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135 lines
5.2 KiB
Markdown
135 lines
5.2 KiB
Markdown
# Prometheus
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Bedecke deinen Himmel, Zeus! A new kid is in town.
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Prometheus is a generic time series collection and computation server that is
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useful in the following fields:
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1. Industrial Experimentation / Real-Time Behavioral Validation / Software Release Qualification
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2. Econometric and Natural Sciences
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3. Operational Concerns and Monitoring
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The system is designed to collect telemetry from named targets on given
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intervals, evaluate rule expressions, display the results, and trigger an
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action if some condition is observed to be true.
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## Prerequisites
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If you read below in the _Getting Started_ section, the build infrastructure
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will take care of the following things for you in most cases:
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1. Go 1.0.3.
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2. GVM: [https://github.com/moovweb/gvm](https://github.com/moovweb/gvm) is highly recommended as well.
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3. LevelDB: [https://code.google.com/p/leveldb/](https://code.google.com/p/leveldb/).
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4. Protocol Buffers Compiler: [http://code.google.com/p/protobuf/](http://code.google.com/p/protobuf/).
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5. goprotobuf: the code generator and runtime library: [http://code.google.com/p/goprotobuf/](http://code.google.com/p/goprotobuf/).
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6. Levigo, a Go-wrapper around LevelDB's C library: [https://github.com/jmhodges/levigo](https://github.com/jmhodges/levigo).
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7. GoRest, a RESTful style web-services framework: [http://code.google.com/p/gorest/](http://code.google.com/p/gorest/).
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8. Prometheus Client, Prometheus in Prometheus [https://github.com/prometheus/client_golang](https://github.com/prometheus/client_golang).
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9. Snappy, a compression library for LevelDB and Levigo [http://code.google.com/p/snappy/](http://code.google.com/p/snappy/).
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## Getting Started
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For basic help how to get started:
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* The source code is periodically indexed: [Prometheus Core](http://godoc.org/github.com/prometheus/prometheus).
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* For UNIX-like environment users users, please consult the Travis CI configuration in _.travis.yml_ and _Makefile_.
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* All of the core developers are accessible via the [Prometheus Developers Mailinglist](https://groups.google.com/forum/?fromgroups#!forum/prometheus-developers).
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### Working with GVM
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Starting out, the following workflow is advised:
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$ gvm install go1.0.3
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$ gvm use go1.0.3
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$ gvm pkgset create prometheus
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$ gvm pkgset use prometheus
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This is mainly due to the fact that it allows the user to partition the
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compile-time side-effects from the rest of one's work environment, particularly
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``${GOPATH}``.
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Read below in the _General_ section.
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### Not Using GVM
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It is entirely possible to build Prometheus without ``gvm``. I presently do not
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advise taking this route due to build environment pollution both against
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Prometheus and from its build infrastructure onto the system---namely
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``${GOPATH}``.
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If you really want to avoid GVM, execute the following:
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$ touch build/gvm-stamp
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Read below in the _General_ section.
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### General
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For first time users, simply run the following:
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$ make
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If you run into problems, try the following:
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$ SILENCE_THIRD_PARTY_BUILDS=false make
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Upon having a satisfactory build, it's possible to create an artifact for
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end-user distribution:
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$ make package
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$ find build/package
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``build/package`` will be sufficient for whatever archiving mechanism you
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choose. The important thing to note is that Go presently does not
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staticly link against C dependency libraries, so including the ``lib``
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directory is paramount. Providing ``LD_LIBRARY_PATH`` or
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``DYLD_LIBRARY_PATH`` in a scaffolding shell script is advised.
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Executing the following target will start up Prometheus for lazy users:
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$ ARGUMENTS="-foo -bar -baz" make run
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``${ARGUMENTS}`` is passed verbatim into the makefile and thusly Prometheus as
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``$(ARGUMENTS)``. This is useful for quick one-off invocations and smoke
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testing.
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### Mac OS X
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We have a handy [Getting started on Mac OS X](documentation/guides/getting-started-osx.md) guide.
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### Problems
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If at any point you run into an error with the ``make`` build system in terms of
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its not properly scaffolding things on a given environment, please file a bug or
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open a pull request with your changes if you can fix it yourself.
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Please note that we're explicitly shooting for stable runtime environments and
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not the latest-whiz bang releases; thusly, we ask you to provide ample
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architecture and release identification remarks for us.
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## Testing
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$ make test
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[](https://travis-ci.org/prometheus/prometheus)
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## Contributing
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1. To start, reach out via our mailing list (mentioned above) and ask us what
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the current priorities are. We can find a good isolated starter project for
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you.
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2. Keeping code hygiene is important. We thusly have a practical preference
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for the following:
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1. Run ``make format`` to ensure the correctness of the Go code's layout.
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2. Run ``make advice`` to find facial errors with a static analyzer.
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3. Try to capture your changes in some form of a test. Go makes it easy to
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write [Table Driven Tests](https://code.google.com/p/go-wiki/wiki/TableDrivenTests).
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There is no mandate to use this said scaffolding mechanism, but it _can_
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make your life easier in the right circumstances.
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3. Welcome aboard!
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## License
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Apache License 2.0
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