address with relabeling. Basics; Curated Examples; Example Queries; Scrape Configs; Recording Rules; External Sources; Basics. Changes to all defined files are detected via disk watches Only Sorry, an error occurred. filtering containers (using filters). prefix is guaranteed to never be used by Prometheus itself. relabeling. Our answer exist inside the node_uname_info metric which contains the nodename value. You can perform the following common action operations: For a full list of available actions, please see relabel_config from the Prometheus documentation. ec2:DescribeAvailabilityZones permission if you want the availability zone ID Why do academics stay as adjuncts for years rather than move around? devops, docker, prometheus, Create a AWS Lambda Layer with Docker The prometheus_sd_http_failures_total counter metric tracks the number of This service discovery uses the public IPv4 address by default, by that can be The target address defaults to the private IP address of the network I've been trying in vai for a month to find a coherent explanation of group_left, and expressions aren't labels. compute resources. See below for the configuration options for Eureka discovery: See the Prometheus eureka-sd configuration file are set to the scheme and metrics path of the target respectively. Since the (. For readability its usually best to explicitly define a relabel_config. This may be changed with relabeling. Prometheus relabel configs are notoriously badly documented, so here's how to do something simple that I couldn't find documented anywhere: How to add a label to all metrics coming from a specific scrape target. Nerve SD configurations allow retrieving scrape targets from AirBnB's Nerve which are stored in which rule files to load. The reason is that relabeling can be applied in different parts of a metrics lifecycle from selecting which of the available targets wed like to scrape, to sieving what wed like to store in Prometheus time series database and what to send over to some remote storage. This solution stores data at scrape-time with the desired labels, no need for funny PromQL queries or hardcoded hacks. But still that shouldn't matter, I dunno why node_exporter isn't supplying any instance label at all since it does find the hostname for the info metric (where it doesn't do me any good). Finally, the write_relabel_configs block applies relabeling rules to the data just before its sent to a remote endpoint. Much of the content here also applies to Grafana Agent users. via the MADS v1 (Monitoring Assignment Discovery Service) xDS API, and will create a target for each proxy changed with relabeling, as demonstrated in the Prometheus scaleway-sd You can apply a relabel_config to filter and manipulate labels at the following stages of metric collection: This sample configuration file skeleton demonstrates where each of these sections lives in a Prometheus config: Use relabel_configs in a given scrape job to select which targets to scrape. metric_relabel_configs are commonly used to relabel and filter samples before ingestion, and limit the amount of data that gets persisted to storage. Prometheusrelabel_config sell prometheus relabel_configs metric_relabel_configs example_metric {=""} prometheus.yaml For details on custom configuration, see Customize scraping of Prometheus metrics in Azure Monitor. The first relabeling rule adds {__keep="yes"} label to metrics with mountpoint matching the given regex. If a task has no published ports, a target per task is Prometheus supports relabeling, which allows performing the following tasks: Adding new label Updating existing label Rewriting existing label Updating metric name Removing unneeded labels. the public IP address with relabeling. Use __address__ as the source label only because that label will always exist and will add the label for every target of the job. This occurs after target selection using relabel_configs. For example, you may have a scrape job that fetches all Kubernetes Endpoints using a kubernetes_sd_configs parameter. prometheus prometheus server Pull Push . You can additionally define remote_write-specific relabeling rules here. RFC6763. Write relabeling is applied after external labels. metric_relabel_configs are commonly used to relabel and filter samples before ingestion, and limit the amount of data that gets persisted to storage. - the incident has nothing to do with me; can I use this this way? One is for the standard Prometheus configurations as documented in <scrape_config> in the Prometheus documentation. For Additionally, relabel_configs allow selecting Alertmanagers from discovered Well demo all the highlights of the major release: new and updated visualizations and themes, data source improvements, and Enterprise features. Relabel configs allow you to select which targets you want scraped, and what the target labels will be. job. Grafana Labs uses cookies for the normal operation of this website. After changing the file, the prometheus service will need to be restarted to pickup the changes. If a job is using kubernetes_sd_configs to discover targets, each role has associated __meta_* labels for metrics. It's not uncommon for a user to share a Prometheus config with a validrelabel_configs and wonder why it isn't taking effect. This is a quick demonstration on how to use prometheus relabel configs, when you have scenarios for when example, you want to use a part of your hostname and assign it to a prometheus label. target is generated. Prometheus fetches an access token from the specified endpoint with Scrape cAdvisor in every node in the k8s cluster without any extra scrape config. See the Debug Mode section in Troubleshoot collection of Prometheus metrics for more details. configuration. OpenStack SD configurations allow retrieving scrape targets from OpenStack Nova I think you should be able to relabel the instance label to match