Prometheus instance label example. This guide will show you how to deploy the Prometheus operator, set up a Prometheus instance, and configure metrics collection for a sample application. There is a label in common between the two metrics “node_meta” and “node_disk_bytes_read”: instance. Simulating Dynamic EC2 Environment Oct 8, 2018 · All counter entities are unique, so they get values of 1. Data Structures. This is also a easy way to differentiate from the Feb 7, 2017 · The instance label is what Prometheus uses to scrape metrics from the targets HTTP server, as kubernetes Endpoints are filled with Pod IPs rather than the nodes IPs this is not possible via the instance label. 👉. The Prometheus Operator's goal is to make running Prometheus on top of Kubernetes as easy as possible, while preserving Kubernetes-native configuration options. metric_relabel_configs says "One use for this is to blacklist May 10, 2023 · How to use federation to collect Prometheus' metrics from multiple Prometheus instances (each using instance="localhost:9090") 0 Sorted by: Reset to default Oct 7, 2021 · You can use metric_relabel_configs to rewrite labels after scraping. Prometheus allows you to have same alertname for different alerting rules. 11 value stored in the index label and Oct 12, 2023 · scrape_configs: - job_name: pushgateway honor_labels: false static_configs: - targets: ['localhost:9091'] labels: pushgateway_instance: metricfire . Having it Mar 4, 2024 · Figure 4: Visualizing Prometheus metrics of dynamically scrapped targets. test=2. Template examples. Can you allow the ability to overide the instance label? This should give users the ability to push a single metric name, for many instances. For example, suppose Prometheus contains the following time series: If instance label is removed, then these two time series will become identical: Now neither Prometheus nor user can differentiate Template examples. This multiple may also be a fraction. The GET request contains a X-Prometheus-Refresh-Interval-Seconds HTTP header with the refresh interval. Templates have the ability to run queries against the local database, iterate over data, use conditionals, format data, etc. The rule blocks are applied to the label set of each metric in order of their appearance in the configuration file. In the previous post, we set up the Prometheus server to collect metrics from a web application. Prometheus Operator already does an awesome "automagic" with relabeling, but lack of ability to make any customization — is it good or bad? For now, Prometheus Operator adds following labels automatically: endpoint, instance, namespace, pod, and service. This is to mimic the default behavior of node Prometheus Pushgateway. Individual organizations may want to approach some of these practices, e. job - a name of a logical group of instances sharing the same purpose. 8) and an instance name (node2). Example scrape_configs: # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config. In your example this should result in something like this: The Prometheus templating language is based on the Go templating system. Additionally, you can visualize Prometheus metrics for individual EC2 instance targets by utilizing the instance_id label, as shown in Figure 5. In this guide, you created two sample Go applications that expose metrics to Prometheus---one that exposes only the default Go metrics and one that also exposes a custom Prometheus counter---and configured a Prometheus instance to scrape metrics from those applications. 03. Here’s a sample alertmanager. sample-y. read-sample-limit: Maximum overall number of samples to return via the remote read interface, in a single query. yml file. 1. 0, Prometheus v2. It may be a DNS name but commonly it's just a host and port such as 10. May 2, 2022 · In this example, the custom labels “service” & “application” are using the value of the system generated label “app”. Once we have the right metric coordinates captured, it’s time to create our first Prometheus Grafana dashboard. 1m--storage. The Prometheus Pushgateway exists to allow ephemeral and batch jobs to expose their metrics to Prometheus. server 2: metric. The best way around this is to avoid using any of the special labels in the exporter. Querying exemplars. 0 means no limit. yml # A scrape configuration containing exactly one endpoint to scrape: # Here it's Prometheus itself. Apr 17, 2023 · Prometheus is a robust monitoring and alerting system widely used in cloud-native and Kubernetes environments. =~: Select labels that regex-match the provided string. scrape_configs: # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config. Hence in this unit testing, you have to list the union of all the firing alerts for the alertname under a single <alert_test_case>. 