yum install qemu-kvm qemu-kvm-tools virt-manager libvirt virt-install -y |
1 2 3 | [root@localhost ~]# grep -E '(vmx|svm)' /proc/cpuinfo flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc aperfmperf pni pclmulqdq vmx ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm arat epb pln pts dtherm tpr_shadow vnmi ept vpid fsgsbase smep#如果没有内容则不支持 |
1 2 | [root@localhost ~]# qemu-img create -f raw /opt/Centos-7.3-x86_64.raw 10GFormatting '/opt/Centos-7.3-x86_64.raw', fmt=raw size=10737418240 |
1 2 | systemctl enable libvirtd.serviceservice libvirtd start |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | [root@localhost ~]# service libvirtd statusRedirecting to /bin/systemctl status libvirtd.service● libvirtd.service - Virtualization daemon Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled) Active: active (running) since 五 2017-05-26 14:41:33 CST; 7min ago Docs: man:libvirtd(8) http://libvirt.org Main PID: 912 (libvirtd) CGroup: /system.slice/libvirtd.service ├─ 912 /usr/sbin/libvirtd ├─2441 /sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr... └─2449 /sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr...5月 26 14:41:24 localhost.localdomain systemd[1]: Starting Virtualization daemon...5月 26 14:41:33 localhost.localdomain systemd[1]: Started Virtualization daemon.5月 26 14:41:38 localhost.localdomain dnsmasq[2441]: started, version 2.66 cachesize 1505月 26 14:41:38 localhost.localdomain dnsmasq[2441]: compile time options: IPv6 GNU-getopt DBus no-i18n IDN DH...auth5月 26 14:41:38 localhost.localdomain dnsmasq-dhcp[2441]: DHCP, IP range 192.168.122.2 -- 192.168.122.254, leas... 1h5月 26 14:41:38 localhost.localdomain dnsmasq[2441]: reading /etc/resolv.conf5月 26 14:41:38 localhost.localdomain dnsmasq[2441]: using nameserver 192.168.106.2#535月 26 14:41:38 localhost.localdomain dnsmasq[2441]: read /etc/hosts - 2 addresses5月 26 14:41:38 localhost.localdomain dnsmasq[2441]: read /var/lib/libvirt/dnsmasq/default.addnhosts - 0 addresses5月 26 14:41:38 localhost.localdomain dnsmasq-dhcp[2441]: read /var/lib/libvirt/dnsmasq/default.hostsfileHint: Some lines were ellipsized, use -l to show in full. |
1 2 3 4 | [root@localhost ~]# dd if=/dev/cdrom of=/opt/CentOs-7.3.iso记录了8554496+0 的读入记录了8554496+0 的写出4379901952字节(4.4 GB)已复制，137.034 秒，32.0 MB/秒 |
1 2 3 4 5 6 7 | [root@localhost ~]# virt-install --name CentOS-7.3-x86_64 --virt-type kvm --ram 1024 --cdrom=/opt/CentOs-7.3.iso --disk path=/opt/Centos-7.3-x86_64.raw --network network=default --graphics vnc,listen=0.0.0.0 --noautoconsole开始安装......创建域...... | 0 B 00:00:01 域安装仍在进行。您可以重新连接到控制台以便完成安装进程。[root@localhost ~]# |
VNC连接：
CentOS-7安装的时候让网卡名称默认变成eth0的方法：
按TAB键，后面加入：
net.ifnames=0 biosdevname=0
1 2 3 4 5 | [root@localhost qemu]# virsh list --all Id 名称 状态---------------------------------------------------- - CentOS-7.3-x86_64 关闭 - CentOS-7.3-x86_64_1 关闭 |
1 2 | [root@localhost qemu]# virsh start CentOS-7.3-x86_64_1域 CentOS-7.3-x86_64_1 已开始 |
1 2 3 4 5 6 7 8 9 10 11 | 改CPU：[root@localhost qemu]# pwd/etc/libvirt/qemu[root@localhost qemu]# virsh edit CentOS-7.3-x86_64_1 <vcpu placement='auto' current="1">4</vcpu>重启：[root@localhost qemu]# virsh shutdown CentOS-7.3-x86_64_1[root@localhost qemu]# virsh start CentOS-7.3-x86_64_1[root@localhost qemu]# virsh setvcpus CentOS-7.3-x86_64_1 2 --live #热添加或热减少 |
1 2 3 4 5 6 7 8 9 | 改内存：virsh edit CentOS-7.3-x86_64_1 <memory unit='KiB'>4048576</memory>重启：[root@localhost qemu]# virsh shutdown CentOS-7.3-x86_64_1[root@localhost qemu]# virsh start CentOS-7.3-x86_64_1virsh qemu-monitor-command CentOS-7.3-x86_64_1 --hmp --cmd balloon 500 #热添加或热减少 |