prometheus relabel_configs vs metric_relabel_configs prometheus relabel_configs vs metric_relabel_configs

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. The __scheme__ and __metrics_path__ labels 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. Default targets are scraped every 30 seconds. Counter: A counter metric always increases; Gauge: A gauge metric can increase or decrease; Histogram: A histogram metric can increase or descrease; Source . Prometheus Monitoring subreddit. the public IP address with relabeling. could be used to limit which samples are sent. File-based service discovery provides a more generic way to configure static targets 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 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. Brackets indicate that a parameter is optional. The __* labels are dropped after discovering the targets. There are seven available actions to choose from, so lets take a closer look. Going back to our extracted values, and a block like this. This guide describes several techniques you can use to reduce your Prometheus metrics usage on Grafana Cloud. 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. Using metric_relabel_configs, you can drastically reduce your Prometheus metrics usage by throwing out unneeded samples. An alertmanager_config section specifies Alertmanager instances the Prometheus Note that the IP number and port used to scrape the targets is assembled as Using relabeling at the target selection stage, you can selectively choose which targets and endpoints you want to scrape (or drop) to tune your metric usage. The labelmap action is used to map one or more label pairs to different label names. If you use quotes or backslashes in the regex, you'll need to escape them using a backslash. Scrape kubelet in every node in the k8s cluster without any extra scrape config. 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]. Additionally, relabel_configs allow selecting Alertmanagers from discovered Prometheus metric_relabel_configs . This solution stores data at scrape-time with the desired labels, no need for funny PromQL queries or hardcoded hacks. 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. relabeling: Kubernetes SD configurations allow retrieving scrape targets from configuration file. The regex supports parenthesized capture groups which can be referred to later on. Metric relabel configs are applied after scraping and before ingestion. 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. See below for the configuration options for Docker discovery: The relabeling phase is the preferred and more powerful The pod role discovers all pods and exposes their containers as targets. via the MADS v1 (Monitoring Assignment Discovery Service) xDS API, and will create a target for each proxy node object in the address type order of NodeInternalIP, NodeExternalIP, Relabeling relabeling Prometheus Relabel 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. Overview. Why are physically impossible and logically impossible concepts considered separate in terms of probability? 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). - ip-192-168-64-29.multipass:9100 metric_relabel_configs by contrast are applied after the scrape has happened, but before the data is ingested by the storage system. integrations with this For users with thousands of tasks it interval and timeout. I used the answer to this post as a model for my request: https://stackoverflow.com/a/50357418 . Open positions, Check out the open source projects we support With a (partial) config that looks like this, I was able to achieve the desired result. Prometheus needs to know what to scrape, and that's where service discovery and relabel_configs come in. 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. If a job is using kubernetes_sd_configs to discover targets, each role has associated __meta_* labels for metrics. Its value is set to the Omitted fields take on their default value, so these steps will usually be shorter. It expects an array of one or more label names, which are used to select the respective label values. First off, the relabel_configs key can be found as part of a scrape job definition. To un-anchor the regex, use .*.*. After changing the file, the prometheus service will need to be restarted to pickup the changes. I've been trying in vai for a month to find a coherent explanation of group_left, and expressions aren't labels. In the general case, one scrape configuration specifies a single There are Mixins for Kubernetes, Consul, Jaeger, and much more. create a target group for every app that has at least one healthy task. a port-free target per container is created for manually adding a port via relabeling. 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. To learn more about them, please see Prometheus Monitoring Mixins. The HAProxy metrics have been discovered by Prometheus. The keep and drop actions allow us to filter out targets and metrics based on whether our label values match the provided regex. Use Grafana to turn failure into resilience. Thanks for contributing an answer to Stack Overflow! configuration file. This is most commonly used for sharding multiple targets across a fleet of Prometheus instances. inside a Prometheus-enabled mesh. The service role discovers a target for each service port for each service. Prometheus applies this relabeling and dropping step after performing target selection using relabel_configs and metric selection and relabeling using metric_relabel_configs. , __name__ () node_cpu_seconds_total mode idle (drop). Prometheus Authors 2014-2023 | Documentation Distributed under CC-BY-4.0. Theoretically Correct vs Practical Notation, Using indicator constraint with two variables, Linear regulator thermal information missing in datasheet. Where must be unique across all scrape configurations. Publishing the application's Docker image to a containe EC2 SD configurations allow retrieving scrape targets from AWS EC2 These are SmartOS zones or lx/KVM/bhyve branded zones. The second relabeling rule adds {__keep="yes"} label to metrics with empty `mountpoint` label, e.g. See below for the configuration options for Docker Swarm discovery: The relabeling phase is the preferred and more powerful DNS servers to be contacted are read from /etc/resolv.conf. Prometheus is an open-source monitoring and alerting toolkit that collects and stores its metrics as time series data. Denylisting: This involves dropping a set of high-cardinality unimportant metrics that you explicitly define, and keeping everything else. It reads a set of files containing a list of zero or more to scrape them. Prometheus fetches an access token from the specified endpoint with The instance role discovers one target per network interface of Nova available as a label (see below). the given client access and secret keys. Prometheus K8SYaml K8S refresh failures. Scaleway SD configurations allow retrieving scrape targets from Scaleway instances and baremetal services. The labels can be used in the relabel_configs section to filter targets or replace labels for the targets. Both of these methods are implemented through Prometheuss metric filtering and relabeling feature, relabel_config. 