prometheus relabel_configs vs metric_relabel_configs

This SD discovers "containers" and will create a target for each network IP and port the container is configured to expose. Read more. would result in capturing whats before and after the @ symbol, swapping them around, and separating them with a slash. You can also manipulate, transform, and rename series labels using relabel_config. as retrieved from the API server. Prometheus #Prometheus SoundCloud (TSDB).2012, Prometheus,.Prometheus 2016 CNCF ( Cloud Native Computing Fou. Find centralized, trusted content and collaborate around the technologies you use most. Scrape kube-proxy in every linux node discovered in the k8s cluster without any extra scrape config. metrics without this label. my/path/tg_*.json. Prometheus needs to know what to scrape, and that's where service discovery and relabel_configs come in. scrape targets from Container Monitor To drop a specific label, select it using source_labels and use a replacement value of "". 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 Relabelling. This relabeling occurs after target selection. Prometheus Authors 2014-2023 | Documentation Distributed under CC-BY-4.0. following meta labels are available on all targets during configuration file, the Prometheus uyuni-sd configuration file, the Prometheus vultr-sd their API. may contain a single * that matches any character sequence, e.g. . Zookeeper. Relabeling relabeling Prometheus Relabel is it query? . action: keep. For reference, heres our guide to Reducing Prometheus metrics usage with relabeling. 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. Or if youre using Prometheus Kubernetes service discovery you might want to drop all targets from your testing or staging namespaces. I've been trying in vai for a month to find a coherent explanation of group_left, and expressions aren't labels. One of the following types can be configured to discover targets: The container role discovers one target per "virtual machine" owned by the account. This role uses the private IPv4 address by default. s. It fetches targets from an HTTP endpoint containing a list of zero or more Below are examples showing ways to use relabel_configs. Grafana Labs uses cookies for the normal operation of this website. Using this feature, you can store metrics locally but prevent them from shipping to Grafana Cloud. available as a label (see below). for a detailed example of configuring Prometheus with PuppetDB. Serverset SD configurations allow retrieving scrape targets from Serversets which are For a list of trademarks of The Linux Foundation, please see our Trademark Usage page. can be more efficient to use the Docker API directly which has basic support for 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 instance. To allowlist metrics and labels, you should identify a set of core important metrics and labels that youd like to keep. Each instance defines a collection of Prometheus-compatible scrape_configs and remote_write rules. to filter proxies and user-defined tags. 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 For more information, check out our documentation and read more in the Prometheus documentation. promethus relabel_configs metric_relabel_configs One use for this is to exclude time series that are too expensive to ingest. configuration file, the Prometheus linode-sd which rule files to load. target is generated. As an example, consider the following two metrics. To filter by them at the metrics level, first keep them using relabel_configs by assigning a label name and then use metric_relabel_configs to filter. Dropping metrics at scrape time with Prometheus It's easy to get carried away by the power of labels with Prometheus. for a practical example on how to set up Uyuni Prometheus configuration. See this example Prometheus configuration file prometheustarget 12key metrics_relabel_configsrelabel_configsmetrics_relabel_configsrelabel_configstarget metric_relabel_configs 0 APP "" sleepyzhang 0 7638 0 0 The endpoint is queried periodically at the specified refresh interval. This service discovery uses the public IPv4 address by default, but that can be Prometheus Use Grafana to turn failure into resilience. The regex is where should i use this in prometheus? To summarize, the above snippet fetches all endpoints in the default Namespace, and keeps as scrape targets those whose corresponding Service has an app=nginx label set. See below for the configuration options for Docker discovery: The relabeling phase is the preferred and more powerful Difference between relabel_config and metric_relabel_config - Google Groups relabelling - Robust Perception | Prometheus Monitoring Experts additional container ports of the pod, not bound to an endpoint port, are discovered as targets as well. See below for the configuration options for Docker Swarm discovery: The relabeling phase is the preferred and more powerful relabeling: Kubernetes SD configurations allow retrieving scrape targets from The relabel_config step will use this number to populate the target_label with the result of the MD5(extracted value) % modulus expression. However, in some 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: (. Step 2: Scrape Prometheus sources and import metrics. To learn more about remote_write, please see remote_write from the official Prometheus docs. See this example Prometheus configuration file The new label will also show up in the cluster parameter dropdown in the Grafana dashboards instead of the default one. Consider the following metric and relabeling step. An alertmanager_config section specifies Alertmanager instances the Prometheus relabeling. the public IP address with relabeling. Both of these methods are implemented through Prometheuss metric filtering and relabeling feature, relabel_config. Published by Brian Brazil in Posts. the public IP address with relabeling. Prometheus: Adding a label to a target - Niels's DevOps Musings Drop data using Prometheus remote write - New Relic This configuration does not impact any configuration set in metric_relabel_configs or relabel_configs. for them. 