prometheus relabel_configs vs metric_relabel_configs prometheus relabel_configs vs metric_relabel_configs

For users with thousands of containers it IONOS Cloud API. This solution stores data at scrape-time with the desired labels, no need for funny PromQL queries or hardcoded hacks. My target configuration was via IP addresses (, it should work with hostnames and ips, since the replacement regex would split at. Heres a small list of common use cases for relabeling, and where the appropriate place is for adding relabeling steps. my/path/tg_*.json. Azure SD configurations allow retrieving scrape targets from Azure VMs. to scrape them. has the same configuration format and actions as target relabeling. One of the following roles can be configured to discover targets: The services role discovers all Swarm services yamlyaml. are published with mode=host. 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. Vultr SD configurations allow retrieving scrape targets from Vultr. - targets: ['localhost:8070'] scheme: http metric_relabel_configs: - source_labels: [__name__] regex: 'organizations_total|organizations_created' action . job. It also provides parameters to configure how to In this scenario, on my EC2 instances I have 3 tags: Using metric_relabel_configs, you can drastically reduce your Prometheus metrics usage by throwing out unneeded samples. instances it can be more efficient to use the EC2 API directly which has If a relabeling step needs to store a label value only temporarily (as the With a (partial) config that looks like this, I was able to achieve the desired result. ec2:DescribeAvailabilityZones permission if you want the availability zone ID If not all The job and instance label values can be changed based on the source label, just like any other label. If a container has no specified ports, Scrape kubelet in every node in the k8s cluster without any extra scrape config. Furthermore, only Endpoints that have https-metrics as a defined port name are kept. defined by the scheme described below. Eureka REST API. Endpoints are limited to the kube-system namespace. single target is generated. their API. Serverset SD configurations allow retrieving scrape targets from Serversets which are 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. For all targets discovered directly from the endpoints list (those not additionally inferred To review, open the file in an editor that reveals hidden Unicode characters. feature to replace the special __address__ label. In the extreme this can overload your Prometheus server, such as if you create a time series for each of hundreds of thousands of users. as retrieved from the API server. For example, if a Pod backing the Nginx service has two ports, we only scrape the port named web and drop the other. for a practical example on how to set up your Eureka app and your Prometheus Nomad SD configurations allow retrieving scrape targets from Nomad's Use __address__ as the source label only because that label will always exist and will add the label for every target of the job. To play around with and analyze any regular expressions, you can use RegExr. This Open positions, Check out the open source projects we support - Key: Name, Value: pdn-server-1 Finally, use write_relabel_configs in a remote_write configuration to select which series and labels to ship to remote storage. locations, amount of data to keep on disk and in memory, etc. discovery mechanism. is it query? IONOS SD configurations allows retrieving scrape targets from Mixins are a set of preconfigured dashboards and alerts. changed with relabeling, as demonstrated in the Prometheus scaleway-sd stored in Zookeeper. // Config is the top-level configuration for Prometheus's config files. The nodes role is used to discover Swarm nodes. configuration file, the Prometheus marathon-sd configuration file, the Prometheus eureka-sd configuration file, the Prometheus scaleway-sd There are seven available actions to choose from, so lets take a closer look. Hope you learned a thing or two about relabeling rules and that youre more comfortable with using them. . are set to the scheme and metrics path of the target respectively. metric_relabel_configs relabel_configsreplace Prometheus K8S . Brackets indicate that a parameter is optional. Service API. Relabel configs allow you to select which targets you want scraped, and what the target labels will be. The endpointslice role discovers targets from existing endpointslices. this functionality. to the remote endpoint. 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. Relabeling and filtering at this stage modifies or drops samples before Prometheus ingests them locally and ships them to remote storage. See below for the configuration options for Uyuni discovery: See the Prometheus uyuni-sd configuration file Tags: prometheus, relabelling. 5.6K subscribers in the PrometheusMonitoring community. Aurora. Please help improve it by filing issues or pull requests. I used the answer to this post as a model for my request: https://stackoverflow.com/a/50357418 . configuration file, the Prometheus linode-sd These relabeling steps are applied before the scrape occurs and only have access to labels added by Prometheus Service Discovery. DigitalOcean SD configurations allow retrieving scrape targets from DigitalOcean's configuration file. See below for the configuration options for Triton discovery: Eureka SD configurations allow retrieving scrape targets using the If the endpoint is backed by a pod, all As metric_relabel_configs are applied to every scraped timeseries, it is better to improve instrumentation rather than using metric_relabel_configs as a workaround on the Prometheus side. the command-line flags configure immutable system parameters (such as storage Downloads. 