808f79f00a
* Allow getting credentials via EC2 role This is subtly different than the existing `role_arn` solution, which allows Prometheus to assume an IAM role given some set of credentials already in-scope. With EC2 roles, one specifies the role at instance launch time (via an instance profile.) The instance then exposes temporary credentials via its metadata. The AWS Go SDK exposes a credential provider that polls the [instance metadata endpoint][1] already, so we can simply use that and it will take care of renewing the credentials when they expire. Without this, if this is being used inside EC2, it is difficult to cleanly allow the use of STS credentials. One has to set up a proxy role that can assume the role you really want, and launch the EC2 instance with the proxy role. This isn't very clean, and also doesn't seem to be [supported very well][2]. [1]: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html [2]: https://github.com/aws/aws-cli/issues/1390 * Automatically try to detect EC2 role credentials The `Available()` function exposed on ec2metadata returns a simple true/false if the ec2 metadata is available. This is the best way to know if we're actually running in EC2 (which is the only valid use-case for this credential provider.) This allows this to "just work" if you are using EC2 instance roles. |
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| .github | ||
| cmd | ||
| config | ||
| console_libraries | ||
| consoles | ||
| discovery | ||
| documentation | ||
| notifier | ||
| pkg | ||
| prompb | ||
| promql | ||
| relabel | ||
| retrieval | ||
| rules | ||
| scripts | ||
| storage | ||
| template | ||
| util | ||
| vendor | ||
| web | ||
| .codeclimate.yml | ||
| .dockerignore | ||
| .gitignore | ||
| .promu.yml | ||
| .travis.yml | ||
| CHANGELOG.md | ||
| circle.yml | ||
| code-of-conduct.md | ||
| CONTRIBUTING.md | ||
| Dockerfile | ||
| LICENSE | ||
| MAINTAINERS.md | ||
| Makefile | ||
| NOTICE | ||
| README.md | ||
| VERSION | ||
Prometheus 
Visit prometheus.io for the full documentation, examples and guides.
Prometheus, a Cloud Native Computing Foundation project, is a systems and service monitoring system. It collects metrics from configured targets at given intervals, evaluates rule expressions, displays the results, and can trigger alerts if some condition is observed to be true.
Prometheus' main distinguishing features as compared to other monitoring systems are:
- a multi-dimensional data model (timeseries defined by metric name and set of key/value dimensions)
- a flexible query language to leverage this dimensionality
- no dependency on distributed storage; single server nodes are autonomous
- timeseries collection happens via a pull model over HTTP
- pushing timeseries is supported via an intermediary gateway
- targets are discovered via service discovery or static configuration
- multiple modes of graphing and dashboarding support
- support for hierarchical and horizontal federation
Architecture overview
Install
There are various ways of installing Prometheus.
Precompiled binaries
Precompiled binaries for released versions are available in the download section on prometheus.io. Using the latest production release binary is the recommended way of installing Prometheus. See the Installing chapter in the documentation for all the details.
Debian packages are available.
Docker images
Docker images are available on Quay.io.
You can launch a Prometheus container for trying it out with
$ docker run --name prometheus -d -p 127.0.0.1:9090:9090 quay.io/prometheus/prometheus
Prometheus will now be reachable at http://localhost:9090/.
Building from source
To build Prometheus from the source code yourself you need to have a working Go environment with version 1.8 or greater installed.
You can directly use the go tool to download and install the prometheus
and promtool binaries into your GOPATH:
$ go get github.com/prometheus/prometheus/cmd/...
$ prometheus --config.file=your_config.yml
You can also clone the repository yourself and build using make:
$ mkdir -p $GOPATH/src/github.com/prometheus
$ cd $GOPATH/src/github.com/prometheus
$ git clone https://github.com/prometheus/prometheus.git
$ cd prometheus
$ make build
$ ./prometheus --config.file=your_config.yml
The Makefile provides several targets:
- build: build the
prometheusandpromtoolbinaries - test: run the tests
- test-short: run the short tests
- format: format the source code
- vet: check the source code for common errors
- assets: rebuild the static assets
- docker: build a docker container for the current
HEAD
More information
- The source code is periodically indexed: Prometheus Core.
- You will find a Travis CI configuration in
.travis.yml. - See the Community page for how to reach the Prometheus developers and users on various communication channels.
Contributing
Refer to CONTRIBUTING.md
License
Apache License 2.0, see LICENSE.