--- page_title: "config.vm - Vagrantfile" sidebar_current: "vagrantfile-machine" --- # Machine Settings **Config namespace: `config.vm`** The settings within `config.vm` modify the configuration of the machine that Vagrant manages. ## Available Settings `config.vm.boot_timeout` - The time in seconds that Vagrant will wait for the machine to boot and be accessible. By default this is 300 seconds.
`config.vm.box` - This configures what [box](/v2/boxes.html) the machine will be brought up against. The value here should match one of the installed boxes on the system.
`config.vm.box_download_client_cert` - Path to a client certificate to use when downloading the box, if it is necessary. By default, no client certificate is used to download the box.
`config.vm.box_download_insecure` - If true, then SSL certificates from the server will not be verified. By default, if the URL is an HTTPS URL, then SSL certs will be verified.
`config.vm.box_url` - The URL that the configured box can be found at. If the box is not installed on the system, it will be retrieved from this URL when `vagrant up` is run. This can also be an array of multiple URLs. The URLs will be tried in order. Note that any client certificates, insecure download settings, and so on will apply to all URLs in this list.
`config.vm.graceful_halt_timeout` - The time in seconds that Vagrant will wait for the machine to gracefully halt when `vagrant halt` is called. Defaults to 300 seconds.
`config.vm.guest` - The guest OS that will be running within this machine. This defaults to `:linux`, and Vagrant will auto-detect the proper distro. Vagrant needs to know this information to perform some guest OS-specific things such as mounting folders and configuring networks.
`config.vm.hostname` - The hostname the machine should have. Defaults to nil. If nil, Vagrant won't manage the hostname. If set to a string, the hostname will be set on boot.
`config.vm.network` - Configures [networks](/v2/networking/index.html) on the machine. Please see the networking page for more information.
`config.vm.provider` - Configures [provider-specific configuration](/v2/providers/configuration.html), which is used to modify settings which are specific to a certain [provider](/v2/providers/index.html). If the provider you're configuring doesn't exist or is not setup on the system of the person who runs `vagrant up`, Vagrant will ignore this configuration block. This allows a Vagrantfile that is configured for many providers to be shared among a group of people who may not have all the same providers installed.
`config.vm.provision` - Configures [provisioners](/v2/provisioning/index.html) on the machine, so that software can be automatically installed and configured when the machine is created. Please see the page on provisioners for more information on how this setting works.
`config.vm.synced_folder` - Configures [synced folders](/v2/synced-folders/index.html) on the machine, so that folders on your host machine can be synced to and from the guest machine. Please see the page on synced folders for more information on how this setting works.
`config.vm.usable_port_range` - A range of ports Vagrant can use for handling port collisions and such. Defaults to `2200..2250`.