Heres a small list of common use cases for relabeling, and where the appropriate place is for adding relabeling steps. Choosing which metrics and samples to scrape, store, and ship to Grafana Cloud can seem quite daunting at first. 1Prometheus. changed with relabeling, as demonstrated in the Prometheus linode-sd Omitted fields take on their default value, so these steps will usually be shorter. Finally, the write_relabel_configs block applies relabeling rules to the data just before its sent to a remote endpoint. The following meta labels are available on targets during relabeling: See below for the configuration options for Azure discovery: Consul SD configurations allow retrieving scrape targets from Consul's 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. Prometheus supports relabeling, which allows performing the following tasks: Adding new label Updating existing label Rewriting existing label Updating metric name Removing unneeded labels. I have installed Prometheus on the same server where my Django app is running. instance it is running on should have at least read-only permissions to the If you want to turn on the scraping of the default targets that aren't enabled by default, edit the configmap ama-metrics-settings-configmap configmap to update the targets listed under default-scrape-settings-enabled to true, and apply the configmap to your cluster. Only alphanumeric characters are allowed. Sorry, an error occurred. from the /metrics page) that you want to manipulate that's where metric_relabel_configs applies. Tags: prometheus, relabelling. used by Finagle and Latest Published: Jan 31, 2023 License: Apache-2.0 Imports: 18 Imported by: 2,025 Details Valid go.mod file Redistributable license Tagged version This piece of remote_write configuration sets the remote endpoint to which Prometheus will push samples. OAuth 2.0 authentication using the client credentials grant type. The __address__ label is set to the : address of the target. DigitalOcean SD configurations allow retrieving scrape targets from DigitalOcean's The IAM credentials used must have the ec2:DescribeInstances permission to The tasks role discovers all Swarm tasks Furthermore, only Endpoints that have https-metrics as a defined port name are kept. How is an ETF fee calculated in a trade that ends in less than a year? target and its labels before scraping. For users with thousands of How can they help us in our day-to-day work? What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? metric_relabel_configs by contrast are applied after the scrape has happened, but before the data is ingested by the storage system. Parameters that arent explicitly set will be filled in using default values. By default, instance is set to __address__, which is $host:$port. A scrape_config section specifies a set of targets and parameters describing how relabel_configsmetric_relabel_configssource_labels CC 4.0 BY-SA metrics_config The metrics_config block is used to define a collection of metrics instances. If the endpoint is backed by a pod, all The scrape config should only target a single node and shouldn't use service discovery. sudo systemctl restart prometheus Initially, aside from the configured per-target labels, a target's job I see that the node exporter provides the metric node_uname_info that contains the hostname, but how do I extract it from there? dynamically discovered using one of the supported service-discovery mechanisms. valid JSON. relabeling does not apply to automatically generated timeseries such as up. Prometheus metric_relabel_configs . input to a subsequent relabeling step), use the __tmp label name prefix. This is often useful when fetching sets of targets using a service discovery mechanism like kubernetes_sd_configs, or Kubernetes service discovery. changed with relabeling, as demonstrated in the Prometheus hetzner-sd I am attempting to retrieve metrics using an API and the curl response appears to be in the correct format. Find centralized, trusted content and collaborate around the technologies you use most. where should i use this in prometheus? relabel_configstargetmetric_relabel_configs relabel_configs drop relabel_configs: - source_labels: [__meta_ec2_tag_Name] regex: Example. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The endpointslice role discovers targets from existing endpointslices. Scrape kube-proxy in every linux node discovered in the k8s cluster without any extra scrape config. and applied immediately. 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. type Config struct {GlobalConfig GlobalConfig `yaml:"global"` AlertingConfig AlertingConfig `yaml:"alerting,omitempty"` RuleFiles []string `yaml:"rule_files,omitempty"` ScrapeConfigs []*ScrapeConfig `yaml:"scrape_configs,omitempty"` . tracing_config configures exporting traces from Prometheus to a tracing backend via the OTLP protocol. Prometheus interface. Python Flask Forms with Jinja Templating , Copyright 2023 - Ruan - For now, Prometheus Operator adds following labels automatically: endpoint, instance, namespace, pod, and service. If a task has no published ports, a target per task is So if there are some expensive metrics you want to drop, or labels coming from the scrape itself (e.g. created using the port parameter defined in the SD configuration. Connect and share knowledge within a single location that is structured and easy to search. Why does Mister Mxyzptlk need to have a weakness in the comics? The labels can be used in the relabel_configs section to filter targets or replace labels for the targets. Next, using relabel_configs, only Endpoints with the Service Label k8s_app=kubelet are kept. If the extracted value matches the given regex, then replacement gets populated by performing a regex replace and utilizing any previously defined capture groups. You can filter series using Prometheuss relabel_config configuration object. Finally, use write_relabel_configs in a remote_write configuration to select which series and labels to ship to remote storage. create a target group for every app that has at least one healthy task. Only 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: (. Kubernetes' REST API and always staying synchronized with Read more. Each instance defines a collection of Prometheus-compatible scrape_configs and remote_write rules. To learn more about the general format for a relabel_config block, please see relabel_config from the Prometheus docs. To update the scrape