SSH Config

nano /root/.ssh/config

.ssh/config:

Host storagebox
    Hostname u12345.your-storagebox.de
    Port 23
    User u12345
    IdentityFile /root/.ssh/id_admin_ed25519
    ODER
    IdentityFile /config/ssh_keys/id_admin_ed25519
    JE NACHDEM WO DER SSH-KEY LIEGT!

wenn dannn noch WARNING UNPROTECTED PRIVATE KEY FILE Meldung kommt, einfach

chown 600 /config/ssh_keys/id_admin_ed25519

Weiteres Beispiel für eine .ssh/config:

Host gitlab.blentwurg.com
  PreferredAuthentications publickey
  IdentityFile ~/.ssh/gitlab.pub

Host git.MEINEDOMAIN.com
  HostName git.MEINEDOMAIN.com
  Port 222
  User git
  IdentityFile ~/.ssh/id_rsa

oder 

Host hz-01
    HostName hetzner-01.DOMAIN.de
    IdentityFile ~/.ssh/id_pl-admin_ed25519
    User root

Host hz-02
    HostName hetzner-02.DOMAIN.de
    IdentityFile ~/.ssh/id_pl-admin_ed25519
    User root

Host hz-03
    HostName hetzner-03.DOMAIN.de
    IdentityFile ~/.ssh/id_pl-admin_ed25519
    User root

Host mini-01-hws
    HostName 192.168.200.11
    IdentityFile ~/.ssh/id_rsa_eiketower.ppk
    User pl-admin

Host mini-02-fbs
    HostName 10.53.1.5
    IdentityFile ~/.ssh/id_rsa_eiketower.ppk
    User pl-admin

Host mini-03-sps
    HostName 10.26.1.5
    IdentityFile ~/.ssh/id_rsa_eiketower.ppk
    User pl-admin

vorher

chmod 600 ~/.ssh/id_rsa_eiketower.ppk
chmod 600 ~/.ssh/id_pl-admin_ed25519