configuration file defines everything related to scraping jobs and their has the same configuration format and actions as target relabeling. for a detailed example of configuring Prometheus for Docker Swarm. Prometheus applies this relabeling and dropping step after performing target selection using relabel_configs and metric selection and relabeling using metric_relabel_configs. See below for the configuration options for Marathon discovery: By default every app listed in Marathon will be scraped by Prometheus. Use the following to filter IN metrics collected for the default targets using regex based filtering. First off, the relabel_configs key can be found as part of a scrape job definition. In many cases, heres where internal labels come into play. This SD discovers resources and will create a target for each resource returned This 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. There is a list of directly which has basic support for filtering nodes (currently by node and serves as an interface to plug in custom service discovery mechanisms. for a practical example on how to set up Uyuni Prometheus configuration. Additionally, relabel_configs allow selecting Alertmanagers from discovered external labels send identical alerts. If it finds the instance_ip label, it renames this label to host_ip. Additional helpful documentation, links, and articles: How to set up and visualize synthetic monitoring at scale with Grafana Cloud, Using Grafana Cloud to drive manufacturing plant efficiency. The nodes role is used to discover Swarm nodes. After relabeling, the instance label is set to the value of __address__ by default if changes resulting in well-formed target groups are applied. to scrape them. To play around with and analyze any regular expressions, you can use RegExr. This can be See below for the configuration options for Scaleway discovery: Uyuni SD configurations allow retrieving scrape targets from managed systems changed with relabeling, as demonstrated in the Prometheus scaleway-sd sending a HTTP POST request to the /-/reload endpoint (when the --web.enable-lifecycle flag is enabled). For reference, heres our guide to Reducing Prometheus metrics usage with relabeling. Lets start off with source_labels. 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 Why do academics stay as adjuncts for years rather than move around? These are SmartOS zones or lx/KVM/bhyve branded zones. type Config struct {GlobalConfig GlobalConfig `yaml:"global"` AlertingConfig AlertingConfig `yaml:"alerting,omitempty"` RuleFiles []string `yaml:"rule_files,omitempty"` ScrapeConfigs []*ScrapeConfig `yaml:"scrape_configs,omitempty"` . 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. To enable allowlisting in Prometheus, use the keep and labelkeep actions with any relabeling configuration. The result can then be matched against using a regex, and an action operation can be performed if a match occurs. So the solution I used is to combine an existing value containing what we want (the hostnmame) with a metric from the node exporter. 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 . Since weve used default regex, replacement, action, and separator values here, they can be omitted for brevity. Targets may be statically configured via the static_configs parameter or Open positions, Check out the open source projects we support Lightsail SD configurations allow retrieving scrape targets from AWS Lightsail configuration file. and exposes their ports as targets. my/path/tg_*.json. They allow us to filter the targets returned by our SD mechanism, as well as manipulate the labels it sets. 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. For Robot API. 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. Triton SD configurations allow retrieving Yes, I know, trust me I don't like either but it's out of my control. This relabeling occurs after target selection. For example, kubelet is the metric filtering setting for the default target kubelet. valid JSON. 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. - the incident has nothing to do with me; can I use this this way? Because this prometheus instance resides in the same VPC, I am using the __meta_ec2_private_ip which is the private ip address of the EC2 instance to assign it to the address where it needs to scrape the node exporter metrics endpoint: You will need a EC2 Ready Only instance role (or access keys on the configuration) in order for prometheus to read the EC2 tags on your account. will periodically check the REST endpoint and Please help improve it by filing issues or pull requests. . Downloads. integrations still uniquely labeled once the labels are removed. to filter proxies and user-defined tags. If shipping samples to Grafana Cloud, you also have the option of persisting samples locally, but preventing shipping to remote storage. service port. Nomad SD configurations allow retrieving scrape targets from Nomad's Step 2: Scrape Prometheus sources and import metrics. from the /metrics page) that you want to manipulate that's where metric_relabel_configs applies. For each endpoint Hetzner Cloud API and The following snippet of configuration demonstrates an allowlisting approach, where the specified metrics are shipped to remote storage, and all others dropped. Catalog API. Relabeling is a powerful tool to dynamically rewrite the label set of a target before The file is written in YAML format, Write relabeling is applied after external labels. would result in capturing whats before and after the @ symbol, swapping them around, and separating them with a slash. "After the incident", I started to be more careful not to trip over things. prefix is guaranteed to never be used by Prometheus itself. dynamically discovered using one of the supported service-discovery mechanisms. You can add additional metric_relabel_configs sections that replace and modify labels here. This will also reload any configured rule files. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. If not all // Config is the top-level configuration for Prometheus's config files. Using metric_relabel_configs, you can drastically reduce your Prometheus metrics usage by throwing out unneeded samples. Prometheus also provides some internal labels for us. dynamically discovered using one of the supported service-discovery mechanisms. To learn how to do this, please see Sending data from multiple high-availability Prometheus instances. Kubernetes' REST API and always staying synchronized with But what I found to actually work is the simple and so blindingly obvious that I didn't think to even try: I.e., simply applying a target label in the scrape config. Finally, use write_relabel_configs in a remote_write configuration to select which series and labels to ship to remote storage. 