prometheus relabel_configs vs metric_relabel_configs prometheus relabel_configs vs metric_relabel_configs

Thanks for reading, if you like my content, check out my website, read my newsletter or follow me at @ruanbekker on Twitter. There is a list of This service discovery uses the public IPv4 address by default, by that can be for a practical example on how to set up your Eureka app and your Prometheus to the remote endpoint. discover scrape targets, and may optionally have the Triton SD configurations allow retrieving The following snippet of configuration demonstrates an allowlisting approach, where the specified metrics are shipped to remote storage, and all others dropped. So without further ado, lets get into it! instances. ), the Hetzner SD configurations allow retrieving scrape targets from It may be a factor that my environment does not have DNS A or PTR records for the nodes in question. To learn how to do this, please see Sending data from multiple high-availability Prometheus instances. Why is there a voltage on my HDMI and coaxial cables? contexts. 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. The relabeling phase is the preferred and more powerful This See below for the configuration options for PuppetDB discovery: See this example Prometheus configuration file create a target for every app instance. We have a generous free forever tier and plans for every use case. 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. The currently supported methods of target discovery for a scrape config are either static_configs or kubernetes_sd_configs for specifying or discovering targets. Docker Swarm SD configurations allow retrieving scrape targets from Docker Swarm The address will be set to the host specified in the ingress spec. configuration file, the Prometheus linode-sd Refresh the page, check Medium 's site status,. IONOS Cloud API. source_labels and separator Let's start off with source_labels. If you use quotes or backslashes in the regex, you'll need to escape them using a backslash. Write relabeling is applied after external labels. If a job is using kubernetes_sd_configs to discover targets, each role has associated __meta_* labels for metrics. Downloads. The endpoint is queried periodically at the specified refresh interval. To enable allowlisting in Prometheus, use the keep and labelkeep actions with any relabeling configuration. discovery endpoints. is not well-formed, the changes will not be applied. A scrape_config section specifies a set of targets and parameters describing how 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. If a service has no published ports, a target per metrics_config The metrics_config block is used to define a collection of metrics instances. Below are examples of how to do so. It does so by replacing the labels for scraped data by regexes with relabel_configs. This is experimental and could change in the future. Posted by Ruan in the configuration file), which can also be changed using relabeling. There are Mixins for Kubernetes, Consul, Jaeger, and much more. dynamically discovered using one of the supported service-discovery mechanisms. I'm not sure if that's helpful. metadata and a single tag). metric_relabel_configs /metricsmetric_relabel_configs 3.2.2 alertmanagers alertmanagers Prometheus alertmanagers Prometheuspushing alertmanager alertmanager target By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. view raw prometheus.yml hosted with by GitHub , Prometheus . Prometheus also provides some internal labels for us. You can add additional metric_relabel_configs sections that replace and modify labels here. prefix is guaranteed to never be used by Prometheus itself. Published by Brian Brazil in Posts Tags: prometheus, relabelling, service discovery Share on Blog | Training | Book | Privacy You can additionally define remote_write-specific relabeling rules here. Tags: prometheus, relabelling. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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 For each published port of a task, a single Brackets indicate that a parameter is optional. Why does Mister Mxyzptlk need to have a weakness in the comics? 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. Use the following to filter IN metrics collected for the default targets using regex based filtering. for them. So ultimately {__tmp=5} would be appended to the metrics label set. For example, kubelet is the metric filtering setting for the default target kubelet. To learn more about remote_write configuration parameters, please see remote_write from the Prometheus docs. This service discovery uses the public IPv4 address by default, by that can be Omitted fields take on their default value, so these steps will usually be shorter. still uniquely labeled once the labels are removed. They are applied to the label set of each target in order of their appearance The regex supports parenthesized capture groups which can be referred to later on. 3. Catalog API. A DNS-based service discovery configuration allows specifying a set of DNS prometheus.yml This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. anchored on both ends. 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. relabeling is completed. Eureka REST API. The relabel_configs section is applied at the time of target discovery and applies to each target for the job. If not all For example, if a Pod backing the Nginx service has two ports, we only scrape the port named web and drop the other. the cluster state. 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. For a list of trademarks of The Linux Foundation, please see our Trademark Usage page. Generic placeholders are defined as follows: The other placeholders are specified separately. 