The __param_ target and its labels before scraping. 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. Additionally, relabel_configs allow advanced modifications to any For example "test\'smetric\"s\"" and testbackslash\\*. This configuration does not impact any configuration set in metric_relabel_configs or relabel_configs. first NICs IP address by default, but that can be changed with relabeling. configuration file defines everything related to scraping jobs and their For example, you may have a scrape job that fetches all Kubernetes Endpoints using a kubernetes_sd_configs parameter. Published by Brian Brazil in Posts Tags: prometheus, relabelling, service discovery Share on Blog | Training | Book | Privacy Grafana Cloud is the easiest way to get started with metrics, logs, traces, and dashboards. Configuration file To specify which configuration file to load, use the --config.file flag. record queries, but not the advanced DNS-SD approach specified in We've looked at the full Life of a Label. Relabeling and filtering at this stage modifies or drops samples before Prometheus ingests them locally and ships them to remote storage. Mixins are a set of preconfigured dashboards and alerts. dynamically discovered using one of the supported service-discovery mechanisms. relabeling phase. Asking for help, clarification, or responding to other answers. DigitalOcean SD configurations allow retrieving scrape targets from DigitalOcean's File-based service discovery provides a more generic way to configure static targets See below for the configuration options for Triton discovery: Eureka SD configurations allow retrieving scrape targets using the Of course, we can do the opposite and only keep a specific set of labels and drop everything else. changed with relabeling, as demonstrated in the Prometheus vultr-sd Follow the instructions to create, validate, and apply the configmap for your cluster. 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. Metric relabeling is applied to samples as the last step before ingestion. 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. 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 The tasks role discovers all Swarm tasks service port. - the incident has nothing to do with me; can I use this this way? scrape targets from Container Monitor See below for the configuration options for EC2 discovery: The relabeling phase is the preferred and more powerful Both of these methods are implemented through Prometheuss metric filtering and relabeling feature, relabel_config. 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. The relabel_configs section is applied at the time of target discovery and applies to each target for the job. One of the following types can be configured to discover targets: The container role discovers one target per "virtual machine" owned by the account. Monitoring Docker container metrics using cAdvisor, Use file-based service discovery to discover scrape targets, Understanding and using the multi-target exporter pattern, Monitoring Linux host metrics with the Node Exporter, the Prometheus digitalocean-sd 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. Open positions, Check out the open source projects we support devops, docker, prometheus, Create a AWS Lambda Layer with Docker Relabeling 4.1 . This is often resolved by using metric_relabel_configs instead (the reverse has also happened, but it's far less common). Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Alert windows_exporter: enabled: true metric_relabel_configs: - source_labels: [__name__] regex: windows_system_system_up_time action: keep . write_relabel_configs is relabeling applied to samples before sending them to scrape them. It is discover scrape targets, and may optionally have the 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. 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. 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 . This occurs after target selection using relabel_configs. to filter proxies and user-defined tags. Next I tried metrics_relabel_configs but that doesn't seem to want to copy a label from a different metric, ie. May 29, 2017. To learn how to discover high-cardinality metrics, please see Analyzing Prometheus metric usage. Prometheus dns service discovery in docker swarm relabel instance, Prometheus - Aggregate and relabel by regex, How to concatenate labels in Prometheus relabel config, Prometheus: invalid hostname with https scheme, Prometheus multiple source label in relabel config, Prometheus metric relabel for specific value. RFC6763. where should i use this in prometheus? See this example Prometheus configuration file The reason is that relabeling can be applied in different parts of a metrics lifecycle from selecting which of the available targets wed like to scrape, to sieving what wed like to store in Prometheus time series database and what to send over to some remote storage. Prom Labss Relabeler tool may be helpful when debugging relabel configs. Nomad SD configurations allow retrieving scrape targets from Nomad's Why is there a voltage on my HDMI and coaxial cables? Let's focus on one of the most common confusions around relabelling. Prometheus Monitoring subreddit. The labels can be used in the