prometheus replace job label

The primary data structure for dealing with time series data is the sample, defined as: The metric name of the sample is encoded in a special __name__ label in the Labelsmap. scrape_configs: # The job name is added as a label `job=` to any timeseries scraped from this config. Above will create a Recording Rule job:availability:999 which will have no labels and will always yield 0.001. Now, we have to configure a Prometheus scrapping job to scrape the metrics using this service. To drop a specific label, select it using source_labels and use a replacement value of "". You cannot chain multiple relabel rules, such as renaming one label and then modifying that result. To rewrite the above example: By leading with action it is crystal clear what is happening. To bulk drop or keep labels, use the labelkeep and labeldrop actions. FreshTracks.io is building better monitoring tools so you can spend more time where it matters. Medium is an open platform where 170 million readers come to find insightful and dynamic thinking. Existing label can be updated with the relabeling rule mentioned above: I am going to manually install the latest version of the SNMP Exporter. Having the ability to combine Prometheus and Consul to allow discovery of monitoring endpoints is wonderful, but it can come with some pain points. It’s easy and free to post your thinking on any topic. prometheus: front-end-team) for a particular Prometheus (e.g. Explore, If you have a story to tell, knowledge to share, or a perspective to offer — welcome home. Depending on how Consul is setup and the information passed from your applications, Prometheus may display endpoints that will never have any metrics emitted. Prometheus detects endpoints with metrics by the Kubernetes Service app label and a HTTP port name. It … This pattern is only used for certain e… Prometheus Pushgateway: push metrics to Prometheus Pushgateway (then metrics are collected from Pushgateway by Promtehus “pull”) with any kind of scripts as long as their outputs are in line with the required format. As it states in the docs: After reading the code (trying to find labelmap) it occurred to me that action is really the star of the show. Rename the label name using the target_label to set the name of the final label that we’re going to create based on the source_labels. It will be much easier to do that than manage multiple chained rules in the future. What is the correct fix here? Install the SNMP Exporter Video Lecture. Having the ability to combine Prometheus and Consul to allow discovery of monitoring endpoints is wonderful, but it can come with some pain points. Change this to GET if you have a Prometheus version older than 2.1 or if POST requests are restricted in your network. This example also highlights renaming the target to something easier to view in the targets list, which we’ll want ‘apache-httpd2’. labeldrop: Match regex against all label names. 2. the exporter does not have to run on the machine the metrics are taken from. keep: Drop targets for which regex does not match the concatenated source_labels. If it matches, then the timeseries is returned with the label dst_label replaced by the expansion of replacement. Configure Prometheus Server. Then, set target_label to replacement, with match group references (${1}, ${2}, ...) in replacement substituted by their value. By multi-target exporterpattern we refer to a specific design, in which: 1. the exporter will get the target’s metrics via a network protocol. In Prometheus the instance label uniquely identifies a target within a job. * Prometheus - Relabel Config. For more information, refer to Prometheus Pushgateway; This creates a lot of cruft in the targets view, making it look like there is more wrong than right. Refresh or open a new browser window to confirm that Prometheus is still running. For example, metric{job="aa"} will be converted to metric{job="aa",foo="bar"}. label_replace() For each timeseries in v, label_replace(v instant-vector, dst_label string, replacement string, src_label string, regex string) matches the regular expression regex against the label src_label. Through creating a new job_name, you will be able to specifically target all operations that have to occur in that single job. replace: Match regex against the concatenated source_labels. It is recommended to be used for ephemeral and batch jobs. Summary metrics about cluster health, deployments, statefulsets, nodes, pods, containers running on Kubernetes nodes scraped by prometheus.Dashboard was taken from here.This version does not reqiure you to setup the Kubernetes-app plugin. In a number of posts on this site I have covered Prometheus and some of the service discovery methods, including: - Consul DNS SRV Records AWS, Azure and Google Cloud Platform Digital Ocean OpenStack In the next release of Prometheus (v2.21 at the time of writing) Prometheus will also be able to discover services for Eureka and Hetzner. FreshTracks provides intelligent alerting Kubernetes to…. The global.prometheusUrl field gives you a single place through which all these components can be configured to an external Prometheus URL. It will make it so metrics with names container_tasks_state and container_memory_failures_total are completely dropped and will not be stored in the database. There is an additional definition for dropping consul from the discovered service list, which isn’t required but might be helpful. Relabel configs are composed of the following: Some of these elements have defaults, others are required based on the value of the action element. Here, expert and undiscovered voices alike dive into the heart of any topic and bring new ideas to the surface. Any label that does not match will be removed from the set of labels. Then the prometheus configure like this: - job_name: monitoring/foundation-prometheus/0 honor_labels: true params: match[]: - '{__name__=~".