# Live Migration Fails With Error "Failed to connect to remote libvirt URI

## Problem

Live migration of an instance fails with the following error observed in the */var/log/pf9/ostackhost.log* on the source host.

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```none
ERROR nova.virt.libvirt.driver [-] [instance: 4c36cc41-3b5f-47f1-952b-44e8485c811e] Live Migration failure: operation failed: Failed to connect to remote libvirt URI qemu+tls://10.85.150.24/system?no_verify=1&pkipath=/etc/pf9/certs/libvirt: Unable to read TLS confirmation: Input/output error: libvirt.libvirtError: operation failed: Failed to connect to remote libvirt URI qemu+tls://10.85.150.24/system?no_verify=1&pkipath=/etc/pf9/certs/libvirt: Unable to read TLS confirmation: Input/output error
```

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## Environment

* Platform9 Managed OpenStack - All versions
* Nova
* Libvirt

## Cause

The *libvirt* service is not able to setup a TLS connection with the destination host because the certificates were rotated recently. This is an upstream limitation and has been fixed in *libvirt* v6.2.0.

## Resolution

1. Restart the *libvirtd* service on the destination host where the instance was being migrated.

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# sudo service libvirtd restart
```

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## Additional Information

Starting **v6.2.0**, the *libvirtd* service restart will not be needed as per the *libvirt*[release notes](https://libvirt.org/news.html).


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