PRE-INSTALL kvm相关安装包及其作用 qemu-kvm主要的KVM程序包 python-virtinst创建虚拟机所需要的命令行工具和程序库 virt-managerGUI虚拟机管理工具 virt-top虚拟机统计命令 virt-viewerGUI连接程序，连接到已配置好的虚拟机 libvirtC语言工具包，提供libvirt服务 libvirt-client为虚拟客户机提供的C语言工具包 virt-install基于libvirt服务的虚拟机创建命令 bridge-utils创建和管理桥接设备的工具 INSTALL [root@master~]#yuminstallbridge-utilstunctlvirt-managervirt-viewerkvmkmod-kvmqemulibvirtpython-virtinstacpid-y #查看是否加载kvm模块 [root@master~]#lsmod|grepkvm kvm_intel1385670 kvm4411191kvm_intel #如果没有这两条，可以用"modprobekvm"加载； #相关命令"insmod;rmmod;modinfo" #启动libvirtd [root@master~]#systemctlstartlibvirtd;systemctlenablelibvirtd [root@master~]#systemctllist-unit-files|greplibvirtd libvirtd.serviceenabled NETWORKCONFIGURATION #修改网卡文件ens33 [root@master~]#cd/etc/sysconfig/network-scripts/ [root@masternetwork-scripts]#echo"BRIDGE=br0">>ifcfg-ens33#在ifcfg-e**原网卡文件中增加"BRIDGE=br0" #新建网桥文件ifcfg-br0(网桥名称),增加内容如下 [root@masternetwork-scripts]#viifcfg-br0 ************************************************* DEVICE=br0 TYPE="Bridge"#大小写敏感，所以必须是Bridge BOOTPROTO="dhcp" ONBOOT="yes" DELAY="0" STP="yes"#这一行是来启动STP,和brctl命令行出来的结果有关 ************************************************* #重启NetworkManager及network服务： [root@masternetwork-scripts]#systemctlrestartNetworkManager #当你手动修改了网卡文件后，需要重启NetworkManager服务来重新接管网络配置 #网卡配置文件和NetworkManager配置冲突时，解决方案:｛1、重启NetworkManager;2、关闭NetworkManager｝ [root@masternetwork-scripts]#systemctlrestartnetwork [root@masternetwork-scripts]#ipa#ip命令用来查看和管理ip信息 1:lo:<LOOPBACK,UP,LOWER_UP>mtu65536qdiscnoqueuestateUNKNOWN link/loopback00:00:00:00:00:00brd00:00:00:00:00:00 inet127.0.0.1/8scopehostlo valid_lftforeverpreferred_lftforever inet6::1/128scopehost valid_lftforeverpreferred_lftforever 2:ens33:<BROADCAST,MULTICAST,LOWER_UP>mtu1500qdiscpfifo_fastmasterbr0stateUPqlen1000 link/ether00:0c:29:61:5c:1dbrdff:ff:ff:ff:ff:ff 3:virbr0:<NO-CARRIER,BROADCAST,UP>mtu1500qdiscnoqueuestateDOWN link/ether52:54:00:b6:45:5bbrdff:ff:ff:ff:ff:ff inet192.168.122.1/24brd192.168.122.255scopeglobalvirbr0 valid_lftforeverpreferred_lftforever 4:virbr0-nic:<BROADCAST,MULTICAST>mtu1500qdiscpfifo_fastmastervirbr0stateDOWNqlen500 link/ether52:54:00:b6:45:5bbrdff:ff:ff:ff:ff:ff 6:br0:<BROADCAST,LOWER_UP>mtu1500qdiscnoqueuestateUP link/ether00:0c:29:61:5c:1dbrdff:ff:ff:ff:ff:ff inet192.168.0.170/24brd192.168.0.255scopeglobaldynamicbr0 valid_lft11979secpreferred_lft11979sec inet6fe80::20c:29ff:fe61:5c1d/64scopelink valid_lftforeverpreferred_lftforever 7:vnet0:<BROADCAST,LOWER_UP>mtu1500qdiscpfifo_fastmasterbr0stateUNKNOWNqlen500 link/etherfe:54:00:cb:63:b2brdff:ff:ff:ff:ff:ff inet6fe80::fc54:ff:fecb:63b2/64scopelink valid_lftforeverpreferred_lftforever #查看网桥连接 [root@masternetwork-scripts]#brctlshow#brctl是一个网桥连接管理命令 bridgenamebridgeidSTPenabledinterfaces#如果上面不设置STP=yes，这里就会显示no br08000.000c29615c1dyesens33 vnet0 virbr08000.525400b6455byesvirbr0-nic CLOSESELINUX [root@masternetwork-scripts]#setenforce0 [root@masternetwork-scripts]#getenforce Permissive [root@masternetwork-scripts]#vi/etc/selinux/config ****************************************** SELINUX=permissive#修改配置文件使其永久生效 ****************************************** CREATEAVM [root@master~]#mkdir-p/data/kvm [root@master~]#virt-install--networkbridge=br0--namecentos73--ram2048--vcpus1--diskpath=/data/kvm/centos73.img,size=16--graphicsnone--location'http://mirrors.163.com/centos/7.3.1611/os/x86_64/'--extra-args="console=tty0console=ttyS0,115200" #详细每个参数的意义可以查看扩展资料 #安装过程会让你选择textmode还是vnc,选择textmode继续安装吧 #如果网络会有问题的话，尽量选择用--cdrom/path/to/centos7.iso #virt-install--networkbridge=br0--namecentos73--ram2048--vcpus1--diskpath=/data/kvm/centos73.img,115200"
