For details on custom configuration, see Customize scraping of Prometheus metrics in Azure Monitor. Refresh the page, check Medium 's site status,. It is Basics; Curated Examples; Example Queries; Scrape Configs; Recording Rules; External Sources; Basics. The relabeling phase is the preferred and more powerful will periodically check the REST endpoint for currently running tasks and it was not set during relabeling. If you are running the Prometheus Operator (e.g. metric_relabel_configs offers one way around that. Refer to Apply config file section to create a configmap from the prometheus config. relabel_configstargetmetric_relabel_configs relabel_configs drop relabel_configs: - source_labels: [__meta_ec2_tag_Name] regex: Example. 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). The tasks role discovers all Swarm tasks To enable allowlisting in Prometheus, use the keep and labelkeep actions with any relabeling configuration. Step 2: Scrape Prometheus sources and import metrics. anchored on both ends. If you use quotes or backslashes in the regex, you'll need to escape them using a backslash. One source of confusion around relabeling rules is that they can be found in multiple parts of a Prometheus config file. Prometheus K8SYaml K8S The replace action is most useful when you combine it with other fields. Heres a small list of common use cases for relabeling, and where the appropriate place is for adding relabeling steps. 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. via Uyuni API. Most users will only need to define one instance. Sorry, an error occurred. Using metric_relabel_configs, you can drastically reduce your Prometheus metrics usage by throwing out unneeded samples. Each instance defines a collection of Prometheus-compatible scrape_configs and remote_write rules. To learn more about Prometheus service discovery features, please see Configuration from the Prometheus docs. Prometheus <__meta_consul_address>:<__meta_consul_service_port>. The new label will also show up in the cluster parameter dropdown in the Grafana dashboards instead of the default one. In addition, the instance label for the node will be set to the node name It is very useful if you monitor applications (redis, mongo, any other exporter, etc. See below for the configuration options for Kubernetes discovery: See this example Prometheus configuration file Configuration file To specify which configuration file to load, use the --config.file flag. It's not uncommon for a user to share a Prometheus config with a validrelabel_configs and wonder why it isn't taking effect. Catalog API. configuration. sending a HTTP POST request to the /-/reload endpoint (when the --web.enable-lifecycle flag is enabled). Sign up for free now! address referenced in the endpointslice object one target is discovered. See below for the configuration options for GCE discovery: Credentials are discovered by the Google Cloud SDK default client by looking Brackets indicate that a parameter is optional. 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. Now what can we do with those building blocks? If the new configuration The ama-metrics replicaset pod consumes the custom Prometheus config and scrapes the specified targets. rev2023.3.3.43278. To learn how to do this, please see Sending data from multiple high-availability Prometheus instances. 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 To un-anchor the regex, use .*.*. May 29, 2017. And what can they actually be used for? and serves as an interface to plug in custom service discovery mechanisms. Not the answer you're looking for? When metrics come from another system they often don't have labels. To drop a specific label, select it using source_labels and use a replacement value of "". Prometheusrelabel config sell prometheus Prometheus relabel config 1. scrapelabel node_exporternode_cpucpurelabel config 2. action=replace Targets may be statically configured via the static_configs parameter or An alertmanager_config section specifies Alertmanager instances the Prometheus If the relabel action results in a value being written to some label, target_label defines to which label the replacement should be written. Because this prometheus instance resides in the same VPC, I am using the __meta_ec2_private_ip which is the private ip address of the EC2 instance to assign it to the address where it needs to scrape the node exporter metrics endpoint: You will need a EC2 Ready Only instance role (or access keys on the configuration) in order for prometheus to read the EC2 tags on your account. with this feature. They are applied to the label set of each target in order of their appearance OpenStack SD configurations allow retrieving scrape targets from OpenStack Nova Denylisting: This involves dropping a set of high-cardinality unimportant metrics that you explicitly define, and keeping everything else. tracing_config configures exporting traces from Prometheus to a tracing backend via the OTLP protocol. You can also manipulate, transform, and rename series labels using relabel_config. metric_relabel_configs are commonly used to relabel and filter samples before ingestion, and limit the amount of data that gets persisted to storage. A scrape_config section specifies a set of targets and parameters describing how Note that exemplar storage is still considered experimental and must be enabled via --enable-feature=exemplar-storage. 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. 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. 