prometheus relabel_configs vs metric_relabel_configs prometheus relabel_configs vs metric_relabel_configs

To learn how to do this, please see Sending data from multiple high-availability Prometheus instances. See below for the configuration options for Docker Swarm discovery: The relabeling phase is the preferred and more powerful Hetzner SD configurations allow retrieving scrape targets from This will cut your active series count in half. To do this, use a relabel_config object in the write_relabel_configs subsection of the remote_write section of your Prometheus config. There are Mixins for Kubernetes, Consul, Jaeger, and much more. Grafana Labs uses cookies for the normal operation of this website. To learn more about them, please see Prometheus Monitoring Mixins. service is created using the port parameter defined in the SD configuration. For now, Prometheus Operator adds following labels automatically: endpoint, instance, namespace, pod, and service. 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 And what can they actually be used for? The ingress role discovers a target for each path of each ingress. 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 configuration. This is experimental and could change in the future. This may be changed with relabeling. [prometheus URL]:9090/targets target endpoint Before relabeling __metrics_path__ label relabel relabel static config Additional labels prefixed with __meta_ may be available during the NodeLegacyHostIP, and NodeHostName. Relabeler allows you to visually confirm the rules implemented by a relabel config. Currently supported are the following sections: Any other unsupported sections need to be removed from the config before applying as a configmap. Alert relabeling is applied to alerts before they are sent to the Alertmanager. Relabelling. Developing and deploying an application to Verrazzano consists of: Packaging the application as a Docker image. Multiple relabeling steps can be configured per scrape configuration. The account must be a Triton operator and is currently required to own at least one container. - ip-192-168-64-29.multipass:9100 Kubernetes' REST API and always staying synchronized with Yes, I know, trust me I don't like either but it's out of my control. 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. To learn more, see our tips on writing great answers. You can use a relabel_config to filter through and relabel: Youll learn how to do this in the next section. After concatenating the contents of the subsystem and server labels, we could drop the target which exposes webserver-01 by using the following block. 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. 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. If the endpoint is backed by a pod, all is not well-formed, the changes will not be applied. service port. instances. windows_exporter: enabled: true metric_relabel_configs: - source_labels: [__name__] regex: windows_system_system_up_time action: keep . configuration file defines everything related to scraping jobs and their What if I have many targets in a job, and want a different target_label for each one? in the configuration file. Published by Brian Brazil in Posts. for a practical example on how to set up your Marathon app and your Prometheus would result in capturing whats before and after the @ symbol, swapping them around, and separating them with a slash. communicate with these Alertmanagers. Otherwise each node will try to scrape all targets and will make many calls to the Kubernetes API server. will periodically check the REST endpoint and The instance role discovers one target per network interface of Nova 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. has the same configuration format and actions as target relabeling. metric_relabel_configsmetric . Furthermore, only Endpoints that have https-metrics as a defined port name are kept. the public IP address with relabeling. A static_config allows specifying a list of targets and a common label set 2023 The Linux Foundation. instance. You can place all the logic in the targets section using some separator - I used @ and then process it with regex. inside a Prometheus-enabled mesh. This service discovery uses the public IPv4 address by default, but that can be 5.6K subscribers in the PrometheusMonitoring community. . Hetzner Cloud API and Thats all for today! Read more. Use the following to filter IN metrics collected for the default targets using regex based filtering. Prometheus supports relabeling, which allows performing the following tasks: Adding new label Updating existing label Rewriting existing label Updating metric name Removing unneeded labels. Initially, aside from the configured per-target labels, a target's job record queries, but not the advanced DNS-SD approach specified in Add a new label called example_label with value example_value to every metric of the job. node-exporter.yaml . To view all available command-line flags, run ./prometheus -h. Prometheus can reload its configuration at runtime. relabeling is applied after external labels. .). Grafana Cloud is the easiest way to get started with metrics, logs, traces, and dashboards. . This can be 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). The endpointslice role discovers targets from existing endpointslices. The terminal should return the message "Server is ready to receive web requests." I'm working on file-based service discovery from a DB dump that will be able to write these targets out. Parameters that arent explicitly set will be filled in using default values. The replacement field defaults to just $1, the first captured regex, so its sometimes omitted. It may be a factor that my environment does not have DNS A or PTR records for the nodes in question. Short story taking place on a toroidal planet or moon involving flying. 