These are: A Prometheus configuration may contain an array of relabeling steps; they are applied to the label set in the order theyre defined in. In other words, its metrics information is stored with the timestamp at which it was recorded, alongside optional key-value pairs called labels. As we saw before, the following block will set the env label to the replacement provided, so {env="production"} will be added to the labelset. instances, as well as So let's shine some light on these two configuration options. To allowlist metrics and labels, you should identify a set of core important metrics and labels that youd like to keep. Prometheus relabel_configs 4. 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. I just came across this problem and the solution is to use a group_left to resolve this problem. If a task has no published ports, a target per task is interval and timeout. This article provides instructions on customizing metrics scraping for a Kubernetes cluster with the metrics addon in Azure Monitor. 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. For a list of trademarks of The Linux Foundation, please see our Trademark Usage page. 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. To un-anchor the regex, use .*.*. discovery endpoints. See below for the configuration options for Uyuni discovery: See the Prometheus uyuni-sd configuration file locations, amount of data to keep on disk and in memory, etc. Use the following to filter IN metrics collected for the default targets using regex based filtering. The scrape config should only target a single node and shouldn't use service discovery. Customize relabel configs Issue #1166 prometheus-operator How to use relabeling in Prometheus and VictoriaMetrics Relabel configs allow you to select which targets you want scraped, and what the target labels will be. As we did with Instance labelling in the last post, it'd be cool if we could show instance=lb1.example.com instead of an IP address and port. After changing the file, the prometheus service will need to be restarted to pickup the changes. While via the MADS v1 (Monitoring Assignment Discovery Service) xDS API, and will create a target for each proxy They are set by the service discovery mechanism that provided Enable Prometheus Native Service Discovery - Sysdig Documentation to scrape them. So if you want to say scrape this type of machine but not that one, use relabel_configs. One of the following role types can be configured to discover targets: The node role discovers one target per cluster node with the address defaulting Scrape info about the prometheus-collector container such as the amount and size of timeseries scraped. So without further ado, lets get into it! Where may be a path ending in .json, .yml or .yaml. Marathon SD configurations allow retrieving scrape targets using the This service discovery uses the public IPv4 address by default, by that can be To learn more, please see Regular expression on Wikipedia. For users with thousands of prometheus prometheus server Pull Push . will periodically check the REST endpoint for currently running tasks and Published by Brian Brazil in Posts. Latest Published: Jan 31, 2023 License: Apache-2.0 Imports: 18 Imported by: 2,025 Details Valid go.mod file Redistributable license Tagged version from the /metrics page) that you want to manipulate that's where metric_relabel_configs applies. For instance, if you created a secret named kube-prometheus-prometheus-alert-relabel-config and it contains a file named additional-alert-relabel-configs.yaml, use the parameters below: Files may be provided in YAML or JSON format. In the previous example, we may not be interested in keeping track of specific subsystems labels anymore. as retrieved from the API server. relabeling is applied after external labels. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Consul setups, the relevant address is in __meta_consul_service_address. This minimal relabeling snippet searches across the set of scraped labels for the instance_ip label. Kuma SD configurations allow retrieving scrape target from the Kuma control plane. This service discovery uses the main IPv4 address by default, which that be My target configuration was via IP addresses (, it should work with hostnames and ips, since the replacement regex would split at. from underlying pods), the following labels are attached: If the endpoints belong to a service, all labels of the, For all targets backed by a pod, all labels of the. Nerve SD configurations allow retrieving scrape targets from AirBnB's Nerve which are stored in created using the port parameter defined in the SD configuration. this functionality. A Prometheus configuration may contain an array of relabeling steps; they are applied to the label set in the order they're defined in. - ip-192-168-64-30.multipass:9100. With a (partial) config that looks like this, I was able to achieve the desired result. It fetches targets from an HTTP endpoint containing a list of zero or more which rule files to load. . - Key: Environment, Value: dev. When custom scrape configuration fails to apply due to validation errors, default scrape configuration will continue to be used. instances. prometheus-relabel_configsmetric_relabel_configs - view raw prometheus.yml hosted with by GitHub , Prometheus . In many cases, heres where internal labels come into play. The default regex value is (. Prometheusrelabel_config - Qiita To override the cluster label in the time series scraped, update the setting cluster_alias to any string under prometheus-collector-settings in the ama-metrics-settings-configmap configmap. See this example Prometheus configuration file Currently supported are the following sections: Any other unsupported sections need to be removed from the config before applying as a configmap. Tracing is currently an experimental feature and could change in the future. metrics_config | Grafana Agent documentation The node-exporter config below is one of the default targets for the daemonset pods. it was not set during relabeling. It may be a factor that my environment does not have DNS A or PTR records for the nodes in question. In those cases, you can use the relabel Endpoints are limited to the kube-system namespace. are set to the scheme and metrics path of the target respectively. Prometheus K8SYaml K8S For example, if a Pod backing the Nginx service has two ports, we only scrape the port named web and drop the other. service account and place the credential file in one of the expected locations. Prometheus Relabel Rules and the 'action' Parameter There are seven available actions to choose from, so lets take a closer look. After saving the config file switch to the terminal with your Prometheus docker container and stop it by pressing ctrl+C and start it again to reload the configuration by using the existing command. They allow us to filter the targets returned by our SD mechanism, as well as manipulate the labels it sets. Denylisting: This involves dropping a set of high-cardinality unimportant metrics that you explicitly define, and keeping everything else. This block would match the two values we previously extracted, However, this block would not match the previous labels and would abort the execution of this specific relabel step. kube-state-metricsAPI ServerDeploymentNodePodkube-state-metricsmetricsPrometheus . a port-free target per container is created for manually adding a port via relabeling. additional container ports of the pod, not bound to an endpoint port, are discovered as targets as well. relabeling. anchored on both ends. . relabelling - Robust Perception | Prometheus Monitoring Experts would result in capturing whats before and after the @ symbol, swapping them around, and separating them with a slash. By default, all apps will show up as a single job in Prometheus (the one specified When we want to relabel one of the source the prometheus internal labels, __address__ which will be the given target including the port, then we apply regex: (. Linode APIv4. Multiple relabeling steps can be configured per scrape configuration. Relabeling relabeling Prometheus Relabel This role uses the private IPv4 address by default. discovery mechanism. For all targets discovered directly from the endpoints list (those not additionally inferred By default, for all the default targets, only minimal metrics used in the default recording rules, alerts, and Grafana dashboards are ingested as described in minimal-ingestion-profile. Going back to our extracted values, and a block like this. Open positions, Check out the open source projects we support The first relabeling rule adds {__keep="yes"} label to metrics with mountpoint matching the given regex. To learn more about them, please see Prometheus Monitoring Mixins. Prometheus fetches an access token from the specified endpoint with The scrape intervals have to be set by customer in the correct format specified here, else the default value of 30 seconds will be applied to the corresponding targets. changes resulting in well-formed target groups are applied. Let's focus on one of the most common confusions around relabelling. To specify which configuration file to load, use the --config.file flag. The labels can be used in the relabel_configs section to filter targets or replace labels for the targets. filepath from which the target was extracted. The target The private IP address is used by default, but may be changed to This is often useful when fetching sets of targets using a service discovery mechanism like kubernetes_sd_configs, or Kubernetes service discovery. Lightsail SD configurations allow retrieving scrape targets from AWS Lightsail This can be useful when local Prometheus storage is cheap and plentiful, but the set of metrics shipped to remote storage requires judicious curation to avoid excess costs. metric_relabel_configsmetric . Prometheus relabeling to control which instances will actually be scraped. filtering nodes (using filters). *), so if not specified, it will match the entire input. in the following places, preferring the first location found: If Prometheus is running within GCE, the service account associated with the *) regex captures the entire label value, replacement references this capture group, $1, when setting the new target_label. Advanced Setup: Configure custom Prometheus scrape jobs for the daemonset Relabel instance to hostname in Prometheus - Stack Overflow . undefined - Coder v1 Docs Now what can we do with those building blocks? The It is Using metric_relabel_configs, you can drastically reduce your Prometheus metrics usage by throwing out unneeded samples. 