relabel_configs section to filter targets or replace labels for the targets. This feature allows you to filter through series labels using regular expressions and keep or drop those that match. The hashmod action provides a mechanism for horizontally scaling Prometheus. Well demo all the highlights of the major release: new and updated visualizations and themes, data source improvements, and Enterprise features. Relabeling relabeling Prometheus Relabel OAuth 2.0 authentication using the client credentials grant type. For users with thousands of tasks it Default targets are scraped every 30 seconds. which automates the Prometheus setup on top of Kubernetes. This See this example Prometheus configuration file This can be refresh failures. Reload Prometheus and check out the targets page: Great! label is set to the value of the first passed URL parameter called . In addition, the instance label for the node will be set to the node name Enter relabel_configs, a powerful way to change metric labels dynamically. To un-anchor the regex, use .*.*. relabeling: Kubernetes SD configurations allow retrieving scrape targets from Or if youre using Prometheus Kubernetes service discovery you might want to drop all targets from your testing or staging namespaces. locations, amount of data to keep on disk and in memory, etc. by the API. As an example, consider the following two metrics. Use __address__ as the source label only because that label will always exist and will add the label for every target of the job. This will also reload any configured rule files. This SD discovers "monitoring assignments" based on Kuma Dataplane Proxies, You can use a relabel_config to filter through and relabel: Youll learn how to do this in the next section. [prometheus URL]:9090/targets target endpoint Before relabeling __metrics_path__ label relabel relabel static config support for filtering instances. Dropping metrics at scrape time with Prometheus It's easy to get carried away by the power of labels with Prometheus. Prometheus needs to know what to scrape, and that's where service discovery and relabel_configs come in. The PromQL queries that power these dashboards and alerts reference a core set of important observability metrics. Hetzner SD configurations allow retrieving scrape targets from The global configuration specifies parameters that are valid in all other configuration The fastest way to get started is with Grafana Cloud, which includes free forever access to 10k metrics, 50GB logs, 50GB traces, & more. Why does Mister Mxyzptlk need to have a weakness in the comics? There is a small demo of how to use Hope you learned a thing or two about relabeling rules and that youre more comfortable with using them. For OVHcloud's public cloud instances you can use the openstacksdconfig. Now what can we do with those building blocks? You can extract a samples metric name using the __name__ meta-label. Add a new label called example_label with value example_value to every metric of the job. Scrape cAdvisor in every node in the k8s cluster without any extra scrape config. I'm not sure if that's helpful. One use for this is ensuring a HA pair of Prometheus servers with different One of the following roles can be configured to discover targets: The services role discovers all Swarm services created using the port parameter defined in the SD configuration. 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. I used the answer to this post as a model for my request: https://stackoverflow.com/a/50357418 . Using metric_relabel_configs, you can drastically reduce your Prometheus metrics usage by throwing out unneeded samples. A Prometheus configuration may contain an array of relabeling steps; they are applied to the label set in the order they're defined in. may contain a single * that matches any character sequence, e.g. So without further ado, lets get into it! For users with thousands of See below for the configuration options for OpenStack discovery: OVHcloud SD configurations allow retrieving scrape targets from OVHcloud's dedicated servers and VPS using Once the targets have been defined, the metric_relabel_configs steps are applied after the scrape and allow us to select which series we would like to ingest into Prometheus storage. changed with relabeling, as demonstrated in the Prometheus linode-sd Open positions, Check out the open source projects we support Finally, the modulus field expects a positive integer. I've never encountered a case where that would matter, but hey sure if there's a better way, why not. Labels starting with __ will be removed from the label set after target For each endpoint You can filter series using Prometheuss relabel_config configuration object. Parameters that arent explicitly set will be filled in using default values. "After the incident", I started to be more careful not to trip over things. If running outside of GCE make sure to create an appropriate 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 view all available command-line flags, run ./prometheus -h. Prometheus can reload its configuration at runtime. The relabeling phase is the preferred and more powerful Targets discovered using kubernetes_sd_configs will each have different __meta_* labels depending on what role is specified.