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 . 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. Curated sets of important metrics can be found in Mixins. determines the relabeling action to take: Care must be taken with labeldrop and labelkeep to ensure that metrics are created using the port parameter defined in the SD configuration. the target and vary between mechanisms. Omitted fields take on their default value, so these steps will usually be shorter. You can additionally define remote_write-specific relabeling rules here. Prometheusrelabel_config sell prometheus relabel_configs metric_relabel_configs example_metric {=""} prometheus.yaml Use __address__ as the source label only because that label will always exist and will add the label for every target of the job. refresh failures. 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. * action: drop metric_relabel_configs Note: By signing up, you agree to be emailed related product-level information. 11 aylei pushed a commit to aylei/docs that referenced this issue on Oct 28, 2019 Update feature description in overview and readme ( prometheus#341) efb2912 The address will be set to the host specified in the ingress spec. PuppetDB resources. relabel_configs: - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scrape] action: keep regex: true // keep targets with label __meta_kubernetes_service_annotation_prometheus_io_scrape equals 'true', // which means the user added prometheus.io/scrape: true in the service's annotation. In the general case, one scrape configuration specifies a single The above snippet will concatenate the values stored in __meta_kubernetes_pod_name and __meta_kubernetes_pod_container_port_number. Relabeler allows you to visually confirm the rules implemented by a relabel config. This is generally useful for blackbox monitoring of a service. Where must be unique across all scrape configurations. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? Configuration | Prometheus The other is for the CloudWatch agent configuration. My target configuration was via IP addresses (, it should work with hostnames and ips, since the replacement regex would split at. EC2 SD configurations allow retrieving scrape targets from AWS EC2 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. This set of targets consists of one or more Pods that have one or more defined ports. How is an ETF fee calculated in a trade that ends in less than a year? could be used to limit which samples are sent. The keep and drop actions allow us to filter out targets and metrics based on whether our label values match the provided regex. Denylisting becomes possible once youve identified a list of high-cardinality metrics and labels that youd like to drop. The instance role discovers one target per network interface of Nova For users with thousands of To learn more, please see Regular expression on Wikipedia. relabeling phase. This may be changed with relabeling. If it finds the instance_ip label, it renames this label to host_ip. tsdb lets you configure the runtime-reloadable configuration settings of the TSDB. So if there are some expensive metrics you want to drop, or labels coming from the scrape itself (e.g. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. I am attempting to retrieve metrics using an API and the curl response appears to be in the correct format. I have installed Prometheus on the same server where my Django app is running. One source of confusion around relabeling rules is that they can be found in multiple parts of a Prometheus config file. Short story taking place on a toroidal planet or moon involving flying. Prometheus will periodically check the REST endpoint and create a target for every discovered server. metric_relabel_configs are commonly used to relabel and filter samples before ingestion, and limit the amount of data that gets persisted to storage. See below for the configuration options for Triton discovery: Eureka SD configurations allow retrieving scrape targets using the Thanks for contributing an answer to Stack Overflow! After changing the file, the prometheus service will need to be restarted to pickup the changes. Prometheus supports relabeling, which allows performing the following tasks: Adding new label Updating existing label Rewriting existing label Updating metric name Removing unneeded labels. How relabeling in Prometheus works - Grafana Labs Relabeling and filtering at this stage modifies or drops samples before Prometheus ships them to remote storage. The hashmod action provides a mechanism for horizontally scaling Prometheus. For non-list parameters the configuration file. and exposes their ports as targets. Droplets API. Prometheus relabel_configs 4. 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. Use the following to filter IN metrics collected for the default targets using regex based filtering. valid JSON. Before applying these techniques, ensure that youre deduplicating any samples sent from high-availability Prometheus clusters. A blog on monitoring, scale and operational Sanity. This is generally useful for blackbox monitoring of an ingress. This will also reload any configured rule files. Each target has a meta label __meta_url during the 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. has the same configuration format and actions as target relabeling. Write relabeling is applied after external labels. metric_relabel_configs by contrast are applied after the scrape has happened, but before the data is ingested by the storage system. One is for the standard Prometheus configurations as documented in <scrape_config> in the Prometheus documentation. To scrape certain pods, specify the port, path, and scheme through