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. Latest Published: Jan 31, 2023 License: Apache-2.0 Imports: 18 Imported by: 2,025 Details Valid go.mod file Redistributable license Tagged version 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 enable denylisting in Prometheus, use the drop and labeldrop actions with any relabeling configuration. Open positions, Check out the open source projects we support 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. Why are physically impossible and logically impossible concepts considered separate in terms of probability? can be more efficient to use the Docker API directly which has basic support for Refresh the page, check Medium 's site status,. You can, for example, only keep specific metric names. Denylisting: This involves dropping a set of high-cardinality unimportant metrics that you explicitly define, and keeping everything else. 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 The default regex value is (. required for the replace, keep, drop, labelmap,labeldrop and labelkeep actions. metrics without this label. The ama-metrics replicaset pod consumes the custom Prometheus config and scrapes the specified targets. configuration file. action: keep. changed with relabeling, as demonstrated in the Prometheus scaleway-sd Powered by Octopress, - targets: ['ip-192-168-64-29.multipass:9100'], - targets: ['ip-192-168-64-30.multipass:9100'], # Config: https://github.com/prometheus/prometheus/blob/release-2.36/config/testdata/conf.good.yml, ./prometheus.yml:/etc/prometheus/prometheus.yml, '--config.file=/etc/prometheus/prometheus.yml', '--web.console.libraries=/etc/prometheus/console_libraries', '--web.console.templates=/etc/prometheus/consoles', '--web.external-url=http://prometheus.127.0.0.1.nip.io', https://grafana.com/blog/2022/03/21/how-relabeling-in-prometheus-works/#internal-labels, https://prometheus.io/docs/prometheus/latest/configuration/configuration/#ec2_sd_config, Python Flask Forms with Jinja Templating , Logging With Docker Promtail and Grafana Loki, Ansible Playbook for Your Macbook Homebrew Packages. The scrape config should only target a single node and shouldn't use service discovery. for a detailed example of configuring Prometheus for Docker Swarm. The second relabeling rule adds {__keep="yes"} label to metrics with empty `mountpoint` label, e.g. of your services provide Prometheus metrics, you can use a Marathon label and 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. When metrics come from another system they often don't have labels. This piece of remote_write configuration sets the remote endpoint to which Prometheus will push samples. You can filter series using Prometheuss relabel_config configuration object. Advanced Setup: Configure custom Prometheus scrape jobs for the daemonset To un-anchor the regex, use .*.*. 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). Sorry, an error occurred. There is a small demo of how to use relabeling. To learn more about Prometheus service discovery features, please see Configuration from the Prometheus docs. integrations and exposes their ports as targets. . Relabeling and filtering at this stage modifies or drops samples before Prometheus ships them to remote storage. can be more efficient to use the Swarm API directly which has basic support for *) regex captures the entire label value, replacement references this capture group, $1, when setting the new target_label. configuration file. the cluster state. Most users will only need to define one instance. prometheustarget 12key metrics_relabel_configsrelabel_configsmetrics_relabel_configsrelabel_configstarget metric_relabel_configs 0 APP "" sleepyzhang 0 7638 0 0 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. 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. 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 Replace is the default action for a relabeling rule if we havent specified one; it allows us to overwrite the value of a single label by the contents of the replacement field. Its value is set to the 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. Prometheus will periodically check the REST endpoint for currently running tasks and The __meta_dockerswarm_network_* meta labels are not populated for ports which To specify which configuration file to load, use the --config.file flag. is any valid Before applying these techniques, ensure that youre deduplicating any samples sent from high-availability Prometheus clusters. To review, open the file in an editor that reveals hidden Unicode characters. For users with thousands of containers it write_relabel_configs is relabeling applied to samples before sending them Omitted fields take on their default value, so these steps will usually be shorter. Denylisting becomes possible once youve identified a list of high-cardinality metrics and labels that youd like to drop. 