27. Alerting configuration Happy learning Prometheus & stay tuned for more articles on the same topic. jksdjkfs-2f16-11e7-3454-005056bf2fbf. Figure 5: Visualizing Prometheus metrics of specific scrapped target. Aug 3, 2021 · I have run two instances of my project on my local system. com. Mar 3, 2016 · The documentation for relabel_config is very clinical and hard to understand. slack_api_url: 'add slack webhook url'. relabel is to filter Prometheus metrics or standardize the label set that is passed to one or more downstream receivers. Prometheus supports templating in the annotations and labels of alerts, as well as in served console pages. Label. global: scrape_interval: 15s # Set the scrape interval to every 15 seconds. The response is consumed as is, unmodified. yml For example, a setup might consist of many per-datacenter Prometheus servers that collect data in high detail (instance-level drill-down), and a set of global Prometheus servers which collect and store only aggregated data (job-level drill-down) from those local servers. Create a Prometheus Grafana Dashboard. One of the critical features of Prometheus is its ability to create and trigger alerts based on metrics it collects from various sources. yml' scrape_configs: - job_name: 'prometheus' # Override the global default and scrape targets from this job every 5 seconds. Additionally, you can analyze and filter the metrics to develop: Jun 9, 2017 · It is a good practice in Prometheus ecosystem to expose additional labels, which can be joined to multiple metrics, via a separate info -like metric as explained in this article. Use with server mode only. Dec 16, 2023 · It is also possible to negatively match a label value, or to match label values against regular expressions. Metric names. eval_time: <duration> # Name of the alert to be tested. You won’t have access to do this on Play, but you could follow along on your instance of Grafana. Then you'll get all the labels that are available on metric_name metric. The following label matching operators exist: =: Select labels that are exactly equal to the provided string. Querying Prometheus. This provides an aggregate global view and detailed local views. Conclusion Labels are metadata or attributes, and there are a few sources of metric labels. Just execute your alerting query directly in prometheus (making sure query does return something - remove any threshold etc. read-concurrent-limit Sep 27, 2021 · nhatfield. Relabel Prometheus metrics to reduce usage. The good news is there's a way to do with without polluting your target labels with Feb 15, 2024 · Hey, I am Akash Bhujbal, I am an aspiring DevOps and Cloud enthusiast who is eager to embark on a journey into the world of DevOps and Cloud. Example: - action: hashmod source_labels: [instance] target_label: instance_hash modulus: 100 This would take the instance label's value, apply a hash function, and take the result modulo 100, storing it in instance_hash. To implement this feature, modify the configuration file /etc/kolla/globals. When querying the DNS-SRV records, a label named __meta_dns_name is attached to each target. Name of the Prometheus instance that scraped the metric. Apr 10, 2024 · None: Instance labels will be IP addresses (default) {{ansible_facts. Mar 27, 2020 · Prometheus label_replace will really “add” the new label name. alertname Enable Prometheus's dimensional data model to identify any given combination of labels for the same metric name. remote. Base units. Templates have the ability to run queries against the local database The name of that label is given by the aggregation parameter, and the label value is the unique sample value. (At least it is accurate, as far as I can tell. Nov 5, 2019 · # Attach these extra labels to all timeseries collected by this Prometheus instance. if I run the same "dataflow" (one of my APIs which generates these metrics). The metric and label conventions presented in this document are not required for using Prometheus, but can serve as both a style-guide and a collection of best practices. For example, in Prometheus’s configuration file: Mar 11, 2018 · It is possible to use label_replace() function in order to extract the needed parts of the label into a separate label and then group by this label when summing the results. Feb 6, 2020 · 15. Prometheus provides a functional query language called PromQL (Prometheus Query Language) that lets the user select and aggregate time series data in real time. Mar 14, 2023 · It merely adds a leading _ (indicating that this manually set) and a dummy :0 port to be removed again later. PromQL supports the ability to join two metrics together: You can append a label set from one metric and append it to another at query time. I will then create a new panel, and title it “Extract Prometheus Labels. scrape_configs: Prometheus Operator v0. Simple iteration. static_configs: - targets: - server1. This configuration file specifies how Alertmanager should handle alerts and where to send them. The optional to_nearest argument allows specifying the nearest multiple to which the sample values should be rounded. The join is usually performed via on round(v instant-vector, to_nearest=1 scalar) rounds the sample values of all elements in v to the nearest integer. The most common use of prometheus. The result of an expression can either be shown as a graph, viewed as tabular data in Prometheus's expression browser, or consumed by external systems via the HTTP API. – A labelkeep relabeling rule has the following structure: action: labelkeep. 