prometheus relabel_configs vs metric_relabel_configs

instances, as well as 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. directly which has basic support for filtering nodes (currently by node Lightsail SD configurations allow retrieving scrape targets from AWS Lightsail dynamically discovered using one of the supported service-discovery mechanisms. To bulk drop or keep labels, use the labelkeep and labeldrop actions. Kubernetes' REST API and always staying synchronized with This is experimental and could change in the future. This is generally useful for blackbox monitoring of an ingress. prometheus prometheus server Pull Push . A static_config allows specifying a list of targets and a common label set metric_relabel_configs /metricsmetric_relabel_configs 3.2.2 alertmanagers alertmanagers Prometheus alertmanagers Prometheuspushing alertmanager alertmanager target 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 . 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 Prometheus supports relabeling, which allows performing the following tasks: Adding new label Updating existing label Rewriting existing label Updating metric name Removing unneeded labels. This will also reload any configured rule files. integrations See below for the configuration options for Uyuni discovery: See the Prometheus uyuni-sd configuration file Scrape the kubernetes api server in the k8s cluster without any extra scrape config. We've looked at the full Life of a Label. as retrieved from the API server. config package - github.com/prometheus/prometheus/config - Go Packages The highest tagged major version is v2 . Or if youre using Prometheus Kubernetes service discovery you might want to drop all targets from your testing or staging namespaces. I've been trying in vai for a month to find a coherent explanation of group_left, and expressions aren't labels. 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 labelkeep and labeldrop actions allow for filtering the label set itself. Relabeling and filtering at this stage modifies or drops samples before Prometheus ships them to remote storage. To play around with and analyze any regular expressions, you can use RegExr. Targets may be statically configured via the static_configs parameter or To do this, use a relabel_config object in the write_relabel_configs subsection of the remote_write section of your Prometheus 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]. The account must be a Triton operator and is currently required to own at least one container. I am attempting to retrieve metrics using an API and the curl response appears to be in the correct format. It's not uncommon for a user to share a Prometheus config with a validrelabel_configs and wonder why it isn't taking effect. If the new configuration The label will end with '.pod_node_name'. with kube-prometheus-stack) then you can specify additional scrape config jobs to monitor your custom services. If you use quotes or backslashes in the regex, you'll need to escape them using a backslash. discovery mechanism. I have installed Prometheus on the same server where my Django app is running. The other is for the CloudWatch agent configuration. To learn how to discover high-cardinality metrics, please see Analyzing Prometheus metric usage. way to filter services or nodes for a service based on arbitrary labels. 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. 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. port of a container, a single target is generated. Omitted fields take on their default value, so these steps will usually be shorter. The endpointslice role discovers targets from existing endpointslices. Linode APIv4. in the configuration file), which can also be changed using relabeling. On the federation endpoint Prometheus can add labels When sending alerts we can alter alerts labels 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. By default, all apps will show up as a single job in Prometheus (the one specified It is the canonical way to specify static targets in a scrape Where may be a path ending in .json, .yml or .yaml. For users with thousands of containers it 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. When we configured Prometheus to run as a service, we specified the path of /etc/prometheus/prometheus.yml. To view all available command-line flags, run ./prometheus -h. Prometheus can reload its configuration at runtime. configuration file, the Prometheus marathon-sd configuration file, the Prometheus eureka-sd configuration file, the Prometheus scaleway-sd So if there are some expensive metrics you want to drop, or labels coming from the scrape itself (e.g. from underlying pods), the following labels are attached. node object in the address type order of NodeInternalIP, NodeExternalIP, 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. 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. It does so by replacing the labels for scraped data by regexes with relabel_configs. https://stackoverflow.com/a/64623786/2043385. This service discovery uses the public IPv4 address by default, by that can be Kuma SD configurations allow retrieving scrape target from the Kuma control plane. To learn more about remote_write configuration parameters, please see remote_write from the Prometheus docs. This is often resolved by using metric_relabel_configs instead (the reverse has also happened, but it's far less common). The labels can be used in the relabel_configs section to filter targets or replace labels for the targets. Below are examples of how to do so. 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. By using the following relabel_configs snippet, you can limit scrape targets for this job to those whose Service label corresponds to app=nginx and port name to web: The initial set of endpoints fetched by kuberentes_sd_configs in the default namespace can be very large depending on the apps youre running in your cluster. This minimal relabeling snippet searches across the set of scraped labels for the instance_ip label. service port. There is a small demo of how to use first NICs IP address by default, but that can be changed with relabeling. 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. Consider the following metric and relabeling step. changed with relabeling, as demonstrated in the Prometheus digitalocean-sd Vultr SD configurations allow retrieving scrape targets from Vultr. The job and instance label values can be changed based on the source label, just like any other label. way to filter containers. This to the remote endpoint. instance it is running on should have at least read-only permissions to the For reference, heres our guide to Reducing Prometheus metrics usage with relabeling. 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. The last path segment Otherwise the custom configuration will fail validation and won't be applied. They allow us to filter the targets returned by our SD mechanism, as well as manipulate the labels it sets. following meta labels are available on all targets during If the endpoint is backed by a pod, all Also, your values need not be in single quotes. The resource address is the certname of the resource and can be changed during An example might make this clearer. view raw prometheus.yml hosted with by GitHub , Prometheus . Prometheus is configured via command-line flags and a configuration file. ec2:DescribeAvailabilityZones permission if you want the availability zone ID Open positions, Check out the open source projects we support metric_relabel_configs are commonly used to relabel and filter samples before ingestion, and limit the amount of data that gets persisted to storage. 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. See below for the configuration options for EC2 discovery: The relabeling phase is the preferred and more powerful Prometheus #Prometheus SoundCloud (TSDB).2012, Prometheus,.Prometheus 2016 CNCF ( Cloud Native Computing Fou. See below for the configuration options for GCE discovery: Credentials are discovered by the Google Cloud SDK default client by looking You can also manipulate, transform, and rename series labels using relabel_config. Any other characters else will be replaced with _. Docker Swarm SD configurations allow retrieving scrape targets from Docker Swarm and exposes their ports as targets. To drop a specific label, select it using source_labels and use a replacement value of "". The new label will also show up in the cluster parameter dropdown in the Grafana dashboards instead of the default one. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. to He Wu, Prometheus Users The `relabel_config` is applied to labels on the discovered scrape targets, while `metrics_relabel_config` is applied to metrics collected from scrape targets.. For non-list parameters the Latest Published: Jan 31, 2023 License: Apache-2.0 Imports: 18 Imported by: 2,025 Details Valid go.mod file Redistributable license Tagged version In this guide, weve presented an overview of Prometheuss powerful and flexible relabel_config feature and how you can leverage it to control and reduce your local and Grafana Cloud Prometheus usage. . 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. First off, the relabel_configs key can be found as part of a scrape job definition. additional container ports of the pod, not bound to an endpoint port, are discovered as targets as well. Note: By signing up, you agree to be emailed related product-level information. Labels are sets of key-value pairs that allow us to characterize and organize whats actually being measured in a Prometheus metric. - Key: PrometheusScrape, Value: Enabled Aurora. metric_relabel_configs are commonly used to relabel and filter samples before ingestion, and limit the amount of data that gets persisted to storage. One of the following types can be configured to discover targets: The container role discovers one target per "virtual machine" owned by the account. The endpoint is queried periodically at the specified refresh interval. Once Prometheus scrapes a target, metric_relabel_configs allows you to define keep, drop and replace actions to perform on scraped samples: This sample piece of configuration instructs Prometheus to first fetch a list of endpoints to scrape using Kubernetes service discovery (kubernetes_sd_configs).

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