虛拟機安裝CentOS6.3兩個問題

虛拟機下CentOS安裝教程：http://blog.csdn.net/21aspnet/article/details/6961518

由于前一陣子重新裝win7，win7下的虛拟機CentOS也就沒有，重裝中遇到兩個主要問題，記錄一下。

1，連接配接secureCRT問題：

1）切換到root下，ntsysv打開sshd服務，關閉防火牆ip6tables， iptables

2）配置網卡，保證虛拟機能夠上網

[[email protected] ~]$ ifconfig 

eth0      Link encap:Ethernet  HWaddr 00:0C:29:83:DE:5E  

          inet addr:192.168.1.96  Bcast:192.168.1.255  Mask:255.255.255.0

          inet6 addr: fe80::20c:29ff:fe83:de5e/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:1256 errors:0 dropped:0 overruns:0 frame:0

          TX packets:413 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:105296 (102.8 KiB)  TX bytes:101337 (98.9 KiB)

          Interrupt:19 Base address:0x2000 

lo        Link encap:Local Loopback  

          inet addr:127.0.0.1  Mask:255.0.0.0

          inet6 addr: ::1/128 Scope:Host

          UP LOOPBACK RUNNING  MTU:16436  Metric:1

          RX packets:16 errors:0 dropped:0 overruns:0 frame:0

          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:0 

          RX bytes:1080 (1.0 KiB)  TX bytes:1080 (1.0 KiB)

2，建立使用者，添加sudo權限，取消每次sudo輸入密碼，這裡已經建立centos使用者。

[centos@localhost ~]$ su root

Password: 

[[email protected] centos]# ll /etc/sudoers

-r--r-----. 1 root root 4080 Aug 11 22:47 /etc/sudoers

[[email protected] centos]# chmod +w /etc/sudoers  //修改檔案加上w權限，才能夠改寫

[[email protected] centos]# vim /etc/sudoers

。。。。。。

## The COMMANDS section may have other options added to it.

##

## Allow root to run any commands anywhere 

root    ALL=(ALL)       ALL

centos All=(ALL)       ALL

## Allows members of the 'sys' group to run networking, software, 

## service management apps and more.

# %sys ALL = NETWORKING, SOFTWARE, SERVICES, STORAGE, DELEGATING, PROCESSES, LOCATE, DRIVERS

## Allows people in group wheel to run all commands

# %wheel        ALL=(ALL)       ALL

## Same thing without a password

# %wheel        ALL=(ALL)       NOPASSWD: ALL

%centos  ALL=(ALL) NOPASSWD: NOPASSWD: ALL

。。。。。。

[[email protected] centos]#chmod -w /etc/sudoers //此檔案權限-r--r-----，修改之後需要改回，否則将無法執行sudo

[[email protected] centos]# ll /etc/sudoers

-r--r-----. 1 root root 4080 Aug 11 22:47 /etc/sudoers

[[email protected] centos]# exit

exit

[[email protected] ~]$ sudo ls

mywork

[[email protected] ~]$ OK