JSchException: Auth fail on Ubuntu 22.04

Question

I recently changed my cloud server OS from Ubuntu 20.04 to 22.04. After that, remote upload jar task fail during gradle build using org.hidetake.ssh with below message.

com.jcraft.jsch.JSchException: Auth fail

I guess it could be a RSA problem which is deprecated on Ubuntu 22.04 but I can't find how to resolve it.

The config I'm used with ssh.run task is below. I would really appreciate if anyone has idea.

remotes {
    myServer {
        host = 'x.x.x.x'
        port = 22
        user = 'ubuntu'
        identity = file('d:/a.pem') 
        knownHosts = allowAnyHosts
    }
}

Answer 1

确实很有可能服务器需要rsa-sha2。 JSch 不支持它。由于 JSch 似乎不再更新，它很可能永远不会更新。

JSch 的一个分支可以做到这一点： https:
//github.com/mwiede/jsch

rsa-sha2另一个（显然不太安全）选项是通过将deprecated ssh-rsa添加到 来重新配置服务器，使其不再需要PubkeyAcceptedAlgorithms.