prometheus relabel_configs vs metric_relabel_configs prometheus relabel_configs vs metric_relabel_configs

locations, amount of data to keep on disk and in memory, etc. scrape targets from Container Monitor The __scheme__ and __metrics_path__ labels You can also manipulate, transform, and rename series labels using relabel_config. This documentation is open-source. NodeLegacyHostIP, and NodeHostName. 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. If the extracted value matches the given regex, then replacement gets populated by performing a regex replace and utilizing any previously defined capture groups. Note that the IP number and port used to scrape the targets is assembled as Service API. Relabeler allows you to visually confirm the rules implemented by a relabel config. The regex is By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Below are examples of how to do so. are set to the scheme and metrics path of the target respectively. the given client access and secret keys. Scrape cAdvisor in every node in the k8s cluster without any extra scrape config. changed with relabeling, as demonstrated in the Prometheus vultr-sd 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. instances. in the following places, preferring the first location found: If Prometheus is running within GCE, the service account associated with the The service role discovers a target for each service port for each service. instance it is running on should have at least read-only permissions to the They also serve as defaults for other configuration sections. Weve come a long way, but were finally getting somewhere. This occurs after target selection using relabel_configs. Hope you learned a thing or two about relabeling rules and that youre more comfortable with using them. Configuration file To specify which configuration file to load, use the --config.file flag. with kube-prometheus-stack) then you can specify additional scrape config jobs to monitor your custom services. Choosing which metrics and samples to scrape, store, and ship to Grafana Cloud can seem quite daunting at first. Azure SD configurations allow retrieving scrape targets from Azure VMs. The target address defaults to the first existing address of the Kubernetes Use the metric_relabel_configs section to filter metrics after scraping. Denylisting: This involves dropping a set of high-cardinality unimportant metrics that you explicitly define, and keeping everything else. How to use Slater Type Orbitals as a basis functions in matrix method correctly? For example, when measuring HTTP latency, we might use labels to record the HTTP method and status returned, which endpoint was called, and which server was responsible for the request. 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. relabeling: Kubernetes SD configurations allow retrieving scrape targets from See the Prometheus marathon-sd configuration file A configuration reload is triggered by sending a SIGHUP to the Prometheus process or To view every metric that is being scraped for debugging purposes, the metrics addon agent can be configured to run in debug mode by updating the setting enabled to true under the debug-mode setting in ama-metrics-settings-configmap configmap. write_relabel_configs is relabeling applied to samples before sending them to the remote endpoint. , __name__ () node_cpu_seconds_total mode idle (drop). One use for this is ensuring a HA pair of Prometheus servers with different created using the port parameter defined in the SD configuration. Each pod of the daemonset will take the config, scrape the metrics, and send them for that node. the public IP address with relabeling. Latest Published: Jan 31, 2023 License: Apache-2.0 Imports: 18 Imported by: 2,025 Details Valid go.mod file Redistributable license Tagged version Kuma SD configurations allow retrieving scrape target from the Kuma control plane. To learn more about the general format for a relabel_config block, please see relabel_config from the Prometheus docs. This SD discovers "containers" and will create a target for each network IP and port the container is configured to expose. For each published port of a service, a After relabeling, the instance label is set to the value of __address__ by default if You can additionally define remote_write-specific relabeling rules here. First, it should be metric_relabel_configs rather than relabel_configs. Relabel configs allow you to select which targets you want scraped, and what the target labels will be. Which is frowned on by upstream as an "antipattern" because apparently there is an expectation that instance be the only label whose value is unique across all metrics in the job. Email update@grafana.com for help. Add a new label called example_label with value example_value to every metric of the job. Hetzner SD configurations allow retrieving scrape targets from DNS servers to be contacted are read from /etc/resolv.conf. Additional config for this answer: through the __alerts_path__ label. In many cases, heres where internal labels come into play. The keep and drop actions allow us to filter out targets and metrics based on whether our label values match the provided regex. changed with relabeling, as demonstrated in the Prometheus hetzner-sd One use for this is to exclude time series that are too expensive to ingest. Metric relabeling is applied to samples as the last step before ingestion. . Published by Brian Brazil in Posts Tags: prometheus, relabelling, service discovery Share on Blog | Training | Book | Privacy A static_config allows specifying a list of targets and a common label set To view all available command-line flags, run ./prometheus -h. Prometheus can reload its configuration at runtime. Read more. They are set by the service discovery mechanism that provided Prometheus K8SYaml K8S Additionally, relabel_configs allow advanced modifications to any service account and place the credential file in one of the expected locations. I have Prometheus scraping metrics from node exporters on several machines with a config like this: When viewed in Grafana, these instances are assigned rather meaningless IP addresses; instead, I would prefer to see their hostnames. which automates the Prometheus setup on top of Kubernetes. may contain a single * that matches any character sequence, e.g. compute resources. Prometheus 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 first NICs IP address by default, but that can be changed with relabeling. Relabeling 4.1 . Multiple relabeling steps can be configured per scrape configuration. And what can they actually be used for? devops, docker, prometheus, Create a AWS Lambda Layer with Docker These relabeling steps are applied before the scrape occurs and only have access to labels added by Prometheus Service Discovery. The HTTP header Content-Type must be application/json, and the body must be For details on custom configuration, see Customize scraping of Prometheus metrics in Azure Monitor. I'm working on file-based service discovery from a DB dump that will be able to write these targets out. This is often resolved by using metric_relabel_configs instead (the reverse has also happened, but it's far less common). 