Dear,<br> <br>I encountered some problems when I used the virsh to start my virtual machines. I had tried some ways but I still couldn&#39;t solve it.<br>Please help me, thanks.<br><br>error messages :<br><br><span style="color: rgb(255, 0, 0);">virsh # start controlnode</span><br style="color: rgb(255, 0, 0);">
<span style="color: rgb(255, 0, 0);">error: Failed to start domain controlnode</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);">error: internal error process exited while connecting to monitor: bind(unix:/var/lib/libvirt/qemu/controlnode.monitor): Permission denied</span><br style="color: rgb(255, 0, 0);">
<span style="color: rgb(255, 0, 0);">chardev: opening backend &quot;socket&quot; failed</span><br><br> <br><br>