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 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. Enter relabel_configs, a powerful way to change metric labels dynamically. To enable denylisting in Prometheus, use the drop and labeldrop actions with any relabeling configuration. To bulk drop or keep labels, use the labelkeep and labeldrop actions. Alert relabeling is applied to alerts before they are sent to the Alertmanager. If a task has no published ports, a target per task is A blog on monitoring, scale and operational Sanity. configuration. Relabeling is a powerful tool to dynamically rewrite the label set of a target before 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. Downloads. changed with relabeling, as demonstrated in the Prometheus digitalocean-sd A tls_config allows configuring TLS connections. Finally, the modulus field expects a positive integer. Published by Brian Brazil in Posts Tags: prometheus, relabelling, service discovery Share on Blog | Training | Book | Privacy Kubernetes' REST API and always staying synchronized with Whats the grammar of "For those whose stories they are"? relabel_configsmetric_relabel_configssource_labels CC 4.0 BY-SA There is a list of See below for the configuration options for Eureka discovery: See the Prometheus eureka-sd configuration file 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). The __meta_dockerswarm_network_* meta labels are not populated for ports which And if one doesn't work you can always try the other! 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. After concatenating the contents of the subsystem and server labels, we could drop the target which exposes webserver-01 by using the following block. instances. This feature allows you to filter through series labels using regular expressions and keep or drop those that match. Blog | Training | Book | Privacy, relabel_configs vs metric_relabel_configs. Only This guide describes several techniques you can use to reduce your Prometheus metrics usage on Grafana Cloud. 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. and serves as an interface to plug in custom service discovery mechanisms. Kuma SD configurations allow retrieving scrape target from the Kuma control plane. The PromQL queries that power these dashboards and alerts reference a core set of important observability metrics. - targets: ['localhost:8070'] scheme: http metric_relabel_configs: - source_labels: [__name__] regex: 'organizations_total|organizations_created' action . filtering containers (using filters). For each endpoint In addition, the instance label for the node will be set to the node name Default targets are scraped every 30 seconds. You can add additional metric_relabel_configs sections that replace and modify labels here. The port of a container, a single target is generated. The private IP address is used by default, but may be changed to Sign up for free now! Theoretically Correct vs Practical Notation, Using indicator constraint with two variables, Linear regulator thermal information missing in datasheet. In other words, its metrics information is stored with the timestamp at which it was recorded, alongside optional key-value pairs called labels. Using metric_relabel_configs, you can drastically reduce your Prometheus metrics usage by throwing out unneeded samples. Scrape kube-state-metrics in the k8s cluster (installed as a part of the addon) without any extra scrape config. 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. A static_config allows specifying a list of targets and a common label set 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. s. .). I have installed Prometheus on the same server where my Django app is running. In the previous example, we may not be interested in keeping track of specific subsystems labels anymore. Use Grafana to turn failure into resilience. Finally, the write_relabel_configs block applies relabeling rules to the data just before its sent to a remote endpoint. Downloads. (relabel_config) prometheus . integrations 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. feature to replace the special __address__ label. Also, your values need not be in single quotes. The scrape config should only target a single node and shouldn't use service discovery. relabeling phase. Tags: prometheus, relabelling. configuration file, the Prometheus uyuni-sd configuration file, the Prometheus vultr-sd Otherwise each node will try to scrape all targets and will make many calls to the Kubernetes API server. First off, the relabel_configs key can be found as part of a scrape job definition. Extracting labels from legacy metric names. 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 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. Use the metric_relabel_configs section to filter metrics after scraping. Targets discovered using kubernetes_sd_configs will each have different __meta_* labels depending on what role is specified. 5.6K subscribers in the PrometheusMonitoring community. for a detailed example of configuring Prometheus for Docker Engine. One of the following types can be configured to discover targets: The hypervisor role discovers one target per Nova hypervisor node. Yes, I know, trust me I don't like either but it's out of my control. The labelmap action is used to map one or more label pairs to different label names. This is experimental and could change in the future. There are Mixins for Kubernetes, Consul, Jaeger, and much more. These relabeling steps are applied before the scrape occurs and only have access to labels added by Prometheus Service Discovery. The cluster label appended to every time series scraped will use the last part of the full AKS cluster's ARM resourceID. For users with thousands of containers it Reload Prometheus and check out the targets page: Great! Relabeling and filtering at this stage modifies or drops samples before Prometheus ingests them locally and ships them to remote storage. The label will end with '.pod_node_name'. 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. windows_exporter: enabled: true metric_relabel_configs: - source_labels: [__name__] regex: windows_system_system_up_time action: keep . Hetzner SD configurations allow retrieving scrape targets from Denylisting: This involves dropping a set of high-cardinality unimportant metrics that you explicitly define, and keeping everything else. The cn role discovers one target for per compute node (also known as "server" or "global zone") making up the Triton infrastructure. relabeling. The target - ip-192-168-64-29.multipass:9100 If the extracted value matches the given regex, then replacement gets populated by performing a regex replace and utilizing any previously defined capture groups. For a cluster with a large number of nodes and pods and a large volume of metrics to scrape, some of the applicable custom scrape targets can be off-loaded from the single ama-metrics replicaset pod to the ama-metrics daemonset pod. changed with relabeling, as demonstrated in the Prometheus scaleway-sd additional container ports of the pod, not bound to an endpoint port, are discovered as targets as well. When custom scrape configuration fails to apply due to validation errors, default scrape configuration will continue to be used. 