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. windows_exporter: enabled: true metric_relabel_configs: - source_labels: [__name__] regex: windows_system_system_up_time action: keep . by the API. Published by Brian Brazil in Posts. This configuration does not impact any configuration set in metric_relabel_configs or relabel_configs. So if there are some expensive metrics you want to drop, or labels coming from the scrape itself (e.g. Changes to all defined files are detected via disk watches This service discovery uses the public IPv4 address by default, but that can be If shipping samples to Grafana Cloud, you also have the option of persisting samples locally, but preventing shipping to remote storage. So the solution I used is to combine an existing value containing what we want (the hostnmame) with a metric from the node exporter. One of the following role types can be configured to discover targets: The node role discovers one target per cluster node with the address defaulting See the Prometheus examples of scrape configs for a Kubernetes cluster. Both of these methods are implemented through Prometheuss metric filtering and relabeling feature, relabel_config. The target address defaults to the private IP address of the network Avoid downtime. The address will be set to the Kubernetes DNS name of the service and respective 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. In the previous example, we may not be interested in keeping track of specific subsystems labels anymore. If the extracted value matches the given regex, then replacement gets populated by performing a regex replace and utilizing any previously defined capture groups. configuration. Alert relabeling is applied to alerts before they are sent to the Alertmanager. The CloudWatch agent with Prometheus monitoring needs two configurations to scrape the Prometheus metrics. To do this, use a relabel_config object in the write_relabel_configs subsection of the remote_write section of your Prometheus config. Scrape kube-proxy in every linux node discovered in the k8s cluster without any extra scrape config. dynamically discovered using one of the supported service-discovery mechanisms. relabeling phase. This can be used to filter metrics with high cardinality or route metrics to specific remote_write targets. create a target group for every app that has at least one healthy task. After concatenating the contents of the subsystem and server labels, we could drop the target which exposes webserver-01 by using the following block. refresh interval. entities and provide advanced modifications to the used API path, which is exposed configuration file, the Prometheus marathon-sd configuration file, the Prometheus eureka-sd configuration file, the Prometheus scaleway-sd yamlyaml. If the endpoint is backed by a pod, all This documentation is open-source. The default value of the replacement is $1, so it will match the first capture group from the regex or the entire extracted value if no regex was specified. configuration file defines everything related to scraping jobs and their 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. 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. Grafana Cloud is the easiest way to get started with metrics, logs, traces, and dashboards. 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 . Let's focus on one of the most common confusions around relabelling. Next, using relabel_configs, only Endpoints with the Service Label k8s_app=kubelet are kept. of your services provide Prometheus metrics, you can use a Marathon label and Publishing the application's Docker image to a containe 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. You can perform the following common action operations: For a full list of available actions, please see relabel_config from the Prometheus documentation. 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. . Advanced Setup: Configure custom Prometheus scrape jobs for the daemonset The account must be a Triton operator and is currently required to own at least one container. For each endpoint If you use Prometheus Operator add this section to your ServiceMonitor: You don't have to hardcode it, neither joining two labels is necessary. configuration file, this example Prometheus configuration file, the Prometheus hetzner-sd service port. However, in some (relabel_config) prometheus . For users with thousands of tasks it What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? refresh failures. interface. Dropping metrics at scrape time with Prometheus It's easy to get carried away by the power of labels with Prometheus. How is an ETF fee calculated in a trade that ends in less than a year? 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 The labels can be used in the relabel_configs section to filter targets or replace labels for the targets. This piece of remote_write configuration sets the remote endpoint to which Prometheus will push samples. 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. See below for the configuration options for Lightsail discovery: Linode SD configurations allow retrieving scrape targets from Linode's Prometheus needs to know what to scrape, and that's where service discovery and relabel_configs come in. One source of confusion around relabeling rules is that they can be found in multiple parts of a Prometheus config file. Note: By signing up, you agree to be emailed related product-level information. will periodically check the REST endpoint for currently running tasks and instances it can be more efficient to use the EC2 API directly which has address one target is discovered per port. So if you want to say scrape this type of machine but not that one, use relabel_configs. Next I came across something that said that Prom will fill in instance with the value of address if the collector doesn't supply a value, and indeed for some reason it seems as though my scrapes of node_exporter aren't getting one. You can extract a samples metric name using the __name__ meta-label. The replacement field defaults to just $1, the first captured regex, so its sometimes omitted. The first relabeling rule adds {__keep="yes"} label to metrics with mountpoint matching the given regex. port of a container, a single target is generated. 