安装openstack 时 遇见的一些问题及解决方法！，openstack一些问题

安装openstack 时 遇见的一些问题及解决方法！，openstack一些问题

问题1 ：

 service libvirtd status no connection driver available for qemu:///system

参考 ：http://echorequest.info/?p=70
解决办法：    modify /etc/libvirt/libvirt.conf setting to uri_default = "qemu:///system".

问题2 ：

    ERROR nova.virt.libvirt.driver [-] Connection to libvirt failed: no connection driver available for qemu:///system

解决办法：  yum update device-mapper
 

问题3 ：

failed to load module /usr/lib64/libvirt/connection-driver/libvirt_driver_storage.so /usr/lib64/libvirt/connection-driver/libvirt_driver_storage.so: symbol dm_task_get_info_with_deferred_remove, version Base not defined in file libdevmapper.so.1.02 with link time reference
 failed to load module /usr/lib64/libvirt/connection-driver/libvirt_driver_qemu.so /usr/lib64/libvirt/connection-driver/libvirt_driver_qemu.so: undefined symbol: virStorageFileCreate

参考：Solutin: http://www.adminz.in/2015/04/libvirtd-error-after-package-update.html

           Solution: http://lists.openstack.org/pipermail/openstack/2014-December/010628.html

解决：/etc/nova/nova.conf compute_driver = libvirt.LibvirtDriver

问题4 ：

nova.openstack.common.threadgroup HypervisorUnavailable: Connection to the hypervisor is broken on host

解决：export LIBVIRT_DEFAULT_URI=qemu:///system

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