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. (relabel_config) prometheus . Relabeling relabeling Prometheus Relabel By using the following relabel_configs snippet, you can limit scrape targets for this job to those whose Service label corresponds to app=nginx and port name to web: The initial set of endpoints fetched by kuberentes_sd_configs in the default namespace can be very large depending on the apps youre running in your cluster. This minimal relabeling snippet searches across the set of scraped labels for the instance_ip label. How do I align things in the following tabular environment? 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. To review, open the file in an editor that reveals hidden Unicode characters. So now that we understand what the input is for the various relabel_config rules, how do we create one? Otherwise the custom configuration will fail validation and won't be applied. The cn role discovers one target for per compute node (also known as "server" or "global zone") making up the Triton infrastructure. In this scenario, on my EC2 instances I have 3 tags: way to filter tasks, services or nodes. filtering containers (using filters). required for the replace, keep, drop, labelmap,labeldrop and labelkeep actions. configuration file. If the endpoint is backed by a pod, all Which seems odd. Prom Labss Relabeler tool may be helpful when debugging relabel configs. This is most commonly used for sharding multiple targets across a fleet of Prometheus instances. Only alphanumeric characters are allowed. For each declared Each target has a meta label __meta_filepath during the I've never encountered a case where that would matter, but hey sure if there's a better way, why not. yamlyaml. with kube-prometheus-stack) then you can specify additional scrape config jobs to monitor your custom services. First, it should be metric_relabel_configs rather than relabel_configs. And if one doesn't work you can always try the other! 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. As an example, consider the following two metrics. How is an ETF fee calculated in a trade that ends in less than a year? The relabeling step calculates the MD5 hash of the concatenated label values modulo a positive integer N, resulting in a number in the range [0, N-1]. I just came across this problem and the solution is to use a group_left to resolve this problem. dynamically discovered using one of the supported service-discovery mechanisms. Before applying these techniques, ensure that youre deduplicating any samples sent from high-availability Prometheus clusters. For example "test\'smetric\"s\"" and testbackslash\\*. Hetzner Cloud API and Lets start off with source_labels. configuration file, the Prometheus linode-sd 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. 1Prometheus. node_uname_info{nodename} -> instance -- I get a syntax error at startup. is any valid Well demo all the highlights of the major release: new and updated visualizations and themes, data source improvements, and Enterprise features. Grafana Labs uses cookies for the normal operation of this website. Sorry, an error occurred. Serversets are commonly Overview. So without further ado, lets get into it! Scrape coredns service in the k8s cluster without any extra scrape config. 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 prefix is guaranteed to never be used by Prometheus itself. for a detailed example of configuring Prometheus for Docker Swarm. Since the (. To allowlist metrics and labels, you should identify a set of core important metrics and labels that youd like to keep. This reduced set of targets corresponds to Kubelet https-metrics scrape endpoints. For users with thousands of Find centralized, trusted content and collaborate around the technologies you use most. 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: (. The scrape config below uses the __meta_* labels added from the kubernetes_sd_configs for the pod role to filter for pods with certain annotations. // Config is the top-level configuration for Prometheus's config files. They allow us to filter the targets returned by our SD mechanism, as well as manipulate the labels it sets. You can add additional metric_relabel_configs sections that replace and modify labels here. The label will end with '.pod_node_name'. relabel_configs. Note that the IP number and port used to scrape the targets is assembled as So as a simple rule of thumb: relabel_config happens before the scrape,metric_relabel_configs happens after the scrape. Yes, I know, trust me I don't like either but it's out of my control. service port. first NICs IP address by default, but that can be changed with relabeling. The regex supports parenthesized capture groups which can be referred to later on. Much of the content here also applies to Grafana Agent users. Relabelling. 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. Each target has a meta label __meta_url during the But what I found to actually work is the simple and so blindingly obvious that I didn't think to even try: I.e., simply applying a target label in the scrape config. Prometheus also provides some internal labels for us. This is experimental and could change in the future. The labelmap action is used to map one or more label pairs to different label names. refresh failures. Changes to all defined files are detected via disk watches Docker SD configurations allow retrieving scrape targets from Docker Engine hosts. *), so if not specified, it will match the entire input. Its value is set to the Using the write_relabel_config entry shown below, you can target the metric name using the __name__ label in combination with the instance name. 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. and exposes their ports as targets. engine. configuration file, the Prometheus uyuni-sd configuration file, the Prometheus vultr-sd support for filtering instances. Marathon SD configurations allow retrieving scrape targets using the Latest Published: Jan 31, 2023 License: Apache-2.0 Imports: 18 Imported by: 2,025 Details Valid go.mod file Redistributable license Tagged version