rovarga commented on issue #1990:
URL: https://github.com/apache/karaf/issues/1990#issuecomment-3233980547
With plain `apache-karaf-4.4.8.tar.gz` from Maven Central:
```
nite@nitebug : ~$ tar xf apache-karaf-4.4.8.tar.gz
nite@nitebug : ~$ cd apache-karaf-4.4.8
nite@nitebug : ~/apache-karaf-4.4.8$ vim etc/users.properties
nite@nitebug : ~/apache-karaf-4.4.8$ ./bin/karaf
__ __ ____
/ //_/____ __________ _/ __/
/ ,< / __ `/ ___/ __ `/ /_
/ /| |/ /_/ / / / /_/ / __/
/_/ |_|\__,_/_/ \__,_/_/
Apache Karaf (4.4.8)
Hit '<tab>' for a list of available commands
and '[cmd] --help' for help on a specific command.
Hit '<ctrl-d>' or type 'system:shutdown' or 'logout' to shutdown Karaf.
karaf@root()>
```
and in other window:
```
nite@nitebug : ~$ ssh -V
OpenSSH_9.9p1, OpenSSL 3.2.4 11 Feb 2025
nite@nitebug : ~$ ssh -p 8101 karaf@localhost
The authenticity of host '[localhost]:8101 ([::1]:8101)' can't be
established.
RSA key fingerprint is SHA256:pnNq5HjPo+UQC3qh86zsZZkuugqX8zE2DoVtLRuJr4o.
This key is not known by any other names.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '[localhost]:8101' (RSA) to the list of known
hosts.
Password authentication
(karaf@localhost) Password:
__ __ ____
/ //_/____ __________ _/ __/
/ ,< / __ `/ ___/ __ `/ /_
/ /| |/ /_/ / / / /_/ / __/
/_/ |_|\__,_/_/ \__,_/_/
Apache Karaf (4.4.8)
Hit '<tab>' for a list of available commands
and '[cmd] --help' for help on a specific command.
Hit 'system:shutdown' to shutdown Karaf.
Hit '<ctrl-d>' or type 'logout' to disconnect shell from current session.
karaf@root()>
```
and logs show:
```
nite@nitebug : ~/apache-karaf-4.4.8$ tail -n 6 data/log/karaf.log
2025-08-28T17:26:17,470 | INFO |
sshd-SshServer[134e79a6](port=8101)-nio2-thread-1 | OpenSSHKeyPairProvider
| 46 - org.apache.karaf.shell.ssh - 4.4.8 | Creating ssh server private
key at /home/nite/apache-karaf-4.4.8/etc/host.key
2025-08-28T17:26:17,472 | INFO |
sshd-SshServer[134e79a6](port=8101)-nio2-thread-1 | OpenSSHKeyPairGenerator
| 46 - org.apache.karaf.shell.ssh - 4.4.8 | generateKeyPair(RSA)
generating host key - size=2048
2025-08-28T17:26:19,511 | WARN |
sshd-SshServer[134e79a6](port=8101)-nio2-thread-2 | ServerUserAuthService
| 48 - org.apache.sshd.osgi - 2.15.0 |
handleUserAuthRequestMessage(ServerSessionImpl[null@/[0:0:0:0:0:0:0:1]:44964])
Failed (IllegalArgumentException) to authenticate using factory
method=publickey: No verifier located for algorithm=ssh-ed25519
2025-08-28T17:26:20,806 | INFO |
sshd-SshServer[134e79a6](port=8101)-nio2-thread-2 | ServerSessionImpl
| 48 - org.apache.sshd.osgi - 2.15.0 | Session
karaf@/[0:0:0:0:0:0:0:1]:44964 authenticated
2025-08-28T17:26:44,533 | INFO | CM Configuration Updater (Update:
pid=org.ops4j.pax.logging) | EventAdminConfigurationNotifier | 6 -
org.ops4j.pax.logging.pax-logging-log4j2 - 2.3.0 | Sending Event Admin
notification (configuration successful) to org/ops4j/pax/logging/Configuration
2025-08-28T17:26:45,241 | INFO | CM Configuration Updater (Update:
pid=org.ops4j.pax.logging) | EventAdminConfigurationNotifier | 6 -
org.ops4j.pax.logging.pax-logging-log4j2 - 2.3.0 | Sending Event Admin
notification (configuration successful) to org/ops4j/pax/logging/Configuration
```
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