linux-centos6.5 Server Setup and initialization configuration (bottom)

Conveyor belt: linux-centos6.5 Server Setup and initialization configuration details (top)

Continue with the above installation, after the installation will appear below the interface click Reboot Restart

After rebooting, you can see the following TTY terminal interface as this is the minimum setup input root and previously configured password

The first step is to give the firewall the light.

Iptables-f command for emptying rules

Here is a command (I forgot to hit it)/etc/init.d/iptables save to save the currently emptied rule

Chkconfig iptables stop booting does not allow the boot firewall

Chkconfig--list iptables See if Iptables is off

Here's how Linux security shuts down commands in execution

Change the value of the Red place variable to diabled

The above operation can make SELinux boot does not start, but the current is still started the following command can close the current SELinux

Getenforce View SELinux Service status

Setenforce 0 Close Current SELinux

Put the above two services iptables and selinux off after we configure the network related

If I install the system in front of the configuration is able to access the external network as follows we ping Baidu

There's a lot of people in the network that are stuck in this, so I'll tell you in detail

cd/etc/sysconfig/network-scripts/

Vim Ifcfg-eth0

Here is the network configuration file you can check for errors

Deivce indicates the device name

Type indicates network types here is Ethernet

UUID indicates the ID of the device

Onboot indicates whether to start this is important must be opened

The others don't say too much, in fact, the most important thing is that onboot must be started.

If you do not want to configure in this file you can use the graphical interface configuration command as follows:

Setup (if Onboot is on)

You can enter the configuration interface

Select a third network configuration

Select the first configuration device

Select the first configuration Ethernet card

Make up your own configuration, remember to restart the service after configuration

/etc/init.d/network restart

Change the hostname of course I've changed it when I installed it.

The host name above is only temporarily active

To be permanently effective, you need to configure a file command as follows

Vim/etc/sysconfig/network

Then it appears as in the place where the variable value is changed to your host name.

Add a network Map here is an IP address similar to your hostname mapping DNS

Configuring local and network Yum sources

First mount the optical drive, remember to connect your disc to the virtual machine

Edit the self-starter file to enable auto-mount CD-ROM

Vim/etc/fstab on the last line to add the following

Enter YUM.REPOS.D This directory is used to store the Yum source

Each file must end with a. Repo suffix

Enter the following command to complete the configuration of the local Yum source

For the network Yum source I am using the Ari image address is: Http://mirrors.aliyun.com/repo/Centos-6.repo

Configuration of the network Yum Source two commands are done.

Wget-o/etc/yum.repos.d/centos6.5-base Http://mirrors.aliyun.com/repo/Centos-6.repo

Yum Makecache

My operating system is version 6.5, so it's Centos6. If you have a different version, remember to change the version number of the URL above.

Create a snapshot with local and network Yum sources and clone a virtual machine

Before configuring the snapshot, it is recommended to turn the boot mode to 3 if you are minimizing the installation (no graphical interface does not have 5 mode) the default is 3

You can see the snapshot created in the edit virtual machine

Take a snapshot and enter a snapshot name is a scary color.

I took two of them because I often crashed the OS.

Next, clone the virtual machine on the Menu bar tab to find the configuration and there's a clone inside.

Select Current state or select an existing snapshot

Create a complete clone so that the new clone machine and the original machine will not affect each other

Configure name and file path

Complete

Then change the IP and hostname to avoid conflicts

Enter the network configuration file Vim/etc/sysconfig/network-scripts/ifcfg-eth0

Change the IP address to remove the NIC address

Delete In addition to the NIC configuration file

Modify Host name Vim/etc/sysconfig/network

Modify the Network Map vim/etc/hosts

Reboot create a snapshot after you change it.

linux-centos6.5 Server Setup and initialization configuration (bottom)