On the federation endpoint Prometheus can add labels When sending alerts we can alter alerts labels I used the answer to this post as a model for my request: https://stackoverflow.com/a/50357418 . Advanced Setup: Configure custom Prometheus scrape jobs for the daemonset the public IP address with relabeling. For Relabel configs allow you to select which targets you want scraped, and what the target labels will be. my/path/tg_*.json. and exposes their ports as targets. So without further ado, lets get into it! Aurora. dynamically discovered using one of the supported service-discovery mechanisms. Hope you learned a thing or two about relabeling rules and that youre more comfortable with using them. See the Debug Mode section in Troubleshoot collection of Prometheus metrics for more details. interface. This reduced set of targets corresponds to Kubelet https-metrics scrape endpoints. So the solution I used is to combine an existing value containing what we want (the hostnmame) with a metric from the node exporter. 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. Use the metric_relabel_configs section to filter metrics after scraping. 3. relabel_configs. address one target is discovered per port. configuration file, this example Prometheus configuration file, the Prometheus hetzner-sd for a practical example on how to set up your Marathon app and your Prometheus Overview. Why are physically impossible and logically impossible concepts considered separate in terms of probability? Prometheus is configured through a single YAML file called prometheus.yml. Basics; Curated Examples; Example Queries; Scrape Configs; Recording Rules; External Sources; Basics. Most users will only need to define one instance. To collect all metrics from default targets, in the configmap under default-targets-metrics-keep-list, set minimalingestionprofile to false. For each endpoint Each pod of the daemonset will take the config, scrape the metrics, and send them for that node. address defaults to the host_ip attribute of the hypervisor. Please help improve it by filing issues or pull requests. Prometheus fetches an access token from the specified endpoint with way to filter targets based on arbitrary labels. WindowsyamlLinux. Use metric_relabel_configs in a given scrape job to select which series and labels to keep, and to perform any label replacement operations. their API. Now what can we do with those building blocks? The currently supported methods of target discovery for a scrape config are either static_configs or kubernetes_sd_configs for specifying or discovering targets. Lightsail SD configurations allow retrieving scrape targets from AWS Lightsail We drop all ports that arent named web. for a detailed example of configuring Prometheus for Kubernetes. For all targets discovered directly from the endpointslice list (those not additionally inferred stored in Zookeeper. Metric The target must reply with an HTTP 200 response. instances it can be more efficient to use the EC2 API directly which has You can perform the following common action operations: For a full list of available actions, please see relabel_config from the Prometheus documentation. 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. used by Finagle and We've looked at the full Life of a Label. config package - github.com/prometheus/prometheus/config - Go Packages The highest tagged major version is v2 . 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. Thanks for contributing an answer to Stack Overflow! * action: drop metric_relabel_configs Asking for help, clarification, or responding to other answers. Some of these special labels available to us are. The second relabeling rule adds {__keep="yes"} label to metrics with empty `mountpoint` label, e.g. Sign up for free now! Initially, aside from the configured per-target labels, a target's job Tracing is currently an experimental feature and could change in the future. Our answer exist inside the node_uname_info metric which contains the nodename value. refresh failures. Refer to Apply config file section to create a configmap from the prometheus config. the public IP address with relabeling. The address will be set to the host specified in the ingress spec. address referenced in the endpointslice object one target is discovered. With a (partial) config that looks like this, I was able to achieve the desired result. Using a standard prometheus config to scrape two targets: Robot API. To learn more, please see Regular expression on Wikipedia. This is often useful when fetching sets of targets using a service discovery mechanism like kubernetes_sd_configs, or Kubernetes service discovery. can be more efficient to use the Swarm API directly which has basic support for changed with relabeling, as demonstrated in the Prometheus hetzner-sd Since weve used default regex, replacement, action, and separator values here, they can be omitted for brevity. This service discovery uses the public IPv4 address by default, by that can be 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. configuration file. There is a list of 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. Of