Elastic Compute Service:SSH connection issues

Troubleshooting methods

What do I do if I cannot connect to a Linux instance?

Common issues and solutions

Common instance logon issues and solutions

• Workbench-based logon issues

  • What do I do if a timeout error occurs when I use Workbench to connect to a Linux instance?

  • What do I do if the error message "Logon failed because password-based logon is disabled in the operating system" appears in Workbench?

  • What do I do if I am prompted with an incorrect username or password when I use Workbench to connect to a Linux instance?

  • What do I do if the "DefaultConnectFuture[root@/xxx.xxx.xx.xxx:22]: Failed (AnnotatedConnectException) to execute: Connection refused: /xxx.xxx.xx.xxx:22" error message appears when I use Workbench to connect to a Linux instance?

• SSH client-based logon issues

  • What do I do if the "User root not allowed because not listed in" error message appears when I connect to a Linux instance by using an SSH command?

  • What do I do if the "Permission denied, please try again" error message appears when I connect to a Linux instance from an SSH client?

  • What do I do if the "ssh_exchange_identification: read: Connection reset by peer" error message appears when I connect to a Linux instance from an SSH client?

  • What do I do if the "No supported authentication methods available (server sent: publickey, gssapi-keyex, gssapi-with-mic)" error message appears when I connect to a Linux ECS instance by using a third-party SSH client?

  • What do I do if the "Too many authentication failures" error message appears when I connect to an instance by using a third-party SSH client?

  • What do I do if the "Host key verification failed" error message appears when I log on to a Linux instance by using SSH?

  • What do I do if the "error: Unable to load host key: /etc/ssh/ssh_host_rsa_key" error message appears when I connect to a Linux by using an SSH client?

  • What do I do if the "Maximum amount of failed attempts was reached" error message appears when I connect to a Linux ECS instance by using an SSH client?

  • What do I do if the "could not set limit for 'nofile': Operation not permitted" error message appears?

  • What do I do if an error message, such as "This account is currently not available", appears when I connect to a Linux ECS instance by using SSH?

  • What do I do if the "could not set limit for 'nofile': Operation not permitted" error message appears?

  • What do I do if the "fatal: mm_request_send: write: Broken pipe" error message appears when the SSH service does not run as expected due to viruses?

• SFTP client-based logon issues

  • What do I do if the "Received unexpected end-of-file from SFTP server" error message appears when I log on to a Linux instance by using an SFTP tool?

• Other logon issues

  • What do I do if I cannot connect to an ECS instance by using SSH or Workbench due to incorrect port configurations?

  • What do I do if I cannot connect to a Linux instance because SSH is not started?

  • What do I do if I cannot log on to a Linux instance after I enable PAM?

  • What do I do if I cannot use the root user and the new password to log on to a Linux instance after I change the password of the root user?

SSH startup issues and solutions

• What do I do if I cannot connect to an ECS instance due to an sshd configuration error?

• What do I do if the "error while loading shared libraries" error message appears when I start the SSH service on a Linux ECS instance?

• What do I do if an error message that contains "fatal: Cannot bind any address" appears when I start the SSH service on a Linux ECS instance?

• What do I do if an error message that contains "bad configuration options" appears when I start the SSH service on a Linux ECS instance?

• What do I do if the "Failed to start OpenSSh server daemon" error message appears when I start the SSH service?

• What do I do if the "must be owned by root and not group or world-writable" error message appears when I start the SSH service on a Linux ECS instance?

• What do I do if I cannot start the SSH service on a Linux ECS instance and a message that contains "main process exited, code=exited" appears?

Other issues and solutions

• How do I keep processes running on a Linux ECS instance after an SSH client is disconnected?

• What do I do if the logon is stuck when I connect to a Linux instance?

• What do I do if the SSH logon or data transfer is slow on a Linux ECS instance on which UseDNS is enabled for SSH?

• What do I do when I cannot change the password of a Linux instance and the "passwd: Module is unknown" error message appears?