the hostname of a node, so I tried using relabelling rules like this, to no effect whatsoever: I can manually relabel every target, but that requires hardcoding every hostname into Prometheus, which is not really nice. PuppetDB resources. For each published port of a service, a Alert With a (partial) config that looks like this, I was able to achieve the desired result. support for filtering instances. The last relabeling rule drops all the metrics without {__keep="yes"} label. Prometheus applies this relabeling and dropping step after performing target selection using relabel_configs and metric selection and relabeling using metric_relabel_configs. Relabeling and filtering at this stage modifies or drops samples before Prometheus ships them to remote storage. Finally, the modulus field expects a positive integer. Service API. are published with mode=host. For all targets discovered directly from the endpoints list (those not additionally inferred This Robot API. Yes, I know, trust me I don't like either but it's out of my control. feature to replace the special __address__ label. If you use quotes or backslashes in the regex, you'll need to escape them using a backslash. additional container ports of the pod, not bound to an endpoint port, are discovered as targets as well. Counter: A counter metric always increases; Gauge: A gauge metric can increase or decrease; Histogram: A histogram metric can increase or descrease; Source . Scaleway SD configurations allow retrieving scrape targets from Scaleway instances and baremetal services. They are set by the service discovery mechanism that provided Consider the following metric and relabeling step. First off, the relabel_configs key can be found as part of a scrape job definition. To learn more, please see Regular expression on Wikipedia. See the Prometheus marathon-sd configuration file The __scheme__ and __metrics_path__ labels GCE SD configurations allow retrieving scrape targets from GCP GCE instances. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. To un-anchor the regex, use .*.*. changed with relabeling, as demonstrated in the Prometheus digitalocean-sd Please help improve it by filing issues or pull requests. Using this feature, you can store metrics locally but prevent them from shipping to Grafana Cloud. metric_relabel_configsmetric . Going back to our extracted values, and a block like this. The write_relabel_configs section defines a keep action for all metrics matching the apiserver_request_total|kubelet_node_config_error|kubelet_runtime_operations_errors_total regex, dropping all others. They also serve as defaults for other configuration sections. Labels are sets of key-value pairs that allow us to characterize and organize whats actually being measured in a Prometheus metric. Before scraping targets ; prometheus uses some labels as configuration When scraping targets, prometheus will fetch labels of metrics and add its own After scraping, before registering metrics, labels can be altered With recording rules But also . In many cases, heres where internal labels come into play. A scrape_config section specifies a set of targets and parameters describing how I used the answer to this post as a model for my request: https://stackoverflow.com/a/50357418 . Recall that these metrics will still get persisted to local storage unless this relabeling configuration takes place in the metric_relabel_configs section of a scrape job. The target value is set to the specified default. Kuma SD configurations allow retrieving scrape target from the Kuma control plane. PrometheusGrafana. In this scenario, on my EC2 instances I have 3 tags: To subscribe to this RSS feed, copy and paste this URL into your RSS reader. to the Kubelet's HTTP port. In advanced configurations, this may change. Discover Packages github.com/prometheus/prometheus config config package Version: v0.42. Multiple relabeling steps can be configured per scrape configuration. action: keep. The ama-metrics-prometheus-config-node configmap, similar to the regular configmap, can be created to have static scrape configs on each node. Which seems odd. following meta labels are available on all targets during But what about metrics with no labels? IONOS Cloud API. To play around with and analyze any regular expressions, you can use RegExr. RE2 regular expression. changed with relabeling, as demonstrated in the Prometheus hetzner-sd I have suggested calling it target_relabel_configs to differentiate it from metric_relabel_configs. directly which has basic support for filtering nodes (currently by node kube-state-metricsAPI ServerDeploymentNodePodkube-state-metricsmetricsPrometheus . Linode APIv4. Relabel configs allow you to select which targets you want scraped, and what the target labels will be. Posted by Ruan users with thousands of services it can be more efficient to use the Consul API which automates the Prometheus setup on top of Kubernetes. Replace is the default action for a relabeling rule if we havent specified one; it allows us to overwrite the value of a single label by the contents of the replacement field. Using a standard prometheus config to scrape two targets: May 30th, 2022 3:01 am The hashmod action provides a mechanism for horizontally scaling Prometheus. Read more. Overview. Why does Mister Mxyzptlk need to have a weakness in the comics? For each endpoint instances, as well as DigitalOcean SD configurations allow retrieving scrape targets from DigitalOcean's . Otherwise each node will try to scrape all targets and will make many calls to the Kubernetes API server. windows_exporter: enabled: true metric_relabel_configs: - source_labels: [__name__] regex: windows_system_system_up_time action: keep . Having to tack an incantation onto every simple expression would be annoying; figuring out how to build more complex PromQL queries with multiple metrics is another entirely. WindowsyamlLinux. See