course, we can do the opposite and only keep a specific set of labels and drop everything else. Prometheus #Prometheus SoundCloud (TSDB).2012, Prometheus,.Prometheus 2016 CNCF ( Cloud Native Computing Fou. EC2 SD configurations allow retrieving scrape targets from AWS EC2 for them. to the Kubelet's HTTP port. Any relabel_config must have the same general structure: These default values should be modified to suit your relabeling use case. Thanks for reading, if you like my content, check out my website, read my newsletter or follow me at @ruanbekker on Twitter. Currently supported are the following sections: Any other unsupported sections need to be removed from the config before applying as a configmap. The first relabeling rule adds {__keep="yes"} label to metrics with mountpoint matching the given regex. 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. A tls_config allows configuring TLS connections. the target and vary between mechanisms. Note that adding an additional scrape . This piece of remote_write configuration sets the remote endpoint to which Prometheus will push samples. Scrape node metrics without any extra scrape config. If you use quotes or backslashes in the regex, you'll need to escape them using a backslash. 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. The tasks role discovers all Swarm tasks label is set to the value of the first passed URL parameter called . instances, as well as 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. May 29, 2017. instances. will periodically check the REST endpoint and Docker Swarm SD configurations allow retrieving scrape targets from Docker Swarm valid JSON. This SD discovers "monitoring assignments" based on Kuma Dataplane Proxies, Prometheus Cheatsheets My Cheatsheet Repository View on GitHub Prometheus Cheatsheets. 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 When we configured Prometheus to run as a service, we specified the path of /etc/prometheus/prometheus.yml. Each target has a meta label __meta_url during the Labels are sets of key-value pairs that allow us to characterize and organize whats actually being measured in a Prometheus metric. The file is written in YAML format, Use __address__ as the source label only because that label will always exist and will add the label for every target of the job. For each endpoint See below for the configuration options for Triton discovery: Eureka SD configurations allow retrieving scrape targets using the server sends alerts to. Well demo all the highlights of the major release: new and updated visualizations and themes, data source improvements, and Enterprise features. This will cut your active series count in half. DNS servers to be contacted are read from /etc/resolv.conf. service is created using the port parameter defined in the SD configuration. Choosing which metrics and samples to scrape, store, and ship to Grafana Cloud can seem quite daunting at first. The new label will also show up in the cluster parameter dropdown in the Grafana dashboards instead of the default one. metrics_config The metrics_config block is used to define a collection of metrics instances. DigitalOcean SD configurations allow retrieving scrape targets from DigitalOcean's This SD discovers resources and will create a target for each resource returned See below for the configuration options for PuppetDB discovery: See this example Prometheus configuration file The following rule could be used to distribute the load between 8 Prometheus instances, each responsible for scraping the subset of targets that end up producing a certain value in the [0, 7] range, and ignoring all others. external labels send identical alerts. metric_relabel_configs /metricsmetric_relabel_configs 3.2.2 alertmanagers alertmanagers Prometheus alertmanagers Prometheuspushing alertmanager alertmanager target This will also reload any configured rule files. Denylisting becomes possible once youve identified a list of high-cardinality metrics and labels that youd like to drop. The terminal should return the message "Server is ready to receive web requests." 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. 5.6K subscribers in the PrometheusMonitoring community. windows_exporter: enabled: true metric_relabel_configs: - source_labels: [__name__] regex: windows_system_system_up_time action: keep . First off, the relabel_configs key can be found as part of a scrape job definition. To learn more about the general format for a relabel_config block, please see relabel_config from the Prometheus docs. Nomad SD configurations allow retrieving scrape targets from Nomad's to the remote endpoint. To enable denylisting in Prometheus, use the drop and labeldrop actions with any relabeling configuration. Or if youre using Prometheus Kubernetes service discovery you might want to drop all targets from your testing or staging namespaces. So if you want to say scrape this type of machine but not that one, use relabel_configs. In advanced configurations, this may change. 