Packer must first be installed on the machine you want to run it on. To make installation easy, Packer is distributed as a binary package for all supported platforms and architectures. This page will not cover how to compile Packer from source, as that is covered in the README and is only recommended for advanced users.
To install packer, first find the appropriate package for your system and download it. Packer is packaged as a "zip" file.
Next, unzip the downloaded package into a directory where Packer will be
installed. On Unix systems,
/usr/local/packer is generally good,
depending on whether you want to restrict the install to just your user or
install it system-wide. On Windows systems, you can put it wherever you'd like.
After unzipping the package, the directory should contain a single binary
packer. The final step to
installation is to make sure the directory you installed Packer to is on the
PATH. See this
for instructions on setting the PATH on Linux and Mac. This
contains instructions for setting the PATH on Windows.
Verifying the Installation
After installing Packer, verify the installation worked by opening a new command
prompt or console, and checking that
packer is available:
$ packer usage: packer [--version] [--help] <command> [<args>] Available commands are: build build image(s) from template fix fixes templates from old versions of packer inspect see components of a template push push template files to a Packer build service validate check that a template is valid version Prints the Packer version
If you get an error that
packer could not be found, then your PATH environment
variable was not setup properly. Please go back and ensure that your PATH
variable contains the directory which has Packer installed.
Otherwise, Packer is installed and you're ready to go!
Alternative Installation Methods
While the binary packages is the only official method of installation, there are alternatives available.
If you're using OS X and Homebrew, you can install Packer:
$ brew install packer
On some RedHat-based Linux distributions there is another tool named
installed by default. You can check for this using
which -a packer. If you get
an error like this it indicates there is a name conflict.
$ packer /usr/share/cracklib/pw_dict.pwd: Permission denied /usr/share/cracklib/pw_dict: Permission denied
To fix this, you can create a symlink to packer that uses a different name like
packer.io, or invoke the
packer binary you want using its absolute path,