www.manolo-lopez.com | Octubre 2007

El cerebro nos juega una mala pasada

manolo | 27 Octubre, 2007 17:27

No siempre lo que vemos es lo que realmente es, si no mirar la caja imposible y el tubo doblado en el Youtube

Slackware and Virtualbox

manolo | 13 Octubre, 2007 14:55

Following the virtual procedures that are today, I delete my laptop and create only the linux particion , in order to avoid the dual booting windows and linux.

Once all my slackware is properly installed , I use the Virtualbox program in order to install my windows Xp,

I really do not use a lot windows , but sometimes i need some compatibilities , and this really helps.

Here you can see the screenshot for witual box.

Network is up and running with no apparent issues. please select NAT, just if you need special configuration is not needed.

Read the VirtualBox documentation.

Slackware linux automated backups

manolo | 12 Octubre, 2007 12:36

I will try to show how my server have and automated way to backup daily , weekly and each month , all the important files , in order to have and smooth an quick way to restore the server in and emergency crash .I use rsync throug ssh conection.

Firts at all , I have a slackware distribution powering my server firewall in a dsl site. and acting like a apache and ssh server called "x350" black in the photo

Inside my home LAN , i have and Pentium II IBM ,with name "help" , white in the photo, acting like as backup and samba server for my family windows Pc,s.It,s a 200Gib hard disk enough for all my Photos , music and personal files-

The photo is :

Ibm server , Slackware inside,of course !

I have to setup automated ssh login fronm the server "x350"(black one) to the backup server , in my case "help"(white one):

root@x350:~# scp root/.ssh/id_rsa.pub root@help:/root/.ssh/authorized_keys

you'll need to enter the password here

"yourpassword"

now check that all is working as expected;

root@x350# ssh help

now You don,t need to enter de password,any more
appear the following:

root@help#

You can change the "help" for you IP address , but is faster to have define "help" Ip under /etc/hosts.

In the "help" server edit and remove # in the file
/etc/inetd.conf,in order to have rsync server "on"

rsync stream tcp nowait root /usr/bin/rsync rsyncd --daemon

Restart services witch

/etc/rc.d/rc.inetd restart

Be sure with nmap that rsync server is up

manolo@help:~$ nmap localhost

Starting nmap 3.93 ( http://www.insecure.org/nmap/ ) at 2007-10-09 20:29 CEST
Interesting ports on localhost (127.0.0.1):
(The 1659 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp open smtp
37/tcp open time
113/tcp open auth
139/tcp open netbios-ssn
445/tcp open microsoft-ds
587/tcp open submission
873/tcp open rsync

You are sure that rsync is up and running, ok , lets go to the "x350" web and firewall server.we are going to use crond.

go to /etc/cron.daily

root@x350:/etc/cron.daily#
create a file backup_x350_daily an do chmod +x backup_x350_daily

The content that works great for backup_x350_daily is

#!/bin/sh
rsync -e ssh -a --delete /etc /root /var /home root@help:/home/backup/x350/daily

This verify daily the directories /etc/ root /var and /home , and are "mirroed" againts the contents
in the "help" backup server under /home/backup/x350/daily

I also have the following files (scrips)
backup_x350_weekly under /etc/cron.weekly
backup_server_monthly under /etc/cron.monthly
That enable to recover diferent backups date.

The contents for backup_x350_weekly is:
#!/bin/sh
rsync -e ssh -a --delete /etc /root /var /home root@help:/home/backup/x350/weekly

The contents for backup_x350_montly is:
#!/bin/sh
rsync -e ssh -a --delete /etc /root /var /home root@help:/home/backup/x350/monthly

Keep in mind that instead the "help" name you can change to your personal IP
example
rsync -e ssh -a --delete /etc /root /var /home root@192.168.1.34:/home/backup/x350/daily.

I hope that it helps , and confirm that is tested and working for Slackware linux.

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