below for the configuration options for Uyuni discovery: See the Prometheus uyuni-sd configuration file This is often useful when fetching sets of targets using a service discovery mechanism like kubernetes_sd_configs, or Kubernetes service discovery. Using metric_relabel_configs, you can drastically reduce your Prometheus metrics usage by throwing out unneeded samples. Sign up for free now! We could offer this as an alias, to allow config file transition for Prometheus 3.x. Monitoring Docker container metrics using cAdvisor, Use file-based service discovery to discover scrape targets, Understanding and using the multi-target exporter pattern, Monitoring Linux host metrics with the Node Exporter, the Prometheus digitalocean-sd configuration. additional container ports of the pod, not bound to an endpoint port, are discovered as targets as well. The second relabeling rule adds {__keep="yes"} label to metrics with empty `mountpoint` label, e.g. These relabeling steps are applied before the scrape occurs and only have access to labels added by Prometheus Service Discovery. Both of these methods are implemented through Prometheuss metric filtering and relabeling feature, relabel_config. Once Prometheus scrapes a target, metric_relabel_configs allows you to define keep, drop and replace actions to perform on scraped samples: This sample piece of configuration instructs Prometheus to first fetch a list of endpoints to scrape using Kubernetes service discovery (kubernetes_sd_configs). This can be used to filter metrics with high cardinality or route metrics to specific remote_write targets. this functionality. The PromQL queries that power these dashboards and alerts reference a core set of important observability metrics. This service discovery uses the public IPv4 address by default, but that can be The following rule could be used to distribute the load between 8 Prometheus instances, each responsible for scraping the subset of targets that end up producing a certain value in the [0, 7] range, and ignoring all others. Metric vmagent can accept metrics in various popular data ingestion protocols, apply relabeling to the accepted metrics (for example, change metric names/labels or drop unneeded metrics) and then forward the relabeled metrics to other remote storage systems, which support Prometheus remote_write protocol (including other vmagent instances). s. Hetzner Cloud API and This will also reload any configured rule files. For each declared Whats the grammar of "For those whose stories they are"? An example might make this clearer. Currently supported are the following sections: Any other unsupported sections need to be removed from the config before applying as a configmap. How is an ETF fee calculated in a trade that ends in less than a year? - targets: ['localhost:8070'] scheme: http metric_relabel_configs: - source_labels: [__name__] regex: 'organizations_total|organizations_created' action . Open positions, Check out the open source projects we support Denylisting becomes possible once youve identified a list of high-cardinality metrics and labels that youd like to drop. instance. You can use a relabel_config to filter through and relabel: Youll learn how to do this in the next section. The global configuration specifies parameters that are valid in all other configuration See below for the configuration options for EC2 discovery: The relabeling phase is the preferred and more powerful Choosing which metrics and samples to scrape, store, and ship to Grafana Cloud can seem quite daunting at first. *) regex captures the entire label value, replacement references this capture group, $1, when setting the new target_label. Serverset data must be in the JSON format, the Thrift format is not currently supported. The new label will also show up in the cluster parameter dropdown in the Grafana dashboards instead of the default one. The fastest way to get started is with Grafana Cloud, which includes free forever access to 10k metrics, 50GB logs, 50GB traces, & more. way to filter services or nodes for a service based on arbitrary labels. Or if youre using Prometheus Kubernetes service discovery you might want to drop all targets from your testing or staging namespaces. To filter in more metrics for any default targets, edit the settings under default-targets-metrics-keep-list for the corresponding job you'd like to change. The last path segment One of the following types can be configured to discover targets: The container role discovers one target per "virtual machine" owned by the account. Docker Swarm SD configurations allow retrieving scrape targets from Docker Swarm Why are physically impossible and logically impossible concepts considered separate in terms of probability? Using the __meta_kubernetes_service_label_app label filter, endpoints whose corresponding services do not have the app=nginx label will be dropped by this scrape job. Finally, use write_relabel_configs in a remote_write configuration to select which series and labels to ship to remote storage. service account and place the credential file in one of the expected locations. Connect Grafana to data sources, apps, and more, with Grafana Alerting, Grafana Incident, and Grafana OnCall, Frontend application observability web SDK, Try out and share prebuilt visualizations, Contribute to technical documentation provided by Grafana Labs, Help build the future of open source observability software changes resulting in well-formed target groups are applied. A DNS-based service discovery configuration allows specifying a set of DNS label is set to the value of the first passed URL parameter called . Making statements based on opinion; back them up with references or personal experience. The address will be set to the Kubernetes DNS name of the service and respective By default, all apps will show up as a single job in Prometheus (the one specified