虚拟机在从物理 Red Hat 计算机转换后不引导 (2093497) Symptoms 免责声明：本文为 Virtual machine does not boot after being converted from a physical Red Hat machine (1002402) 的翻译版本。尽管我们会不断努力为本文提供最佳翻译版本，但本地化的内容可能会过时。有关最新内容，请参见英文版本。 Resolution 出现此问题的原因是，操作系统的 ramdisk 映像不包含适用于为虚拟机配置的虚拟 SCSI 适配器的驱动程序或模块。这些模块之所以不在 ramdisk 映像中，是因为该映像最初是在不使用此硬件的系统中创建的。必须将现有 ramdisk 映像替换为包含正确驱动程序的 ramdisk 映像。Converter 3.0.x 不支持 Linux 操作系统热克隆，也不支持对新虚拟硬件生成的虚拟机进行配置。仅支持不进行任何配置的冷克隆。而 vCenter Converter 4.0 支持某些 Linux 操作系统的热克隆和配置，包括 Red Hat。有关支持版本的列表，请参阅相关手册。验证下面每个故障排除步骤是否适合您的环境。每个步骤提供相关说明或文档链接，用于消除可能的原因和采取必要的补救措施。这些步骤按照最合适的顺序排序，以隔离问题并确定正确的解决方法。请勿跳过任何一个步骤。 注意： 如果您在以下任...

Vmware P2V conversion failed with showing grub prompt  We tried to convert one of our physical machine running fedora15, using vmware tools. It started and failed exactly at 99% showing the following error“An error occured during the conversion GrubInstaller:InstallGrub: /usr/lib/vmware-converter/installGrub.sh failed with return code:1, and message: FATAL: kernel too old Error running vmware-updateGrub.sh through chroot into /mnt/p2v-src-root”Solution1. Boot the virtual machine with the fedora15 DVD and select the ‘rescue’ option.2. Once it boots chroot the /mnt/sysimage.3. While giving fdsik -l, im getting the following error“cannot open /proc/partitions”Also, mount too get some errors like unable to read etc., So exited the /mnt/sysimage by “exit” command4. Now, I gave the followingmount -o bind /proc /mnt/sysimagemount -o bind /dev /mnt/sysimageIf we didn’t mount the second one /dev, we will get blank when we give fdisk -l. Only “/dev/null” is present, nothin...

Linux P2VIntroductionP2V Linux migrations are a combination of science, art and luck.P2V stands for Physical to Virtual. In other words, it is the process or procedure of moving a running system (operating system and everything installed) from a physical machine to a virtual machine.This page describes some of the (un)usual steps necessary to convert a Linux system into a virtual machine running under VMware ESXi Server. The same steps should mostly apply to other virtual platorms/hypervisors like VirtualBox, KVM and QEMU.The focus of this P2V explanation is on Red Hat and CentOS guests as they are not only supported, but benefit from kudzu and rescue disk capability built-in. Other distributions can of course be converted but the exact steps will vary.So, let's get started.What to use (or not)The following software products claim to do P2V, but in fact do not seem to support Linux, so YMMV Virtual Server Migration Toolkit EZP2VThese products do support Linux in some way... VMware Con...

Resolving Linux boot issues after P2V with VMware ConverterRecently I had to deal with migrating SuSE Enterprise Linux servers from the old environment to the Vblock. Customer had a number of physical servers and XEN instances that needed to be moved to the new vSphere environment.While VMware Converter 5 does a good job live-cloning the existing Linux servers, sometimes you have to use the Cold Clone boot CD if the physical server uses software RAID (and then boot VM from the broken mirror side), or sometimes the resulting VM does not boot because of issues with bootloader.For the most migrations I’ve used VMware Converter 5.0. One thing you need to do right away is to modify the config for VMware Converter to enable the root login and keep the failed helper VM. Enable useSourcePasswordInHelperVm flag and disable powerOffHelperVm. See http://kb.vmware.com/kb/1008209 for details.Now you should have the result of your failed conversion preserved, and should be able boot the VM to...