annotations for the pod and the below job will scrape only the address specified by the annotation: More info about Internet Explorer and Microsoft Edge, Customize scraping of Prometheus metrics in Azure Monitor, the Debug Mode section in Troubleshoot collection of Prometheus metrics, create, validate, and apply the configmap, ama-metrics-prometheus-config-node configmap, Learn more about collecting Prometheus metrics. If the new configuration Prometheus 30- in the configuration file. Use metric_relabel_configs in a given scrape job to select which series and labels to keep, and to perform any label replacement operations. If you use quotes or backslashes in the regex, you'll need to escape them using a backslash. The last path segment metric_relabel_configs offers one way around that. If the relabel action results in a value being written to some label, target_label defines to which label the replacement should be written. Denylisting: This involves dropping a set of high-cardinality unimportant metrics that you explicitly define, and keeping everything else. Downloads. Grafana Cloud is the easiest way to get started with metrics, logs, traces, and dashboards. So the solution I used is to combine an existing value containing what we want (the hostnmame) with a metric from the node exporter. . They allow us to filter the targets returned by our SD mechanism, as well as manipulate the labels it sets. You can, for example, only keep specific metric names. Eureka REST API. We could offer this as an alias, to allow config file transition for Prometheus 3.x. So if you want to say scrape this type of machine but not that one, use relabel_configs. 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. See below for the configuration options for Eureka discovery: See the Prometheus eureka-sd configuration file The second relabeling rule adds {__keep="yes"} label to metrics with empty `mountpoint` label, e.g. to He Wu, Prometheus Users The `relabel_config` is applied to labels on the discovered scrape targets, while `metrics_relabel_config` is applied to metrics collected from scrape targets.. This is often useful when fetching sets of targets using a service discovery mechanism like kubernetes_sd_configs, or Kubernetes service discovery. It is very useful if you monitor applications (redis, mongo, any other exporter, etc. I've never encountered a case where that would matter, but hey sure if there's a better way, why not. WindowsyamlLinux. Aurora. All rights reserved. To specify which configuration file to load, use the --config.file flag. See below for the configuration options for PuppetDB discovery: See this example Prometheus configuration file This is to ensure that different components that consume this label will adhere to the basic alphanumeric convention. contexts. 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). from underlying pods), the following labels are attached. through the __alerts_path__ label. It reads a set of files containing a list of zero or more 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. This is often resolved by using metric_relabel_configs instead (the reverse has also happened, but it's far less common). The ingress role discovers a target for each path of each ingress. Prometheus Operator packaged by VMware - Customize alert relabel Using metric_relabel_configs, you can drastically reduce your Prometheus metrics usage by throwing out unneeded samples. Now what can we do with those building blocks? Prometheus needs to know what to scrape, and that's where service discovery and relabel_configs come in. Alertmanagers may be statically configured via the static_configs parameter or - Key: PrometheusScrape, Value: Enabled Why are physically impossible and logically impossible concepts considered separate in terms of probability? Prometheus K8SYaml K8S for a detailed example of configuring Prometheus for Docker Engine. Prometheus relabeling tricks - Medium Prometheus Relabel Config Examples - Ruan Bekker's Blog I'm working on file-based service discovery from a DB dump that will be able to write these targets out. It uses the $NODE_IP environment variable, which is already set for every ama-metrics addon container to target a specific port on the node: Custom scrape targets can follow the same format using static_configs with targets using the $NODE_IP environment variable and specifying the port to scrape. job. As metric_relabel_configs are applied to every scraped timeseries, it is better to improve instrumentation rather than using metric_relabel_configs as a workaround on the Prometheus side. You can add additional metric_relabel_configs sections that replace and modify labels here. 2023 The Linux Foundation. Marathon SD configurations allow retrieving scrape targets using the can be more efficient to use the Swarm API directly which has basic support for Customize scraping of Prometheus metrics in Azure Monitor (preview Scaleway SD configurations allow retrieving scrape targets from Scaleway instances and baremetal services. Since kubernetes_sd_configs will also add any other Pod ports as scrape targets (with role: endpoints), we need to filter these out using the __meta_kubernetes_endpoint_port_name relabel config. The nodes role is used to discover Swarm nodes. relabeling phase. k8s20230227_b-CSDN Prom Labss Relabeler tool may be helpful when debugging relabel configs. There are Mixins for Kubernetes, Consul, Jaeger, and much more. Refer to Apply config file section to create a configmap from the prometheus config. So now that we understand what the input is for the various relabel_config rules, how do we create one? 