openstack在线调整云主机大小
有时虚拟机创建后发现虚拟机规格太小，满足不了业务需求。于是需要在线拉伸虚拟机的规格。修改controller和各个computer节点的nova.cnf文件，打开下面两个参数
# vim /etc/nova/nova.conf
# vim /etc/nova/nova.conf
allow_resize_to_same_host=True
scheduler_default_filters=RetryFilter,AvailabilityZoneFilter,RamFilter,ComputeFilter,ComputeCapabilitiesFilter,ImagePropertiesFilter,ServerGroupAntiAffinityFilter,ServerGroupAffinityFilter
重启服务
# systemctl restart openstack-nova-api.service \
openstack-nova-consoleauth.service openstack-nova-scheduler.service \
openstack-nova-conductor.service openstack-nova-novncproxy.service
#systemctl restart libvirtd.service openstack-nova-compute.service
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