5e7--storage. 5. yml: # my global config. The configuration file consists of two key sections for alert manager and templating. Advanced iteration. It identifies a particular dimensional instantiation of that metric (for example: all HTTP requests that used the method POST to the /api/tracks handler). - server3. Before applying these techniques, ensure that you’re deduplicating any samples sent from high-availability Prometheus clusters. *)' (matching any value) The labelkeep action performs the following steps, in sequence: It matches the regular expression in regex against all label names. 6. count(app_version_updated) by (version) If you implement an HTTP SD endpoint, here are a few requirements you should be aware of. Mar 7, 2022 · In other words, exported_instance is the instance label in your exporter. Mar 9, 2020 · I'm mostly concerned about the tags - every instance contains a lot of them and I would love to gather them all using one simple configuration entry with the usage of regular expression. 1. Use the __replica__ label to identify each replica in the group separately. Grafana lists these variables in dropdown select boxes at the top of the dashboard to help you change the data displayed in your dashboard. Ties are resolved by rounding up. From what I saw the solution is something around relabel_configs but I'm Feb 21, 2020 · You can notice that here we have labels allowing us to have a match between an instance IP address (10. Aug 28, 2020 · then you will only have label_foo available. 0. What is scraping? Prometheus is configured via command-line flags and a configuration file. # The time elapsed from time=0s when the alerts have to be checked. Finally, assuming the same alert as the previous example, we customize our receiver to range over all of the alerts received from the Alertmanager, printing their respective annotation summaries and descriptions on new lines. The primary data structure for dealing with time series data is the sample, defined as: type sample struct { Labels map[string]string Value interface{} } The metric name of the sample is encoded in a special __name__ label in the Labels map. prometheus. An example: - job_name: pushgateway # This is necessary if metrics in pushgateway have "job" or "instance" labels. because they are coming from two different instances. As Thanos aims to aggregate data across all instances, providing a consistent set of external labels becomes crucial! Every Prometheus instance must have a globally unique set of identifying labels. I'm monitoring multiple computers in the same cluster, for that I'm using prometheus. Jul 22, 2016 · The version is reported as a label in the app_version_updated (say) metric like so: app_version_updated{instance="eu99",version="1. This is just an example: there are other ways to configure prometheus scrape targets and label rewrite rules. but now I would like to label the instances with additional static labels, like the server1 and server2 with "database" and server3 with "mail" and maybe server1 additionally Apr 30, 2021 · Your labels are coming from different sources, and are therefore using different label names for roughly the same concept. Conclusion and next steps Jun 7, 2023 · Additionally, for the Rules, we added the ruleSelector to match a label that we defined on the Prometheus Rules, as we have in the example bellow. If you do: metric_name. This limit is ignored for streamed response types. endpoint - name of an HTTP API endpoint. Oct 19, 2023 · According to examples in Prometheus' documentation you should use printf to prepare query if it uses labels of your current alert, and feed result into query using pipe. In this case we can see the __meta_consul_node value of lb1 was used to set instance to lb1. !=: Select labels that are not equal to the provided string. 