How to fully recover from outage?

We had an unpredictable power outage and I’ve followed Openstack Managing Power Events guide

Despite juju status shows all green, Instances are messed up, some of them with kernel panics then are useless, now I’ve deleted all of them and network is not working properly, we can’t access through ssh(and yes network group has 22 port tcp open) but we can ping . I’ve noticed that cirros image take a long time to start now with some libvirt errors but after that I can login using horizon console and can access to the network.

How can I sort this?