First of all, we have to check if this hard disk is recognized by the system:

root@localhost ~]# fdisk -l

Let’s say your drive is assigned /dev/sdc. Then we scan for logical volumes so you’ll see something like this:

Disk /dev/sdc: 20.0 GB, 20020396032 bytes
255 heads, 63 sectors/track, 2434 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System
/dev/sdc1   *           1          13      104391   83  Linux
/dev/sdc2              14        1670    13309852+   f  W95 Ext’d (LBA)
/dev/sdc3            1671        2434     6136830   8e  Linux LVM
/dev/sdc5              14          75      497983+  82  Linux swap / Solaris
/dev/sdc6              76        1670    12811806   83  Linux

Next we scan for physical volumes:

root@localhost ~]# pvscan

You’ll get:

PV /dev/sdc3   VG VolGroup00   lvm2 [5.84 GB / 32.00 MB free]
Total: 1 [5.84 GB] / in use: 1 [5.84 GB] / in no VG: 0 [0   ]

Then scan for logical volumes:

root@localhost ~]# lvscan

You’ll get:

inactive            ‘/dev/VolGroup00/LogVol00′ [5.31 GB] inherit
inactive          ‘/dev/VolGroup00/LogVol01′ [512.00 MB] inherit

Logical volume that we want to access must be active, therefore we type in:

root@localhost ~]# /usr/sbin/lvchange -a y /dev/VolGroup00/LogVol00

Then mount to file system:

root@localhost ~]# mount -t ext3 /dev/VolGroup00/LogVol00 /mnt/

When done, unmount and revert to inactive mode:

root@localhost ~]# /usr/sbin/lvchange -a n /dev/VolGroup00/LogVol00

I did this in openSUSE.

It’s as simple as:

root@localhost ~]# ls -a

better yet, use alias if you want to include attributes:

root@localhost ~]# ll

far better with attributes:

root@localhost ~]# l

How cool is that? I didn’t create an alias for it. I accidentally hit hard return after pressing ‘l’. Nice huh.

I’m beginning to study OpenSuse openSUSE and I would like to commit myself on learning more about it.

Once in a while I’ll insert ‘How-to’ in this blog. With this, let me begin with yast2.

To do system update using command line, type in:

yast2 –update

I’ve been wanting to use Nagios for monitoring services that run in the network.

What services are these?

These are http, https httpd among others.

That’s why I installed Nagios first on a linux box running on Centos 5.3. Unfortunately, I had to reformat that box for something else.

So when I finally had a machine that can handle my needs for multiple virtual machines, I started playing around with more distributions.

One of them is OpenSuse 11.1.

And now, how to install Nagios eh?

Run terminal
type in:
zypper install nagios nagios-www

That’s all!

All you need to do is to check if apache is already installed. If not:
zypper install apache2

Then start nagios:
rcnagios start && insserv nagios

and start apache:
rcapache2 start

lastly, to access nagios via browser, we have to add user and password by:
htpasswd2 -c /etc/nagios/htpasswd.users nagiosadmin

You should be able to navigate nagios via http://yourhost/nagios

To manually mount, in commandline type:
root@locahost ~]# mount -t cifs //servername/sambashare /mount/point -o username=aby,password=aby

To mount during bootup, edit file system table:
root@localhost ~]# vi /etc/fstab

and insert:
//servername/sambashare /mount/point cifs user=aby,pass=aby defaults rw 0 0