etcd/Documentation/dl_build.md
2016-10-04 10:26:51 -07:00

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# Download and build
## System requirements
The etcd performance benchmarks run etcd on 8 vCPU, 16GB RAM, 50GB SSD GCE instances, but any relatively modern machine with low latency storage and a few gigabytes of memory should suffice for most use cases. Applications with large v2 data stores will require more memory than a large v3 data store since data is kept in anonymous memory instead of memory mapped from a file. than For running etcd on a cloud provider, we suggest at least a medium instance on AWS or a standard-1 instance on GCE.
## Download the pre-built binary
The easiest way to get etcd is to use one of the pre-built release binaries which are available for OSX, Linux, Windows, appc, and Docker. Instructions for using these binaries are on the [GitHub releases page][github-release].
## Build the latest version
For those wanting to try the very latest version, build etcd from the `master` branch.
[Go](https://golang.org/) version 1.6+ (with HTTP2 support) is required to build the latest version of etcd.
etcd vendors its dependency for official release binaries, while making vendoring optional to avoid import conflicts.
[`build` script][build-script] would automatically include the vendored dependencies from [`cmd`][cmd-directory] directory.
Here are the commands to build an etcd binary from the `master` branch:
```
# go is required
$ go version
go version go1.6 darwin/amd64
# GOPATH should be set correctly
$ echo $GOPATH
/Users/example/go
$ mkdir -p $GOPATH/src/github.com/coreos
$ cd $GOPATH/src/github.com/coreos
$ git clone https://github.com/coreos/etcd.git
$ cd etcd
$ ./build
$ ./bin/etcd
...
```
## Test the installation
Check the etcd binary is built correctly by starting etcd and setting a key.
Start etcd:
```
$ ./bin/etcd
```
Set a key:
```
$ ETCDCTL_API=3 ./bin/etcdctl put foo bar
OK
```
If OK is printed, then etcd is working!
[github-release]: https://github.com/coreos/etcd/releases/
[go]: https://golang.org/doc/install
[build-script]: ../build
[cmd-directory]: ../cmd