RH131Linux管理笔记八-安装和管理XEN虚拟机.doc

RH131Linux管理笔记八-安装和管理XEN虚拟机安装需要用到NFS，所以今天我们会简单说说NFS的。 虚拟化大家应该都知道吧，现在炒的比较热门的东西，linux的虚拟化软件只有这三种：virtualbox开源免费的；xen 开源免费的；VMware server 商业运作。 我们今天只要学习下xen的图形界面和文字界面的安装及管理。 Xen是可用于Linux内核的一种虚拟化技术，让您可以像在现有环境中一样安装并测试新的升级，而不必担心破坏原有的系统。Xen是在剑桥大学作为一个 研究项目被开发出来的，它已经在开源社区中得到了极大的推动。Xen是一款既支持半虚拟化paravirtualizing VMM（虚拟机监视器，Virtual Machine Monitor）也支持完全虚拟化的技术。所谓的半虚拟化就像win的桌面和内核的关系一样，被绑定在一定的。而xen就是相当于当前真实系统绑定在一起 的。半虚拟化最大的优点就是节约系统开销。相对于完全虚拟化的软来来说，XEN软件占很少资源,VMWare 等其他虚拟化系统实现了完全的虚拟化（它们不必修改使用中的操作系统），但它们仍需要进行实时的机器代码翻译，这会影响性能。 如果你电脑跑两个VMware卡的话，你跑一个VM，然后在VM里的linux里面跑一个XEN，应该会比以前好很多。 介绍就到这里，下面我们开始安装XEN的虚拟机，大家把yum服务器开启吧，我们要用yum服务器安装xen。第一步:yum install xen*rootrhel5 # yum install xen* Loading security plugin Loading rhnplugin plugin Loading installonlyn plugin This system is not registered with RHN. RHN support will be disabled. Setting up Install Process Setting up repositories VT 100% |=| 1.1 kB 00:00 Server 100% |=| 951 B 00:00 Reading repository metadata in from local files primary.xml.gz 100% |=| 9.5 kB 00:00 # 31/31 primary.xml.gz 100% |=| 753 kB 00:00 # 2158/2158 Parsing package install arguments Resolving Dependencies - Populating transaction set with selected packages. Please wait. - Downloading header for xen-devel to pack into transaction set. xen-devel-3.0.3-41.el5.i3 100% |=| 33 kB 00:00 - Package xen-devel.i386 0:3.0.3-41.el5 set to be updated - Downloading header for xen-libs to pack into transaction set. xen-libs-3.0.3-41.el5.i38 100% |=| 29 kB 00:00 - Package xen-libs.i386 0:3.0.3-41.el5 set to be updated - Downloading header for xen to pack into transaction set. xen-3.0.3-41.el5.i386.rpm 100% |=| 86 kB 00:00 - Package xen.i386 0:3.0.3-41.el5 set to be updated - Running transaction check - Processing Dependency: bridge-utils for package: xen - Processing Dependency: libSDL-1.2.so.0 for package: xen - Processing Dependency: xen-hypervisor-abi = 3.1 for package: xen - Processing Dependency: python-virtinst for package: xen - Restarting Dependency Resolution with new changes. - Populating transaction set with selected packages. Please wait. - Downloading header for python-virtinst to pack into transaction set. python-virtinst-0.103.0-3 100% |=| 7.8 kB 00:00 - Package python-virtinst.noarch 0:0.103.0-3.el5 set to be updated - Downloading header for kernel-xen to pack into transaction set. kernel-xen-2.6.18-53.el5. 100% |=| 252 kB 00:00 - Package kernel-xen.i686 0:2.6.18-53.el5 set to be updated - Downloading header for bridge-utils to pack into transaction set. bridge-utils-1.1-2.i386.r 100% |=| 5.0 kB 00:00 - Package bridge-utils.i386 0:1.1-2 set to be updated - Downloading header for SDL to pack into transaction set. SDL-1.2.10-8.el5.i386.rpm 100% |=| 12 kB 00:00 - Package SDL.i386 0:1.2.10-8.el5 set to be updated - Running transaction check - Processing Dependency: libvirt-python >= 0.2.1 for package: python-virtinst - Restarting Dependency Resolution with new changes. - Populating transaction set with selected packages. Please wait. - Downloading header for libvirt-python to pack into transaction set. libvirt-python-0.2.3-9.el 100% |=| 13 kB 00:00 - Package libvirt-python.i386 0:0.2.3-9.el5 set to be updated - Running transaction check - Processing Dependency: libvirt = 0.2.3 for package: libvirt-python - Processing Dependency: libvirt.so.0 for package: libvirt-python - Restarting Dependency Resolution with new changes. - Populating transaction set with selected packages. Please wait. - Downloading header for libvirt to pack into transaction set. libvirt-0.2.3-9.el5.i386. 