+"}' scrape_interval: 30s scrape_timeout: 10s metrics_path: /federate scheme: http kubernetes_sd_configs: - api_server: null role: endpoints namespaces: names: - monitoring relabel_configs: - source_labels: [__meta_kubernetes_service_label_cluster] separator: ; regex: foundation replacement: $1 action: keep - source_labels… It is also a part of CNCF. It is also important here to understand the role field, since it defines the behavior of a scraping job. List of changes divided into commits: Set lower resource requests by default (simply for demo purposes, as this currently won't work on minikube for example with only 1Gb of memory) Remove unnecessary prometheus.io/scrape annotation: (tl;dr) more confusing then helpful Add Alertmanager support in TPRs and manifests themselves (recently added to Prometheus Operator) Add kube-dns … There are many different actions available to the relabel configs (lifted from the docs): From a neophyte’s perspective perhaps all the examples for replace relabel rules should start with action, even if it’s redundant. 5. the exporter can query multiple targets. Because Spring Boot and RabbitMQ metrics are defined under different endpoints, we need to define two jobs. When detected, this job will create a new list of nodes and use the default node-exporter port of 9100. Now to manually install the SNMP Exporter. The Prometheus object model is very flexible and abstract; it consists of a set of time series, identified by a unique set of label-value pairs, with an associated series of timestamped values. Control Plane Components Configuration. If regex does not match, no replacement takes place. This is allowed both through the CLI and Helm. This helps to reduce disk space usage dramatically. Your goal is to simply replace the old label name “old_job_id” with a new label name “new_task_id”. 5. The regex supplied in relabel_config uses the Go implementation of regex and can only be used for a single relabel operation at a time. prometheus.io/path: /metrics prometheus.io/port: 56790 prometheus.io/scrape: true The Prometheus server will discover the service endpoint using these specifications and will scrape metrics from the exporter. Depending on how Consul is setup and the information passed from your applications, Prometheus may display endpoints that will never have any metrics emitted. Terminate the command you used to start Prometheus, and use the following command that includes the use of the local prometheus.yml file: docker run --rm -it -p 9090:9090 -v $(pwd)prometheus.yml:/etc/prometheus/prometheus.yml prom/prometheus. rbac:: create: true: podSecurityPolicy:: enabled: false: imagePullSecrets: # - name: "image-pull-secret" # # Define serviceAccount names for components. interface{}in Go is similar to a void pointer in C. labelkeep: Match regex against all label names. Relabeling rules used to drop or keep specific metrics allow you to hide what you don’t want, keeping the interface and metrics system manageable. Labels Prometheus and Kubernetes share the same label (key-value) concept that can be used to select objects in the system. Early on in Prometheus's life, the "job" label started as a convention to group instances of the same type (same binary and configuration, replicated for scalability and redundancy) together. This section is what will allow us to add additional jobs to scrape from. The "job" was meant to be the label within which all metrics would have the same meaning, as … AFAICT there is no way inside of prometheus to align those two sets of labels in either the job label replace context or the query language because it lacks the ability to do a global regex replace on a label. You can use a relabel_config to filter through and relabel: Scrape targets; Samples and labels to ingest into Prometheus storage; Samples and labels to ship to remote storage Any label that matches will be removed from the set of labels. Today I want to talk about learning about the action parameter in the relabel_config and metric_relabel_config elements in Prometheus. Some of these labels are more equal than others – the job label and the instance label … Then copy the values of the matching labels to label names given by replacement with match group references (${1}, ${2}, …) in replacement substituted by their value. - job_name: 'prometheus' # metrics_path defaults to '/metrics' # scheme defaults to 'http'. `prometheus-additional.yaml`# To update additional settings create a Secret custom resource by using a command below # kubectl create secret generic additional-scrape-configs --from-file=prometheus-additional.yaml - job_name: "kubernetes-cadvisor" honor_labels: true scrape_interval: 10s scrape_timeout: 10s metrics_path: /metrics scheme: https kubernetes_sd_configs: - role: node … 3. the exporter gets the targets and a query config string as parameters of Prometheus’ GET request. []samplemeans a list of samples. Then in your Prometheus CRD you would write: This rule example