*) regex captures the entire label value, replacement references this capture group, $1, when setting the new target_label. Serversets are commonly the cluster state. 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. To specify which configuration file to load, use the --config.file flag. users with thousands of services it can be more efficient to use the Consul API Labels starting with __ will be removed from the label set after target To learn how to discover high-cardinality metrics, please see Analyzing Prometheus metric usage. 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 metadata and a single tag). Below are examples of how to do so. Note that exemplar storage is still considered experimental and must be enabled via --enable-feature=exemplar-storage. RFC6763. 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. value is set to the specified default. 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. Hetzner SD configurations allow retrieving scrape targets from Prometheus supports relabeling, which allows performing the following tasks: Adding new label Updating existing label Rewriting existing label Updating metric name Removing unneeded labels. domain names which are periodically queried to discover a list of targets. Only Relabel configs allow you to select which targets you want scraped, and what the target labels will be. See the Prometheus marathon-sd configuration file 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. Hetzner Cloud API and metric_relabel_configs offers one way around that. are set to the scheme and metrics path of the target respectively. # prometheus $ vim /usr/local/prometheus/prometheus.yml $ sudo systemctl restart prometheus created using the port parameter defined in the SD configuration. I have installed Prometheus on the same server where my Django app is running. The result can then be matched against using a regex, and an action operation can be performed if a match occurs. The __scrape_interval__ and __scrape_timeout__ labels are set to the target's locations, amount of data to keep on disk and in memory, etc. However, its usually best to explicitly define these for readability. For of your services provide Prometheus metrics, you can use a Marathon label and changed with relabeling, as demonstrated in the Prometheus linode-sd port of a container, a single target is generated. Service API. Prometheus is configured via command-line flags and a configuration file. 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]. action: keep. The target And if one doesn't work you can always try the other! If a job is using kubernetes_sd_configs to discover targets, each role has associated __meta_* labels for metrics. Enter relabel_configs, a powerful way to change metric labels dynamically. instances. label is set to the value of the first passed URL parameter called . in the configuration file. Use metric_relabel_configs in a given scrape job to select which series and labels to keep, and to perform any label replacement operations. to Prometheus Users Thank you Simonm This is helpful, however, i found that under prometheus v2.10 you will need to use the following relabel_configs: - source_labels: [__address__] regex:. Recall that these metrics will still get persisted to local storage unless this relabeling configuration takes place in the metric_relabel_configs section of a scrape job. The other is for the CloudWatch agent configuration. Using the __meta_kubernetes_service_label_app label filter, endpoints whose corresponding services do not have the app=nginx label will be dropped by this scrape job. See below for the configuration options for Scaleway discovery: Uyuni SD configurations allow retrieving scrape targets from managed systems A consists of seven fields. You can additionally define remote_write-specific relabeling rules here. contexts. Relabel configs allow you to select which targets you want scraped, and what the target labels will be. For users with thousands of tasks it Its value is set to the This service discovery method only supports basic DNS A, AAAA, MX and SRV Find centralized, trusted content and collaborate around the technologies you use most. 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 addition, the instance label for the node will be set to the node name In the general case, one scrape configuration specifies a single Vultr SD configurations allow retrieving scrape targets from Vultr. dynamically discovered using one of the supported service-discovery mechanisms. Multiple relabeling steps can be configured per scrape configuration. (relabel_config) prometheus . PuppetDB resources. 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. ), but not system components (kubelet, node-exporter, kube-scheduler, .,) system components do not need most of the labels (endpoint . write_relabel_configs is relabeling applied to samples before sending them <__meta_consul_address>:<__meta_consul_service_port>. A blog on monitoring, scale and operational Sanity. Well demo all the highlights of the major release: new and updated visualizations and themes, data source improvements, and Enterprise features. I am attempting to retrieve metrics using an API and the curl response appears to be in the correct format. Prometheus is configured through a single YAML file called prometheus.yml. Some of these special labels available to us are. One is for the standard Prometheus configurations as documented in <scrape_config> in the Prometheus