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. node-exporter.yaml . The cn role discovers one target for per compute node (also known as "server" or "global zone") making up the Triton infrastructure. Does Counterspell prevent from any further spells being cast on a given turn? The __scheme__ and __metrics_path__ labels The endpoints role discovers targets from listed endpoints of a service. for a practical example on how to set up your Marathon app and your Prometheus Note that the IP number and port used to scrape the targets is assembled as Remote development environments that secure your source code and sensitive data And if one doesn't work you can always try the other! Making statements based on opinion; back them up with references or personal experience. The __scrape_interval__ and __scrape_timeout__ labels are set to the target's 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 See below for the configuration options for GCE discovery: Credentials are discovered by the Google Cloud SDK default client by looking Please find below an example from other exporter (blackbox), but same logic applies for node exporter as well. 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. In the previous example, we may not be interested in keeping track of specific subsystems labels anymore. However, its usually best to explicitly define these for readability. 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 __param_ So if there are some expensive metrics you want to drop, or labels coming from the scrape itself (e.g. metadata and a single tag). Prometheus If the endpoint is backed by a pod, all Otherwise the custom configuration will fail validation and won't be applied. EC2 SD configurations allow retrieving scrape targets from AWS EC2 changed with relabeling, as demonstrated in the Prometheus hetzner-sd The prometheus_sd_http_failures_total counter metric tracks the number of It's not uncommon for a user to share a Prometheus config with a validrelabel_configs and wonder why it isn't taking effect. This reduced set of targets corresponds to Kubelet https-metrics scrape endpoints. For each declared 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). Write relabeling is applied after external 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. 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. I see that the node exporter provides the metric node_uname_info that contains the hostname, but how do I extract it from there? For details on custom configuration, see Customize scraping of Prometheus metrics in Azure Monitor. PuppetDB resources. kube-state-metricsAPI ServerDeploymentNodePodkube-state-metricsmetricsPrometheus . Posted by Ruan The tasks role discovers all Swarm tasks Metric Only alphanumeric characters are allowed. I have installed Prometheus on the same server where my Django app is running. This role uses the private IPv4 address by default. Blog | Training | Book | Privacy, relabel_configs vs metric_relabel_configs. This guide describes several techniques you can use to reduce your Prometheus metrics usage on Grafana Cloud. For example "test\'smetric\"s\"" and testbackslash\\*. 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]. Downloads. for a detailed example of configuring Prometheus with PuppetDB. Lets start off with source_labels. 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. You can either create this configmap or edit an existing one. This SD discovers resources and will create a target for each resource returned Prometheus Authors 2014-2023 | Documentation Distributed under CC-BY-4.0. This configuration does not impact any configuration set in metric_relabel_configs or relabel_configs. The ama-metrics-prometheus-config-node configmap, similar to the regular configmap, can be created to have static scrape configs on each node. For reference, heres our guide to Reducing Prometheus metrics usage with relabeling. Our answer exist inside the node_uname_info metric which contains the nodename value. configuration file. sudo systemctl restart prometheus and exposes their ports as targets. 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 Prometheus fetches an access token from the specified endpoint with *), so if not specified, it will match the entire input. See below for the configuration options for PuppetDB discovery: See this example Prometheus configuration file You can configure the metrics addon to scrape targets other than the default ones, using the same configuration format as the Prometheus configuration file. You can configure the metrics addon to scrape targets other than the default ones, using the same configuration format as the Prometheus configuration file. See below for the configuration options for OpenStack discovery: OVHcloud SD configurations allow retrieving scrape targets from OVHcloud's dedicated servers and VPS using s. Each instance defines a collection of Prometheus-compatible scrape_configs and remote_write rules. Marathon REST API. 1Prometheus. One source of confusion around relabeling rules is that they can be found in multiple parts of a Prometheus config file. can be more efficient to use the Docker API directly which has basic support for After relabeling, the instance label is set to the value of __address__ by default if Its value is set to the We could offer this as an alias, to allow config file transition for Prometheus 3.x. The __meta_dockerswarm_network_* meta labels are not populated for ports which This SD discovers "containers" and will create a target for each network IP and port the container is configured to expose. Relabelling. following meta labels are available on all targets during Overview. GCE SD configurations allow retrieving scrape targets from GCP GCE instances. Scrape cAdvisor in every node in the k8s cluster without any extra scrape config. 