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CentOS 服务器一键安装/配置模板教程 服务系统：CentOS 5/6 32/64位 (支持蜂巢Centos 6.7)推荐宽带：10M 以上更新时间：2016-03-12授权码：sbwml.cn（脚本仅供娱乐，禁止商业用途）1) 使用 root 账号登录 Linux 服务器。2）执行一键安装脚本（需要密钥）：如果提示出错 bash: wget: command not found 请执行 yum -y install wget3) 根据终端返回提示完成安装配置。4) 安装完成后，复制终端输出的地址并下载链接中的配置文件。 5) 解压下载的压缩包，提取OpenVPN.ovpn。CA证书：ca.crtTLS密钥：ta.key成品配置文件：OpenVPN.ovpn

Using NAT for container with private IPsUsually you supply public IP addresses to your containers. Sometimes you don't want to do it (lack of IPs, etc.). This article describes how to use private IP addresses for containers.目录1 Prerequisites1.1 IP conntracks1.2 IP forwarding1.3 Enable iptables in OpenVZ 7/Virtuozzo 72 How to create the container and attach network properties to it3 How to provide access for container to the Internet3.1 Save new iptables rules3.2 Firewall3.3 Test4 How to provide access from Internet to a container5 External LinksPrerequisitesMake sure that below prerequisites are met, otherwise it won't work for you!IP conntracksIP connection tracking should be enabled for CT0. For recent OpenVZ kernels (2.6.9 and later) connection tracking for CT0 is enabled by default, but it can be disabled by vzctl 4.7 and newer (because it has a negative impact on venet performance, see OpenVZ Bug #2755). So, make sure there is NO line likeoptions ip_conntrack ip_conntrack_disab...

安装过程中不使用图形界面的新建分区，就不会有100M分区的问题。后续安装只要在命令行新建的分区中进行就可以。（注：用图形界面新建分区，会自动产生一个100M隐藏分区）。具体操作如下：安装Windows2008R2进行到【开始安装】界面的时候，不点击【开始安装】，也不点击【修复计算机】，直接按快捷键“Shift+F10”打开CMD命令行，然后输入>diskpart.exe进入diskpart命令窗口。然后执行以下命令：>list disk     【查看硬盘编号，大小，有U盘的话注意辨别】>select disk 0【选择硬盘编号，使之处于选中焦点状态】>create partition primary size=25064 【创建主分区，后面的数字是大小，单位MB】>format fs=ntfs quick 【格式化主分区，格式为ntfs格式】>create partition extended 【创建扩展分区，如果已有，在图形界面中错误的删掉了系统C盘，这步可不操作】>exit 【退出程序】关闭CMD命令窗口，开始安装，就可以避免100M隐藏分区了。注意，不要在图形界面删除分区再新建，本人经常这样做，但在windows2008R2等新系统就不行了，这样会产生100M隐藏分区。后面的自动安装就可以了。

服务器端安装openvpn在这里http://swupdate.openvpn.org/community/releases/openvpn-install-2.3.4-I004-i686.exe下载openvpn在服务器安装时记得勾选红框中的两个选项安装完成后编辑C:\Program Files (x86)\OpenVPN\easy-rsa目录下的vars.bat.sample文件，修改如下内容然后切换到如下目录cd /D C:\Program Files (x86)\OpenVPN\easy-rsainit-configvarsclean-all生成根证书:build-cabuild-dh生成服务端证书：build-key-server server  生成客户端证书build-key client1将生成的（C:\Program Files (x86)\OpenVPN\easy-rsa\keys 目录下）ca.crt,dh1024.pem,server.crt,server.key复制到C:\Program Files (x86)\OpenVPN\config下在C:\Program Files (x86)\OpenVPN\config创建server.ovpn文件编辑该文件写入一下内容右mode serverlocal 118.184.23.131   port 1194proto udpdev tunca ca.crtcert server.crtkey server.key # This file should be kept secretdh dh1024.pemserver 172.16.1.0 255.255.255.0ifconfig-pool-persist ipp.txtpush "route 0.0.0.0 0.0.0.0"     push "redirect-gateway def1 bypass-dhcp&qu...