Centos installation

In order to install MOR, you need the Centos 6 system (Install newest CentOS 6 version).

First of all, you need to download the Install image. Decide which architecture you need (i386 or x86_64) and download only the first CD out of 6(7), because only the first CD is necessary to install the base system.

How do you choose between i386 (32bit) and x86_64 (64bit)? There is a simple rule: if you have 4gb of RAM or more, choose x86_64 (64bit).

Centos can be downloaded from here: http://mirror.centos.org/centos/5/isos/ version 6 can be found here: http://mirror.centos.org/centos/6/isos/ (we recommend downloading latest releases).

As an example, for i386 you should download the file CentOS-5.4-i386-bin-1of6.iso.

For x86_64, download the file CentOS-5.4-x86_64-bin-1of7.iso

Make sure file IS NOT LiveCD and extension is ISO, but not .torrent!

After you burn and boot from this CD, you will see:



Press enter. System will ask you to check your installation media. Press Skip to save the time:



Now select your language here and click Next:



Select your keyboard layout and click Next:



If your hard disk is blank (no partition) you will get this message. Click Yes, discard any data and then click Next:



Type your Hostname and click Next:



Select your time zone and click Next:



Create a strong password for your system and click Next.



Read this menu carefully. First section will use all the spaces of your HDD and erase all data. Second Section will only remove previous Linux partition. Third section will reduce size of exiting partition and create some free spaces to install CentOS. In last section you can create partition manually. Just choose last section to manually create partition:



Here you have to create root ( / ) partition to install CentOS and Swap area. Select free and click Create.



Select Standard Partition and click Create. Optionally, if your hardware supports it and you are familiar with configuration, you can setup RAID1.



You have to create a Linux swap area. Swap area should be same size as server's RAM size, but no more than 4GB. In File System Type select Swap. Give the size of this partition in MB and click Ok:



Next, you have to create root ( / ) partition. Again, select free, click Create and click "Create" in next window too.

Change "Mount Point" to " / ", select "Fill to maximum allowable size" and click "OK".

"File System Type" can be either EXT3 or EXT4.



Click "Next".

Now you will get a warning message (Format Warning). Click Format. If additional warning table will appear, click "Write changes to disk".



Click Next:



Select your desired option. If you want desktop version select Desktop or if you want to install server then select Basic Server. You can also customize default software installation by clicking on Add additional Software repositories or Modify repository. Then click Next.



After finishing all the process you will get a "Congratulations" message. Click on Reboot.



After reboot your computer you will get a login screen. Just type root as user name and your password.

Troubleshooting

If the installer is asking you for CD #2, #3, #4, or anything else, it means you failed to UNSELECT all packets, as was pointed out above.

Solution:

1. Read the manual carefully once again.

2. Do as it says EXACTLY (unselect ALL packets).

3. Reinstall.

See also

CentOS installation on OVH servers