Prometheus is an open-source tool that’s meant to monitor and collect metrics from applications. The point of this system is to make it easy for users to see and understand important metrics that let them know how well an application is doing.
Why did Zeus hate Prometheus?
Zeus was angered by Prometheus for stealing fire but also being a general trickster. Such as almost tricking Zeus into eating bones at a feast and thus he kept cooked meat from men. Prometheus was not a well-liked Titan and coming out of the Titan wars Zeus must have been wary of Prometheus.
How to deploy Prometheus on Kubernetes?
Install Prometheus Monitoring on Kubernetes Prometheus monitoring can be installed on a Kubernetes cluster by using a set of YAML (Yet Another Markup Language) files. These files contain configurations, permissions, and services that allow Prometheus to access resources and pull information by scraping the elements of your cluster.
How to install and configure Prometheus on Linux?
Setup Prometheus Configuration
- Create prometheus.yml file. Create the prometheus.yml file. ...
- Edit prometheus.yml file. Open the file using vim or any file editor of your liking and copy the following contents to the prometheus.yml file. ...
- Ownership change for prometheus.yml file.
What is Prometheus metrics?
Prometheus is an open-source tool for collecting metrics and sending alerts. It was developed by SoundCloud. It has the following primary components: The core Prometheus app – This is responsible for scraping and storing metrics in an internal time series database, or sending data to a remote storage backend.
What is Prometheus and Grafana used for?
Prometheus is a monitoring solution for storing time series data like metrics. Grafana allows to visualize the data stored in Prometheus (and other sources). This sample demonstrates how to capture NServiceBus metrics, storing these in Prometheus and visualizing these metrics using Grafana.
What are the use cases for Prometheus?
One of the most popular use cases is gathering numeric metrics from a service that runs constantly. As long as the files are published on an HTTP server, you can query Prometheus by using the hostname, path, and port in order for the server to scrape the data you need.
What are the advantages of Prometheus?
Prometheus advantages No extensive set up needed. Allows fast outage discovery. Outages can be very quickly discovered when the system fails to get requests from known monitoring sources. Provides a functional query language, PromQL, that allows us to select and aggregate time-series data in real-time.
Is Prometheus a monitoring tool?
Prometheus is a monitoring solution for recording and processing any purely numeric time-series. It gathers, organizes, and stores metrics along with unique identifiers and timestamps. Prometheus is open-source software that collects metrics from targets by "scraping" metrics HTTP endpoints.
Is Prometheus a database?
Prometheus is an open-source time series database developed by SoundCloud, and serves as the storage layer for the Prometheus monitoring system. Inspired by the Gorilla system at Facebook, Prometheus is specially designed for monitoring and metric collection.
What is Prometheus in Kubernetes?
Prometheus is an open-source monitoring tool that can help you monitor your Kubernetes cluster.
What problem does Prometheus solve?
Prometheus solves the problem of how devs can monitor highly dynamic container environments.
Why is Prometheus popular?
Its popularity is down to its ability to work with custom metrics, support rich queries, and interoperate with other members of the cloud-native ecosystem. Prometheus aims for maximum reliability. It's designed to be your go-to tool during an incident that helps you understand why other components are failing.
What is Thanos software?
Overview. Thanos is a set of components that can be composed into a highly available metric system with unlimited storage capacity, which can be added seamlessly on top of existing Prometheus deployments. Thanos is a CNCF Incubating project.
What Prometheus means?
Meaning of Prometheus in English in Greek mythology (= ancient stories), a demigod (= someone who is part human and part god) who stole fire from Mount Olympus: Prometheus was a Titan, the class of immortals who were around long before Zeus.
How do I monitor API calls with Prometheus?
0:0225:36How to set up API monitoring with Prometheus & Grafana | Golang APIYouTubeStart of suggested clipEnd of suggested clipSo generate the metrics. And then the server component is installed somewhere different from whereMoreSo generate the metrics. And then the server component is installed somewhere different from where your application is running and the server is responsible to pull these metrics.
How do I monitor services with Prometheus?
