cjdns/doc/install/gentoo.md

Gentoo:

cjdns is not yet in the main Gentoo repository, so you will have to use an overlay. The easiest way is to use Layman but you can do it by hand, too.

Layman:

First, you need to install layman.

emerge layman

If layman is installed correctly, you can add the overlay

layman -f
layman -a weuxel

For future update of the overlay use

layman -S

Now you can install cjdns

emerge cjdns

By hand:

You will have to clone the overlay repository

cd /opt
git clone https://github.com/Weuxel/portage-weuxel.git

Now tell portage to use this repo

cd /etc/portage/repos.conf/

Create a file portage-weuxel.conf containing

[weuxel]
location = /opt/portage-weuxel
masters = gentoo
auto-sync = yes

Now sync

emerge --sync

And install cjdns

emerge cjdns

Automatic crash detection and restart

Copy the the openrc init script from contrib/openrc to /etc/init.d/ and modify the CONFFILE and command parameter to your needs. Then start cjdns by issuing

/etc/init.d/cjdns start

Configure the init system to autostart cjdns

rc-update add cjdns default

Copy the service_restart script contrib/gentoo/service_restart.sh to any convenient directory on your system and modify the eMail address. If you do not wish to be notified, comment out the whole line. Now add an crontab entry like this

# Restart crashed Services
* * * * *       root    /path/to/script/service_restart.sh