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Installation of YaCy on Debian

Installation on Debian-based GNU/Linux operating systems is easy using our Debian repository:

http://debian.yacy.net

Create a debian source list file for YaCy sources:

echo 'deb http://debian.yacy.net ./' > /etc/apt/sources.list.d/yacy.list 

Install the developer key with one of the two next methods

wget http://debian.yacy.net/yacy_orbiter_key.asc -O- | apt-key add -
apt-key advanced --keyserver pgp.net.nz --recv-keys 03D886E7

And finally install YaCy itself

apt-get update
apt-get install openjdk-7-jre-headless # java 7 is sufficient, only a headless version is needed
apt-get install yacy

Important File Locations

After the installation, the yacy application path is:

/usr/share/yacy

The DATA-path is:

/var/lib/yacy

The configuration files should be here:

/etc/yacy/

/etc/yacy/yacy.conf is created using the /usr/share/yacy/defaults/yacy.init file on the first run.

The log files should be here:

/var/log/yacy/

Managing YaCy

When you have installed YaCy using the Debian repository, YaCy is started automatically after a OS startup, and stopped before shutdown.

You can also start and stop YaCy from the command line with: (must be run as root)

/etc/init.d/yacy stop
/etc/init.d/yacy start
/etc/init.d/yacy restart

The YaCy web server runs on port 8090 by default. The administration pages are at

http://localhost:8090/

but you can also set any other port for the interface using the administration pages of YaCy. A Port 80 is possible, but it is better to get access to this port using a Portforwarding.

Automatic Updates

When configured this way, the YaCy-internal auto-updater does not work. An automatic update must be done with OS tools. i.e. with a crontab command. An example for that is the following line, which you must write into /etc/crontab

0 6 * * * root apt-get update && apt-get -y --force-yes install yacy

In Ubuntu, the above line is only valid for the system crontab file (located at /etc/crontab) - you can edit this file on newer Ubuntu OS directly without using the crontab command. Below are comments from the file in Ubuntu 12.04:

# /etc/crontab: system-wide crontab
# Unlike any other crontab you don't have to run the `crontab'
# command to install the new version when you edit this file
# and files in /etc/cron.d. These files also have username fields,
# that none of the other crontabs do.

If you want to use the root user crontab in Ubuntu instead, an example would be:

username@hostname:~$ sudo crontab -e 
no crontab for root - using an empty one

Select an editor.  To change later, run 'select-editor'.
 1. /bin/ed
 2. /bin/nano        <---- easiest
 3. /usr/bin/vim.basic

Choose 1-3 [2]: <enter>

Then add the following at the end of the file:

0 6 * * * /usr/bin/apt-get update && /usr/bin/apt-get -y --force-yes install yacy

Please note, there is no user name on the line above, and absolute (full) paths are used here to prevent binary location problems!

Next Steps

After you configured YaCy, you may also want to set a static IP to get a unique IP to your YaCy peer.

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