The following is a brief description of the types of equipment, and how they are used:
Standard:
Standard partition partition may include a file system or swap space,
also can provide a container for the software, RAID and LVM physical
volume.
Logical volume (LVM): create a LVM
partition to automatically generate an LVM logical volume. LVM can be
used in the physical disk, improve performance.
LVM
streamline configuration: the use of thin provisioning, you can manage
free space, called the simplified pool, it can according to need by the
application, can be allocated to the storage pool any number of devices.
The distribution of memory space required for cost-effective, thin cell
can be dynamically extended.
BTRFS: Btrfs is a
feature of several devices with the same file system. It can deal with
and manage multiple files, large files and the volume ratio of ext2,
ext3 and ext4 file system.
Software RAID: create
two or more than two software RAID partition allows you to create a
RAID device. A RAID partition is assigned to each disk on the system.
The file system(File
system ): In the drop-down
menu, select the corresponding file system type to the partition of the.
Check the adjacent Format dialog box formatting existing partitions, or
select it, to keep your data.
The following is a brief description of the file system, and how they are used:
XFS:
XFS is a file system supports up to 16 exabytes (about 160000 TB) in a
highly scalable, high performance file system, the file up to 8 exabytes
(about 8000000 terabytes), and directory structure containing tens of
millions of entries. XFS supports metadata log, which is conducive to
faster crash recovery. The XFS file system can also be defragmented and
adjustment, also install and activate. The file system is selected by
default, and strongly recommended. The maximum size of a XFS partition
support for 500 TB.
EXT4: The ext4 file system
is based on the ext3 file system, and incorporates a number of
improvements. These measures include the larger file system and larger
files, disk space, there is no limit to the number of sub directory in
the file system, check the speed faster and faster, more efficient
allocation of support, more powerful logging.
EXT3:
The ext3 file system is based on the EXT2 file system, it has a major
advantage. Use the file system to reduce the time spent in recovery file
after a system crash, because the file system consistency is not
necessary to run the fsck utility through every time a collision occurs
to check the metadata.
EXT2: The EXT2 file
system supports the standard Unix file types, including ordinary file,
directory or symbolic links. It also provides dispatch long file names,
maximum 255 characters ability.
VFAT: The VFAT file system is the Linux file system and FAT file system on Microsoft Windows compatible long file name.
swap:
The swap partition is used to support virtual memory. In other words,
when data is written to the swap partition does not have enough memory
to store your data being processed by the system of.
BIOS boot: The need for a GUID partition table (GPT) in BIOS boot devices in a very small partition.
The EFI system partition: the need for a GUID partition table (GPT) in the UEFI system boot device a small partition.
Click
the "update" button to save the changes and select customize other
partition. Please note, changes will not be applied until you really
start, from the installation summary page to install. Click the "reset
all" button to give up all modified all partitions and start again.
(3)EstablishLVMLogical volume(Create
LVM Logical Volume)
Logical
volume management (LVM) describes the physical storage space at the
bottom, such as a hard drive or LUN a simple logic view. In the physical
storage partition is represented as a physical volume, can be combined
into a volume group. Each volume group can be divided into multiple
logical volumes, each of which is similar to the standard disk
partition. Therefore, LVM logical volumes as spanning multiple physical
disk partition.
Tips:
Note that LVM configuration is only available in graphical installation
program. Installed in text mode, the LVM configuration is not
available. If you need to start from scratch to create a LVM
configuration, press Ctrl + Alt+ F2 to use a different virtual console,
and run the LVM command. To return to the text mode setup, press CTRL +
ALT + F1.
A partition of at least CentOS
installation, but CentOS suggests that there are at least four: /boot,
/home, swap, /. You can also create you need additional partition.
1, Establish/boot
Partition
mounted in the /boot contains the operating system kernel, which allows
the system to your CentOS file, and use in the system boot process.
Because most of the firmware of the restrictions, to create a smaller
partition to save these suggestions. In most cases, a 500 MB boot
partition is enough.
First create a specific
partitioning scheme of the mount point. The choice of the mount point
will appear in the left pane of the drop-down menu"LVM".
Use
the "+" button at the bottom of each panel mount point. Add a mount
point new dialog box, and then open the. Both the choice of paths or
input /boot preset from the drop-down menu in the mounting point. Then
enter the partition size, the use of ordinary size unit 500M. Click "add
the mount point" button to create partition.
