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. Staging Ground Beta 1 Recap, and Reviewers needed for Beta 2. 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 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. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? The relabel_config step will use this number to populate the target_label with the result of the MD5(extracted value) % modulus expression. After changing the file, the prometheus service will need to be restarted to pickup the changes. Remote development environments that secure your source code and sensitive data available as a label (see below). 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 (relabel_config) prometheus . Prometheus will periodically check the REST endpoint and create a target for every discovered server. relabeling is completed. Use the metric_relabel_configs section to filter metrics after scraping. The __scheme__ and __metrics_path__ labels relabeling. instances. configuration. Droplets API. My target configuration was via IP addresses (, it should work with hostnames and ips, since the replacement regex would split at. Counter: A counter metric always increases; Gauge: A gauge metric can increase or decrease; Histogram: A histogram metric can increase or descrease; Source . 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. The the public IP address with relabeling. input to a subsequent relabeling step), use the __tmp label name prefix. You can add additional metric_relabel_configs sections that replace and modify labels here. Prometheus fetches an access token from the specified endpoint with Mixins are a set of preconfigured dashboards and alerts. The labels can be used in the relabel_configs section to filter targets or replace labels for the targets. A scrape_config section specifies a set of targets and parameters describing how Each instance defines a collection of Prometheus-compatible scrape_configs and remote_write rules. filepath from which the target was extracted. See below for the configuration options for PuppetDB discovery: See this example Prometheus configuration file If the new configuration These relabeling steps are applied before the scrape occurs and only have access to labels added by Prometheus Service Discovery. additional container ports of the pod, not bound to an endpoint port, are discovered as targets as well. type Config struct {GlobalConfig GlobalConfig `yaml:"global"` AlertingConfig AlertingConfig `yaml:"alerting,omitempty"` RuleFiles []string `yaml:"rule_files,omitempty"` ScrapeConfigs []*ScrapeConfig `yaml:"scrape_configs,omitempty"` . Use Grafana to turn failure into resilience. - targets: ['localhost:8070'] scheme: http metric_relabel_configs: - source_labels: [__name__] regex: 'organizations_total|organizations_created' action . To learn more about them, please see Prometheus Monitoring Mixins. the command-line flags configure immutable system parameters (such as storage Using the write_relabel_config entry shown below, you can target the metric name using the __name__ label in combination with the instance name. way to filter tasks, services or nodes. Blog | Training | Book | Privacy, relabel_configs vs metric_relabel_configs. Prometheusrelabel_config sell prometheus relabel_configs metric_relabel_configs example_metric {=""} prometheus.yaml instance. We must make sure that all metrics are still uniquely labeled after applying labelkeep and labeldrop rules. The target address defaults to the private IP address of the network node object in the address type order of NodeInternalIP, NodeExternalIP, So without further ado, lets get into it! For example, if a Pod backing the Nginx service has two ports, we only scrape the port named web and drop the other. PuppetDB resources. Choosing which metrics and samples to scrape, store, and ship to Grafana Cloud can seem quite daunting at first. Note that exemplar storage is still considered experimental and must be enabled via --enable-feature=exemplar-storage. source_labels and separator Let's start off with source_labels. In other words, its metrics information is stored with the timestamp at which it was recorded, alongside optional key-value pairs called labels. You can also manipulate, transform, and rename series labels using relabel_config. A static config has a list of static targets and any extra labels to add to them. This article provides instructions on customizing metrics scraping for a Kubernetes cluster with the metrics addon in Azure Monitor. See below for the configuration options for Triton discovery: Eureka SD configurations allow retrieving scrape targets using the One of the following
types can be configured to discover targets: The hypervisor role discovers one target per Nova hypervisor node. tracing_config configures exporting traces from Prometheus to a tracing backend via the OTLP protocol. Omitted fields take on their default value, so these steps will usually be shorter. For readability its usually best to explicitly define a relabel_config. Metric relabeling is applied to samples as the last step before ingestion. 2023 The Linux Foundation. Targets may be statically configured via the static_configs parameter or 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 This will also reload any configured rule files. Grafana Cloud is the easiest way to get started with metrics, logs, traces, and dashboards. 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. configuration file. service port. Alertmanagers may be statically configured via the static_configs parameter or metric_relabel_configs by contrast are applied after the scrape has happened, but before the data is ingested by the storage system. When we configured Prometheus to run as a service, we specified the path of /etc/prometheus/prometheus.yml. 