openstack 虚拟机实例迁移(openstack的主要组件及功能)

10.20.1.181 nova-api controller

10.20.1.182　nova-compute compute1

10.20.1.183 nova-compute　　compute2

实例迁移，需要nova用户在nova-compute免密钥互通

10.20.1.182 上操作
修改成bash登录
[root@compute1 ~]# usermod -s /bin/bash nova
[root@compute1 ~]# passwd nova
[root@compute1 ~]# su - nova
-bash-4.2$  ssh-keygen -t rsa
-bash-4.2$  ssh-copy-id  nova@10.20.1.182

-bash-4.2$  ssh-copy-id  nova@10.20.1.183

10.20.1.183bash nova
[root@compute2 ~]# passwd nova
[root@compute2 ~]# su -t rsa
-bash-4.2$  ssh-copy-id  nova@10.20.1.182

-bash-4.2$  ssh-copy-id  nova@10.20.1.183

主机变更成了 compute1