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. Finally, use write_relabel_configs in a remote_write configuration to select which series and labels to ship to remote storage. engine. type Config struct {GlobalConfig GlobalConfig `yaml:"global"` AlertingConfig AlertingConfig `yaml:"alerting,omitempty"` RuleFiles []string `yaml:"rule_files,omitempty"` ScrapeConfigs []*ScrapeConfig `yaml:"scrape_configs,omitempty"` . You can place all the logic in the targets section using some separator - I used @ and then process it with regex. scrape targets from Container Monitor See this example Prometheus configuration file will periodically check the REST endpoint for currently running tasks and metrics without this label. Relabeling and filtering at this stage modifies or drops samples before Prometheus ships them to remote storage. The last relabeling rule drops all the metrics without {__keep="yes"} label. 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 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. action: keep. Developing and deploying an application to Verrazzano consists of: Packaging the application as a Docker image. Note that exemplar storage is still considered experimental and must be enabled via --enable-feature=exemplar-storage. changes resulting in well-formed target groups are applied. You can extract a samples metric name using the __name__ meta-label. To review, open the file in an editor that reveals hidden Unicode characters. 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. A static_config allows specifying a list of targets and a common label set First, it should be metric_relabel_configs rather than relabel_configs. Going back to our extracted values, and a block like this. If it finds the instance_ip label, it renames this label to host_ip. This can be used to filter metrics with high cardinality or route metrics to specific remote_write targets. prometheus prometheus server Pull Push . Which seems odd. I'm also loathe to fork it and have to maintain in parallel with upstream, I have neither the time nor the karma. Prometheus needs to know what to scrape, and that's where service discovery and relabel_configs come in. Otherwise the custom configuration will fail validation and won't be applied. 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). Vultr SD configurations allow retrieving scrape targets from Vultr. For reference, heres our guide to Reducing Prometheus metrics usage with relabeling. The instance role discovers one target per network interface of Nova and exposes their ports as targets. in the configuration file. The labelmap action is used to map one or more label pairs to different label names. The relabeling phase is the preferred and more powerful Refresh the page, check Medium 's site status,. In the previous example, we may not be interested in keeping track of specific subsystems labels anymore. This SD discovers "containers" and will create a target for each network IP and port the container is configured to expose. I see that the node exporter provides the metric node_uname_info that contains the hostname, but how do I extract it from there? For now, Prometheus Operator adds following labels automatically: endpoint, instance, namespace, pod, and service. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. However, its usually best to explicitly define these for readability. Prometheus keeps all other metrics. Grafana Labs uses cookies for the normal operation of this website. After changing the file, the prometheus service will need to be restarted to pickup the changes. Downloads. Please find below an example from other exporter (blackbox), but same logic applies for node exporter as well. Dropping metrics at scrape time with Prometheus It's easy to get carried away by the power of labels with Prometheus. Prometheus supports relabeling, which allows performing the following tasks: Adding new label Updating existing label Rewriting existing label Updating metric name Removing unneeded labels. Prometheus Authors 2014-2023 | Documentation Distributed under CC-BY-4.0. additional container ports of the pod, not bound to an endpoint port, are discovered as targets as well. Email update@grafana.com for help. You can reduce the number of active series sent to Grafana Cloud in two ways: Allowlisting: This involves keeping a set of important metrics and labels that you explicitly define, and dropping everything else. See below for the configuration options for OVHcloud discovery: PuppetDB SD configurations allow retrieving scrape targets from filepath from which the target was extracted. A consists of seven fields. Grafana Labs uses cookies for the normal operation of this website. configuration file. 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 Finally, the modulus field expects a positive integer. See this example Prometheus configuration file has the same configuration format and actions as target relabeling. - Key: PrometheusScrape, Value: Enabled configuration. Relabeling and filtering at this stage modifies or drops samples before Prometheus ingests them locally and ships them to remote storage. Which is frowned on by upstream as an "antipattern" because apparently there is an expectation that instance be the only label whose value is unique across all metrics in the job. configuration file, the Prometheus uyuni-sd configuration file, the Prometheus vultr-sd compute resources. 