interval settings for any target, the customer can update the duration in default-targets-scrape-interval-settings setting for that target in ama-metrics-settings-configmap configmap. So if you want to say scrape this type of machine but not that one, use relabel_configs. So now that we understand what the input is for the various relabel_config rules, how do we create one? tsdb lets you configure the runtime-reloadable configuration settings of the TSDB. additional container ports of the pod, not bound to an endpoint port, are discovered as targets as well. Sign up for free now! create a target for every app instance. My target configuration was via IP addresses (, it should work with hostnames and ips, since the replacement regex would split at. The replacement field defaults to just $1, the first captured regex, so its sometimes omitted. So the solution I used is to combine an existing value containing what we want (the hostnmame) with a metric from the node exporter. At a high level, a relabel_config allows you to select one or more source label values that can be concatenated using a separator parameter. . Prometheus is configured through a single YAML file called prometheus.yml. An example might make this clearer. I am attempting to retrieve metrics using an API and the curl response appears to be in the correct format. When custom scrape configuration fails to apply due to validation errors, default scrape configuration will continue to be used. It is the canonical way to specify static targets in a scrape prometheustarget 12key metrics_relabel_configsrelabel_configsmetrics_relabel_configsrelabel_configstarget metric_relabel_configs 0 APP "" sleepyzhang 0 7638 0 0 The result of the concatenation is the string node-42 and the MD5 of the string modulus 8 is 5. First, it should be metric_relabel_configs rather than relabel_configs. The other is for the CloudWatch agent configuration. The endpoints role discovers targets from listed endpoints of a service. It has the same configuration format and actions as target relabeling. Any label pairs whose names match the provided regex will be copied with the new label name given in the replacement field, by utilizing group references (${1}, ${2}, etc). support for filtering instances. - Key: Name, Value: pdn-server-1 Additionally, relabel_configs allow selecting Alertmanagers from discovered It does so by replacing the labels for scraped data by regexes with relabel_configs. Prometheus way to filter targets based on arbitrary labels. their API. The file is written in YAML format, Relabeling 4.1 . IONOS Cloud API. defined by the scheme described below. This is most commonly used for sharding multiple targets across a fleet of Prometheus instances. This is generally useful for blackbox monitoring of an ingress. This can be . filepath from which the target was extracted. Prometheus needs to know what to scrape, and that's where service discovery and relabel_configs come in. So ultimately {__tmp=5} would be appended to the metrics label set. In the extreme this can overload your Prometheus server, such as if you create a time series for each of hundreds of thousands of users. When we configured Prometheus to run as a service, we specified the path of /etc/prometheus/prometheus.yml. Docker SD configurations allow retrieving scrape targets from Docker Engine hosts. which automates the Prometheus setup on top of Kubernetes. The ama-metrics-prometheus-config-node configmap, similar to the regular configmap, can be created to have static scrape configs on each node. Additionally, relabel_configs allow advanced modifications to any All rights reserved. Mixins are a set of preconfigured dashboards and alerts. to filter proxies and user-defined tags. Any other characters else will be replaced with _. Curated sets of important metrics can be found in Mixins. The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup. Kuma SD configurations allow retrieving scrape target from the Kuma control plane. configuration file. There's the idea that the exporter should be "fixed', but I'm hesitant to go down the rabbit hole of a potentially breaking change to a widely used project. the cluster state. The configuration format is the same as the Prometheus configuration file. This is often resolved by using metric_relabel_configs instead (the reverse has also happened, but it's far less common). The role will try to use the public IPv4 address as default address, if there's none it will try to use the IPv6 one. Making statements based on opinion; back them up with references or personal experience. It is For non-list parameters the Once Prometheus is running, you can use PromQL queries to see how the metrics are evolving over time, such as rate (node_cpu_seconds_total [1m]) to observe CPU usage: While the node exporter does a great job of producing machine-level metrics on Unix systems, it's not going to help you expose metrics for all of your other third-party applications. Downloads. Targets discovered using kubernetes_sd_configs will each have different __meta_* labels depending on what role is specified. relabeling phase. Linode APIv4. By default, all apps will show up as a single job in Prometheus (the one specified *), so if not specified, it will match the entire input. Otherwise each node will try to scrape all targets and will make many calls to the Kubernetes API server. Marathon REST API. Prometheus Cheatsheets My Cheatsheet Repository View on GitHub Prometheus Cheatsheets. 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. You can add additional metric_relabel_configs sections that replace and modify labels here. of your services provide Prometheus metrics, you can use a Marathon label and This feature allows you to filter through series labels using regular expressions and keep or drop those that match. For example, if a Pod backing the Nginx service has two ports, we only scrape the port named web and drop the other. Thats all for today! Serverset data must be in the JSON format, the Thrift format is not currently supported. is it query? Marathon SD configurations allow retrieving scrape targets using the You can either create this configmap or edit an existing one. There is a small demo of how to use See this example Prometheus configuration file Configuration file To specify which configuration file to load, use the --config.file flag. Grafana Labs uses cookies for the normal operation of this website. An additional scrape config uses regex evaluation to find matching services en masse, and targets a set of services based on label, annotation, namespace, or name. And if one doesn't work you can always try the other! are published with mode=host. source_labels and separator Let's start off with source_labels. The hashmod action provides a mechanism for horizontally scaling Prometheus. domain names which are periodically queried to discover a list of targets. 