VM live migration issue - api error (status = 400: api error (status = 596: ))
invalid@exam
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2026-06-26
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via Proxmox Support Forum
Tried the live VM migration between clusters, but got the error:
Code:
api error (status = 400: api error (status = 596: ))
What is required to be configured in each cluster to perform these type of migrations? Root ssh keys authorized? Firewall issues? Each server in a cluster uses a Let's Encrypt SSL certificate.
Proxmox Staff Member
Staff member
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- Jun 3, 2019
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Can the clusters talk directly to each other?
Thanks for the tip. We added the IPs of the clusters to the firewall, and it worked! Just had to map the server names to the private network in /etc/hosts to force the migration over the PVN, and use detailed mapping, and everything went as expected. 
I ve the same problem can you please explain how to do ?
Hey @chtourouy,
we ran into the same issue, make sure that all nodes from the source cluster can talk to all nodes from the destination cluster over the configured Web Interface port (default 8006, see Wiki https://pve.proxmox.com/wiki/Ports for details) and vice versa.
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