Cluster der kan alt/Configure NFS server, Apt cacher and SSH auto login

NFS Server

Installer NFS Server

apt-get install nfs-kernel-server -y

Edit the exports file

nano /etc/exports

Add this line at the bottom

/home/      10.0.0.0/24(rw,no_root_squash,no_subtree_check,async)

Export the new share

exportfs

Restart the NFS server service

service nfs-kernel-server restart

Enter the idmapd.conf file

nano /etc/idmapd.conf

Change the domain to "Cluster"

Domain = Cluster

Restart the idmapd service

service idmapd restart

apt-cacher

Disregard of this manual for APT-CACHER for Ubuntu 14.04+ Use: apt-cacher-ng
http://www.tecmint.com/apt-cache-server-in-ubuntu/

Install the apt-cacher program

apt-get install apt-cacher

Enter the apt-cacher.conf file

nano /etc/apt-cacher/apt-cacher.conf

Insert the following

path_map = ubuntu de.archive.ubuntu.com/ubuntu; ubuntu-updates de.archive.ubuntu.com/ubuntu ; ubuntu-security security.ubuntu.com/ubuntu
allowed_hosts=*

Enter the apt-cacher file

nano /etc/default/apt-cacher

set the autostart to 1

AUTOSTART=1

Restart the apt-cacher service

sudo /etc/init.d/apt-cacher restart

Auto SSH login

Make a crypto dsa(digital signature algorithm) key for the auto login

ssh-keygen -t dsa

Copy the dsa key to the hidden /.ssh/ folder i the /home/<username> folder, which will be mounted on the nodes

cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys