KVM 虚拟机 调整内存与CPU

1、关闭虚拟机

virsh shutdown kvm109


#调整前
[root@0830 ~]# virsh dominfo kvm109
Id:             -
Name:           kvm109
UUID:           658ba60c-505a-435a-967b-276d84620930
OS Type:        hvm
State:          shut off
CPU(s):         1
Max memory:     1048576 KiB
Used memory:    1048576 KiB
Persistent:     yes
Autostart:      disable
Managed save:   no
Security model: none
Security DOI:   0

2、编辑虚拟机

virsh edit kvm109

kvm109
658ba60c-505a-435a-967b-276d84620930
2097152      #调整内存至2G
2097152  #调整内存至2G
2   #调整CPU核数为2

3、重新定义使配置文件生效

virsh define /etc/libvirt/qemu/kvm109.xml

4、启动虚拟机

virsh start kvm109

#调整后
[root@0830 ~]# virsh dominfo kvm109
Id:             3
Name:           kvm109
UUID:           658ba60c-505a-435a-967b-276d84620930
OS Type:        hvm
State:          running
CPU(s):         2              #CPU 为2核
CPU time:       12.3s
Max memory:     2097152 KiB    #内存 为2G
Used memory:    2097152 KiB
Persistent:     yes
Autostart:      disable
Managed save:   no
Security model: none
Security DOI:   0