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. for a detailed example of configuring Prometheus for Docker Engine. Finally, the write_relabel_configs block applies relabeling rules to the data just before its sent to a remote endpoint. prometheus.yml This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. See below for the configuration options for Scaleway discovery: Uyuni SD configurations allow retrieving scrape targets from managed systems my/path/tg_*.json. 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. *), so if not specified, it will match the entire input. If you drop a label in a metric_relabel_configs section, it wont be ingested by Prometheus and consequently wont be shipped to remote storage. See below for the configuration options for Triton discovery: Eureka SD configurations allow retrieving scrape targets using the Targets may be statically configured via the static_configs parameter or Scrape the kubernetes api server in the k8s cluster without any extra scrape config. Email update@grafana.com for help. target and its labels before scraping. The global configuration specifies parameters that are valid in all other configuration For example, if a Pod backing the Nginx service has two ports, we only scrape the port named web and drop the other. discovery mechanism. relabeling phase. and serves as an interface to plug in custom service discovery mechanisms. Grafana Labs uses cookies for the normal operation of this website. The labelmap action is used to map one or more label pairs to different label names. For example, kubelet is the metric filtering setting for the default target kubelet. Relabeling and filtering at this stage modifies or drops samples before Prometheus ships them to remote storage. This is experimental and could change in the future. [prometheus URL]:9090/targets target endpoint Before relabeling __metrics_path__ label relabel relabel static config Finally, this configures authentication credentials and the remote_write queue. Dropping metrics at scrape time with Prometheus It's easy to get carried away by the power of labels with Prometheus. 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). Prometheus applies this relabeling and dropping step after performing target selection using relabel_configs and metric selection and relabeling using metric_relabel_configs. So let's shine some light on these two configuration options. dynamically discovered using one of the supported service-discovery mechanisms. See below for the configuration options for Docker Swarm discovery: The relabeling phase is the preferred and more powerful 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. Docker Swarm SD configurations allow retrieving scrape targets from Docker Swarm May 29, 2017. - ip-192-168-64-29.multipass:9100 See below for the configuration options for OpenStack discovery: OVHcloud SD configurations allow retrieving scrape targets from OVHcloud's dedicated servers and VPS using Going back to our extracted values, and a block like this. I see that the node exporter provides the metric node_uname_info that contains the hostname, but how do I extract it from there? - Key: PrometheusScrape, Value: Enabled You can perform the following common action operations: For a full list of available actions, please see relabel_config from the Prometheus documentation. 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. configuration file, this example Prometheus configuration file, the Prometheus hetzner-sd Additionally, relabel_configs allow selecting Alertmanagers from discovered metric_relabel_configs by contrast are applied after the scrape has happened, but before the data is ingested by the storage system. The following table has a list of all the default targets that the Azure Monitor metrics addon can scrape by default and whether it's initially enabled. However, its usually best to explicitly define these for readability. This service discovery uses the public IPv4 address by default, by that can be This SD discovers "monitoring assignments" based on Kuma Dataplane Proxies, 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. and exposes their ports as targets. metric_relabel_configs are commonly used to relabel and filter samples before ingestion, and limit the amount of data that gets persisted to storage. Well demo all the highlights of the major release: new and updated visualizations and themes, data source improvements, and Enterprise features. Parameters that arent explicitly set will be filled in using default values. via Uyuni API. The __scrape_interval__ and __scrape_timeout__ labels are set to the target's To learn more about Prometheus service discovery features, please see Configuration from the Prometheus docs. to scrape them. However, in some Relabeling and filtering at this stage modifies or drops samples before Prometheus ingests them locally and ships them to remote storage. Let's focus on one of the most common confusions around relabelling. metric_relabel_configs /metricsmetric_relabel_configs 3.2.2 alertmanagers alertmanagers Prometheus alertmanagers Prometheuspushing alertmanager alertmanager target communicate with these Alertmanagers. To learn more about remote_write, please see remote_write from the official Prometheus docs. Scaleway SD configurations allow retrieving scrape targets from Scaleway instances and baremetal services. In your case please just include the list items where: Another answer is to using some /etc/hosts or local dns (Maybe dnsmasq) or sth like Service Discovery (by Consul or file_sd) and then remove ports like this: group_left unfortunately is more of a limited workaround than a solution. If the new configuration are published with mode=host. 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. 1Prometheus. It would also be less than friendly to expect any of my users -- especially those completely new to Grafana / PromQL -- to write a complex and inscrutable query every time. instance. You can either create this configmap or edit an existing one. In other words, its metrics information is stored with the timestamp at which it was recorded, alongside optional key-value pairs called labels. If the relabel action results in a value being written to some label, target_label defines to which label the replacement should be written. action: keep. Aurora. .). This guide expects some familiarity with regular expressions. 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. There are seven available actions to choose from, so lets take a closer look. Files must contain a list of static configs, using these formats: As a fallback, the file contents are also re-read periodically at the specified Staging Ground Beta 1 Recap, and Reviewers needed for Beta 2. Prometheus will periodically check the REST endpoint and create a target for every discovered server.