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 Write relabeling is applied after external labels. Use __address__ as the source label only because that label will always exist and will add the label for every target of the job. 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. Below are examples of how to do so. One is for the standard Prometheus configurations as documented in <scrape_config> in the Prometheus documentation. Since weve used default regex, replacement, action, and separator values here, they can be omitted for brevity. discovery mechanism. A static_config allows specifying a list of targets and a common label set Docker Swarm SD configurations allow retrieving scrape targets from Docker Swarm Create Your Python's Custom Prometheus Exporter Tony DevOps in K8s K9s, Terminal Based UI to Manage Your Cluster Kirshi Yin in Better Programming How To Monitor a Spring Boot App With. can be more efficient to use the Swarm API directly which has basic support for dynamically discovered using one of the supported service-discovery mechanisms. Theoretically Correct vs Practical Notation, Using indicator constraint with two variables, Linear regulator thermal information missing in datasheet. Note that exemplar storage is still considered experimental and must be enabled via --enable-feature=exemplar-storage. Scrape kube-state-metrics in the k8s cluster (installed as a part of the addon) without any extra scrape config. Please help improve it by filing issues or pull requests. Some of these special labels available to us are. To learn how to do this, please see Sending data from multiple high-availability Prometheus instances. is any valid 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. However, its usually best to explicitly define these for readability. If it finds the instance_ip label, it renames this label to host_ip. filtering containers (using filters). relabeling phase. How do I align things in the following tabular environment? Its value is set to the When metrics come from another system they often don't have labels. 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. This article provides instructions on customizing metrics scraping for a Kubernetes cluster with the metrics addon in Azure Monitor. 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. The Linux Foundation has registered trademarks and uses trademarks. Where may be a path ending in .json, .yml or .yaml. Relabelling. 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: For OVHcloud's public cloud instances you can use the openstacksdconfig. Note that adding an additional scrape . For example "test\'smetric\"s\"" and testbackslash\\*. You may wish to check out the 3rd party Prometheus Operator, We drop all ports that arent named web. integrations with this for them. 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.). 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 This can be Prometheus Relabling Using a standard prometheus config to scrape two targets: - ip-192-168-64-29.multipass:9100 - ip-192-168-64-30.multipass:9100 The purpose of this post is to explain the value of Prometheus relabel_config block, the different places where it can be found, and its usefulness in taming Prometheus 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. 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. I have suggested calling it target_relabel_configs to differentiate it from metric_relabel_configs. The HTTP header Content-Type must be application/json, and the body must be We've looked at the full Life of a Label. Each target has a meta label __meta_filepath during the external labels send identical alerts. "After the incident", I started to be more careful not to trip over things. Using a standard prometheus config to scrape two targets: * action: drop metric_relabel_configs The cluster label appended to every time series scraped will use the last part of the full AKS cluster's ARM resourceID. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. If the endpoint is backed by a pod, all Prometheus #Prometheus SoundCloud (TSDB).2012, Prometheus,.Prometheus 2016 CNCF ( Cloud Native Computing Fou. After relabeling, the instance label is set to the value of __address__ by default if way to filter containers. Prom Labss Relabeler tool may be helpful when debugging relabel configs. configuration file. They are applied to the label set of each target in order of their appearance will periodically check the REST endpoint for currently running tasks and Consider the following metric and relabeling step. The prometheus_sd_http_failures_total counter metric tracks the number of changed with relabeling, as demonstrated in the Prometheus scaleway-sd Alertmanagers may be statically configured via the static_configs parameter or This reduced set of targets corresponds to Kubelet https-metrics scrape endpoints. As an example, consider the following two metrics. One use for this is to exclude time series that are too expensive to ingest. Otherwise the custom configuration will fail validation and won't be applied. Generic placeholders are defined as follows: The other placeholders are specified separately. You can additionally define remote_write-specific relabeling rules here. Relabel configs allow you to select which targets you want scraped, and what the target labels will be. This will also reload any configured rule files. metadata and a single tag). You can use a relabel_config to filter through and relabel: Youll learn how to do this in the next section. For reference, heres our guide to Reducing Prometheus metrics usage with relabeling. Alert relabeling is applied to alerts before they are sent to the Alertmanager. However, in some This guide expects some familiarity with regular expressions. in the configuration file), which can also be changed using relabeling. With this, the node_memory_Active_bytes metric which contains only instance and job labels by default, gets an additional nodename label that you can use in the description field of Grafana.