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* Separate install instructions; add to external plugins * Remove duplicate external plugin link; modify overiew page * Remove unnecessary partials; clean up plugin overview page * cleaning up plugin explanations * final language updates * modify external plugin overview page * Update website/content/docs/plugins/index.mdx Co-authored-by: Wilken Rivera <wilken@hashicorp.com> * Update website/content/docs/plugins/install-plugins.mdx Co-authored-by: Wilken Rivera <wilken@hashicorp.com> * Move HCP Support to under developing plugins * Link HCP Packer support to other dev pages; fix overviews * clean up more language and links * Add External Plugins link to docs sidebar under plugin section * Update website/data/docs-nav-data.json Co-authored-by: Wilken Rivera <wilken@hashicorp.com>
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---
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description: |
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Packer plugins let you add Packer functionality without modifying
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the core source code. Packer plugins are able to add new builders,
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provisioners, hooks, and more.
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page_title: Plugins
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---
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# Packer Plugins
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Packer plugins are separate, standalone applications that perform tasks during each build.
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During a `packer build`, the process list shows `packer-` prefixed applications. One of those applications is the Packer binary, and the rest are plugins. Packer launches one plugin process for each component in the build.
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The Packer binary has a set of built-in plugins that it can find and run automatically. You can also define a list of external plugins in your template for Packer to run and communicate with throughout the build. These external plugins extend Packer functionality without modifying the core source code.
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Refer to the following plugin documentation:
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- **Built-in Plugins:** Use [builders](/docs/builders) to create machines and images, [data sources](/docs/datasources) to fetch data, [provisioners](/docs/provisioners) to install and configure machine images, and [post-processors](/docs/post-processors) to perform additional tasks after provisioning
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- **External Plugins:** Review the documentation for [available external plugins](/plugins) not included with the Packer binary
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- **Installing Plugins:** [Installation Guides](/docs/plugins/install-plugins) to add external plugins to your Packer template and install the binaries
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- **Developing Plugins:** Get started [creating custom external plugins](/docs/plugins/creation) |