virt-manager 安装xen domU时出现无法连接libvirt情况？

补充：是在vmware上安装的centos7，利用centos7搭建了xen，想利用virt-manager 安装 domU,找的网上教程一步步设置，在设置新连接的时候，错误显示如下：

无法 recv 数据：Warning: Permanently added 'XXXXX' (ECDSA) to the list of known hosts.

Authentication failed.: Connection reset by peer

确认在远程主机中正在

运行 'libvirtd' 守护进程。

Libvirt URI is: xen+ssh://root@XXXXXX/

Traceback (most recent call last):

  File "/usr/share/virt-manager/virtManager/connection.py", line 862, in _do_open

    self._backend.open(self._do_creds_password)

  File "/usr/share/virt-manager/virtinst/connection.py", line 161, in open

    open_flags)

  File "/usr/lib64/python2.7/site-packages/libvirt.py", line 105, in openAuth

    if ret is None:raise libvirtError('virConnectOpenAuth() failed')

libvirtError: 无法 recv 数据：Warning: Permanently added 'XXXXX' (ECDSA) to the list of known hosts.

Authentication failed.: Connection reset by peer

编辑一下hosts文件。把'XXXXX' 这个ip加入允许列表

检查账号密码是否正确

https://blog.csdn.net/bill20100829/article/details/112489025

libvirt -d 启动一下服务

说错了，是 systemctl start libvirtd

您可能需要注销并重新登录

假设/etc/libvirt/libvirtd.conf具有：

# Set the UNIX domain socket group ownership. This can be used to
# allow a 'trusted' set of users access to management capabilities
# without becoming root.
#
# This is restricted to 'root' by default.
unix_sock_group = "libvirtd"

# Set the UNIX socket permissions for the R/O socket. This is used
# for monitoring VM status only
#
# Default allows any user. If setting group ownership, you may want to
# restrict this too.
unix_sock_ro_perms = "0777"

# Set the UNIX socket permissions for the R/W socket. This is used
# for full management of VMs
#
# Default allows only root. If PolicyKit is enabled on the socket,
# the default will change to allow everyone (eg, 0777)
#
# If not using PolicyKit and setting group ownership for access
# control, then you may want to relax this too.
unix_sock_rw_perms = "0770"

如果您的用户是libvirtd组的成员，它应该可以工作。

$ cat /etc/group|grep $USER
vagrant:x:1000:
libvirtd:x:116:ubuntu,vagrant

如果您的用户不在组中，您需要添加它：

$ sudo usermod -a -G libvirtd $USER

如果您的用户已经在/etc/group中的组中，请检查组的输出：

$ groups
vagrant libvirtd

如果您没有看到libvirtd，您需要退出并重新登录。

补充一下问题，当我使用virt-manager连接时 会弹出需要我安装openssh-askpass相关内容？