packer-cn/website/content/docs/provisioners/index.mdx

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description: |
Provisioners use builtin and third-party software to install and configure the
machine image after booting.
page_title: Provisioners
---
# Provisioners
Provisioners use builtin and third-party software to install and configure the
machine image after booting. Provisioners prepare the system for use, so common
use cases for provisioners include:
- installing packages
- patching the kernel
- creating users
- downloading application code
See the [`provisioner`](/docs/templates/hcl_templates/blocks/build/provisioner) block documentation to learn more
about working with provisioners. For information on an individual provisioner,
choose it from the sidebar.