OEM 13c: Agent Installation using EM console failed with error "Unable to negotiate key exchange for server host key algorithms"
(Doc ID 2974098.1)
Last updated on NOVEMBER 30, 2023
Applies to:
Enterprise Manager Base Platform - Version 13.5.0.0.0 and laterInformation in this document applies to any platform.
Symptoms
<gc_inst>/em/EMGC_OMS1/sysman/agentpush/<date_time>/applogs/<hostname>_deploy.log
2023-08-30_17-03-51:INFO:Error Message: PROV-16011: Unable to negotiate key exchange for server host key algorithms (client: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss / server: ssh-ed25519)
2023-08-30_17-03-51:INFO:Error Level : -1
2023-08-30_17-03-51:INFO:Cause : null
2023-08-30_17-03-51:INFO:Full Message: Unable to negotiate key exchange for server host key algorithms (client: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss / server: ssh-ed25519)
2023-08-30_17-03-51:INFO:Message: Unable to negotiate key exchange for server host key algorithms (client: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss / server: ssh-ed25519)
2023-08-30_17-03-51:INFO:AuthFailMsg to check password Auth fail keys Auth cancel
2023-08-30_17-03-51:INFO: SSH Connect Failure for user oracle on node <IP Address>
2023-08-30_17-03-51:INFO: Jsch Validation Failed Problem :SSH connection check failed Recommendation: Ensure that SSH daemon (sshd) on the target host is able to respond to login requests on the provided sshd port 22.Ensure the provided user name and password or ssh keys are correct.Ensure that the property PasswordAuthentication is set to yes in the SSHD configuration file (sshd_config) on the remote host.
2023-08-30_17-03-51:INFO:Breaking since the jsch validation has failed
2023-08-30_17-03-51:INFO:InvocationTargetException Exception
2023-08-30_17-03-51:INFO:Error Level : -1
2023-08-30_17-03-51:INFO:Cause : null
2023-08-30_17-03-51:INFO:Full Message: Unable to negotiate key exchange for server host key algorithms (client: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss / server: ssh-ed25519)
2023-08-30_17-03-51:INFO:Message: Unable to negotiate key exchange for server host key algorithms (client: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss / server: ssh-ed25519)
2023-08-30_17-03-51:INFO:AuthFailMsg to check password Auth fail keys Auth cancel
2023-08-30_17-03-51:INFO: SSH Connect Failure for user oracle on node <IP Address>
2023-08-30_17-03-51:INFO: Jsch Validation Failed Problem :SSH connection check failed Recommendation: Ensure that SSH daemon (sshd) on the target host is able to respond to login requests on the provided sshd port 22.Ensure the provided user name and password or ssh keys are correct.Ensure that the property PasswordAuthentication is set to yes in the SSHD configuration file (sshd_config) on the remote host.
2023-08-30_17-03-51:INFO:Breaking since the jsch validation has failed
2023-08-30_17-03-51:INFO:InvocationTargetException Exception
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |
| References |