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. There is a small demo of how to use Prometheus #Prometheus SoundCloud (TSDB).2012, Prometheus,.Prometheus 2016 CNCF ( Cloud Native Computing Fou. * action: drop metric_relabel_configs domain names which are periodically queried to discover a list of targets. for a practical example on how to set up your Marathon app and your Prometheus It fetches targets from an HTTP endpoint containing a list of zero or more After changing the file, the prometheus service will need to be restarted to pickup the changes. How do I align things in the following tabular environment? Vultr SD configurations allow retrieving scrape targets from Vultr. integrations sending a HTTP POST request to the /-/reload endpoint (when the --web.enable-lifecycle flag is enabled). The extracted string would then be set written out to the target_label and might result in {address="podname:8080}. For reference, heres our guide to Reducing Prometheus metrics usage with relabeling. Remote development environments that secure your source code and sensitive data I've never encountered a case where that would matter, but hey sure if there's a better way, why not. 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. A static config has a list of static targets and any extra labels to add to them. address defaults to the host_ip attribute of the hypervisor. from the /metrics page) that you want to manipulate that's where metric_relabel_configs applies. EC2 SD configurations allow retrieving scrape targets from AWS EC2 my/path/tg_*.json. - ip-192-168-64-29.multipass:9100 As an example, consider the following two metrics. 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. 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. Linode APIv4. They are set by the service discovery mechanism that provided # prometheus $ vim /usr/local/prometheus/prometheus.yml $ sudo systemctl restart prometheus Relabeler allows you to visually confirm the rules implemented by a relabel config. ), but not system components (kubelet, node-exporter, kube-scheduler, .,) system components do not need most of the labels (endpoint . in the configuration file. This can be Each target has a meta label __meta_url during the Additional config for this answer: RE2 regular expression. To collect all metrics from default targets, in the configmap under default-targets-metrics-keep-list, set minimalingestionprofile to false. Scrape kube-state-metrics in the k8s cluster (installed as a part of the addon) without any extra scrape config. Prometheus Cheatsheets My Cheatsheet Repository View on GitHub Prometheus Cheatsheets. By default, instance is set to __address__, which is $host:$port. The node-exporter config below is one of the default targets for the daemonset pods. Scrape coredns service in the k8s cluster without any extra scrape config. This is often resolved by using metric_relabel_configs instead (the reverse has also happened, but it's far less common). 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. Downloads. To play around with and analyze any regular expressions, you can use RegExr. Hetzner Cloud API and The __scheme__ and __metrics_path__ labels See below for the configuration options for Triton discovery: Eureka SD configurations allow retrieving scrape targets using the To learn more about Prometheus service discovery features, please see Configuration from the Prometheus docs. node_uname_info{nodename} -> instance -- I get a syntax error at startup. 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. This service discovery method only supports basic DNS A, AAAA, MX and SRV Scaleway SD configurations allow retrieving scrape targets from Scaleway instances and baremetal services. a port-free target per container is created for manually adding a port via relabeling. Grafana Labs uses cookies for the normal operation of this website. . These are SmartOS zones or lx/KVM/bhyve branded zones. integrations with this Theoretically Correct vs Practical Notation, Using indicator constraint with two variables, Linear regulator thermal information missing in datasheet. Grafana Labs uses cookies for the normal operation of this website. Prometheuslabel_replace | by kameneko | penguin-lab | Medium Write Sign up Sign In 500 Apologies, but something went wrong on our end. Relabel configs allow you to select which targets you want scraped, and what the target labels will be. The The target address defaults to the first existing address of the Kubernetes You can filter series using Prometheuss relabel_config configuration object. Additional labels prefixed with __meta_ may be available during the For users with thousands of containers it The __scrape_interval__ and __scrape_timeout__ labels are set to the target's Blog | Training | Book | Privacy, relabel_configs vs metric_relabel_configs. The tasks role discovers all Swarm tasks their API. You can use a relabel_config to filter through and relabel: Youll learn how to do this in the next section. Prometheus queries: How to give a default label when it is missing? To learn more about them, please see Prometheus Monitoring Mixins. Below are examples showing ways to use relabel_configs. To learn more, please see Regular expression on Wikipedia. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. If the endpoint is backed by a pod, all , __name__ () node_cpu_seconds_total mode idle (drop). To override the cluster label in the time series scraped, update the setting cluster_alias to any string under prometheus-collector-settings in the ama-metrics-settings-configmap configmap. engine. Any relabel_config must have the same general structure: These default values should be modified to suit your relabeling use case. is any valid It is - targets: ['localhost:8070'] scheme: http metric_relabel_configs: - source_labels: [__name__] regex: 'organizations_total|organizations_created' action . 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. If the relabel action results in a value being written to some label, target_label defines to which label the replacement should be written. This SD discovers "containers" and will create a target for each network IP and port the container is configured to expose. The pod role discovers all pods and exposes their containers as targets. File-based service discovery provides a more generic way to configure static targets as retrieved from the API server. service account and place the credential file in one of the expected locations. The Linux Foundation has registered trademarks and uses trademarks. As we did with Instance labelling in the last post, it'd be cool if we could show instance=lb1.example.com instead of an IP address and port. compute resources. to scrape them. Marathon REST API. I have suggested calling it target_relabel_configs to differentiate it from metric_relabel_configs. 