100% |=| 24 kB 00:00 - Package libvirt.i386 0:0.2.3-9.el5 set to be updated - Running transaction check - Processing Dependency: dnsmasq for package: libvirt -Restarting Dependency Resolution with new changes. - Populating transaction set with selected packages. Please wait. - Downloading header for dnsmasq to pack into transaction set. dnsmasq-2.39-2.el5.i386.r 100% |=| 7.2 kB 00:00 - Package dnsmasq.i386 0:2.39-2.el5 set to be updated - Running transaction check Dependencies Resolved = Package Arch Version Repository Size = Installing: xen i386 3.0.3-41.el5 VT 1.9 M xen-devel i386 3.0.3-41.el5 VT 210 k xen-libs i386 3.0.3-41.el5 Server 137 k Installing for dependencies: SDL i386 1.2.10-8.el5 Server 233 k bridge-utils i386 1.1-2 Server 28 k dnsmasq i386 2.39-2.el5 Server 151 k kernel-xen i686 2.6.18-53.el5 Server 14 M libvirt i386 0.2.3-9.el5 VT 655 k libvirt-python i386 0.2.3-9.el5 VT 63 k python-virtinst noarch 0.103.0-3.el5 VT 63 k Transaction Summary = Install 10 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 18 M Is this ok y/N: y Downloading Packages: (1/10): libvirt-0.2.3-9.e 100% |=| 655 kB 00:00 (2/10): xen-devel-3.0.3-4 100% |=| 210 kB 00:00 (3/10): xen-3.0.3-41.el5. 100% |=| 1.9 MB 00:00 (4/10): python-virtinst-0 100% |=| 63 kB 00:00 (5/10): libvirt-python-0. 100% |=| 63 kB 00:00 (6/10): kernel-xen-2.6.18 100% |=| 14 MB 00:00 (7/10): bridge-utils-1.1- 100% |=| 28 kB 00:00 (8/10): dnsmasq-2.39-2.el 100% |=| 151 kB 00:00 (9/10): xen-libs-3.0.3-41 100% |=| 137 kB 00:00 (10/10): SDL-1.2.10-8.el5 100% |=| 233 kB 00:00 Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing: xen-libs # 1/10 Installing: SDL # 2/10 Installing: dnsmasq # 3/10 Installing: bridge-utils # 4/10 Installing: kernel-xen # 5/10 Installing: xen-devel # 6/10 Installing: libvirt-python # 7/10 Installing: libvirt # 8/10 Installing: xen # 9/10 Installing: python-virtinst # 10/10 Installed: xen.i386 0:3.0.3-41.el5 xen-devel.i386 0:3.0.3-41.el5 xen-libs.i386 0:3.0.3-41.el5 Dependency Installed: SDL.i386 0:1.2.10-8.el5 bridge-utils.i386 0:1.1-2 dnsmasq.i386 0:2.39-2.el5 kernel-xen.i686 0:2.6.18-53.el5 libvirt.i386 0:0.2.3-9.el5 libvirt-python.i386 0:0.2.3-9.el5 python-virtinst.noarch 0:0.103.0-3.el5 Complete! rootrhel5 # 系统会安装这些包: Installing: xen-libs # 1/10 Installing: SDL # 2/10 Installing: dnsmasq # 3/10 Installing: bridge-utils # 4/10 Installing: kernel-xen # 5/10 Installing: xen-devel # 6/10 Installing: libvirt-python # 7/10 Installing: libvirt # 8/10 Installing: xen # 9/10 Installing: python-virtinst # 10/10 第二步：安装图形界面管理工具yum install “virt-manager*” rootrhel5 # yum install virt-manager* Loading security plugin Loading rhnplugin plugin Loading installonlyn plugin This system is not registered with RHN. RHN support will be disabled. Setting up Install Process Setting up repositories Reading repository metadata in from local files Parsing package install arguments Resolving Dependencies - Populating transaction set with selected packages. Please wait. -Downloading header for virt-manager to pack into transaction set. virt-manager-0.4.0-3.el5. 100% |=| 35 kB 00:00 - Package virt-manager.i386 0:0.4.0-3.el5 set to be updated - Running transaction check - Processing Dependency: gnome-python2-gnomekeyring >= 2.15.4 for package: virt-manager - Restarting Dependency Resolution with new changes. - Populating transaction set with selected packages. Please wait. -Downloading header for gnome-python2-gnomekeyring to pack into transaction set. gnome-python2-gnomekeyrin 100% |=| 3.5 kB 00:00 -Package gnome-python2-gnomekeyring.i386 0:2.16.0-1.fc6 set to be updated - Running transaction check Dependencies Resolved = Package Arch Version Repository Size = Installing: virt-manager i386 0.4.0-3.el5 VT 1.3 M Installing for dependencies: gnome-python2-gnomekeyring i386 2.16.0-1.fc6 Server 15 k Transaction Summary = Install 2 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 1.3 M Is this ok y/N: y Downloading Packages: (1/2): virt-manager-0.4.0 100% |=| 1.3 MB 00:00 (2/2): gnome-python2-gnom 100% |=| 15 kB 00:00 Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing: gnome-python2-gnomekeyring # 1/2 Installing: virt-manager # 2/2 Installed: virt-manager.i386 0:0.4.0-3.el5 Dependency Installed: gnome-python2-gnomekeyring.i386 0:2.16.0-1.fc6 Complete! rootrhel5 # 第三步：重新启动，选择带xen的内核选择带xen的内核启动，刚才安装xen的时候，帮我们升级了内核，现在要用支持xen的内核启动 下面我们要安装虚拟机的源文件，我们用nfs提供，先挂载光盘，然后把光盘的内容拷贝到本地的一个目录中。cd /misc/cd cp -r * /var/ftp/pub (-r 递归拷贝)光碟内容比较多，所有会花掉一些时间，我在做yum服务器的时候已经把这步做了，所以我们继续下一步 第四步：使用nfs共享刚才拷贝过来的文件夹rootrhel5 # vim /etc/exports修改nfs配置文件，添加这样一行：/var/ftp/pub/ /24(ro) ，前面是共享的目录，后面是可以访问的网络，ro