How to change the RSA key of the server?

Question

linux

Such a situation, a person quit but at the same time pdsh was previously configured for authorization to servers using the rsa key, how can you now generate new rsa keys so that authorization via pdsh does not take place from this computer?

Answer 1

[email protected]: ~# ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N ''
Generating public/private rsa key pair.
/etc/ssh/ssh_host_rsa_key already exists.
Overwrite (y/n)? y
Your identification has been saved in /etc/ssh/ssh_host_rsa_key.
Your public key has been saved in /etc/ssh/ssh_host_rsa_key.pub.
The key fingerprint is:
98:95:ff:e0:32:99:f7:67:73:51:97:c3:58:5f:62:06 [email protected]
[13:38] cmd# :115
[email protected]: ~# ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key -N ''
Generating public/private dsa key pair.
/etc/ssh/ssh_host_dsa_key already exists.
Overwrite (y/n)? y
Your identification has been saved in /etc/ssh/ssh_host_dsa_key.
Your public key has been saved in /etc/ssh/ssh_host_dsa_key.pub.
The key fingerprint is:
ca:35:6f:87:61:a6:ab:5c:3b:37:c5:a0:9c:6f:1d:30 [email protected]