Setup a linux box
Example lead - highlighted near the title
Linux post installation guide
[[TOC]]
Mounting external drives
Google drive
Run the following installation steps
$ sudo add-apt-repository ppa:alessandro-strada/ppa
$ sudo apt-get update
$ sudo apt-get install google-drive-ocamlfuse
Once successfully installed, authorize google-drive-ocamlfuse client with your desired Google account using the following command.
$ google-drive-ocamlfuse
This is going to pop open a page on your browser where Google will request you to choose a Gmail account to continue with the setup
Finally, create a mount point in your home directory and mount the directory
$ mkdir ~/google-drive
$ google-drive-ocamlfuse ~/google-drive
For a full description with pictures click here
Dropbox drive
To install the Dropbox Drive click here
mounting disks
Edit the /etc/ftab file as root. Add the following lines
192.168.6.64:/Public /mnt/nfs_6_64 nfs vers=3,defaults 0 0
192.168.8.7:/Public /mnt/nfs_8_7 nfs vers=3,defaults 0 0
192.168.6.15:/PALM /mnt/PALM_dataserv nfs vers=3,noatime,nodiratime,noacl,nocto,bg 0 0
192.168.8.9:/Public /mnt/nfs_8_9 nfs defaults 0 0
192.168.8.60:/data/tronador /mnt/tronador nfs defaults 0 0
192.168.6.30:/GREY /mnt/grey nfs defaults 0 0
192.168.8.12:/GLACIER/disk1 /mnt/GLACIER_disk1 nfs defaults 0 0
192.168.8.12:/GLACIER/disk3 /mnt/GLACIER_disk3 nfs defaults 0 0
192.168.6.173:/DataVolume/Public /mnt/nfs_WD nfs vers=3,defaults 0 0
then run
mkdir /mnt/nfs_6_64 /mnt/nfs_8_7 /mnt/PALM_dataserv /mnt/nfs_8_9
chmod 777 /mnt/nfs_6_64 /mnt/nfs_8_7 /mnt/PALM_dataserv /mnt/nfs_8_9 /mnt/GLACIER_disk3 /mnt/GLACIER_disk1
mkdir /mnt/GLACIER_disk4 /mnt/tronador /mnt/grey /mnt/GLACIER_disk1 /mnt/GLACIER_disk3
chmod 777 /mnt/GLACIER_disk1 /mnt/tronador /mnt/grey
then you can mount any drive by its name in the /etc/fstab file or its directory mountpoint. For instance:
mount /mnt/grey
Other configurations
Setting up login with a public key
in client do:
> ssh-keygen
enter for passphrase
cat ~/.ssh/id_rsa.pub | ssh marcnol@krakatoa "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys"
done!
If for some reason, you still need to enter a password after setting up RSA then it may be because your .ssd directory in the server side has permissions that your ssh does not like.
To check this do:
tail /var/log/auth.log
and you may see something like:
Sep 24 13:02:17 krakatoa sshd[122249]: Authentication refused: bad ownership or modes for file /home/marcnol/.ssh/authorized_keys
To solve it do:
chmod 700 -R ~/.ssh
Use crontab to automate services
This example will show how to run a script rsync_home.sh at 22:00 every day. Start by running:
crontab -e
and add
0 22 * * * runuser -l marcnol -c '/home/marcnol/sysadm/rsync_home.sh'
then run
mkdir /home/marcnol/sysadm
create /home/marcnol/sysadm/rsync_home.sh and add:
date >> /home/marcnol/sysadm/last_backup.log
rsync -avz --delete /home/marcnol /mnt/PALM_dataserv/DATA/BCKUSER > /home/marcnol/sysadm/rsync_home.log
Setup of linux boxes
creating group cbs and changing User ID
do
vi /etc/group
cbs:x:1000:marcnol
then for marcnol do:
vi /etc/passwd
marcnol:x:UID:1000:Marcelo Nollmann:/home/marcnol:/bin/tcsh
and replace UID by your desired user ID.
You can also change the uid of a user by doing:
usermode -u 1002 rata
chown rata:users -R /home/rata
Creating sysadm and giving root privileges
useradd sysadm --uid 1001 --home /home/sysadm --create-home --groups root --gid 0
visudo
add < sysadm ALL=(ALL) ALL > to the “User privilege specification” section
Find the entry for %wheel. This is the wheel group. The ‘%’ tells sudo to match vs a # group name in /etc/groups. Uncomment the line so it looks like:
%wheel ALL=(ALL) ALL
Save and exit with :wq (not necessary when using gedit or kate) Add the desired username to the wheel group.The new group is effective for given user #after new login.
/usr/sbin/usermod -G wheel sysadm
Edit the sudoers file again. This time remove the ability for every user to run sudo. #Comment out these lines, save and exit.
#Defaults targetpw # ask for the password of the target user i.e. root
#ALL ALL=(ALL) ALL # WARNING! Only use this together with 'Defaults targetpw'!
changing permissions to files in PALM_dataserv
chown -R 10XX:1000 /home/user chown -R 10XX:1000 /data
chown -R 2701:1000 /home/hernan chown -R 2648:1000 /home/cardozo
Activation compte root (pour faire > su)
> sudo passwd root
network
network configuration in ubuntu
do
> vi /etc/network/interfaces :
then modify as follows:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.6.13
netmask 255.255.255.0
gateway 192.168.6.1
dns-nameservers 192.168.2.10 192.168.1.10
dns-search intranet.fr
the run
> vi /etc/resolv.conf :
and modify as follows:
nameserver 192.168.2.10
nameserver 192.168.1.10
search intranet.fr
Activation sshd
> apt-get install ssh
puis, ajout dans /etc/rc.local :
if [ ! -d /var/run/sshd ]; then
mkdir /var/run/sshd
chmod 0755 /var/run/sshd
fi
/usr/sbin/sshd
exit 0
NFS (pour disque centraux des comptes utilisateurs (mais ca peut être aussi : AFM, FLUO, PALM ….)
> vi /etc/fstab
# CBS
192.168.2.6:/CMPT /CMPT nfs vers=3,bg 0 0
192.168.2.11:/CMPT2 /CMPT2 nfs vers=3,bg 0 0
CSH (necessaire pour certains comptes )
>apt-get install csh
>apt-get install tcsh
>unlink /bin/csh; ln -s /bin/tcsh /bin/csh
