openstack热迁移有多种方式,下面配置block-migration方式,即以拷贝的方式实现热迁移,这种方式配置简单,但需要从源计算节点拷贝文件到目标计算节点,会比较耗时。而使用共享存储的方式,把所有的/var/lib/nova/instances下的虚拟机信息放到一块,比如放到控制节点,所有的计算使用nfs节点挂载该目录。这种方式迁移时不需要拷贝虚拟机文件,但所有的计算机节点的文件集中一起,管理不方便,配置方法见官方文档。
下面是block-migration方式配置:
首先在所有的计算节点中的nova.conf中增加live_migration_flag=VIR_MIGRATE_UNDEFINE_SOURCE,VIR_MIGRATE_PEER2PEER,VIR_MIGRATE_LIVE,VIR_MIGRATE_UNSAFE
开启热迁移功能。
然后需要配置versh免密码连接,修改/etc/libvirt/libvirtd.conf
2022年8月17日 21:45
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