Broken SSH connection for Esxi 6.7 | Nutanix Community
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While upgrading the ESXi host. Users can come to the issue of 

  • "Installing the bundle on the hypervisor" when the CVM (Controller VM) is trying to SSH into the host; or
  • The SSH connection between the CVM and the host may break after a successful upgrade.

The problem when checked from genesis.out log on Controller CVM shows unable to SSH

2018-06-18 15:22:25 INFO node_manager.py:4930 Setting up key based SSH access to host hypervisor for the first time...2018-06-18 15:22:25 INFO hypervisor_ssh.py:32 Trying to access hypervisor with provided key...2018-06-18 15:22:25 INFO hypervisor_ssh.py:40 Failed.2018-06-18 15:22:25 INFO hypervisor_ssh.py:44 Trying to access hypervisor with provided password...2018-06-18 15:22:25 INFO hypervisor_ssh.py:52 Failed2018-06-18 15:22:25 ERROR node_manager.py:4935 Failed to set up key based SSH access to hypervisor, most likely because we do not have the correct password cached. Please run fix_host_ssh command manually to fix this problem.

User would want to check the KB article where the issue is known and problem occur due to bad SSH configuration which is outdated

You can either disable fips mode, edit the sshd config and after this SSH will work with host

 

More information

https://portal.nutanix.com/page/documents/kbs/details?targetId=kA00e000000LJtcCAG

 

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