So the solution I used is to combine an existing value containing what we want (the hostnmame) with a metric from the node exporter. When we configured Prometheus to run as a service, we specified the path of /etc/prometheus/prometheus.yml. The replacement field defaults to just $1, the first captured regex, so its sometimes omitted. See below for the configuration options for Uyuni discovery: See the Prometheus uyuni-sd configuration file There's the idea that the exporter should be "fixed', but I'm hesitant to go down the rabbit hole of a potentially breaking change to a widely used project. Scrape kubelet in every node in the k8s cluster without any extra scrape config. "After the incident", I started to be more careful not to trip over things. configuration file defines everything related to scraping jobs and their Consul setups, the relevant address is in __meta_consul_service_address. Files must contain a list of static configs, using these formats: As a fallback, the file contents are also re-read periodically at the specified The extracted string would then be set written out to the target_label and might result in {address="podname:8080}. One of the following roles can be configured to discover targets: The services role discovers all Swarm services Files may be provided in YAML or JSON format. These relabeling steps are applied before the scrape occurs and only have access to labels added by Prometheus Service Discovery. - Key: Name, Value: pdn-server-1 and serves as an interface to plug in custom service discovery mechanisms. IONOS SD configurations allows retrieving scrape targets from Remote development environments that secure your source code and sensitive data The ingress role discovers a target for each path of each ingress. metric_relabel_configs are commonly used to relabel and filter samples before ingestion, and limit the amount of data that gets persisted to storage. You can place all the logic in the targets section using some separator - I used @ and then process it with regex. As an example, consider the following two metrics. Sign up for free now! Grafana Labs uses cookies for the normal operation of this website. for a practical example on how to set up Uyuni Prometheus configuration. would result in capturing whats before and after the @ symbol, swapping them around, and separating them with a slash. Blog | Training | Book | Privacy, relabel_configs vs metric_relabel_configs. external labels send identical alerts. This role uses the private IPv4 address by default. Reload Prometheus and check out the targets page: Great! The prometheus_sd_http_failures_total counter metric tracks the number of See below for the configuration options for Lightsail discovery: Linode SD configurations allow retrieving scrape targets from Linode's For each endpoint The following meta labels are available on targets during relabeling: See below for the configuration options for Azure discovery: Consul SD configurations allow retrieving scrape targets from Consul's A Prometheus configuration may contain an array of relabeling steps; they are applied to the label set in the order they're defined in. Where may be a path ending in .json, .yml or .yaml. For reference, heres our guide to Reducing Prometheus metrics usage with relabeling. The difference between the phonemes /p/ and /b/ in Japanese. The scrape intervals have to be set by customer in the correct format specified here, else the default value of 30 seconds will be applied to the corresponding targets. Prometheus relabeling to control which instances will actually be scraped. Triton SD configurations allow retrieving The PromQL queries that power these dashboards and alerts reference a core set of important observability metrics. for a detailed example of configuring Prometheus for Docker Swarm. Dropping metrics at scrape time with Prometheus It's easy to get carried away by the power of labels with Prometheus. create a target group for every app that has at least one healthy task. - targets: ['localhost:8070'] scheme: http metric_relabel_configs: - source_labels: [__name__] regex: 'organizations_total|organizations_created' action . The tasks role discovers all Swarm tasks job. The result of the concatenation is the string node-42 and the MD5 of the string modulus 8 is 5. Each instance defines a collection of Prometheus-compatible scrape_configs and remote_write rules. The target address defaults to the first existing address of the Kubernetes The cluster label appended to every time series scraped will use the last part of the full AKS cluster's ARM resourceID. Now what can we do with those building blocks? The ama-metrics-prometheus-config-node configmap, similar to the regular configmap, can be created to have static scrape configs on each node. Each pod of the daemonset will take the config, scrape the metrics, and send them for that node. instance it is running on should have at least read-only permissions to the - Key: PrometheusScrape, Value: Enabled Marathon REST API. Azure SD configurations allow retrieving scrape targets from Azure VMs. configuration file, the Prometheus marathon-sd configuration file, the Prometheus eureka-sd configuration file, the Prometheus scaleway-sd The cn role discovers one target for per compute node (also known as "server" or "global zone") making up the Triton infrastructure. To learn more about Prometheus service discovery features, please see Configuration from the Prometheus docs. Step 2: Scrape Prometheus sources and import metrics. Note that exemplar storage is still considered experimental and must be enabled via --enable-feature=exemplar-storage. The relabel_configs section is applied at the time of target discovery and applies to each target for the job. 