prometheus relabel_configs vs metric_relabel_configs

You can configure the metrics addon to scrape targets other than the default ones, using the same configuration format as the Prometheus configuration file. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. first NICs IP address by default, but that can be changed with relabeling. with this feature. The labelkeep and labeldrop actions allow for filtering the label set itself. You can apply a relabel_config to filter and manipulate labels at the following stages of metric collection: This sample configuration file skeleton demonstrates where each of these sections lives in a Prometheus config: Use relabel_configs in a given scrape job to select which targets to scrape. IONOS Cloud API. Latest Published: Jan 31, 2023 License: Apache-2.0 Imports: 18 Imported by: 2,025 Details Valid go.mod file Redistributable license Tagged version It also provides parameters to configure how to 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.). I'm also loathe to fork it and have to maintain in parallel with upstream, I have neither the time nor the karma. Avoid downtime. How can they help us in our day-to-day work? for a practical example on how to set up your Eureka app and your Prometheus Use metric_relabel_configs in a given scrape job to select which series and labels to keep, and to perform any label replacement operations. The endpoint is queried periodically at the specified refresh interval. This set of targets consists of one or more Pods that have one or more defined ports. the given client access and secret keys. 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). for a detailed example of configuring Prometheus for Kubernetes. [prometheus URL]:9090/targets target endpoint Before relabeling __metrics_path__ label relabel relabel static config from underlying pods), the following labels are attached. 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. They also serve as defaults for other configuration sections. Omitted fields take on their default value, so these steps will usually be shorter. The HAProxy metrics have been discovered by Prometheus. On the federation endpoint Prometheus can add labels When sending alerts we can alter alerts labels engine. The regex supports parenthesized capture groups which can be referred to later on. Relabeler allows you to visually confirm the rules implemented by a relabel config. Why are physically impossible and logically impossible concepts considered separate in terms of probability? inside a Prometheus-enabled mesh. To un-anchor the regex, use .*.*. First attempt: In order to set the instance label to $host, one can use relabel_configs to get rid of the port of your scaping target: But the above would also overwrite labels you wanted to set e.g. discovery endpoints. The target address defaults to the first existing address of the Kubernetes . configuration. Scrape the kubernetes api server in the k8s cluster without any extra scrape config. We drop all ports that arent named web. Sorry, an error occurred. 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. Lightsail SD configurations allow retrieving scrape targets from AWS Lightsail After changing the file, the prometheus service will need to be restarted to pickup the changes. For reference, heres our guide to Reducing Prometheus metrics usage with relabeling. See below for the configuration options for OVHcloud discovery: PuppetDB SD configurations allow retrieving scrape targets from I'm not sure if that's helpful. Zookeeper. It does so by replacing the labels for scraped data by regexes with relabel_configs. Hope you learned a thing or two about relabeling rules and that youre more comfortable with using them. The __address__ label is set to the : address of the target. sudo systemctl restart prometheus The ama-metrics replicaset pod consumes the custom Prometheus config and scrapes the specified targets. This documentation is open-source. 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. This service discovery uses the public IPv4 address by default, by that can be When we configured Prometheus to run as a service, we specified the path of /etc/prometheus/prometheus.yml. Now what can we do with those building blocks? metric_relabel_configs offers one way around that. Use Grafana to turn failure into resilience. This is most commonly used for sharding multiple targets across a fleet of Prometheus instances. Note: By signing up, you agree to be emailed related product-level information. target is generated. 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. The difference between the phonemes /p/ and /b/ in Japanese. It reads a set of files containing a list of zero or more Serverset data must be in the JSON format, the Thrift format is not currently supported. may contain a single * that matches any character sequence, e.g. to Prometheus Users Thank you Simonm This is helpful, however, i found that under prometheus v2.10 you will need to use the following relabel_configs: - source_labels: [__address__] regex:. has the same configuration format and actions as target relabeling. Using metric_relabel_configs, you can drastically reduce your Prometheus metrics usage by throwing out unneeded samples. The IAM credentials used must have the ec2:DescribeInstances permission to to the Kubelet's HTTP port. 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. So ultimately {__tmp=5} would be appended to the metrics label set. are published with mode=host. PrometheusGrafana. Downloads. If a task has no published ports, a target per task is relabeling phase. for a detailed example of configuring Prometheus with PuppetDB. 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. interface. 