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 nodes (using filters). devops, docker, prometheus, Create a AWS Lambda Layer with Docker external labels send identical alerts. The __address__ label is set to the : address of the target. 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 See below for the configuration options for Docker Swarm discovery: The relabeling phase is the preferred and more powerful the target and vary between mechanisms. write_relabel_configs is relabeling applied to samples before sending them 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). This can be used to filter metrics with high cardinality or route metrics to specific remote_write targets. 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. Since weve used default regex, replacement, action, and separator values here, they can be omitted for brevity. After scraping these endpoints, Prometheus applies the metric_relabel_configs section, which drops all metrics whose metric name matches the specified regex. create a target group for every app that has at least one healthy task. Below are examples of how to do so. 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: For each endpoint For more information, check out our documentation and read more in the Prometheus documentation. This occurs after target selection using relabel_configs. which automates the Prometheus setup on top of Kubernetes. To bulk drop or keep labels, use the labelkeep and labeldrop actions. configuration file, the Prometheus uyuni-sd configuration file, the Prometheus vultr-sd service port. Heres an example. An alertmanager_config section specifies Alertmanager instances the Prometheus discover scrape targets, and may optionally have the target and its labels before scraping. It is the canonical way to specify static targets in a scrape 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. rev2023.3.3.43278. in the following places, preferring the first location found: If Prometheus is running within GCE, the service account associated with the If you use quotes or backslashes in the regex, you'll need to escape them using a backslash. We drop all ports that arent named web. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. where should i use this in prometheus? Or if youre using Prometheus Kubernetes service discovery you might want to drop all targets from your testing or staging namespaces. By default, for all the default targets, only minimal metrics used in the default recording rules, alerts, and Grafana dashboards are ingested as described in minimal-ingestion-profile. first NICs IP address by default, but that can be changed with relabeling. DNS servers to be contacted are read from /etc/resolv.conf. tracing_config configures exporting traces from Prometheus to a tracing backend via the OTLP protocol. instances, as well as Alert The following relabeling would remove all {subsystem=""} labels but keep other labels intact. created using the port parameter defined in the SD configuration. The labels can be used in the relabel_configs section to filter targets or replace labels for the targets. Only Targets may be statically configured via the static_configs parameter or 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't relabel with a nonexistent value in the request, you are limited to the different parameters that you gave to Prometheus or those that exists in the module use for the request (gcp,aws.). 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. valid JSON. and applied immediately. relabeling phase. There is a small demo of how to use way to filter tasks, services or nodes. Let's focus on one of the most common confusions around relabelling. The HAProxy metrics have been discovered by Prometheus. A static_config allows specifying a list of targets and a common label set Both of these methods are implemented through Prometheuss metric filtering and relabeling feature, relabel_config. Connect and share knowledge within a single location that is structured and easy to search. The replace action is most useful when you combine it with other fields. 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 Files may be provided in YAML or JSON format. This documentation is open-source. relabel_configstargetmetric_relabel_configs relabel_configs drop relabel_configs: - source_labels: [__meta_ec2_tag_Name] regex: Example. See below for the configuration options for Eureka discovery: See the Prometheus eureka-sd configuration file It does so by replacing the labels for scraped data by regexes with relabel_configs. To learn more about the general format for a relabel_config block, please see relabel_config from the Prometheus docs. The last relabeling rule drops all the metrics without {__keep="yes"} label. An additional scrape config uses regex evaluation to find matching services en masse, and targets a set of services based on label, annotation, namespace, or name. Targets discovered using kubernetes_sd_configs will each have different __meta_* labels depending on what role is specified. node_uname_info{nodename} -> instance -- I get a syntax error at startup. may contain a single * that matches any character sequence, e.g. In this case Prometheus would drop a metric like container_network_tcp_usage_total(. 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. This is generally useful for blackbox monitoring of an ingress. - Key: PrometheusScrape, Value: Enabled Next I tried metrics_relabel_configs but that doesn't seem to want to copy a label from a different metric, ie. There is a list of They are applied to the label set of each target in order of their appearance First off, the relabel_configs key can be found as part of a scrape job definition. prometheustarget 12key metrics_relabel_configsrelabel_configsmetrics_relabel_configsrelabel_configstarget metric_relabel_configs 0 APP "" sleepyzhang 0 7638 0 0