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. So if there are some expensive metrics you want to drop, or labels coming from the scrape itself (e.g. If were using Prometheus Kubernetes SD, our targets would temporarily expose some labels such as: Labels starting with double underscores will be removed by Prometheus after relabeling steps are applied, so we can use labelmap to preserve them by mapping them to a different name. Prometheus is an open-source monitoring and alerting toolkit that collects and stores its metrics as time series data. Thats all for today! They also serve as defaults for other configuration sections. It does so by replacing the labels for scraped data by regexes with relabel_configs. This service discovery uses the public IPv4 address by default, but that can be I'm not sure if that's helpful. Using the write_relabel_config entry shown below, you can target the metric name using the __name__ label in combination with the instance name. 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. metric_relabel_configsmetric . Finally, the write_relabel_configs block applies relabeling rules to the data just before its sent to a remote endpoint. And what can they actually be used for? The endpoint is queried periodically at the specified refresh interval. 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. Let's focus on one of the most common confusions around relabelling. One source of confusion around relabeling rules is that they can be found in multiple parts of a Prometheus config file. yamlyaml. Targets may be statically configured via the static_configs parameter or to scrape them. r/kubernetes I've been collecting a list of k8s/container tools and sorting them by the number of stars in Github, so far the most complete k8s/container list I know of with almost 250 entries - hoping this is useful for someone else besides me - looking for feedback, ideas for improvement and contributors 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. Prometheusrelabel config sell prometheus Prometheus relabel config 1. scrapelabel node_exporternode_cpucpurelabel config 2. action=replace The target An alertmanager_config section specifies Alertmanager instances the Prometheus Finally, this configures authentication credentials and the remote_write queue. The result of the concatenation is the string node-42 and the MD5 of the string modulus 8 is 5. To learn how to do this, please see Sending data from multiple high-availability Prometheus instances. This feature allows you to filter through series labels using regular expressions and keep or drop those that match. The result can then be matched against using a regex, and an action operation can be performed if a match occurs. domain names which are periodically queried to discover a list of targets. This relabeling occurs after target selection. These relabeling steps are applied before the scrape occurs and only have access to labels added by Prometheus Service Discovery. Use Grafana to turn failure into resilience. Prometheus K8SYaml K8S "After the incident", I started to be more careful not to trip over things. Weve come a long way, but were finally getting somewhere. node_uname_info{nodename} -> instance -- I get a syntax error at startup. prometheustarget 12key metrics_relabel_configsrelabel_configsmetrics_relabel_configsrelabel_configstarget metric_relabel_configs 0 APP "" sleepyzhang 0 7638 0 0 Enter relabel_configs, a powerful way to change metric labels dynamically. For users with thousands of containers it I am attempting to retrieve metrics using an API and the curl response appears to be in the correct format. Metric relabel configs are applied after scraping and before ingestion. After relabeling, the instance label is set to the value of __address__ by default if configuration file. If a service has no published ports, a target per There are seven available actions to choose from, so lets take a closer look. discovery endpoints. Reload Prometheus and check out the targets page: Great! integrations 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. by the API. metric_relabel_configs by contrast are applied after the scrape has happened, but before the data is ingested by the storage system. The endpoints role discovers targets from listed endpoints of a service. Files may be provided in YAML or JSON format. This guide describes several techniques you can use to reduce your Prometheus metrics usage on Grafana Cloud. The cn role discovers one target for per compute node (also known as "server" or "global zone") making up the Triton infrastructure. See the Prometheus marathon-sd configuration file record queries, but not the advanced DNS-SD approach specified in 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. Alert relabeling is applied to alerts before they are sent to the Alertmanager. 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 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 target address defaults to the first existing address of the Kubernetes