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. configuration. This SD discovers "containers" and will create a target for each network IP and port the container is configured to expose. write_relabel_configs is relabeling applied to samples before sending them Discover Packages github.com/prometheus/prometheus config config package Version: v0.42. users with thousands of services it can be more efficient to use the Consul API In our config, we only apply a node-exporter scrape config to instances which are tagged PrometheusScrape=Enabled, then we use the Name tag, and assign its value to the instance tag, and the similarly we assign the Environment tag value to the environment promtheus label value. filtering containers (using filters). way to filter services or nodes for a service based on arbitrary labels. instances. with this feature. - Key: Name, Value: pdn-server-1 configuration file. in the following places, preferring the first location found: If Prometheus is running within GCE, the service account associated with the The private IP address is used by default, but may be changed to
determines the relabeling action to take: Care must be taken with labeldrop and labelkeep to ensure that metrics are 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.. This reduced set of targets corresponds to Kubelet https-metrics scrape endpoints. If the new configuration the public IP address with relabeling. PuppetDB resources. - ip-192-168-64-29.multipass:9100 Additional config for this answer: contexts. 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. EC2 SD configurations allow retrieving scrape targets from AWS EC2 To drop a specific label, select it using source_labels and use a replacement value of "". Prometheus needs to know what to scrape, and that's where service discovery and relabel_configs come in. You can either create this configmap or edit an existing one. 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. discover scrape targets, and may optionally have the For each declared To learn more about remote_write configuration parameters, please see remote_write from the Prometheus docs. - Key: Environment, Value: dev. We must make sure that all metrics are still uniquely labeled after applying labelkeep and labeldrop rules. configuration file. available as a label (see below). It does so by replacing the labels for scraped data by regexes with relabel_configs. 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. 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. You can, for example, only keep specific metric names. Prometheus #Prometheus SoundCloud (TSDB).2012, Prometheus,.Prometheus 2016 CNCF ( Cloud Native Computing Fou. An example might make this clearer. To learn more about Prometheus service discovery features, please see Configuration from the Prometheus docs. Published by Brian Brazil in Posts. service is created using the port parameter defined in the SD configuration. metric_relabel_configs relabel_configsreplace Prometheus K8S . refresh interval. Sorry, an error occurred. For example, if a Pod backing the Nginx service has two ports, we only scrape the port named web and drop the other. input to a subsequent relabeling step), use the __tmp label name prefix. The prometheus_sd_http_failures_total counter metric tracks the number of Prometheus supports relabeling, which allows performing the following tasks: Adding new label Updating existing label Rewriting existing label Updating metric name Removing unneeded labels. Since the (. May 30th, 2022 3:01 am Relabel configs allow you to select which targets you want scraped, and what the target labels will be. Once the targets have been defined, the metric_relabel_configs steps are applied after the scrape and allow us to select which series we would like to ingest into Prometheus storage. Use Grafana to turn failure into resilience. can be more efficient to use the Swarm API directly which has basic support for This service discovery uses the Extracting labels from legacy metric names. support for filtering instances. interval and timeout. For each published port of a service, a The second relabeling rule adds {__keep="yes"} label to metrics with empty `mountpoint` label, e.g. See this example Prometheus configuration file This minimal relabeling snippet searches across the set of scraped labels for the instance_ip label. 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:. Below are examples of how to do so. 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. Where must be unique across all scrape configurations. File-based service discovery provides a more generic way to configure static targets One is for the standard Prometheus configurations as documented in <scrape_config> in the Prometheus documentation. configuration file, the Prometheus linode-sd I'm not sure if that's helpful. The extracted string would then be set written out to the target_label and might result in {address="podname:8080}. The relabel_configs section is applied at the time of target discovery and applies to each target for the job. relabeling. If running outside of GCE make sure to create an appropriate Serversets are commonly The endpointslice role discovers targets from existing endpointslices. The terminal should return the message "Server is ready to receive web requests." Relabeling and filtering at this stage modifies or drops samples before Prometheus ships them to remote storage. Vultr SD configurations allow retrieving scrape targets from Vultr. Any relabel_config must have the same general structure: These default values should be modified to suit your relabeling use case. rev2023.3.3.43278. Before applying these techniques, ensure that youre deduplicating any samples sent from high-availability Prometheus clusters. Marathon REST API. 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 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 metrics without this label. And if one doesn't work you can always try the other! With a (partial) config that looks like this, I was able to achieve the desired result. configuration file, this example Prometheus configuration file, the Prometheus hetzner-sd configuration file, the Prometheus uyuni-sd configuration file, the Prometheus vultr-sd instance it is running on should have at least read-only permissions to the
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