ssh host_key error

[Ernie Luzar]

Robison, Dave wrote:
> On 04/20/16 02:47 PM, Ernie Luzar wrote:
>> Hello list
>>
>> Just completed installing 10.3 from scratch to a empty disk.
>> The first time I tried to remotely ssh into host I got these error messages.
>>
>>  sshd[1347]: error: Could not load host key: /etc/ssh/ssh_host_rsa_key
>>  sshd[1347]: error: Could not load host key: /etc/ssh/ssh_host_dsa_key
>>  sshd[1347]: error: Could not load host key: /etc/ssh/ssh_host_ecdsa_key
>>  sshd[1347]: error: Could not load host key: /etc/ssh/ssh_host_ed25519_key
>>
>>
>> If I remember correctly these keys were populated on the first boot of a newly installed system. Does ssh have some job to populate those keys that I can manually run?
>>
>> Thanks list
>>
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> 
> edit /etc/ssh/sshd_config to reflect which key you want to use. I use rsa.
> 
> # HostKey for protocol version 1
> #HostKey /etc/ssh/ssh_host_key
> # HostKeys for protocol version 2
> HostKey /etc/ssh/ssh_host_rsa_key
> #HostKey /etc/ssh/ssh_host_dsa_key
> #HostKey /etc/ssh/ssh_host_ecdsa_key
> #HostKey /etc/ssh/ssh_host_ed25519_key
> 
> Then do, as root:
> 
> ssh-keygen -t rsa -b 4096
> 
> I used 4096 because I am paranoid.
> 
> then:
> 
> service sshd restart
> 
> should work
> 
> 
> 

The ssh-keygen command is the hint I needed.
Used   ssh-keygen -A
which builds all the host keys by default.
That fixed the problem.

Thanks