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ParallelSSH / parallel-ssh

Asynchronous parallel SSH client library.
https://parallel-ssh.org
GNU Lesser General Public License v2.1
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connection failing when connecting to newer ssh server #397

Open jrishel opened 3 months ago

jrishel commented 3 months ago

Discussed in https://github.com/ParallelSSH/parallel-ssh/discussions/396

Originally posted by **jrishel** August 23, 2024 I'm using ParallelSSH on a RHEL7 host (python 3.6, sourcing ParallelSSH 2.12.0 from pypi. It works connecting to my RHEL7 and RHEL8 hosts, but on RHEL9, the connection fails. at the OS level, I can use SSH keys to connect without issue. the error the RHEL9 ssh server indicates is: ` sshd[986124]: userauth_pubkey: key type ssh-rsa not in PubkeyAcceptedAlgorithms [preauth]` Is there a way to tell pssh.clients to start using newer algo keys? I'd rather update that than go to my RHEL9 hosts and tell them to start accepting legacy algo keys? I did test that setting RHEL9 to legacy crypto policy lets the SSHClient connect, but that's not ideal.