highlights how we can take a label name and create a service-to-job result. I mean, this isn’t Nagios… right? Write on Medium, externalTrafficPolicy=local on Kubernetes, K8s Monitor Pod CPU and memory usage with Prometheus, Breaking Changes in Helm 3 (and How to Fix Them), Fix a random network Connection Reset issue in Docker/Kubernetes, Create ReadWriteMany PersistentVolumeClaims on your Kubernetes Cluster, The basics of deploying Logstash pipelines to Kubernetes, Simple Management of Prometheus Monitoring Pipeline with the Prometheus Operator. This was an epiphany I had when searching for how to dig substrings out the __meta_* label names as returned from service discovery (hint, use action: labelmap). Learn more, Follow the writers, publications, and topics that matter to you, and you’ll see them on your homepage and in your inbox. Prometheus service is installed by default, service address: 192.168.56.200 I. obtain snmp information of the switch snmp service IP (switch IP): 172.20.2.83 snmp community: dfetest II. New label can be added with the following relabeling rule: - target_label: "foo" replacement: "bar" This relabeling rule adds {foo="bar"} label to all the incoming metrics. the front-end-team Prometheus). Replace the value using the regex parameter to define the regular expression for the original value and the replacement parameter that is going to express the changes that we want to do to this value. Linkerd’s control plane components like public-api, etc depend on the Prometheus instance to power the dashboard and CLI.. Prometheus offers a multidimensional approach to identifying metrics with key-value pairs called labels. It’s easily fixed with the Prometheus relabel_config directives that are part of the Prometheus configuration. Originally published at freshtracks.io on July 20, 2017. Since then, it has become an active, standalone FOSS project, with active community participation. Prometheus is a pull-based monitoring system, which means that the Prometheus server dynamically discovers and pulls metrics from your services running in Kubernetes. Description. Technologist, father, fly fisherman, and brewer of tasty malty, often hoppy beverages. relabel_config allows you to change any labels discovered by Consul and specify target labels – like __address__ – and add correct information. __name__is a reserved word for a metric name. If you feel that making multiple chained relabeling is the only true way, then you are in for a big surprise: create a new job_name directive in your configuration. FreshTracks provides intelligent alerting Kubernetes to monitor containers and improve system availability and stability. The obvious ones: To rewrite the haproxy exporter to munge the names in a configurable fashion Prometheus was developed at SoundCloud initially and it borrowed a few ideas from Borgmon. Supporting documents: Prometheus self discovery is based on Kubernetes labels and annotations explained here. static_configs: - targets: ['localhost:9090'] 3. This creates a lot of cruft in the targets view, making it look like there is more … Updating existing label. If you need to have all detected hosts have the same port, relabel everything in that job and drop what doesn’t match. Any of the hosts in Consul and detected by Prometheus should have node-exporter running. Disable metrics lookup: Checking this option will disable the metrics chooser and metric/label support in the query field’s autocomplete. 4. the exporter subsequently starts the scrape after getting Prometheus’ GET requests and once it is done with scraping. This allows a great deal of granularity on choosing the applications to be scraped. POST is the recommended and pre-selected method as it allows bigger queries. Depending on how many services we have detected, we might want to create a per-service target group instead of lumping ALL services into individual jobs. So, when you’ll decide to cover a multitude of availabilities, you’ll end-up having job:availability:99, job:availability:95 and similar as well as to change between them when availability target changes.. While chaining result modification seems like it would be ideal, really it would complicate matters. Note that we have to make the regex for the address source label to match the endpoint and port number from which our sample application is exposing the metrics: As Prometheus fetches the tasks labels, we can instruct it to only keep the targets which have a prometheus-job label. This is an example of targeting a specific consul tag – apache – and associating a specific port to check for metrics. Of course, you can define different search criteria for that. Prometheus label_replace will really “add” the new label name. I would suggest adding a label to each namespace that you want to scan for ServiceMonitors (e.g. Join our beta and start exploring today. It may be a DNS name but commonly it's just a host and port such as 10.3.5.2:9100.. That could be fine, but sometimes you'd like a more meaningful value on your graphs and dashboards. When first learning about relabel configs in Prometheus you will encounter many examples that looks something like this: Every example I’ve found the stanza starts with source_labels as the first entry in the list of elements. In prometheus.yaml you will find the following section, instructing the CloudWatch agent about the Prometheus metric endpoint details, using the standard Prometheus configuration.