KVM虛擬化以內存、CPU調整

增大虛擬內存、增長虛擬CPU個數

增大虛擬機內存、增長虛擬機CPU個數須要首先關機虛擬機

1. 關閉虛擬機

virsh shutdown WMS-test-1

2. 編輯虛擬機配置文件
   修改內存大小、vcpu個數

#virsh edit WMS-test-1
<domain type='kvm'> <name>WMS-test-1</name> <uuid>67f9c89c-fcb2-6cd3-27c1-de7799d1db92</uuid> <memory unit='KiB'>8192000</memory> <currentMemory unit='KiB'>8192000</currentMemory> <vcpu placement='static'>4</vcpu>

3. 從配置文件中啓動虛擬機

virsh create /etc/libvirt/qemu/WMS-test-1.xml

4. 查看當前內存大小

[root@mryx-kvm1 soft]# virsh dominfo WMS-test-1|grep memory Max memory: 8192000 KiB Used memory: 8192000 KiB

5. 調小虛擬機內存
   調小虛擬機內存無需重啓

virsh setmem WMS-test-1 1024000

6. 驗證內存與CPU

[root@mryx-kvm1 soft]# virsh dominfo WMS-test-1|grep memory Max memory: 8192000 KiB Used memory: 1024000 KiB [root@mryx-kvm1 soft]# virsh dominfo WMS-test-1|grep CPU CPU(s): 4 CPU time: 25.4s