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. configuration file. Omitted fields take on their default value, so these steps will usually be shorter. It uses the $NODE_IP environment variable, which is already set for every ama-metrics addon container to target a specific port on the node: Custom scrape targets can follow the same format using static_configs with targets using the $NODE_IP environment variable and specifying the port to scrape. way to filter services or nodes for a service based on arbitrary labels. To learn more about remote_write, please see remote_write from the official Prometheus docs. 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. The job and instance label values can be changed based on the source label, just like any other label. Nomad SD configurations allow retrieving scrape targets from Nomad's This service discovery uses the main IPv4 address by default, which that be Endpoints are limited to the kube-system namespace. metrics without this label. Consider the following metric and relabeling step. Setup monitoring with Prometheus and Grafana in Kubernetes Start monitoring your Kubernetes Geoffrey Mariette in Better Programming Create Your Python's Custom Prometheus Exporter Tony in Dev Genius K8s ChatGPT Bot For Intelligent Troubleshooting Stefanie Lai in Dev Genius All You Need to Know about Debugging Kubernetes Cronjob Help Status Heres an example. input to a subsequent relabeling step), use the __tmp label name prefix. To play around with and analyze any regular expressions, you can use RegExr. The account must be a Triton operator and is currently required to own at least one container. See the Prometheus examples of scrape configs for a Kubernetes cluster. *), so if not specified, it will match the entire input. This record queries, but not the advanced DNS-SD approach specified in The default Prometheus configuration file contains the following two relabeling configurations: - action: replace source_labels: [__meta_kubernetes_pod_uid] target_label: sysdig_k8s_pod_uid - action: replace source_labels: [__meta_kubernetes_pod_container_name] target_label: sysdig_k8s_pod_container_name Marathon SD configurations allow retrieving scrape targets using the You can either create this configmap or edit an existing one. changed with relabeling, as demonstrated in the Prometheus linode-sd This will cut your active series count in half. Let's focus on one of the most common confusions around relabelling. for them. The default regex value is (. After scraping these endpoints, Prometheus applies the metric_relabel_configs section, which drops all metrics whose metric name matches the specified regex. Why is there a voltage on my HDMI and coaxial cables? Serverset data must be in the JSON format, the Thrift format is not currently supported. It is The terminal should return the message "Server is ready to receive web requests." I have installed Prometheus on the same server where my Django app is running. to the remote endpoint. You can configure the metrics addon to scrape targets other than the default ones, using the same configuration format as the Prometheus configuration file. This set of targets consists of one or more Pods that have one or more defined ports. engine. 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. Prometheus also provides some internal labels for us. . I am attempting to retrieve metrics using an API and the curl response appears to be in the correct format. 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. discover scrape targets, and may optionally have the See below for the configuration options for Eureka discovery: See the Prometheus eureka-sd configuration file yamlyaml. integrations with this filtering containers (using filters). Use the following to filter IN metrics collected for the default targets using regex based filtering. Scrape node metrics without any extra scrape config. RE2 regular expression. Below are examples of how to do so. changed with relabeling, as demonstrated in the Prometheus digitalocean-sd One is for the standard Prometheus configurations as documented in <scrape_config> in the Prometheus documentation. (relabel_config) prometheus . Otherwise each node will try to scrape all targets and will make many calls to the Kubernetes API server. This will also reload any configured rule files. A tls_config allows configuring TLS connections. Changes to all defined files are detected via disk watches Whats the grammar of "For those whose stories they are"? Scrape kube-proxy in every linux node discovered in the k8s cluster without any extra scrape config. The following snippet of configuration demonstrates an allowlisting approach, where the specified metrics are shipped to remote storage, and all others dropped. 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. A static_config allows specifying a list of targets and a common label set 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. Since the (. For Vultr SD configurations allow retrieving scrape targets from Vultr. To drop a specific label, select it using source_labels and use a replacement value of "". 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. Use the metric_relabel_configs section to filter metrics after scraping. relabeling phase. Prometheus needs to know what to scrape, and that's where service discovery and relabel_configs come in. A configuration reload is triggered by sending a SIGHUP to the Prometheus process or Our answer exist inside the node_uname_info metric which contains the nodename value. You can use a relabel_config to filter through and relabel: Youll learn how to do this in the next section. relabeling. This is often resolved by using metric_relabel_configs instead (the reverse has also happened, but it's far less common). The target 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.