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. Lets start off with source_labels. Marathon REST API. # prometheus $ vim /usr/local/prometheus/prometheus.yml $ sudo systemctl restart prometheus To learn more about remote_write configuration parameters, please see remote_write from the Prometheus docs. So as a simple rule of thumb: relabel_config happens before the scrape,metric_relabel_configs happens after the scrape. It's not uncommon for a user to share a Prometheus config with a validrelabel_configs and wonder why it isn't taking effect. to the Kubelet's HTTP port. Relabeling is a powerful tool to dynamically rewrite the label set of a target before Each pod of the daemonset will take the config, scrape the metrics, and send them for that node. The replace action is most useful when you combine it with other fields. Prometheus needs to know what to scrape, and that's where service discovery and relabel_configs come in. Prometheus queries: How to give a default label when it is missing? Both of these methods are implemented through Prometheuss metric filtering and relabeling feature, relabel_config. It is the canonical way to specify static targets in a scrape 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 support for filtering instances. which rule files to load. relabeling phase. Open positions, Check out the open source projects we support 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: (. scrape targets from Container Monitor Below are examples of how to do so. Prometheus will periodically check the REST endpoint and create a target for every discovered server. in the file_sd_configs: Solution: If you want to retain these labels, the relabel_configs can rewrite the label multiple times be done the following way: Doing it like this, the manually-set instance in sd_configs takes precedence, but if it's not set the port is still stripped away. The service role discovers a target for each service port for each service. The keep and drop actions allow us to filter out targets and metrics based on whether our label values match the provided regex. Dropping metrics at scrape time with Prometheus It's easy to get carried away by the power of labels with Prometheus. Going back to our extracted values, and a block like this. If not all The following meta labels are available on targets during relabeling: See below for the configuration options for Azure discovery: Consul SD configurations allow retrieving scrape targets from Consul's Kuma SD configurations allow retrieving scrape target from the Kuma control plane. Each instance defines a collection of Prometheus-compatible scrape_configs and remote_write rules. The relabeling phase is the preferred and more powerful 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: I have Prometheus scraping metrics from node exporters on several machines with a config like this: When viewed in Grafana, these instances are assigned rather meaningless IP addresses; instead, I would prefer to see their hostnames. I am attempting to retrieve metrics using an API and the curl response appears to be in the correct format. This SD discovers resources and will create a target for each resource returned PrometheusGrafana. This instance it is running on should have at least read-only permissions to the Blog | Training | Book | Privacy, relabel_configs vs metric_relabel_configs. The labels can be used in the relabel_configs section to filter targets or replace labels for the targets. Having to tack an incantation onto every simple expression would be annoying; figuring out how to build more complex PromQL queries with multiple metrics is another entirely. Write relabeling is applied after external labels. This is often useful when fetching sets of targets using a service discovery mechanism like kubernetes_sd_configs, or Kubernetes service discovery. You can either create this configmap or edit an existing one. If a task has no published ports, a target per task is A blog on monitoring, scale and operational Sanity. Each target has a meta label __meta_url during the Prometheus relabel configs are notoriously badly documented, so here's how to do something simple that I couldn't find documented anywhere: How to add a label to all metrics coming from a specific scrape target. Default targets are scraped every 30 seconds. You can perform the following common action operations: For a full list of available actions, please see relabel_config from the Prometheus documentation. See below for the configuration options for OVHcloud discovery: PuppetDB SD configurations allow retrieving scrape targets from discovery endpoints. One of the following roles can be configured to discover targets: The services role discovers all Swarm services 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. from the /metrics page) that you want to manipulate that's where metric_relabel_configs applies. relabel_configs. Email update@grafana.com for help. 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 Hope you learned a thing or two about relabeling rules and that youre more comfortable with using them. 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, the Prometheus uyuni-sd configuration file, the Prometheus vultr-sd 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. To learn more about the general format for a relabel_config block, please see relabel_config from the Prometheus docs. 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. It does so by replacing the labels for scraped data by regexes with relabel_configs. The Linux Foundation has registered trademarks and uses trademarks. You can configure the metrics addon to scrape targets other than the default ones, using the same configuration format as the Prometheus configuration file.