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. There is a list of Reload Prometheus and check out the targets page: Great! relabeling is completed. The cn role discovers one target for per compute node (also known as "server" or "global zone") making up the Triton infrastructure. dynamically discovered using one of the supported service-discovery mechanisms. sudo systemctl restart prometheus interval and timeout. PrometheusGrafana. The cluster label appended to every time series scraped will use the last part of the full AKS cluster's ARM resourceID. I have suggested calling it target_relabel_configs to differentiate it from metric_relabel_configs. relabel_configs vs metric_relabel_configs : r/PrometheusMonitoring ), but not system components (kubelet, node-exporter, kube-scheduler, .,) system components do not need most of the labels (endpoint . It expects an array of one or more label names, which are used to select the respective label values. address defaults to the host_ip attribute of the hypervisor. Relabel configs allow you to select which targets you want scraped, and what the target labels will be. These begin with two underscores and are removed after all relabeling steps are applied; that means they will not be available unless we explicitly configure them to. Service API. Set up and configure Prometheus metrics collection on Amazon EC2 First, it should be metric_relabel_configs rather than relabel_configs. It has the same configuration format and actions as target relabeling. Whats the grammar of "For those whose stories they are"? Scrape kube-state-metrics in the k8s cluster (installed as a part of the addon) without any extra scrape config. Example scrape_configs: # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config. instances. The Prometheus Cheatsheets | cheatsheets 5.6K subscribers in the PrometheusMonitoring community. 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. I see that the node exporter provides the metric node_uname_info that contains the hostname, but how do I extract it from there? Grafana Labs uses cookies for the normal operation of this website. compute resources. 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. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. configuration. prefix is guaranteed to never be used by Prometheus itself. create a target group for every app that has at least one healthy task. To bulk drop or keep labels, use the labelkeep and labeldrop actions. For example, the following block would set a label like {env="production"}, While, continuing with the previous example, this relabeling step would set the replacement value to my_new_label. 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 interface. Prometheus relabelmetrics path | Alliot's blog users with thousands of services it can be more efficient to use the Consul API Enter relabel_configs, a powerful way to change metric labels dynamically. Targets may be statically configured via the static_configs parameter or They are set by the service discovery mechanism that provided Prometheus queries: How to give a default label when it is missing? Metric relabeling is applied to samples as the last step before ingestion. The ama-metrics-prometheus-config-node configmap, similar to the regular configmap, can be created to have static scrape configs on each node. The scrape config should only target a single node and shouldn't use service discovery. Once the targets have been defined, the metric_relabel_configs steps are applied after the scrape and allow us to select which series we would like to ingest into Prometheus storage. configuration. For example, if the resource ID is /subscriptions/00000000-0000-0000-0000-000000000000/resourcegroups/rg-name/providers/Microsoft.ContainerService/managedClusters/clustername, the cluster label is clustername. The following snippet of configuration demonstrates an allowlisting approach, where the specified metrics are shipped to remote storage, and all others dropped. Catalog API. Choosing which metrics and samples to scrape, store, and ship to Grafana Cloud can seem quite daunting at first. The regex supports parenthesized capture groups which can be referred to later on. See below for the configuration options for Uyuni discovery: See the Prometheus uyuni-sd configuration file server sends alerts to. the cluster state. Lightsail SD configurations allow retrieving scrape targets from AWS Lightsail To learn how to do this, please see Sending data from multiple high-availability Prometheus instances. metrics_config | Grafana Agent documentation source_labels and separator Let's start off with source_labels. undefined - Coder v1 Docs The private IP address is used by default, but may be changed to the public IP Labels starting with __ will be removed from the label set after target 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 additional container ports of the pod, not bound to an endpoint port, are discovered as targets as well. Use the metric_relabel_configs section to filter metrics after scraping. The service role discovers a target for each service port for each service. The __scrape_interval__ and __scrape_timeout__ labels are set to the target's Yes, I know, trust me I don't like either but it's out of my control. Prometheus: monitoring services using additional scrape config for It also provides parameters to configure how to This SD discovers "monitoring assignments" based on Kuma Dataplane Proxies, In addition, the instance label for the node will be set to the node name So ultimately {__tmp=5} would be appended to the metrics label set. are published with mode=host. relabeling phase. 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 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. Serversets are commonly from the /metrics page) that you want to manipulate that's where metric_relabel_configs applies. Follow the instructions to create, validate, and apply the configmap for your cluster. Additional labels prefixed with __meta_ may be available during the When we configured Prometheus to run as a service, we specified the path of /etc/prometheus/prometheus.yml. Understanding and using the multi-target exporter pattern - Prometheus