openstack热迁移配置注意事项

1.libvirt相关配置文件

配置virsh免密码连接，修改/etc/libvirt/libvirtd.conf

listen_tls = 0

listen_tcp = 1

tcp_port = "16509"

listen_addr = "172.16.201.8"  

auth_tcp = "none"

修改/etc/sysconfig/libvirtd

LIBVIRTD_CONFIG=/etc/libvirt/libvirtd.conf

LIBVIRTD_ARGS="--listen"

2. 通过如下命令检测计算节点之间连接是否正常

在compute1节点上：

virsh -c qemu+tcp://compute2/system

在compute2节点上

virsh -c qemu+tcp://compute1/system

3.不要修改nova的instances_path，会导致Unable to open file: /home/instances/a3…e1/console.log: Permission denied

具体参见：https://ask.openstack.org/en/question/112912/consolelog-permission-error-in-libvirt-after-changing-instances_path-in-novaconf/