1、安装vnc和vncserver
#yum install tigervnc tigervnc-server
2、启动VNC服务# vncserverYou will require a passWord to access your desktops.Password:Verify:会提示输入密码,这个密码是远程登录时所需要输入的密码。 我尝试无密码登录,好像还不行,必须整个密码。这里要关闭防火墙,/etc/init.d/iptables stop
3、编辑VNC配置文件vi /etc/sysconfig/vncserversVNCSERVERS="1:root" //去掉#,按实际配置桌面号和用户名VNCSERVERARGS[2]="-geometry 1024x768 -nolisten tcp -localhost" //去掉#,配置分辨率修改后保存退出
4、设置vnc服务器开机自动启动:方法一:使用“ntsysv”命令启动图形化服务配置程序,选中vncserver服务,点击确定即可。方法二:在终端里使用chkconfig命令:# chkconfig vncserver on# chkconfig --list vncservervncserver 0:off 1:off 2:on 3:on 4:on 5:on 6:off
5、更改VNC连接密码:(也可以不改)# vncpasswd
到这里VNC服务端就基本完成了,可以在另一台机器上用VNC客户端(如RealVNC)远程登录CentOS:输入:CentOS系统IP:5901(默认端口号) (如在RealVNC窗口输入:192.168.1.100:5901)之后会提示输入密码。
6、如果连接上以后出现灰屏或者只显示终端(命令行)不进入图形界面(已安装图形界面的情况下),可以按照下面的方法设置:
进入用户的home目录,cd /home/user如果是用root账号登录的,那么当前目录就是用户根目录# cd ~/.vncvi xstartup //编辑xstartup配置#twm & //加#,注释掉这一行gnome-session & //添加这一行保存退出即可正常连接!
vbox安装:http://www.CUOXin.com/xia520pi/p/3545666.html
公司测试环境安装的都是RHEL6.3,在进行虚拟机克隆后,发现clone的虚拟机网卡起不来,具体报如下错误:[root@localhost Desktop]# service network restartShutting down loopback interface: [ OK ]Bringing up loopback interface: [ OK ]Bringing up interface eth0: Error: No suitable device found: no device found for connection 'System eth0'. [FAILED]当你执行ifconfig命令的时候,会发现显示eth1网卡的配置文件却为/etc/sysconfig/network-scripts/ifcfg-eth0。
[root@localhost network-scripts]# ifconfig|grep addreth1 Link encap:Ethernet HWaddr 00:0c:29:f4:95:e3 inet6 addr: fe80::20c:29ff:fe5c:65b7/64 Scope:Link Interrupt:19 Base address:0x2024 inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host[root@localhost network-scripts]# lsifcfg-eth0 ifdown-isdn ifup-aliases ifup-plusb init.ipv6-globalifcfg-lo ifdown-post ifup-bnep ifup-post net.hotplugifdown ifdown-ppp ifup-eth ifup-ppp network-functionsifdown-bnep ifdown-routes ifup-ippp ifup-routes network-functions-ipv6ifdown-eth ifdown-sit ifup-ipv6 ifup-sitifdown-ippp ifdown-tunnel ifup-isdn ifup-tunnelifdown-ipv6 ifup ifup-plip ifup-wireless[root@localhost network-scripts]#产生这个问题的原因是虚拟机分配给操作系统的虚拟网卡MAC地址是不一样的。第一个系统的网卡MAC地址记录在了/etc/udev/rules.d /70-persistent-net.rules,命名为eth0。新克隆分配的系统的网卡MAC地址也记录在了该文件当中,与之前的系统一样,因此有 了冲突。
可以查看一下两个机子的这个70-persistent-net.rules文件的内容
第一个系统:[root@localhost rules.d]# cat 70-persistent-net.rules# This file was automatically generated by the /lib/udev/write_net_rules# PRogram, run by the persistent-net-generator.rules rules file.## You can modify it, as long as you keep each rule on a single# line, and change only the value of the NAME= key.
# PCI device 0x1022:0x2000 (pcnet32)SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:f4:95:e3", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
克隆后的系统:
[root@localhost rules.d]# cat 70-persistent-net.rules# This file was automatically generated by the /lib/udev/write_net_rules# program, run by the persistent-net-generator.rules rules file.## You can modify it, as long as you keep each rule on a single# line, and change only the value of the NAME= key.
# PCI device 0x1022:0x2000 (pcnet32)SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:f4:95:e3", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
我们可以看到这两个系统中的MAC地址一样。
问题解决方法:删除克隆后这个系统中的 /etc/udev/rules.d/70-persistent-net.rules文件,重启后系统会重新生成一个新的虚拟网卡MAC地址,然后把这 个文件里NAME="eth1"的eth1改成eth0,同时也要修改ATTR{address}里的mac地址和/etc/sysconfig /network-scripts/ifcfg-eth0文件mac地址,并与新的虚拟网卡MAC地址保持一致。
如:将原文件的SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:f4:95:e3", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
改为 SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:5c:65:b7", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
修改/etc/sysconfig/network-scripts/ifcfg-eth0文件
DEVICE="eth0"IPV6INIT="yes"NM_CONTROLLED="yes"ONBOOT="yes"TYPE="Ethernet"UUID="05944003-ae77-4c9d-9e58-3ec2851db71d"DEFROUTE=yesIPV4_FAILURE_FATAL=yesIPV6_AUTOCONF=yesIPV6_DEFROUTE=yesIPV6_FAILURE_FATAL=noNAME="System eth0"HWADDR=00:0c:29:5c:65:b7然后重启网络服务,发现一切正常了。[root@localhost Desktop]# service network restartShutting down interface eth0: Device state: 3 (disconnected) [ OK ]Shutting down loopback interface: [ OK ]Bringing up loopback interface: [ OK ]Bringing up interface eth0: Active connection state: activatingActive connection path: /org/freedesktop/NetworkManager/ActiveConnection/1state: activatedConnection activated [ OK ]
设置IP后,再检查一下[root@localhost Desktop]# ifconfig|grep addreth0 Link encap:Ethernet HWaddr 00:0C:29:5C:65:B7 inet addr:192.168.0.129 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe5c:65b7/64 Scope:Link Interrupt:19 Base address:0x2024 inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host注:如果你执行ifconfig命令的时候,发现仍然显示eth1而不是eth0,可以将系统重启一遍就变过来了。
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