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. relabel_configs: - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scrape] action: keep regex: true // keep targets with label __meta_kubernetes_service_annotation_prometheus_io_scrape equals 'true', // which means the user added prometheus.io/scrape: true in the service's annotation. in the following places, preferring the first location found: If Prometheus is running within GCE, the service account associated with the Any label pairs whose names match the provided regex will be copied with the new label name given in the replacement field, by utilizing group references (${1}, ${2}, etc). Tags: prometheus, relabelling. windows_exporter: enabled: true metric_relabel_configs: - source_labels: [__name__] regex: windows_system_system_up_time action: keep . In the general case, one scrape configuration specifies a single 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. Configuration file To specify which configuration file to load, use the --config.file flag. This service discovery uses the main IPv4 address by default, which that be You can additionally define remote_write-specific relabeling rules here. For users with thousands of containers it For example, if the resource ID is /subscriptions/00000000-0000-0000-0000-000000000000/resourcegroups/rg-name/providers/Microsoft.ContainerService/managedClusters/clustername, the cluster label is clustername. It is 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. Advanced Setup: Configure custom Prometheus scrape jobs for the daemonset To play around with and analyze any regular expressions, you can use RegExr. The ama-metrics replicaset pod consumes the custom Prometheus config and scrapes the specified targets. directly which has basic support for filtering nodes (currently by node The labelmap action is used to map one or more label pairs to different label names. I've been trying in vai for a month to find a coherent explanation of group_left, and expressions aren't labels. label is set to the value of the first passed URL parameter called . 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. The extracted string would then be set written out to the target_label and might result in {address="podname:8080}. instances. prometheus prometheus server Pull Push . refresh interval. Docker SD configurations allow retrieving scrape targets from Docker Engine hosts. Finally, the write_relabel_configs block applies relabeling rules to the data just before its sent to a remote endpoint. The nodes role is used to discover Swarm nodes. This solution stores data at scrape-time with the desired labels, no need for funny PromQL queries or hardcoded hacks. 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. write_relabel_configs is relabeling applied to samples before sending them Using a standard prometheus config to scrape two targets: This feature allows you to filter through series labels using regular expressions and keep or drop those that match. Heres an example. .). 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. prometheus.yml This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. See below for the configuration options for GCE discovery: Credentials are discovered by the Google Cloud SDK default client by looking Published by Brian Brazil in Posts. compute resources. Not the answer you're looking for? Much of the content here also applies to Grafana Agent users. a port-free target per container is created for manually adding a port via relabeling. 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. The private IP address is used by default, but may be changed to You can either create this configmap or edit an existing one. To enable allowlisting in Prometheus, use the keep and labelkeep actions with any relabeling configuration. The last path segment Going back to our extracted values, and a block like this. *) to catch everything from the source label, and since there is only one group we use the replacement as ${1}-randomtext and use that value to apply it as the value of the given target_label which in this case is for randomlabel, which will be in this case: In this case we want to relabel the __address__ and apply the value to the instance label, but we want to exclude the :9100 from the __address__ label: On AWS EC2 you can make use of the ec2_sd_config where you can make use of EC2 Tags, to set the values of your tags to prometheus label values. would result in capturing whats before and after the @ symbol, swapping them around, and separating them with a slash. metric_relabel_configs relabel_configsreplace Prometheus K8S . instances, as well as Serversets are commonly *), so if not specified, it will match the entire input. See below for the configuration options for OpenStack discovery: OVHcloud SD configurations allow retrieving scrape targets from OVHcloud's dedicated servers and VPS using 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. Each target has a meta label __meta_url during the prometheustarget 12key metrics_relabel_configsrelabel_configsmetrics_relabel_configsrelabel_configstarget metric_relabel_configs 0 APP "" sleepyzhang 0 7638 0 0 Add a new label called example_label with value example_value to every metric of the job. A configuration reload is triggered by sending a SIGHUP to the Prometheus process or This is generally useful for blackbox monitoring of a service. This reduced set of targets corresponds to Kubelet https-metrics scrape endpoints. Making statements based on opinion; back them up with references or personal experience. This is to ensure that different components that consume this label will adhere to the basic alphanumeric convention. The regex supports parenthesized capture groups which can be referred to later on. For example, kubelet is the metric filtering setting for the default target kubelet. Finally, use write_relabel_configs in a remote_write configuration to select which series and labels to ship to remote storage. for a detailed example of configuring Prometheus for Kubernetes. The new label will also show up in the cluster parameter dropdown in the Grafana dashboards instead of the default one. See this example Prometheus configuration file Why are physically impossible and logically impossible concepts considered separate in terms of probability? See the Prometheus marathon-sd configuration file required for the replace, keep, drop, labelmap,labeldrop and labelkeep actions. Overview. How to use Slater Type Orbitals as a basis functions in matrix method correctly? Reducing Prometheus metrics usage with relabeling, Common use cases for relabeling in Prometheus, The targets scrape interval (experimental), Special labels set set