string Optional bearer auth token to use for -datasource.url. -datasource.bearerTokenFile string Optional path to bearer token file to use for -datasource.url. -datasource.disableKeepAlive Whether to disable long-lived connections to the datasource. If true, disables HTTP keep-alives and will only use the connection to the server for a single HTTP request. -datasource.headers string Optional HTTP extraHeaders to send with each request to the corresponding -datasource.url. For example, -datasource.headers='My-Auth:foobar' would send 'My-Auth: foobar' HTTP header with every request to the corresponding -datasource.url. Multiple headers must be delimited by '^^': -datasource.headers='header1:value1^^header2:value2' -datasource.lookback duration Lookback defines how far into the past to look when evaluating queries. For example, if the datasource.lookback=5m then param "time" with value now()-5m will be added to every query. -datasource.maxIdleConnections int Defines the number of idle (keep-alive connections) to each configured datasource. Consider setting this value equal to the value: groups_total * group.concurrency. Too low a value may result in a high number of sockets in TIME_WAIT state. (default 100) -datasource.oauth2.clientID string Optional OAuth2 clientID to use for -datasource.url. -datasource.oauth2.clientSecret string Optional OAuth2 clientSecret to use for -datasource.url. -datasource.oauth2.clientSecretFile string Optional OAuth2 clientSecretFile to use for -datasource.url. -datasource.oauth2.scopes string Optional OAuth2 scopes to use for -datasource.url. Scopes must be delimited by ';' -datasource.oauth2.tokenUrl string Optional OAuth2 tokenURL to use for -datasource.url. -datasource.queryStep duration How far a value can fallback to when evaluating queries. For example, if -datasource.queryStep=15s then param "step" with value "15s" will be added to every query. If set to 0, rule's evaluation interval will be used instead. (default 5m0s) -datasource.queryTimeAlignment Whether to align "time" parameter with evaluation interval.Alignment supposed to produce deterministic results despite of number of vmalert replicas or time they were started. See more details here https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1257 (default true) -datasource.roundDigits int Adds "round_digits" GET param to datasource requests. In VM "round_digits" limits the number of digits after the decimal point in response values. -datasource.showURL Whether to show -datasource.url in the exported metrics. It is hidden by default, since it can contain sensitive info such as auth key -datasource.tlsCAFile string Optional path to TLS CA file to use for verifying connections to -datasource.url. By default, system CA is used -datasource.tlsCertFile string Optional path to client-side TLS certificate file to use when connecting to -datasource.url -datasource.tlsInsecureSkipVerify Whether to skip tls verification when connecting to -datasource.url -datasource.tlsKeyFile string Optional path to client-side TLS certificate key to use when connecting to -datasource.url -datasource.tlsServerName string Optional TLS server name to use for connections to -datasource.url. By default, the server name from -datasource.url is used -datasource.url string Datasource compatible with Prometheus HTTP API. It can be single node VictoriaMetrics or vmselect URL. Required parameter. E.g. http://127.0.0.1:8428 . See also -remoteRead.disablePathAppend and -datasource.showURL -enable.auth enables auth with jwt token -enable.rateLimit enables rate limiter -enableTCP6 Whether to enable IPv6 for listening and dialing. By default only IPv4 TCP and UDP is used -envflag.enable Whether to enable reading flags from environment variables additionally to command line. Command line flag values have priority over values from environment vars. Flags are read only from command line if this flag isn't set. See https://docs.victoriametrics.com/#environment-variables for more details -envflag.prefix string Prefix for environment variables if -envflag.enable is set -eula By specifying this flag, you confirm that you have an enterprise license and accept the EULA https://victoriametrics.com/assets/VM_EULA.pdf . This flag is available only in VictoriaMetrics enterprise. See https://docs.victoriametrics.com/enterprise.html -flagsAuthKey string Auth key for /flags endpoint. It must be passed via authKey query arg. It overrides httpAuth.* settings -fs.disableMmap Whether to use pread() instead of mmap() for reading data files. By default mmap() is used for 64-bit arches and pread() is used for 32-bit arches, since they cannot read data files bigger than 2^32 bytes in memory. mmap() is usually faster for reading small data chunks than pread() -http.connTimeout duration Incoming http connections are closed after the configured timeout. This may help to spread the incoming load among a cluster of services behind a load balancer. Please note that the real timeout may be bigger by up to 10% as a protection against the thundering herd problem (default 2m0s) -http.disableResponseCompression Disable compression of HTTP responses to save CPU resources. By default compression is enabled to save network bandwidth -http.idleConnTimeout duration Timeout for incoming idle http connections (default 1m0s) -http.maxGracefulShutdownDuration duration The maximum duration for a graceful shutdown of the HTTP server. A highly loaded server may require increased value for a graceful shutdown (default 7s) -http.pathPrefix string An optional prefix to add to all the paths handled by http server. For example, if '-http.pathPrefix=/foo/bar' is set, then all the http requests will be handled on '/foo/bar/*' paths. This may be useful for proxied