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B2BITS® Cluster Solution (CentOS Linux)

Page 12 of 20

November 13, 2008

CentOS 5 Enterprise Linux Server installation

Note: all disk devices attached to Cluster Node systems are intended for cluster solution. Please backup all information (if

any) stored on disk drives to avoid data loses. Each node installation requires local hard disk formatting. Shared storage

disk device will be formatted during Cluster Node 1 installation.

1) Power on PowerVault 220S shared storage system.

2) Power on Cluster Node 1.

3) Insert into internal CD-ROM device first CD of CentOS 5 distribution

Note: make sure that Cluster Node 1 starts seeking bootable device from internal CD-ROM drive. (To make sure that this is

the case, configure Dell 1850 PowerEdge BIOS setup. See Appendix A-1)

4) Start CentOS 5 installation

5) Follow installation instructions

Note: If the message “The partition table on device SDA was unreadable” appears – please select “Initialize this device,

erasing ALL DATA”.

Note: If the message is “The partition table on device SDB was unreadable” – please select “Initialize this device, erasing ALL

DATA”. Message should appear only within Cluster Node 1 installation. If message appears during Cluster Node 2 installation

– it signals about wrong shared storage configuration (See Appendix A-3)

Disk partitioning

6) Detailed instruction about local hard disk partitioning:

Select “Create custom layout” than press “NEXT”

Create next partitions on disk “sda” (only “sda” checkbox must be marked while partition

parameters entering). New partition creates by pressing “NEW” button.

Partition #

Mount point

type

Size (Megabytes)

Additional Size

Options

/boot

ext3

Fixed Size, Force to be a

primary partition

none after

selecting FS type

swap

2*RAM size (for example 1024 if

Cluster Node have 512 Mb of RAM)

Fixed Size

/var

ext3

8192

Fixed Size

ext3

8192

Fixed Size

/tmp

ext3

8192

Fixed Size

/usr

ext3

none after selecting additional

size options

Fill to maximum allowable

size

Finally disk “sda” partition table should be like

/dev/sda

/dev/sda1 /boot ext3 format_partition: yes partition_size (MB): 78

/dev/sda2 /tmp ext3 format_partition: yes partition_size (MB): 8189

/dev/sda3 / ext3 format_partition: yes partition_size (MB): 8189

/dev/sda4

/dev/sda5 /var ext3 format_partition: yes partition_size (MB): 8189

/dev/sda6 none swap format_partition: yes partition_size (MB): xxx

/dev/sda7 /usr ext3 format_partition: yes partition_size (MB): xxx

Press “NEXT” to save partition table to disk.

Network adapters configuration

On the corresponding installation screen, please configure network adapters using values from the

table (if not specified – values are ok for both nodes). The following configuration parameters

constitute an example to serve the purposes of this document. It will work only if there is no

conflict with other IP addresses, netmasks and gateways in your LAN. Also, user should keep in

mind that these settings will not guaranty any access to the cluster from the Internet (with all the

consequences). Please consult with your LAN system administrator to obtain comfortable IP

address spaces.

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