2, Establish/
This
is the "/", or root directory, is located in. The root directory is the
top-level directory structure. By default, all of the files will be
written to the partition, unless the installation path written in a
different partition (for example, /boot or /home). Although the root
partition is 5GB, you can install a minimal installation, suggest at
least the allocation of 10GB, so that it can be fully installed, select
all the package group.
Tips:
Don't confuse / directory under the /root directory. The /root
directory is the main directory of root users. The /root directory is
sometimes referred to as the distinction between slash root apart from
the root directory.
Use the "+" button at
the bottom of each panel mount point. Add a mount point new dialog box,
and then open the. Both the choice of default from the mounting point of
the drop-down menu path or input /. Then enter the partition size, the
use of ordinary size unit 8GB. Click "add the mount point" button to
create partition.
3, Establish/home
Apart
from the user data storage system data, create a special partition
volume group within the /home directory. This partition should be based
on the amount of data to be stored in the local, such as the size of the
number of users. This will enable you to upgrade or re install CentOS,
but does not delete the user data files.
Use
the "+" button at the bottom of each panel mount point. Add a mount
point new dialog box, and then open the. Both the choice of paths or
input /home preset from the drop-down menu in the mounting point. Then
enter the partition size, the use of ordinary size unit 10GB. Click "add
the mount point" button to create partition.
4, Establishswap
Exchange
partition support virtual memory; data to be written to the swap
partition when there is not enough memory to the data being processed by
the system to store your. Exchange capability is the workload of system
memory, rather than the entire system memory function, and therefore is
not equal to the total amount of memory system. Therefore, the analysis
of system will run which application and load these applications will
serve to identify the system memory, the workload is very important.
Use
the "+" button at the bottom of each panel mount point. Add a mount
point new dialog box, and then open the. Both the choice of paths or
input swap preset from the drop-down menu in the mounting point. Then
enter the partition size, residual capacity. Click "add the mount point"
button to create partition.
When
has been created and customized for all file system and the mount
point, click "finish" button. If any encryption file system you choose,
you will be prompted to create a password. Then, a dialog box appears,
showing all storage related operations, the installer will take. This
includes creating, resize or delete partition and file system. You can
see all of the changes, and then click "cancel and return to the custom
partition" back. To confirm the abstract, click "accept the change",
return to the installation summary page. Any other equipment partition
in the installation, select them, back to the manual partitioning
screen, and in this section the same process.
11.To start the installation(Begin
Installation)
When
all parts of the installation summary screen required has been
completed, warned disappeared in the menu at the bottom of the screen,
start the Install button becomes available.
12.Configure and schedule(Configuration
and Progress)
Once
you click on the installation summary screen to start the installation,
there will be progress screen. The progress of the installation on the
screen, as it wrote selection software package to your system.
13.ROOTPassword(Root
Password)
Set
the root account and password is an important step in the installation
process. Root account (also known as the super user) to install the
software package, to upgrade the RPM packet, and execute the maintenance
of most of the system. The system can complete control of your root
account. For this reason, the root account best only used to perform
system maintenance or management.
14.Create user(User
Account)
Create
a common during installation (non root) user account, click schedule
screen user settings. Create user screen, allows you to set up a user
account, and the configuration of its parameters. Although the proposed
ban in the installation process, this step is optional, can be carried
out after the installation is complete.
15.The installation is complete(Installation
Complete)
Click
the restart button, reboot the system and start using CentOS. Remember
to remove the installation media, if it will automatically restart does
not pop up.
16.Login interface
On
your computer boot sequence is completed, the CentOS load and start. By
default, the startup process is hidden behind a progress bar graph
display screen. If login is not installed the X window system, prompt:.
Three the initial set.(Firstboot)
Firstboot
application is only applicable to the system installed with X Window
system at installation time. If the installation does not include X
Window system Firstboot application does not appear.
After the Linux system installation is complete, reboot the system will enter the initial setup screen, as shown below.
1.License information
This
page shows all the license terms for CentOS. If you agree to the terms
in the license, please click "I agree to the license agreement and
click" finish "" .
2.The initial setup
When
all the parts of the initial setting screen required has been
completed. "To complete the configuration" button becomes available.
3.KdumpKernel crash dump
Use
this page to choose whether or not to use this system on the core dump.
The core dump is a kernel crash dumps mechanism. In the case of a
system crash, the core dump will capture your system, can be the cause
of the accident information to determine the priceless. Please note that
if you choose this option, you will need to retain the memory of Kdump,
and the memory can not be used for any other purpose.
If
you want to use Kdump, please select "enable kdump", and then select
the amount of memory to be reserved for the Kdump, and click "forward".
4.Login interface
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