ssh -p 29418 [email protected] fails

SSB asked:

I am setting up jenkins and gerrit on the same host, and one thing I need is to have gerrit and jenkins communicate with each other.

When I add the ip address of the host (say 10.25.26.27) then I am not able to get the gerrit trigger to connect to 10.25.26.27. To debug, I tried:


ssh -p 29418 [email protected] -v

Due diligence with ssh-keygen and copying the id_rsa.pub has been done.

The output of the above command is:

debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 10.25.26.27 [10.25.26.27] port 29418.
debug1: Connection established.
debug1: identity file /home/user/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_rsa-cert type -1
debug1: identity file /home/user/.ssh/id_dsa type 2
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_dsa-cert type -1
debug1: identity file /home/user/.ssh/id_ecdsa type 3
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.10
debug1: Remote protocol version 2.0, remote software version GerritCodeReview_3.2.2 (APACHE-SSHD-2.4.0)
debug1: no match: GerritCodeReview_3.2.2 (APACHE-SSHD-2.4.0)
debug1: Authenticating to 10.25.26.27:29418 as 'user'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: ecdh-sha2-nistp256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: aes128-ctr MAC: [email protected] compression: none
debug1: kex: client->server cipher: aes128-ctr MAC: [email protected] compression: none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:y/+sp8pk2QcG5EXarPQs3zZrmvbf23ZKp8BF6gtZHEY
debug1: Host '[10.25.26.27]:29418' is known and matches the ECDSA host key.
debug1: Found key in /home/user/.ssh/known_hosts:2
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 4294967296 blocks
debug1: pubkey_prepare: ssh_get_authentication_socket: No such file or directory
debug1: Skipping ssh-dss key /home/user/.ssh/id_dsa - not in PubkeyAcceptedKeyTypes
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/user/.ssh/id_rsa
debug1: Authentications that can continue: publickey
debug1: Offering ECDSA public key: /home/user/.ssh/id_ecdsa
debug1: Authentications that can continue: publickey
debug1: Trying private key: /home/user/.ssh/id_ed25519
debug1: No more authentication methods to try.
Permission denied (publickey).

However, when I try the same from another ip address, say 10.24.25.29, I can connect successfully.

I need to run both gerrit and jenkins from the same host. Appreciate help on debugging this issue.

My answer:


The server didn’t accept any of your keys. Check that you have authorized one or more of your ssh keys on the server.

Further, you cannot use the DSA key id_dsa because the server does not accept this key type. It must be one of the other key types.


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