1:294:37How to set up Prometheus monitoring for your services - YouTubeYouTubeStart of suggested clipEnd of suggested clipWe can use a decorator to time how long it takes to load a specific route. And we can increment theMoreWe can use a decorator to time how long it takes to load a specific route. And we can increment the counters as needed finally we specify the endpoint where prometheus metrics should be exposed.
Who uses Prometheus?
In May 2016, the Cloud Native Computing Foundation accepted Prometheus as its second incubated project, after Kubernetes. The blog post announcing this stated that the tool was in use at many companies including DigitalOcean, Ericsson, CoreOS, Weaveworks, Red Hat, and Google. Prometheus 1.0 was released in July 2016.
What are the basic functionalities of Alert Manager with Prometheus?
The Alertmanager handles alerts sent by client applications such as the Prometheus server. It takes care of deduplicating, grouping, and routing them to the correct receiver integration such as email, PagerDuty, or OpsGenie. It also takes care of silencing and inhibition of alerts.
What are the advantages of Grafana?
Grafana benefits include: Customizable dashboards are feature-rich and can be configured to display data from a wide range of databases using visualization tools such as heatmaps, histograms, and charts. The platform is flexible and easy to use. Native support of a broad range of databases.
What are the components of Prometheus?
Componentsthe main Prometheus server which scrapes and stores time series data.client libraries for instrumenting application code.a push gateway for supporting short-lived jobs.special-purpose exporters for services like HAProxy, StatsD, Graphite, etc.an alertmanager to handle alerts.various support tools.
What Is Prometheus?
Prometheus is an open-source tool that’s meant to monitor and collect metrics from applications. The point of this system is to make it easy for users to see and understand important metrics that let them know how well an application is doing. In fact, Prometheus is able to collect over one million metrics per second, and then store them until you’re ready to retrieve them.
How to query Prometheus?
As long as the files are published on an HTTP server, you can query Prometheus by using the hostname, path, and port in order for the server to scrape the data you need. Monitoring the service metrics for an app can tell you important information about memory utilization, CPU utilization, the number of threads, and more.
How does Prometheus store metrics?
The metrics that Prometheus will collect and store are easily identified through their labels and simple to locate when you need them as you work on ways to improve your app.
Does Prometheus have an alert manager?
When you use Prometheus to track metrics, you’ll find there’s more to it than just the server. You’ll also get an AlertManager, which is supposed to handle any alerts that the server sends you regarding the metrics for your application.
Is Prometheus a good app?
Prometheus is known for being a powerful, reliable open-source tool that will tell you nearly everything you need to know about an app’s performance. However, it does have a reputation for being somewhat complicated to install and configure, especially if you’re not used to working with programs like this without getting help.
Does MetricFire have Prometheus?
When you come to MetricFire for the hosted version of Prometheus, you can count on getting the help of a full-scale platform that comes complete with system, infrastructure, and application monitoring. You’ll also get access to plugins for other open-source tools, meaning you get more functionality when you go through us for help with app metrics.
What is Prometheus?
Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud. Since its inception in 2012, many companies and organizations have adopted Prometheus, and the project has a very active developer and user community. It is now a standalone open source project and maintained independently of any company. To emphasize this, and to clarify the project's governance structure, Prometheus joined the Cloud Native Computing Foundation in 2016 as the second hosted project, after Kubernetes.
When does it fit?
It fits both machine-centric monitoring as well as monitoring of highly dynamic service-oriented architectures. In a world of microservices, its support for multi-dimensional data collection and querying is a particular strength.
How does Prometheus store metrics?
metrics information is stored with the timestamp at which it was recorded, alongside optional key-value pairs called labels.
What is the Prometheus ecosystem?
The Prometheus ecosystem consists of multiple components , many of which are optional: the main Prometheus server which scrapes and stores time series data. client libraries for instrumenting application code. a push gateway for supporting short-lived jobs.
Why is Prometheus used?