2. POST /api/v1/query_exemplars. If for some reason it is mandatory to use one of these labels, you can perform relabeling at the metric_relabel_configs: metric_relabel_configs: # copy exported_instance value to label foo. ”. This will make your Prometheus scrape a Pushgateway instance at localhost:9091 if you are running a Pushgateway locally. Share. Aug 28, 2019 · Prometheus relabel configs are notoriously badly documented, so here’s how to do something simple that I couldn’t find documented anywhere: How to add a label to all metrics coming from a specific scrape target. Jun 9, 2017 · It is a good practice in Prometheus ecosystem to expose additional labels, which can be joined to multiple metrics, via a separate info -like metric as explained in this article. Example: Dozens or hundreds of instances of a service are running in your cluster when a network partition occurs. This will cut your active series count in half. The avg_over_time function expects a range vector, which means that you could (if I understood correctly) use subquery like: avg_over_time(K_utilization[1h:5m]) This will look at the K_utilization metric for the last 1h at a 5m resolution, the result should contain all labels from the metric. Remember, changing this variable . topk and bottomk are different from other aggregators in that a subset of the input samples, including the original labels, are returned in the result Aug 15, 2016 · In Prometheus the instance label uniquely identifies a target within a job. Another thing to consider is enabling the honor_labels parameter. Apr 12, 2016 · We have multiple Prometheus instances running in data-centers (I'll refer to them as DC Prometheus instances), and one additional Prometheus instance (let's call it "main" in the following text), where we collect metrics from DC Prometheus instances by using Federation feature. g. The second rule is only to bring in the __address__ and only matches if there is a leading ; (which is only the case if instance is empty - if not, there would be a leading _ from the first rule). Using console URL parameters. Defining reusable templates. I tried this solution that Brian Brazil shows, but no luck. Grafana refers to such variables as template variables. You need to apply both __replica__ and cluster labels for de-duplication to work. For example, the following query extracts the project. May 31, 2020 · This shows the original labels before relabelling. yml file: global: resolve_timeout: 1m. hostname}}: Instance labels will be hostnames {{ansible_facts. Prometheus target missing with warmup time Allow a job time to start up (10 minutes) before alerting that it's down. rules. +' TLS based scraping If you have a Prometheus instance served with TLS and you want to scrape metrics from it, you need to set scheme to https and set the TLS settings in your configmap or respective CRD. naming conventions, differently. on Sep 12, 2021. yml and update the prometheus_instance_label variable accordingly. Note that this requires one to add an appropriate and unique instance label to each node_exporter target. and my Prometheus server is scraping values from both instances. The Prometheus Operator’s goal is to make running Prometheus on top of Kubernetes as easy as possible, while preserving Kubernetes-native configuration options. Apr 4, 2017 · 1. On each refresh interval (default: 1 minute), Prometheus will perform a GET request to the HTTP SD endpoint. Prometheus drops all labels that begin with __, thus leaving our final two labels, instance=lb1. Click the Grafana Logo to get the side toolbar, and then click “+” followed by “Dashboard”: Jun 1, 2015 · Prometheus 0. This is one occasion where label_replace is very handy! There is a different approach for getting CPU count which is quite common. 0-abcdefg"} I've tried a number of Prometheus queries to extract the version label as a string from the latest member of this time series, to no effect. Labels. 4. to allow prometheus to map both servers using the same metric name. The following endpoint returns a list of exemplars for a valid PromQL query for a specific time range: GET /api/v1/query_exemplars. It keeps only those labels that match. It is a powerful functional expression language, which lets you filter with Prometheus’ multi-dimensional time-series labels. you can see Dataflow-Product-1 has two 1. test=1. Problem. In this example we again customize the text sent to our Slack receiver accessing the summary and description stored in the CommonAnnotations of the data sent by the Alertmanager. sample-y from project. Instead of hard-coding details such as server, application, and sensor names in metric queries, you can use variables. Jul 11, 2023 · Prometheus already attaches the job and instance labels whenever it scrapes a service for metrics. Prometheus Relabling. Prometheus doesn't provide the ability to delete particular labels, because this may result to duplicate time series with identical labelsets. The Prometheus server will attach a job label and an instance label to each scraped metric. method - HTTP method. That could be fine, but sometimes you'd like a more meaningful value on your graphs and dashboards. I saw this two one , two questions that are about the same problem, but no luck. Simple alert field templates. Discovered labels The Prometheus Documentation contains the full list of labels, but here are other relabel configs that you might find useful. If counter labels are always unique (come from different machines), rate (mycounter [5m]) would get values of 0 in this case, and sum (rate (mycounter [5m])) would get 0, which is not what I need! I want to ignore the instance label so that it would refer these mycounter inc operations This example shows a single node configuration running ceph-mgr and node_exporter on a server called senta04. Using a standard prometheus config to scrape two targets: ip-192-168-64-29. Aug 4, 2021 · Joins in PromQL. The query language allows filtering and aggregation based on these dimensions. When you install it in Kubernetes, it's the name of the pod. metrics_path: '/actuator/prometheus'. 