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. domain names which are periodically queried to discover a list of targets. However, its usually best to explicitly define these for readability. A static config has a list of static targets and any extra labels to add to them. 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 Follow the instructions to create, validate, and apply the configmap for your cluster. Open positions, Check out the open source projects we support Prometheus is configured through a single YAML file called prometheus.yml. This service discovery uses the public IPv4 address by default, by that can be Multiple relabeling steps can be configured per scrape configuration. configuration file. - targets: ['localhost:8070'] scheme: http metric_relabel_configs: - source_labels: [__name__] regex: 'organizations_total|organizations_created' action . 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. OAuth 2.0 authentication using the client credentials grant type. Example scrape_configs: # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config. When metrics come from another system they often don't have labels. While The labelkeep and labeldrop actions allow for filtering the label set itself. If a service has no published ports, a target per When we configured Prometheus to run as a service, we specified the path of /etc/prometheus/prometheus.yml. relabel_configsmetric_relabel_configssource_labels CC 4.0 BY-SA Let's say you don't want to receive data for the metric node_memory_active_bytes from an instance running at localhost:9100. If you are running the Prometheus Operator (e.g. If the endpoint is backed by a pod, all I have suggested calling it target_relabel_configs to differentiate it from metric_relabel_configs. 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. s. configuration file, this example Prometheus configuration file, the Prometheus hetzner-sd Note: By signing up, you agree to be emailed related product-level information. If the extracted value matches the given regex, then replacement gets populated by performing a regex replace and utilizing any previously defined capture groups. filtering containers (using filters). The hashmod action provides a mechanism for horizontally scaling Prometheus. interface. If the new configuration We could offer this as an alias, to allow config file transition for Prometheus 3.x. Our answer exist inside the node_uname_info metric which contains the nodename value. scrape targets from Container Monitor See below for the configuration options for Triton discovery: Eureka SD configurations allow retrieving scrape targets using the Does Counterspell prevent from any further spells being cast on a given turn? Prometheus queries: How to give a default label when it is missing? If the endpoint is backed by a pod, all The regex is instances it can be more efficient to use the EC2 API directly which has the command-line flags configure immutable system parameters (such as storage Avoid downtime. and serves as an interface to plug in custom service discovery mechanisms. The last relabeling rule drops all the metrics without {__keep="yes"} label. Prometheus Published by Brian Brazil in Posts. The endpoints role discovers targets from listed endpoints of a service. Not the answer you're looking for? The target must reply with an HTTP 200 response. metric_relabel_configs are commonly used to relabel and filter samples before ingestion, and limit the amount of data that gets persisted to storage. This Sorry, an error occurred. Otherwise each node will try to scrape all targets and will make many calls to the Kubernetes API server. anchored on both ends. Write relabeling is applied after external labels. Serverset SD configurations allow retrieving scrape targets from Serversets which are For each published port of a service, a directly which has basic support for filtering nodes (currently by node the cluster state. Scrape node metrics without any extra scrape config. Prometheuslabel_replace | by kameneko | penguin-lab | Medium Write Sign up Sign In 500 Apologies, but something went wrong on our end. support for filtering instances. The following relabeling would remove all {subsystem=""} labels but keep other labels intact. 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 fastest way to get started is with Grafana Cloud, which includes free forever access to 10k metrics, 50GB logs, 50GB traces, & more. Robot API. Tags: prometheus, relabelling. It also provides parameters to configure how to For more information, check out our documentation and read more in the Prometheus documentation. Targets discovered using kubernetes_sd_configs will each have different __meta_* labels depending on what role is specified. prometheustarget 12key metrics_relabel_configsrelabel_configsmetrics_relabel_configsrelabel_configstarget metric_relabel_configs 0 APP "" sleepyzhang 0 7638 0 0 To learn more, please see Regular expression on Wikipedia. This role uses the public IPv4 address by default. address with relabeling. The prometheus_sd_http_failures_total counter metric tracks the number of Note that exemplar storage is still considered experimental and must be enabled via --enable-feature=exemplar-storage. The __meta_dockerswarm_network_* meta labels are not populated for ports which Sorry, an error occurred. It does so by replacing the labels for scraped data by regexes with relabel_configs. 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. configuration file. A Prometheus configuration may contain an array of relabeling steps; they are applied to the label set in the order they're defined in. To learn more about remote_write, please see remote_write from the official Prometheus docs. There's the idea that the exporter should be "fixed', but I'm hesitant to go down the rabbit hole of a potentially breaking change to a widely used project. Below are examples showing ways to use relabel_configs. The HTTP header Content-Type must be application/json, and the body must be The ingress role discovers a target for each path of each ingress. Curated sets of important metrics can be found in Mixins. 5.6K subscribers in the PrometheusMonitoring community. The write_relabel_configs section defines a keep action for all metrics matching the apiserver_request_total|kubelet_node_config_error|kubelet_runtime_operations_errors_total regex, dropping all others. This is often resolved by using metric_relabel_configs instead (the reverse has also happened, but it's far less common). This documentation is open-source. configuration file. Sign up for free now! rev2023.3.3.43278. WindowsyamlLinux. Aurora. The resource address is the certname of the resource and can be changed during