mkdir /domU 1.创建虚拟机映像 dd if=/dev/zero of=xen.img bs=1M count=16000 dd if=/dev/zero of=xen2.img bs=1M count=16000 mkfs -t ext3 xen.img mkfs -t ext3 xen2.img mount -o loop /domU/xen.img /mnt cp -ax /{bin,dev,etc,lib,lib64,opt,root,sbin,usr,var} /mnt mkdir /mnt/{home,proc,selinux,srv,sys,tmp} 创建swap盘 mkswap /slview/swap1.img vi /mnt/etc/fstab /dev/hda1 / ext3 defaults 1 1 tmpfs /dev/shm tmpfs defaults,size=1024m 0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults 0 0 proc /proc proc defaults 0 0 /dev/sdg swap swap defaults 0 0 ---edit network vi /mnt/etc/sysconfig/network ---edit ifcfg-eth0 vi /mnt/etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 -----gen initrd mkinitrd -v -f --fstab /mnt/etc/fstab --with xenblk \ --with xennet --preload xenblk --preload xennet \ initrd-2.6.18-194.el5xen.wd.img `uname -r` umount /mnt ---在/etc/inittab co:2345:respawn:/sbin/agetty xvc0 9600 vt100-nav >init q >ln -s /dev/console /dev/xvc0 ---创建内网网桥 vi ifcfg-xenbr2 ----编辑虚拟机配置文件 name="oradb1" 网桥配置: 修改 Xend 配置文件 /etc/xen/xend-config.sxp ,取消下面两行的注释: (network-script network-bridge) (vif-script vif-bridge) 使用brctl show来查看网桥 DomU的config中设置vif = ['bridge=xenbr0'] 存储配置 [root@db6 xen]# cat oralinux name = "oravm1" kernel = "/boot/vmlinuz-2.6.18-194.el5xen" ramdisk = "/boot/initrd-2.6.18-194.el5xen.wd.img" memory = "256" vcpus = 2 vif = [ 'ip=192.168.1.140,bridge=xenbr0','ip=192.168.100.140,bridge=xenbr1' ] disk = [ 'file:/domU/xen.img,hda1,w','file:/domU/sdb.img,sdb,w!','file:/domU/sdc.img,sdc,w!','phy:/dev/mapper/oradata1,sdn,w!' ] root = "/dev/hda1 ro " ------------------------------------------------------虚拟机----------------- 强制多虚拟机共享存储 phy:/dev/sda,sda,w! 加叹号 需要让xend为两块网卡创建bridge,需要修改/etc/xen/xend-config.sxp,将(network-script 'network-bridge') 改为: (network-script 'my_network_script') my_network_script是我们自己的脚本,创建/etc/xen/scripts/my_network_script内容如下: #!/bin/sh dir=$(dirname "$0") "$dir/network-bridge" "$@" vifnum=0 netdev=eth0 bridge=xenbr0 "$dir/network-bridge" "$@" vifnum=1 netdev=eth1 bridge=xenbr1 将my_network_script加上执行权限: chmod a+x /etc/xen/scripts/my_network_script 重启服务器,可以用ifconfig看到xend创建的4个网络接口 可以看到虚拟交换机上的连接如下: 编辑虚拟机配置文件: Error: Device 2048 (vbd) could not be connected. Failed to find an unused loop device Error: Device 2064 (vbd) could not be connected. losetup -r /dev/loop8 /domU/sdb.img failed >losetup -a 查看loop设备使用情况 再卸载 loop 模块 rmmod loop >vi /etc/modprobe.conf options loop max_loop=16 再重新加载 loop 模块检查是否生效 modprobe loopdmesg | grep loop # 应当能见到 loop: loaded (max 16 devices) 最后建立 loop 设备文件 ls -d /dev/loop* mknod -m0660 /dev/loop9 b 7 8 chown root:disk /dev/loop9 mknod loop8 b 7 8 mknod loop9 b 7 9 Q: ADDRCONF(NETDEV_UP): vif1.0: link is not ready A: 将/dev/sda1改为/dev/hda1 Q: 使用vnc报以下错误 A: 用root账号执行下列命令既可 Q:fdisk分区表无法保存 Q:mkrootdev: expected fs options Q: /sbin/hwclock: error while loading shared libraries: libaudit.so.0: cannot open shared object file: Permission denied A: 关闭selinux |
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