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 https://stackoverflow.com/a/64623786/2043385. used by Finagle and I used the answer to this post as a model for my request: https://stackoverflow.com/a/50357418 . In the general case, one scrape configuration specifies a single will periodically check the REST endpoint and I'm working on file-based service discovery from a DB dump that will be able to write these targets out. The other is for the CloudWatch agent configuration. metric_relabel_configs relabel_configsreplace Prometheus K8S . Note that adding an additional scrape . 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. - Key: Environment, Value: dev. could be used to limit which samples are sent. Metric relabel configs are applied after scraping and before ingestion. You can also manipulate, transform, and rename series labels using relabel_config. ec2:DescribeAvailabilityZones permission if you want the availability zone ID A tls_config allows configuring TLS connections. Prom Labss Relabeler tool may be helpful when debugging relabel configs. Omitted fields take on their default value, so these steps will usually be shorter. To specify which configuration file to load, use the --config.file flag. For users with thousands of metrics without this label. single target is generated. How to use Slater Type Orbitals as a basis functions in matrix method correctly? For example, you may have a scrape job that fetches all Kubernetes Endpoints using a kubernetes_sd_configs parameter. 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). 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. instance it is running on should have at least read-only permissions to the Email update@grafana.com for help. But what about metrics with no labels? Heres an example. in the following places, preferring the first location found: If Prometheus is running within GCE, the service account associated with the This will also reload any configured rule files. 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. A static_config allows specifying a list of targets and a common label set Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The job and instance label values can be changed based on the source label, just like any other label. Prometheus Monitoring subreddit. support for filtering instances. Metric 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). Its value is set to the I'm also loathe to fork it and have to maintain in parallel with upstream, I have neither the time nor the karma. In this case Prometheus would drop a metric like container_network_tcp_usage_total(. Use Grafana to turn failure into resilience. GCE SD configurations allow retrieving scrape targets from GCP GCE instances. See this example Prometheus configuration file 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. This occurs after target selection using relabel_configs. Of course, we can do the opposite and only keep a specific set of labels and drop everything else. The relabel_config step will use this number to populate the target_label with the result of the MD5(extracted value) % modulus expression. to filter proxies and user-defined tags. Well demo all the highlights of the major release: new and updated visualizations and themes, data source improvements, and Enterprise features. The cluster label appended to every time series scraped will use the last part of the full AKS cluster's ARM resourceID. This role uses the public IPv4 address by default. Prometheus is configured through a single YAML file called prometheus.yml. 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). created using the port parameter defined in the SD configuration. - targets: ['localhost:8070'] scheme: http metric_relabel_configs: - source_labels: [__name__] regex: 'organizations_total|organizations_created' action . 1Prometheus. To bulk drop or keep labels, use the labelkeep and labeldrop actions. 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. Whats the grammar of "For those whose stories they are"? Since the (. If running outside of GCE make sure to create an appropriate label is set to the job_name value of the respective scrape configuration. Add a new label called example_label with value example_value to every metric of the job. tracing_config configures exporting traces from Prometheus to a tracing backend via the OTLP protocol. The labelkeep and labeldrop actions allow for filtering the label set itself. config package - github.com/prometheus/prometheus/config - Go Packages The highest tagged major version is v2 . This guide describes several techniques you can use to reduce your Prometheus metrics usage on Grafana Cloud. This relabeling occurs after target selection. The PromQL queries that power these dashboards and alerts reference a core set of important observability metrics. s. 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. By default, for all the default targets, only minimal metrics used in the default recording rules, alerts, and Grafana dashboards are ingested as described in minimal-ingestion-profile. The following relabeling would remove all {subsystem=""} labels but keep other labels intact. feature to replace the special __address__ label. changed with relabeling, as demonstrated in the Prometheus linode-sd To drop a specific label, select it using source_labels and use a replacement value of "". You can either create this configmap or edit an existing one. See below for the configuration options for OVHcloud discovery: PuppetDB SD configurations allow retrieving scrape targets from value is set to the specified default. The labelmap action is used to map one or more label pairs to different label names. 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.