documentation. A DNS-based service discovery configuration allows specifying a set of DNS The 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. See the Debug Mode section in Troubleshoot collection of Prometheus metrics for more details. This service discovery uses the create a target group for every app that has at least one healthy task. Each target has a meta label __meta_filepath during the Prometheus Authors 2014-2023 | Documentation Distributed under CC-BY-4.0. Nerve SD configurations allow retrieving scrape targets from AirBnB's Nerve which are stored in Step 2: Scrape Prometheus sources and import metrics. With this, the node_memory_Active_bytes metric which contains only instance and job labels by default, gets an additional nodename label that you can use in the description field of Grafana. So the solution I used is to combine an existing value containing what we want (the hostnmame) with a metric from the node exporter. You can also manipulate, transform, and rename series labels using relabel_config. *), so if not specified, it will match the entire input. Alertmanagers may be statically configured via the static_configs parameter or address one target is discovered per port. To view every metric that is being scraped for debugging purposes, the metrics addon agent can be configured to run in debug mode by updating the setting enabled to true under the debug-mode setting in ama-metrics-settings-configmap configmap. integrations with this A configuration reload is triggered by sending a SIGHUP to the Prometheus process or Using metric_relabel_configs, you can drastically reduce your Prometheus metrics usage by throwing out unneeded samples. The __scheme__ and __metrics_path__ labels Triton SD configurations allow retrieving The scrape config below uses the __meta_* labels added from the kubernetes_sd_configs for the pod role to filter for pods with certain annotations. 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. for them. The node-exporter config below is one of the default targets for the daemonset pods. stored in Zookeeper. Please find below an example from other exporter (blackbox), but same logic applies for node exporter as well. ), the Both of these methods are implemented through Prometheuss metric filtering and relabeling feature, relabel_config. support for filtering instances. determines the relabeling action to take: Care must be taken with labeldrop and labelkeep to ensure that metrics are way to filter targets based on arbitrary 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. "After the incident", I started to be more careful not to trip over things. This SD discovers "monitoring assignments" based on Kuma Dataplane Proxies, The regex is Use __address__ as the source label only because that label will always exist and will add the label for every target of the job. in the following places, preferring the first location found: If Prometheus is running within GCE, the service account associated with the The regex supports parenthesized capture groups which can be referred to later on. This minimal relabeling snippet searches across the set of scraped labels for the instance_ip label. Thats all for today! can be more efficient to use the Swarm API directly which has basic support for changed with relabeling, as demonstrated in the Prometheus scaleway-sd configuration file. Choosing which metrics and samples to scrape, store, and ship to Grafana Cloud can seem quite daunting at first. Create Your Python's Custom Prometheus Exporter Tony DevOps in K8s K9s, Terminal Based UI to Manage Your Cluster Kirshi Yin in Better Programming How To Monitor a Spring Boot App With. Prometheus will periodically check the REST endpoint and create a target for every discovered server. The instance role discovers one target per network interface of Nova The Parameters that arent explicitly set will be filled in using default values. 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. 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 Where must be unique across all scrape configurations. Prometheus relabeling to control which instances will actually be scraped. The prometheus_sd_http_failures_total counter metric tracks the number of this functionality. How can I 'join' two metrics in a Prometheus query? You may wish to check out the 3rd party Prometheus Operator, and serves as an interface to plug in custom service discovery mechanisms. Use Grafana to turn failure into resilience. The relabel_config step will use this number to populate the target_label with the result of the MD5(extracted value) % modulus expression. Additionally, relabel_configs allow advanced modifications to any 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. This service discovery uses the main IPv4 address by default, which that be For all targets discovered directly from the endpoints list (those not additionally inferred In this case Prometheus would drop a metric like container_network_tcp_usage_total(. Note: By signing up, you agree to be emailed related product-level information. The global configuration specifies parameters that are valid in all other configuration Changes to all defined files are detected via disk watches Let's say you don't want to receive data for the metric node_memory_active_bytes from an instance running at localhost:9100. Prometheus Relabling Using a standard prometheus config to scrape two targets: - ip-192-168-64-29.multipass:9100 - ip-192-168-64-30.multipass:9100