Fedora 40
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OpenSSH : Use SSH-Agent2024/04/25

 
Use SSH-Agent to automate inputting Passphrase of SSH Key-Pair authentication.
[1] This is some example to use SSH-Agent.
# run SSH-Agent

[fedora@node01 ~]$
eval $(ssh-agent)

Agent pid 1366
# add passphrase

[fedora@node01 ~]$
ssh-add

Enter passphrase for /home/fedora/.ssh/id_ecdsa:
Identity added: /home/fedora/.ssh/id_ecdsa (fedora@dlp.srv.world)
# confirm

[fedora@node01 ~]$
ssh-add -l

256 SHA256:JplBYWJv++klrHHHV6RACnEgMw8YcqJqpxWMQI3sS9c fedora@dlp.srv.world (ECDSA)
# verify to connect without inputting passphrase

[fedora@node01 ~]$
ssh dlp.srv.world hostname

dlp.srv.world
# stop SSH-Agent
# if not execute it, SSH-Agent process remains even if you logout System, be careful

[fedora@node01 ~]$
eval $(ssh-agent -k)

Agent pid 1366 killed
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