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. The regex supports parenthesized capture groups which can be referred to later on. metric_relabel_configs are commonly used to relabel and filter samples before ingestion, and limit the amount of data that gets persisted to storage. node_uname_info{nodename} -> instance -- I get a syntax error at startup. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. However, in some If a service has no published ports, a target per is not well-formed, the changes will not be applied. I've been trying in vai for a month to find a coherent explanation of group_left, and expressions aren't labels. The service role discovers a target for each service port for each service. Grafana Labs uses cookies for the normal operation of this website. metrics without this label. In this case Prometheus would drop a metric like container_network_tcp_usage_total(. 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. "After the incident", I started to be more careful not to trip over things. Consul setups, the relevant address is in __meta_consul_service_address. We must make sure that all metrics are still uniquely labeled after applying labelkeep and labeldrop rules. The nodes role is used to discover Swarm nodes. metric_relabel_configs relabel_configsreplace Prometheus K8S . my/path/tg_*.json. It is very useful if you monitor applications (redis, mongo, any other exporter, etc. which automates the Prometheus setup on top of Kubernetes. It is domain names which are periodically queried to discover a list of targets. The CloudWatch agent with Prometheus monitoring needs two configurations to scrape the Prometheus metrics. used by Finagle and Read more. We drop all ports that arent named web. We have a generous free forever tier and plans for every use case. DNS servers to be contacted are read from /etc/resolv.conf. configuration file. Where may be a path ending in .json, .yml or .yaml. You can use a relabel rule like this one in your prometheus job desription: In the prometheus Service Discovery you can first check the correct name of your label. 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. Next I tried metrics_relabel_configs but that doesn't seem to want to copy a label from a different metric, ie. As an example, consider the following two metrics. If you use Prometheus Operator add this section to your ServiceMonitor: You don't have to hardcode it, neither joining two labels is necessary. For each published port of a task, a single configuration. 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. A DNS-based service discovery configuration allows specifying a set of DNS Each target has a meta label __meta_url during the To further customize the default jobs to change properties such as collection frequency or labels, disable the corresponding default target by setting the configmap value for the target to false, and then apply the job using custom configmap. 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). See below for the configuration options for EC2 discovery: The relabeling phase is the preferred and more powerful If were using Prometheus Kubernetes SD, our targets would temporarily expose some labels such as: Labels starting with double underscores will be removed by Prometheus after relabeling steps are applied, so we can use labelmap to preserve them by mapping them to a different name. Service API. Avoid downtime. Email update@grafana.com for help. For each endpoint For all targets discovered directly from the endpoints list (those not additionally inferred To learn more about remote_write configuration parameters, please see remote_write from the Prometheus docs. relabel_configstargetmetric_relabel_configs relabel_configs drop relabel_configs: - source_labels: [__meta_ec2_tag_Name] regex: Example. 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 This occurs after target selection using relabel_configs. If running outside of GCE make sure to create an appropriate ), but not system components (kubelet, node-exporter, kube-scheduler, .,) system components do not need most of the labels (endpoint . First, it should be metric_relabel_configs rather than relabel_configs. The replace action is most useful when you combine it with other fields. Relabeling 4.1 . Where must be unique across all scrape configurations. discover scrape targets, and may optionally have the configuration file. will periodically check the REST endpoint for currently running tasks and Hetzner Cloud API and So without further ado, lets get into it! See below for the configuration options for PuppetDB discovery: See this example Prometheus configuration file If the new configuration // Config is the top-level configuration for Prometheus's config files. Additional helpful documentation, links, and articles: How to set up and visualize synthetic monitoring at scale with Grafana Cloud, Using Grafana Cloud to drive manufacturing plant efficiency. WindowsyamlLinux. address with relabeling. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? 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. The __* labels are dropped after discovering the targets. 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. Note that adding an additional scrape . This SD discovers "containers" and will create a target for each network IP and port the container is configured to expose. Prometheus is an open-source monitoring and alerting toolkit that collects and stores its metrics as time series data. . 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. Advanced Setup: Configure custom Prometheus scrape jobs for the daemonset The configuration format is the same as the Prometheus configuration file. 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. To enable allowlisting in Prometheus, use the keep and labelkeep actions with any relabeling configuration. address defaults to the host_ip attribute of the hypervisor. relabeling: Kubernetes SD configurations allow retrieving scrape targets from Both of these methods are implemented through Prometheuss metric filtering and relabeling feature, relabel_config. May 30th, 2022 3:01 am This service discovery uses the 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. 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.