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 support for filtering instances. The endpointslice role discovers targets from existing endpointslices. The PromQL queries that power these dashboards and alerts reference a core set of important observability metrics. with kube-prometheus-stack) then you can specify additional scrape config jobs to monitor your custom services. Vultr SD configurations allow retrieving scrape targets from Vultr. by the API. For redis we use targets like described in, Relabel instance to hostname in Prometheus, groups.google.com/forum/#!topic/prometheus-developers/, github.com/oliver006/redis_exporter/issues/623, https://stackoverflow.com/a/64623786/2043385, How Intuit democratizes AI development across teams through reusability. The result of the concatenation is the string node-42 and the MD5 of the string modulus 8 is 5. Read more. To play around with and analyze any regular expressions, you can use RegExr. Python Flask Forms with Jinja Templating , Copyright 2023 - Ruan - Document real world examples of using relabel_config #341 - GitHub Tutorial - Configure Prometheus | Couchbase Developer Portal with this feature. The labelmap action is used to map one or more label pairs to different label names. If you're currently using Azure Monitor Container Insights Prometheus scraping with the setting monitor_kubernetes_pods = true, adding this job to your custom config will allow you to scrape the same pods and metrics. metric_relabel_configs offers one way around that. changed with relabeling, as demonstrated in the Prometheus vultr-sd 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. You can either create this configmap or edit an existing one. through the __alerts_path__ label. Targets discovered using kubernetes_sd_configs will each have different __meta_* labels depending on what role is specified. A configuration reload is triggered by sending a SIGHUP to the Prometheus process or sending a HTTP POST request to the /-/reload endpoint (when the --web.enable-lifecycle flag is enabled). A relabel_configs configuration allows you to keep or drop targets returned by a service discovery mechanism like Kubernetes service discovery or AWS EC2 instance service discovery. You can extract a samples metric name using the __name__ meta-label. The ama-metrics replicaset pod consumes the custom Prometheus config and scrapes the specified targets. A consists of seven fields. Prometheus is configured via command-line flags and a configuration file. If a container has no specified ports, r/kubernetes I've been collecting a list of k8s/container tools and sorting them by the number of stars in Github, so far the most complete k8s/container list I know of with almost 250 entries - hoping this is useful for someone else besides me - looking for feedback, ideas for improvement and contributors configuration file, this example Prometheus configuration file, the Prometheus hetzner-sd Reducing Prometheus metrics usage with relabeling, Common use cases for relabeling in Prometheus, The targets scrape interval (experimental), Special labels set set by the Service Discovery mechanism, Special prefix used to temporarily store label values before discarding them, When you want to ignore a subset of applications; use relabel_config, When splitting targets between multiple Prometheus servers; use relabel_config + hashmod, When you want to ignore a subset of high cardinality metrics; use metric_relabel_config, When sending different metrics to different endpoints; use write_relabel_config. the command-line flags configure immutable system parameters (such as storage Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Its value is set to the Note that adding an additional scrape . Prometheus applies this relabeling and dropping step after performing target selection using relabel_configs and metric selection and relabeling using metric_relabel_configs. The __scrape_interval__ and __scrape_timeout__ labels are set to the target's available as a label (see below). configuration file. Below are examples showing ways to use relabel_configs. 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). So now that we understand what the input is for the various relabel_config rules, how do we create one? of your services provide Prometheus metrics, you can use a Marathon label and windows_exporter: enabled: true metric_relabel_configs: - source_labels: [__name__] regex: windows_system_system_up_time action: keep . Service API. yamlyaml. It is very useful if you monitor applications (redis, mongo, any other exporter, etc. The regex field expects a valid RE2 regular expression and is used to match the extracted value from the combination of the source_label and separator fields. We've looked at the full Life of a Label. config package - github.com/prometheus/prometheus/config - Go Packages See below for the configuration options for Docker discovery: The relabeling phase is the preferred and more powerful For each endpoint Prometheus dns service discovery in docker swarm relabel instance, Prometheus - Aggregate and relabel by regex, How to concatenate labels in Prometheus relabel config, Prometheus: invalid hostname with https scheme, Prometheus multiple source label in relabel config, Prometheus metric relabel for specific value. Remote development environments that secure your source code and sensitive data Prometheusrelabel_config sell prometheus relabel_configs metric_relabel_configs example_metric {=""} prometheus.yaml Prometheus also provides some internal labels for us. