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https://issues.apache.org/jira/browse/KAFKA-18960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17934183#comment-17934183
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Chia-Ping Tsai commented on KAFKA-18960:
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we can update the ubuntu version used by Vagrant from trusty64 to jammy64,
allowing Vagrant use other key type by default. Or we can configure Vagrantfile
with "config.ssh.key_type = :ed25519" to explicitly use other acceptable key
type
> the default type of ssh key used by vagrant is disabled by OpenSSH 8.8
> ----------------------------------------------------------------------
>
> Key: KAFKA-18960
> URL: https://issues.apache.org/jira/browse/KAFKA-18960
> Project: Kafka
> Issue Type: Improvement
> Reporter: Chia-Ping Tsai
> Assignee: Chia-Ping Tsai
> Priority: Major
>
> The default SSH key type used by the agent is RSA, which has been disabled by
> OpenSSH 8.8 [0]. This results in issues (see following log) on modern
> distributions, as their OpenSSH versions typically exceed 8.8
> {code:java}
> self._set_ssh_client()
> File
> "/home/tjwu/kafka/tests/venv/lib/python3.10/site-packages/ducktape/cluster/remoteaccount.py",
> line 35, in wrapper
> return method(self, *args, **kwargs)
> File
> "/home/tjwu/kafka/tests/venv/lib/python3.10/site-packages/ducktape/cluster/remoteaccount.py",
> line 189, in _set_ssh_client
> client.connect(
> File
> "/home/tjwu/kafka/tests/venv/lib/python3.10/site-packages/paramiko/client.py",
> line 439, in connect
> self._auth(
> File
> "/home/tjwu/kafka/tests/venv/lib/python3.10/site-packages/paramiko/client.py",
> line 770, in _auth
> raise saved_exception
> File
> "/home/tjwu/kafka/tests/venv/lib/python3.10/site-packages/paramiko/client.py",
> line 706, in _auth
> self._transport.auth_publickey(username, key)
> File
> "/home/tjwu/kafka/tests/venv/lib/python3.10/site-packages/paramiko/transport.py",
> line 1642, in auth_publickey
> return self.auth_handler.wait_for_response(my_event)
> File
> "/home/tjwu/kafka/tests/venv/lib/python3.10/site-packages/paramiko/auth_handler.py",
> line 259, in wait_for_response
> raise e
> paramiko.ssh_exception.AuthenticationException: Authentication failed.
> {code}
> [0] https://www.openssh.com/txt/release-8.8
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