3. Mar 12, 2019 · scrape_interval: 5s. read-concurrent-limit Apr 25, 2017 · Is there a way to use metric_relabel_configs or a recording rule to calculate the hostname and then place it into the instance label? I'm wondering this because I have my prometheus setup to scrape localhost for prometheus metrics but it would be nice if localhost was replaced with an actual host name. Oct 19, 2017 · For example: Consider a Prometheus 1. from both the instance then it creates two graphs. May 30, 2022 · 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. Description. To integrate Alertmanager into your Prometheus setup, you need to create an alertmanager. For example: server 1: metric. status_code - HTTP status code. Display one value. Jul 31, 2023 · Prometheus Querying – Breaking Down PromQL. You can use a query like this: count by (instance) (node_cpu_seconds_total{mode="idle"}) Jan 8, 2024 · Configuring Alertmanager. Alert groups: - name: Instances rules: - alert: InstanceDown expr: up == 0 for: 5m labels: severity: page # Prometheus templates apply here in the annotation and label Metric and label naming. QUESTION? How to query prometheus to have sum of “disk bytes read” by instance/node/server Jul 22, 2016 · The version is reported as a label in the app_version_updated (say) metric like so: app_version_updated{instance="eu99",version="1. Alerting rules in Prometheus were configured to send an alert for each service instance if it cannot communicate with the database. This can be useful in Prometheus rule evaluations, since it lets you generate a new metric for a series by appending labels from another info metric. multipass:9100. static_configs: - targets: ['272. prometheus_server. The value of each time series is the number of times that sample value was present. Under Data source, I’ll choose the How long to wait flushing sample on shutdown or config reload. Default is every 1 minute. That last part takes the label prometheus-job of the task and turns it into a target label, overwriting the default dockerswarm job label that comes from the scrape config. Assuming that the http_requests_total time series all have the labels job (fanout by job name) and instance (fanout by instance of the job), we might want to sum over the rate of all instances, so we get fewer output time series, but still preserve the job dimension: Getting Started. Jan 22, 2019 · Here are some examples of a Prometheus Grafana dashboard. example. It will preserve the old label name as well… So, that could be a problem, it’s not a true “replace in place”. 2:9100. Use the cluster label to identify a Prometheus instance agent as part of a high availability group. Before we start with our deep dive into relabeling metrics, let's first recap how labels work in Prometheus. This guide describes several techniques you can use to reduce your Prometheus metrics usage on Grafana Cloud. When you configure the Pushgateway as a scrape target for your Prometheus server, you will probably pick a job name like pushgateway. Jul 14, 2021 · Remember to check the names of your jobs, since each have their own labels that you’ll be able to use in Prometheus Query Language (PromQL) queries: For our examples, we'll use the instance as a unique label that will indicate the source of the metrics. regex: <regular expression> # Defaults to '(. x instance that is entering "rushed mode" periodically. Then, we'll use the cluster label to group the jobs together. The Pushgateway then exposes these metrics to Prometheus. The Prometheus templating language is based on the Go templating system. These are meant to globally identify the role of that instance. You could also aggregate the metric in the Apr 1, 2018 · Prometheus Operator v0. The default is every 1 minute. The first thing I’ll do is go to the Dashboards area of Grafana and create a new dashboard. Jul 24, 2021 · Typical examples of labels are: instance - an instance (a server or cronjob process) of a job being monitored in the <host>:<port> form. 0 allows you to specify multiple SRV records to be queried in a single scrape configuration, and also provides service-discovery-specific meta information that is helpful during the relabeling phase. By mastering the basics covered in this cheat sheet, you'll be well-equipped to explore and analyze your monitoring data effectively. 