openstack雲主機冷遷移

1:開啓nova計算節點之間互信

冷遷移須要nova計算節點之間使用nova用戶互相免密碼訪問python

默認nova用戶禁止登錄,開啓全部計算節點的nova用戶登陸shell。shell

usermod -s /bin/bash nova

su - nova

ssh-keygen -t rsa

#生成密鑰

cp -fa id_rsa.pub authorized_keys

將公鑰發送給其餘計算節點的nova用戶的/var/lib/nova/.ssh目錄下,注意權限和所屬組bash

2:修改控制節點nova.conf

vi /etc/nova/nova.conf

[DEFAULT]

scheduler_default_filters=RetryFilter,AvailabilityZoneFilter,RamFilter,DiskFilter,ComputeFilter,ComputeCapabilitiesFilter,ImagePropertiesFilter,ServerGroupAntiAffinityFilter,ServerGroupAffinityFilter

 

重啓openstack-nova-scheduler

systemctl restart openstack-nova-scheduler.service

3:修改全部計算節點

vi /etc/nova/nova.conf

[DEFAULT]

allow_resize_to_same_host = True

 

重啓openstack-nova-compute

systemctl restart openstack-nova-compute.service

4:dashboard上進行操做

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