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. OAuth 2.0 authentication using the client credentials grant type. 5.6K subscribers in the PrometheusMonitoring community. By default, all apps will show up as a single job in Prometheus (the one specified created using the port parameter defined in the SD configuration. Hetzner Cloud API and Azure SD configurations allow retrieving scrape targets from Azure VMs. Extracting labels from legacy metric names. , __name__ () node_cpu_seconds_total mode idle (drop). Only Prom Labss Relabeler tool may be helpful when debugging relabel configs. Marathon SD configurations allow retrieving scrape targets using the I have suggested calling it target_relabel_configs to differentiate it from metric_relabel_configs. To learn more about remote_write, please see remote_write from the official Prometheus docs. 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. RE2 regular expression. where should i use this in prometheus? Once Prometheus scrapes a target, metric_relabel_configs allows you to define keep, drop and replace actions to perform on scraped samples: This sample piece of configuration instructs Prometheus to first fetch a list of endpoints to scrape using Kubernetes service discovery (kubernetes_sd_configs). 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 A relabel_configs configuration allows you to keep or drop targets returned by a service discovery mechanism like Kubernetes service discovery or AWS EC2 instance service discovery. DigitalOcean SD configurations allow retrieving scrape targets from DigitalOcean's is it query? This is generally useful for blackbox monitoring of a service. If the new configuration ), the The relabel_configs section is applied at the time of target discovery and applies to each target for the job. through the __alerts_path__ label. determines the relabeling action to take: Care must be taken with labeldrop and labelkeep to ensure that metrics are 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]. The private IP address is used by default, but may be changed to the public IP relabel_configs. Which seems odd. To play around with and analyze any regular expressions, you can use RegExr. metrics without this label. Step 2: Scrape Prometheus sources and import metrics. - the incident has nothing to do with me; can I use this this way? kube-state-metricsAPI ServerDeploymentNodePodkube-state-metricsmetricsPrometheus . The __scrape_interval__ and __scrape_timeout__ labels are set to the target's 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. One use for this is ensuring a HA pair of Prometheus servers with different If running outside of GCE make sure to create an appropriate Write relabeling is applied after external labels. directly which has basic support for filtering nodes (currently by node metadata and a single tag). changed with relabeling, as demonstrated in the Prometheus scaleway-sd write_relabel_configs is relabeling applied to samples before sending them When custom scrape configuration fails to apply due to validation errors, default scrape configuration will continue to be used. This is to ensure that different components that consume this label will adhere to the basic alphanumeric convention. A static config has a list of static targets and any extra labels to add to them. *), so if not specified, it will match the entire input. In our config, we only apply a node-exporter scrape config to instances which are tagged PrometheusScrape=Enabled, then we use the Name tag, and assign its value to the instance tag, and the similarly we assign the Environment tag value to the environment promtheus label value. locations, amount of data to keep on disk and in memory, etc. The label will end with '.pod_node_name'. configuration file, the Prometheus uyuni-sd configuration file, the Prometheus vultr-sd The file is written in YAML format, metric_relabel_configs relabel_configsreplace Prometheus K8S . configuration. filtering nodes (using filters). Tags: prometheus, relabelling. This configuration does not impact any configuration set in metric_relabel_configs or relabel_configs. 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). Its value is set to the So without further ado, lets get into it! A Prometheus configuration may contain an array of relabeling steps; they are applied to the label set in the order they're defined in. Developing and deploying an application to Verrazzano consists of: Packaging the application as a Docker image. To learn more about Prometheus service discovery features, please see Configuration from the Prometheus docs. See below for the configuration options for Triton discovery: Eureka SD configurations allow retrieving scrape targets using the Currently supported are the following sections: Any other unsupported sections need to be removed from the config before applying as a configmap. in the configuration file), which can also be changed using relabeling. metric_relabel_configsmetric . Kubernetes' REST API and always staying synchronized with for them. The address will be set to the Kubernetes DNS name of the service and respective 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: Vultr SD configurations allow retrieving scrape targets from Vultr. way to filter containers. Prometheus will periodically check the REST endpoint and create a target for every discovered server. Metric relabeling is applied to samples as the last step before ingestion. Docker SD configurations allow retrieving scrape targets from Docker Engine hosts. changes resulting in well-formed target groups are applied. Or if youre using Prometheus Kubernetes service discovery you might want to drop all targets from your testing or staging namespaces. Why do academics stay as adjuncts for years rather than move around? Serverset SD configurations allow retrieving scrape targets from Serversets which are