41. This is experimental and might change in the future. Half of your service instances can no longer reach the database. Feb 9, 2024 · Step#2:Adding node exporter to prometheus. nodename}}: Instance labels will FQDNs. In the following tables, see the sources of labels and when they are added: All targets. It leaves the leading ; so that in both May 16, 2022 · If you want to drop a label with a particular value from the collected metric, then use the following relabeling rule at metric_relabel_configs section of the needed scrape_config: This relabeling rule substitutes the exported_namespace="test" label with exported_namespace="" label, which, in turn, is automatically removed by Prometheus, since The Amazon Managed Service for Prometheus Alert Manager uses a configuration file in YAML format to set up the alerts (for the receiving service) that is in the same structure as an alert manager config file in standalone Prometheus. 2018. yml configuration sudo nano prometheus. Remember, this blog post only scratches the surface. Nov 6, 2023 · In this guide, we will explore the powerful feature of Prometheus relabeling, a technique central to refining data collection and enhancing monitoring efforts. (In fact, relabel_configs doesn't even have a paragraph. For example, the query. Feb 23, 2023 · Display metric labels in a table. evaluation_interval: 15s # Evaluate rules every 15 seconds. ), the configuration file defines everything related to scraping jobs and their instances, as well as which rule files to load Nov 6, 2023 · The hashmod action applies a hash function to a label's value and stores the result in the target label. The perfect solution seems to be something like this: relabel_configs: - source_labels: - '__meta_ec2_tag_ (. While the command-line flags configure immutable system parameters (such as storage locations, amount of data to keep on disk and in memory, etc. The join is usually performed via on #1. With a strong passion for technology and a keen interest in DevOps and Cloud based solutions, I am driven to learn and contribute to the ever-evolving field of DevOps and Cloud. # With "honor_labels: true" Prometheus will save those as "exported_job" and "exported_instance" respectively. Example. The value of the job label comes from the scrape configuration. 17. Jun 12, 2020 · How do I configure prometheus (currently using the coreos operator if that matters), to keep only app=foo and drop the label baz, so that I end up with: some_metric{app="foo"} For what it's worth, here's what I currently have and the labels are showing up as is: - action: keep sourceLabels: ["app"] regex: "foo" - action: labeldrop regex: "baz" How long to wait flushing sample on shutdown or config reload. 342:8303'] labels: job: 'test'. external_labels: monitor: 'scalyr-blog' rule_files: - 'prometheus. The result of each expression can be shown either as a graph, viewed as tabular data within This example queries for all label values for the job label: In addition it returns the currently active alerts fired by the Prometheus instance of each alerting Jan 17, 2024 · So in the first step, we would define and trigger an alert on the Prometheus side without handling it by any notifications target. Mar 19, 2024 · # Keep metrics only if `example_label` exists as a label metric_relabel_configs: - source_labels: [example_label_1] action: keep regex: '. Prometheus has its own language specifically dedicated to queries called PromQL. Since these kinds of jobs may not exist long enough to be scraped, they can instead push their metrics to a Pushgateway. For example, consul_service_tags metric exposes a set of tags, which can be joined to metrics via (service_name, node) labels. 14. As long as the service_name is always the same for a specific combination of the job and instance labels, adding this additional label won’t actually add cardinality. count(app_version_updated) by (version) PromQL is a versatile and powerful query language that empowers users to extract valuable insights from Prometheus metrics. ) and you'll see the labels available. Now, we can use the existing Docker Compose file and extend it with some configurations. URL query parameters: query=<string>: Prometheus expression query string. The configured rules can be retrieved by calling the function in the rules Mar 7, 2023 · I'm adding serves to my prometheus config like this: - job_name: cluster1. Here is my config file prometheus. com and job=haproxy. ) In both relabel_configs and metric_relabel_configs some real-world examples would go a long way. ip-192-168-64-30. You'll likely need to check out disk and memory stats on the underlying node, but can't if the only information you have about each running pod is {instance="localhost:9090"} . *)' target_label: '### use extracted regex group Prometheus template variables. - server2. ke nk nz ee xw or bn zo go vn