requests. See https://www.robustperception.io/using-external-urls-and-proxies-with-prometheus -http.shutdownDelay duration Optional delay before http server shutdown. During this delay, the server returns non-OK responses from /health page, so load balancers can route new requests to other servers -httpAuth.password string Password for HTTP Basic Auth. The authentication is disabled if -httpAuth.username is empty -httpAuth.username string Username for HTTP Basic Auth. The authentication is disabled if empty. See also -httpAuth.password -httpListenAddr string TCP address to listen for http connections (default ":8431") -loggerDisableTimestamps Whether to disable writing timestamps in logs -loggerErrorsPerSecondLimit int Per-second limit on the number of ERROR messages. If more than the given number of errors are emitted per second, the remaining errors are suppressed. Zero values disable the rate limit -loggerFormat string Format for logs. Possible values: default, json (default "default") -loggerJSONFields string Allows renaming fields in JSON formatted logs. Example: "ts:timestamp,msg:message" renames "ts" to "timestamp" and "msg" to "message". Supported fields: ts, level, caller, msg -loggerLevel string Minimum level of errors to log. Possible values: INFO, WARN, ERROR, FATAL, PANIC (default "INFO") -loggerOutput string Output for the logs. Supported values: stderr, stdout (default "stderr") -loggerTimezone string Timezone to use for timestamps in logs. Timezone must be a valid IANA Time Zone. For example: America/New_York, Europe/Berlin, Etc/GMT+3 or Local (default "UTC") -loggerWarnsPerSecondLimit int Per-second limit on the number of WARN messages. If more than the given number of warns are emitted per second, then the remaining warns are suppressed. Zero values disable the rate limit -memory.allowedBytes size Allowed size of system memory VictoriaMetrics caches may occupy. This option overrides -memory.allowedPercent if set to a non-zero value. Too low a value may increase the cache miss rate usually resulting in higher CPU and disk IO usage. Too high a value may evict too much data from OS page cache resulting in higher disk IO usage Supports the following optional suffixes for size values: KB, MB, GB, TB, KiB, MiB, GiB, TiB (default 0) -memory.allowedPercent float Allowed percent of system memory VictoriaMetrics caches may occupy. See also -memory.allowedBytes. Too low a value may increase cache miss rate usually resulting in higher CPU and disk IO usage. Too high a value may evict too much data from OS page cache which will result in higher disk IO usage (default 60) -metricsAuthKey string Auth key for /metrics endpoint. It must be passed via authKey query arg. It overrides httpAuth.* settings -pprofAuthKey string Auth key for /debug/pprof/* endpoints. It must be passed via authKey query arg. It overrides httpAuth.* settings -pushmetrics.extraLabel array Optional labels to add to metrics pushed to -pushmetrics.url . For example, -pushmetrics.extraLabel='instance="foo"' adds instance="foo" label to all the metrics pushed to -pushmetrics.url Supports an array of values separated by comma or specified via multiple flags. -pushmetrics.interval duration Interval for pushing metrics to -pushmetrics.url (default 10s) -pushmetrics.url array Optional URL to push metrics exposed at /metrics page. See https://docs.victoriametrics.com/#push-metrics . By default metrics exposed at /metrics page aren't pushed to any remote storage Supports an array of values separated by comma or specified via multiple flags. -ratelimit.config string path for configuration file. Accepts url address -ratelimit.configCheckInterval duration interval for config file re-read. Zero value disables config re-reading. By default, refreshing is disabled, send SIGHUP for config refresh. -ratelimit.extraLabels array additional labels, that will be applied to fetchdata from datasource Supports an array of values separated by comma or specified via multiple flags. -ratelimit.refreshInterval duration (default 5s) -read.url string read access url address, example: http://vmselect:8481 -remoteRead.disablePathAppend Whether to disable automatic appending of '/api/v1/query' path to the configured -datasource.url and -remoteRead.url -tls Whether to enable TLS for incoming HTTP requests at -httpListenAddr (aka https). -tlsCertFile and -tlsKeyFile must be set if -tls is set -tlsCertFile string Path to file with TLS certificate if -tls is set. Prefer ECDSA certs instead of RSA certs as RSA certs are slower. The provided certificate file is automatically re-read every second, so it can be dynamically updated -tlsCipherSuites array Optional list of TLS cipher suites for incoming requests over HTTPS if -tls is set. See the list of supported cipher suites at https://pkg.go.dev/crypto/tls#pkg-constants Supports an array of values separated by comma or specified via multiple flags. -tlsKeyFile string Path to file with TLS key if -tls is set. The provided key file is automatically re-read every second, so it can be dynamically updated -tlsMinVersion string Optional minimum TLS version to use for incoming requests over HTTPS if -tls is set. Supported values: TLS10, TLS11, TLS12, TLS13 -version Show VictoriaMetrics version -write.url string write access url address, example: http://vminsert:8480 ``` ## TroubleShooting * Access control: * incorrect `jwt` format, try with our tokens * expired token, check `exp` field. * Rate Limiting: * `scrape_interval` at datasource, reduce it to apply limits faster. ## Limitations * Access Control: * `jwt` token signature verification for `HMAC` algorithms is not supported. * RateLimiting: * limits applied based on queries to `datasource.url` * only cluster version can be rate-limited.