The nodes role is used to discover Swarm nodes. Prometheus relabel_configs 4. sending a HTTP POST request to the /-/reload endpoint (when the --web.enable-lifecycle flag is enabled). single target is generated. The relabel_configs section is applied at the time of target discovery and applies to each target for the job. Python Flask Forms with Jinja Templating , Copyright 2023 - Ruan - By default, instance is set to __address__, which is $host:$port. The above snippet will concatenate the values stored in __meta_kubernetes_pod_name and __meta_kubernetes_pod_container_port_number. Note that the IP number and port used to scrape the targets is assembled as discovery endpoints. The scrape config below uses the __meta_* labels added from the kubernetes_sd_configs for the pod role to filter for pods with certain annotations. Scrape kube-proxy in every linux node discovered in the k8s cluster without any extra scrape config. Vultr SD configurations allow retrieving scrape targets from Vultr. Advanced Setup: Configure custom Prometheus scrape jobs for the daemonset Additional labels prefixed with __meta_ may be available during the configuration file. They allow us to filter the targets returned by our SD mechanism, as well as manipulate the labels it sets. relabeling does not apply to automatically generated timeseries such as up. domain names which are periodically queried to discover a list of targets. Prometheus #Prometheus SoundCloud (TSDB).2012, Prometheus,.Prometheus 2016 CNCF ( Cloud Native Computing Fou. it was not set during relabeling. Email update@grafana.com for help. Sending data from multiple high-availability Prometheus instances, relabel_configs vs metric_relabel_configs, Advanced Service Discovery in Prometheus 0.14.0, Relabel_config in a Prometheus configuration file, Scrape target selection using relabel_configs, Metric and label selection using metric_relabel_configs, Controlling remote write behavior using write_relabel_configs, Samples and labels to ingest into Prometheus storage, Samples and labels to ship to remote storage. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. . "After the incident", I started to be more careful not to trip over things. If the new configuration To allowlist metrics and labels, you should identify a set of core important metrics and labels that youd like to keep. This This is generally useful for blackbox monitoring of a service. You can configure the metrics addon to scrape targets other than the default ones, using the same configuration format as the Prometheus configuration file. Omitted fields take on their default value, so these steps will usually be shorter. Prometheus is an open-source monitoring and alerting toolkit that collects and stores its metrics as time series data. to the remote endpoint. inside a Prometheus-enabled mesh. configuration file, the Prometheus uyuni-sd configuration file, the Prometheus vultr-sd Blog | Training | Book | Privacy, relabel_configs vs metric_relabel_configs. *), so if not specified, it will match the entire input. Follow the instructions to create, validate, and apply the configmap for your cluster. I'm working on file-based service discovery from a DB dump that will be able to write these targets out. To learn more about remote_write, please see remote_write from the official Prometheus docs. Now what can we do with those building blocks? Configuration file To specify which configuration file to load, use the --config.file flag. If we provide more than one name in the source_labels array, the result will be the content of their values, concatenated using the provided separator. So as a simple rule of thumb: relabel_config happens before the scrape,metric_relabel_configs happens after the scrape. One use for this is ensuring a HA pair of Prometheus servers with different By using the following relabel_configs snippet, you can limit scrape targets for this job to those whose Service label corresponds to app=nginx and port name to web: The initial set of endpoints fetched by kuberentes_sd_configs in the default namespace can be very large depending on the apps youre running in your cluster. You may wish to check out the 3rd party Prometheus Operator, The other is for the CloudWatch agent configuration. See below for the configuration options for OpenStack discovery: OVHcloud SD configurations allow retrieving scrape targets from OVHcloud's dedicated servers and VPS using instances it can be more efficient to use the EC2 API directly which has dynamically discovered using one of the supported service-discovery mechanisms. to filter proxies and user-defined tags. Avoid downtime. This reduced set of targets corresponds to Kubelet https-metrics scrape endpoints. It fetches targets from an HTTP endpoint containing a list of zero or more Consul setups, the relevant address is in __meta_consul_service_address. How do I align things in the following tabular environment? Catalog API. One of the following roles can be configured to discover targets: The services role discovers all Swarm services Short story taking place on a toroidal planet or moon involving flying. Otherwise the custom configuration will fail validation and won't be applied. The __* labels are dropped after discovering the targets. Step 2: Scrape Prometheus sources and import metrics. Its value is set to the If a service has no published ports, a target per and serves as an interface to plug in custom service discovery mechanisms. For OVHcloud's public cloud instances you can use the openstacksdconfig. The replace action is most useful when you combine it with other fields. You can extract a samples metric name using the __name__ meta-label. Prometheus Cheatsheets My Cheatsheet Repository View on GitHub Prometheus Cheatsheets. To collect all metrics from default targets, in the configmap under default-targets-metrics-keep-list, set minimalingestionprofile to false.