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. via Uyuni API. The service role discovers a target for each service port for each service. Prometheus It also provides parameters to configure how to The prometheus_sd_http_failures_total counter metric tracks the number of You can't relabel with a nonexistent value in the request, you are limited to the different parameters that you gave to Prometheus or those that exists in the module use for the request (gcp,aws.). the public IP address with relabeling. I'm not sure if that's helpful. So if there are some expensive metrics you want to drop, or labels coming from the scrape itself (e.g. You can reduce the number of active series sent to Grafana Cloud in two ways: Allowlisting: This involves keeping a set of important metrics and labels that you explicitly define, and dropping everything else. See below for the configuration options for OVHcloud discovery: PuppetDB SD configurations allow retrieving scrape targets from They are applied to the label set of each target in order of their appearance Prometheus+Grafana+alertmanager+ +__51CTO service port. metric_relabel_configs are commonly used to relabel and filter samples before ingestion, and limit the amount of data that gets persisted to storage. Using the write_relabel_config entry shown below, you can target the metric name using the __name__ label in combination with the instance name. In this guide, weve presented an overview of Prometheuss powerful and flexible relabel_config feature and how you can leverage it to control and reduce your local and Grafana Cloud Prometheus usage. If the endpoint is backed by a pod, all Prometheus: Adding a label to a target - Niels's DevOps Musings to filter proxies and user-defined tags. 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. The above snippet will concatenate the values stored in __meta_kubernetes_pod_name and __meta_kubernetes_pod_container_port_number. Alert relabeling is applied to alerts before they are sent to the Alertmanager. The following meta labels are available on all targets during relabeling: The labels below are only available for targets with role set to hcloud: The labels below are only available for targets with role set to robot: HTTP-based service discovery provides a more generic way to configure static targets Well demo all the highlights of the major release: new and updated visualizations and themes, data source improvements, and Enterprise features. Each unique combination of key-value label pairs is stored as a new time series in Prometheus, so labels are crucial for understanding the datas cardinality and unbounded sets of values should be avoided as labels. The regex is You can configure the metrics addon to scrape targets other than the default ones, using the same configuration format as the Prometheus configuration file. This feature allows you to filter through series labels using regular expressions and keep or drop those that match. Prometheus Hetzner Cloud API and This is often resolved by using metric_relabel_configs instead (the reverse has also happened, but it's far less common). Omitted fields take on their default value, so these steps will usually be shorter. and exposes their ports as targets. For users with thousands of tasks it In the general case, one scrape configuration specifies a single sudo systemctl restart prometheus This service discovery uses the public IPv4 address by default, by that can be Prom Labss Relabeler tool may be helpful when debugging relabel configs. type Config struct {GlobalConfig GlobalConfig `yaml:"global"` AlertingConfig AlertingConfig `yaml:"alerting,omitempty"` RuleFiles []string `yaml:"rule_files,omitempty"` ScrapeConfigs []*ScrapeConfig `yaml:"scrape_configs,omitempty"` . verrazzano.io The tasks role discovers all Swarm tasks Metric relabel configs are applied after scraping and before ingestion. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The __* labels are dropped after discovering the targets. Setup monitoring with Prometheus and Grafana in Kubernetes Start monitoring your Kubernetes Geoffrey Mariette in Better Programming Create Your Python's Custom Prometheus Exporter Tony in Dev Genius K8s ChatGPT Bot For Intelligent Troubleshooting Stefanie Lai in Dev Genius All You Need to Know about Debugging Kubernetes Cronjob Help Status way to filter targets based on arbitrary labels. configuration file. How to use Slater Type Orbitals as a basis functions in matrix method correctly? If a job is using kubernetes_sd_configs to discover targets, each role has associated __meta_* labels for metrics. We drop all ports that arent named web. still uniquely labeled once the labels are removed. Relabeling is a powerful tool to dynamically rewrite the label set of a target before
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