Prometheus is designed for reliability, to be the system you go to during an outage to allow you to quickly diagnose problems. Each Prometheus server is standalone, not depending on network storage or other remote services. You can rely on it when other parts of your infrastructure are broken, and you do not need to setup extensive infrastructure to use it.
What is time series in metrics?
In layperson terms, metrics are numeric measurements, time series mean that changes are recorded over time. What users want to measure differs from application to application. For a web server it might be request times, for a database it might be number of active connections or number of active queries etc.
Why is metric important?
Metrics play an important role in understanding why your application is working in a certain way. Let's assume you are running a web application and find that the application is slow. You will need some information to find out what is happening with your application. For example the application can become slow when the number of requests are high. If you have the request count metric you can spot the reason and increase the number of servers to handle the load.
What is Prometheus used for?
Prometheus is an open-source tool used for metrics-based monitoring and alerting. It is a popular and powerful solution for Kubernetes monitoring. Prometheus was originally built by SoundCloud. Now it is a standalone open source project, maintained by Cloud Native Computing Foundation ( CNCF ).
What is Prometheus monitoring?
Prometheus is a very powerful monitoring system, designed from the ground up to support and work with dynamic environments. Prometheus has gained a reputation as the de facto monitoring software in recent times. Its ease of use, versatility and literally endless integration options make it a favorite in the monitoring and alerting world.
How many metrics can Prometheus cluster collect?
Properly tuned and deployed Prometheus cluster can collect millions of metrics every second that makes it well suited for complex workloads.
What is a push mechanism in Prometheus?
In contrast to a “push” mechanic system, Promethe us is relying on targets (applications/servers) providing simple HTTP endpoints that its data retrieval workers can pull/scrape from.
Does Prometheus require custom software?
Promethe us doesn’t require us to install any custom software or configuration on servers, or even in container images to enable collecting metrics. Prometheus doesn’t require our applications to use CPU cycles pushing metrics to some centralized collector. Prometheus handles service failure/unavailability gracefully.
Is Prometheus a good billing service?
If you need 100% accuracy, such as for per-request billing, Prometheus is not a good choice as the collected data will likely not be detailed and complete enough.
Why was Prometheus named Prometheus?
Writing in late antiquity of the fourth and fifth century, the Latin commentator Marcus Servius Honoratus explained that Prometheus was so named because he was a man of great foresight (vir prudentissimus), possessing the abstract quality of providentia, the Latin equivalent of Greek promētheia ( ἀπὸ τής πρόμηθείας ).
What does Prometheus mean by "afterthought"?
The etymology of the theonym prometheus is debated. The usual view is that it signifies "forethought," as that of his brother Epimetheus denotes "afterthought". Hesychius of Alexandria gives Prometheus the variant name of Ithas, and adds "whom others call Ithax", and describes him as the Herald of the Titans. Kerényi remarks that these names are "not transparent", and may be different readings of the same name, while the name "Prometheus" is descriptive.
What is the story of Prometheus and the theft of fire?
Hesiod revisits the story of Prometheus and the theft of fire in Works and Days ( 42–105 ). In it the poet expands upon Zeus's reaction to Prometheus' deception. Not only does Zeus withhold fire from humanity, but "the means of life" as well ( 42 ). Had Prometheus not provoked Zeus's wrath, "you would easily do work enough in a day to supply you for a full year even without working; soon would you put away your rudder over the smoke, and the fields worked by ox and sturdy mule would run to waste" ( 44–47 ).
What was the trick that Prometheus played against Zeus?
In the trick at Mecone ( 535–544 ), a sacrificial meal marking the "settling of accounts" between mortals and immortals, Prometheus played a trick against Zeus. He placed two sacrificial offerings before the Olympian: a selection of beef hidden inside an ox's stomach (nourishment hidden inside a displeasing exterior), and the bull's bones wrapped completely in "glistening fat" (something inedible hidden inside a pleasing exterior). Zeus chose the latter, setting a precedent for future sacrifices ( 556–557 ). Henceforth, humans would keep that meat for themselves and burn the bones wrapped in fat as an offering to the gods. This angered Zeus, who hid fire from humans in retribution. In this version of the myth, the use of fire was already known to humans, but withdrawn by Zeus.