by the Service Discovery mechanism, Special prefix used to temporarily store label values before discarding them, When you want to ignore a subset of applications; use relabel_config, When splitting targets between multiple Prometheus servers; use relabel_config + hashmod, When you want to ignore a subset of high cardinality metrics; use metric_relabel_config, When sending different metrics to different endpoints; use write_relabel_config. . port of a container, a single target is generated. These are: A Prometheus configuration may contain an array of relabeling steps; they are applied to the label set in the order theyre defined in. For users with thousands of tasks it Email update@grafana.com for help. In this scenario, on my EC2 instances I have 3 tags: Prometheus supports relabeling, which allows performing the following tasks: Adding new label Updating existing label Rewriting existing label Updating metric name Removing unneeded labels. 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 This can be used to filter metrics with high cardinality or route metrics to specific remote_write targets. Service API. GCE SD configurations allow retrieving scrape targets from GCP GCE instances. which automates the Prometheus setup on top of Kubernetes. users with thousands of services it can be more efficient to use the Consul API The prometheus_sd_http_failures_total counter metric tracks the number of May 29, 2017. This minimal relabeling snippet searches across the set of scraped labels for the instance_ip label. Its value is set to the This is often resolved by using metric_relabel_configs instead (the reverse has also happened, but it's far less common). and exposes their ports as targets. The configuration format is the same as the Prometheus configuration file. Why is there a voltage on my HDMI and coaxial cables? 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: Weve come a long way, but were finally getting somewhere. By default, all apps will show up as a single job in Prometheus (the one specified Labels are sets of key-value pairs that allow us to characterize and organize whats actually being measured in a Prometheus metric. To collect all metrics from default targets, in the configmap under default-targets-metrics-keep-list, set minimalingestionprofile to false. OpenStack SD configurations allow retrieving scrape targets from OpenStack Nova 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. service is created using the port parameter defined in the SD configuration. with kube-prometheus-stack) then you can specify additional scrape config jobs to monitor your custom services. entities and provide advanced modifications to the used API path, which is exposed I used the answer to this post as a model for my request: https://stackoverflow.com/a/50357418 . IONOS Cloud API. Serverset data must be in the JSON format, the Thrift format is not currently supported. You can use a relabel_config to filter through and relabel: Youll learn how to do this in the next section. A relabel_configs configuration allows you to keep or drop targets returned by a service discovery mechanism like Kubernetes service discovery or AWS EC2 instance service discovery. A blog on monitoring, scale and operational Sanity. the cluster state. For more information, check out our documentation and read more in the Prometheus documentation. 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. Relabeling 4.1 . node-exporter.yaml . This service discovery method only supports basic DNS A, AAAA, MX and SRV 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. Consider the following metric and relabeling step. Relabeling is a powerful tool to dynamically rewrite the label set of a target before Furthermore, only Endpoints that have https-metrics as a defined port name are kept. Alert configuration file, the Prometheus marathon-sd configuration file, the Prometheus eureka-sd configuration file, the Prometheus scaleway-sd The default regex value is (. are set to the scheme and metrics path of the target respectively. 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 target must reply with an HTTP 200 response. The __address__ label is set to the : address of the target. Finally, this configures authentication credentials and the remote_write queue. The regex is view raw prometheus.yml hosted with by GitHub , Prometheus . The relabel_configs section is applied at the time of target discovery and applies to each target for the job. integrations dynamically discovered using one of the supported service-discovery mechanisms. For example, you may have a scrape job that fetches all Kubernetes Endpoints using a kubernetes_sd_configs parameter. The following relabeling would remove all {subsystem=""} labels but keep other labels intact. The result can then be matched against using a regex, and an action operation can be performed if a match occurs. interface. discovery mechanism. To do this, use a relabel_config object in the write_relabel_configs subsection of the remote_write section of your Prometheus config. We have a generous free forever tier and plans for every use case. 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. 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. Linode APIv4. Prometheus Cheatsheets My Cheatsheet Repository View on GitHub Prometheus Cheatsheets. - Key: Environment, Value: dev. RFC6763. engine. 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. So the solution I used is to combine an existing value containing what we want (the hostnmame) with a metric from the node exporter. Discover Packages github.com/prometheus/prometheus config config package Version: v0.42. configuration file. This service discovery uses the public IPv4 address by default, by that can be Catalog API. rev2023.3.3.43278. Use metric_relabel_configs in a given scrape job to select which series and labels to keep, and to perform any label replacement operations. I'm not sure if that's helpful. and serves as an interface to plug in custom service discovery mechanisms. s. How do I align things in the following tabular environment? To learn how to discover high-cardinality metrics, please see Analyzing Prometheus metric usage.
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