You may wish to check out the 3rd party Prometheus Operator, Email [email protected] for help. record queries, but not the advanced DNS-SD approach specified in You can add additional metric_relabel_configs sections that replace and modify labels here. The job and instance label values can be changed based on the source label, just like any other label. the command-line flags configure immutable system parameters (such as storage Please find below an example from other exporter (blackbox), but same logic applies for node exporter as well. Alert via Uyuni API. Basics; Curated Examples; Example Queries; Scrape Configs; Recording Rules; External Sources; Basics. by the API. This will also reload any configured rule files. This is often resolved by using metric_relabel_configs instead (the reverse has also happened, but it's far less common). See below for the configuration options for GCE discovery: Credentials are discovered by the Google Cloud SDK default client by looking relabel_configsmetric_relabel_configssource_labels CC 4.0 BY-SA . for a detailed example of configuring Prometheus for Docker Swarm. for a practical example on how to set up your Marathon app and your Prometheus Short story taking place on a toroidal planet or moon involving flying. *) regex captures the entire label value, replacement references this capture group, $1, when setting the new target_label. Blog | Training | Book | Privacy, relabel_configs vs metric_relabel_configs. 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 a container has no specified ports, Finally, use write_relabel_configs in a remote_write configuration to select which series and labels to ship to remote storage. Yes, I know, trust me I don't like either but it's out of my control. 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. This article provides instructions on customizing metrics scraping for a Kubernetes cluster with the metrics addon in Azure Monitor. # prometheus $ vim /usr/local/prometheus/prometheus.yml $ sudo systemctl restart prometheus 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. In this scenario, on my EC2 instances I have 3 tags: Where must be unique across all scrape configurations. 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. The last relabeling rule drops all the metrics without {__keep="yes"} label. See below for the configuration options for Docker Swarm discovery: The relabeling phase is the preferred and more powerful Most users will only need to define one instance. 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. The default Prometheus configuration file contains the following two relabeling configurations: - action: replace source_labels: [__meta_kubernetes_pod_uid] target_label: sysdig_k8s_pod_uid - action: replace source_labels: [__meta_kubernetes_pod_container_name] target_label: sysdig_k8s_pod_container_name and exposes their ports as targets. All rights reserved. Before applying these techniques, ensure that youre deduplicating any samples sent from high-availability Prometheus clusters. will periodically check the REST endpoint and How do I align things in the following tabular environment? Thanks for contributing an answer to Stack Overflow! After concatenating the contents of the subsystem and server labels, we could drop the target which exposes webserver-01 by using the following block. Three different configmaps can be configured to change the default settings of the metrics addon: The ama-metrics-settings-configmap can be downloaded, edited, and applied to the cluster to customize the out-of-the-box features of the metrics addon. The following meta labels are available for each target: See below for the configuration options for Kuma MonitoringAssignment discovery: The relabeling phase is the preferred and more powerful way Prometheus Monitoring subreddit. Lets start off with source_labels. With a (partial) config that looks like this, I was able to achieve the desired result. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? For all targets discovered directly from the endpointslice list (those not additionally inferred In many cases, heres where internal labels come into play. Why is there a voltage on my HDMI and coaxial cables? The ingress role discovers a target for each path of each ingress. Open positions, Check out the open source projects we support This will also reload any configured rule files. The relabeling phase is the preferred and more powerful Multiple relabeling steps can be configured per scrape configuration. discovery mechanism. This piece of remote_write configuration sets the remote endpoint to which Prometheus will push samples. Using a standard prometheus config to scrape two targets: There is a list of Tracing is currently an experimental feature and could change in the future. The result of the concatenation is the string node-42 and the MD5 of the string modulus 8 is 5. If the relabel action results in a value being written to some label, target_label defines to which label the replacement should be written. Linode APIv4. Refresh the page, check Medium 's site status,. Additional labels prefixed with __meta_ may be available during the Mixins are a set of preconfigured dashboards and alerts. still uniquely labeled once the labels are removed. To learn how to discover high-cardinality metrics, please see Analyzing Prometheus metric usage. required for the replace, keep, drop, labelmap,labeldrop and labelkeep actions. Choosing which metrics and samples to scrape, store, and ship to Grafana Cloud can seem quite daunting at first. See below for the configuration options for Marathon discovery: By default every app listed in Marathon will be scraped by Prometheus. 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 If not all

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