Where was Prometheus worshipped?
Athens was the exception, here Prometheus was worshipped alongside Athene and Hephaistos. The altar of Prometheus in the grove of the Academy was the point of origin for several significant processions and other events regularly observed on the Athenian calendar. For the Panathenaic festival, arguably the most important civic festival at Athens, a torch race began at the altar, which was located outside the sacred boundary of the city, and passed through the Kerameikos, the district inhabited by potters and other artisans who regarded Prometheus and Hephaestus as patrons. The race then travelled to the heart of the city, where it kindled the sacrificial fire on the altar of Athena on the Acropolis to conclude the festival. These footraces took the form of relays in which teams of runners passed off a flaming torch. According to Pausanias (2nd century AD), the torch relay, called lampadedromia or lampadephoria, was first instituted at Athens in honour of Prometheus.
When was Prometheus first mentioned?
Hesiod's Theogony and Works and Days. Theogony. The first recorded account of the Prometheus myth appeared in the late 8th-century BC Greek epic poet Hesiod 's Theogony ( 507–616 ). In that account, Prometheus was a son of the Titan Iapetus by Clymene, one of the Oceanids.
When was Prometheus released from captivity?
The event of the release of Prometheus from captivity was frequently revisited on Attic and Etruscan vases between the sixth and fifth centuries BC. In the depiction on display at the Museum of Karlsruhe and in Berlin, the depiction is that of Prometheus confronted by a menacing large bird (assumed to be the eagle) with Hercules approaching from behind shooting his arrows at it. In the fourth century this imagery was modified to depicting Prometheus bound in a cruciform manner, possibly reflecting an Aeschylus-inspired manner of influence, again with an eagle and with Hercules approaching from the side.
What is a Prometheus gauge?
A Prometheus gauge is a specific type of metric used for measurements. That means your service always returns to Prometheus the current value of whatever it is you’re measuring. Prometheus is regularly scraping your service for metrics though, and when your gauge’s current value is returned Prometheus stores this against the current time.
What does a gauge represent in Prometheus?
the gauge represents the current value of whatever you’re measuring. you can use most standard Prometheus functions to query a gauge, plus some interesting gauge-specific ones. don’t try to use the increase or rate functions with a gauge. To learn more about the other types of Prometheus metrics, check out the article The 4 Types Of Prometheus ...
What is the Java client library for Prometheus gauges?
The Java client library for creating Prometheus gauges is io.prometheus:simpleclient and can be downloaded from Maven central.
How often does Prometheus scrape?
By default Prometheus scrapes any configured targets once every minute. If your service publishes a gauge then Prometheus expects it to be in this format.
Do Prometheus functions work with gauges?
Most Prometheus functions do work with gauges, but there are some important exceptions such as increase and rate. This is because these functions make calculations based on the assumption that the value only ever goes up. You should never use these functions with a gauge.
Does Prometheus store gauges?
Promethe us stores observed gauge values over time, allowing you to run all sorts of queries against them using the PromQL query language.
What Does Prometheus do?
More About Exporters
- Prometheus works well for recording any purely numeric time series. It fitsboth machine-centric monitoring as well as monitoring of highly dynamicservice-oriented architectures. In a world of microservices, its support formulti-dimensional data collection and querying is a particular strength. Prometheus is designed for reliability, to be the syste...
Querying Prometheus Data
Alerts
What Can’T Prometheus do?
- Exporters are responsible for exposing your application’s metrics ready for Prometheus to collect. Many users will begin with a simple deployment of the Node Exporterwhich collects basic system metrics from the Linux host it’s installed on. A wide variety of exporters are availablewith many provided by Prometheus itself or official community vendors. Whether you’re monitoring a popul…
Conclusion
- Data within Prometheus is queried using PromQL, a built-in query language that lets you select, parse, and format metrics using a variety of operators and functions. As Prometheus uses time-series storage, there’s support for time-based range and duration selections that make light work of surfacing data added within a specific time period. Here’s an example that surfaces all the me…