Wifi Network Bootstrap for the Raspberry Pi
Comitup is a software package that provides a service to establish Wifi
networking on a headless computer (that is, one with no video, keyboard, or mouse).
Comitup supports the following capabilities:
- The comitup service, which automatically connects to any previously
Wifi Access Points, if possible. Otherwise, it will create a stand-alone
Access Point with the name (SSID) 'comitup-<nnn>',
where '<nnn>' is a unique, persistent number.
- Defined ZeroConf mdns address name for
'comitup-<nnn>.local', advertising the IP address of the Raspbery
Pi on all interfaces.
- Connection information is published as a _comitup._tcp service, visible
using a ZeroConf Browser.
- A comitup-web service, which provides a web interface for selecting and
authenticating against an existing Access Point.
- A captive portal, facilitating discovery of the web service on systems
that support it.
- The portal also features a "Locate" function that will blink the front
green LED on a a Raspberry Pi, allowing the user to discriminate between
multiple Comitup Pi's.
- If two wifi interfaces are available on the device, the comitup hotspot
will remain on one, and the other will be used for the upstream connection.
Routing/masquerading between the two networks is established automatically.
- A comitup-cli command-line utility for interacting with comitup.
The Comitup Image is a microSD disk image for the Raspberry Pi, providing
an operating system with the comitup service included. The Comitup Image is an
extension of standard Raspberry Pi OS which includes Comitup, and supports
the following additional
- The ssh service is enabled by default. Be sure to change the "pi" user
- The Raspberry Pi Ethernet port will automatically configure for the host
network if possible. If a DHCP server is not found, the port will set to
a static configuration, with an IP address of 10.0.0.2/24.
- The hostname will be set to the comitup AP name on first
You can get Comitup by installing the package, or by downloading a Raspberry Pi OS image including the package (the preferred method).
- Raspberry Pi OS/Debian users can install the package with "sudo apt-get install comitup" (though Buster
users shouldn't - more up-to-date-versions of the comitup package are highly recommended).
- New package versions are available in the Package Archive or the comitup PPA repository.
- Remove any references to wifi interfaces in "/etc/network/interfaces" so that Network Manager/Comitup can manage them.
- See Installing Comitup for other possible installation issues.
To burn onto an SD card for the Raspberry Pi.
- Comitup Image (3.9 GB, 1.2 GB compressed)
- Comitup Lite Image (1.9 GB, 479 MB compressed)