What Are the Login Requirements for ECSs?

Linux

• Ensure that the ECS has an EIP bound (only required for SSH logins).
  SSH logins are available for Linux ECSs only. You can use a remote login tool, for example, use PuTTY to log in to your ECS. In such a case, the ECS must have an EIP bound.

  • Verify that the ECS has an EIP bound.

    For details, see Assigning an EIP and Binding It to an ECS.

  • Check whether the EIP bound to the ECS can be pinged.
    • If you use a public IP address, see Why Can't an EIP Be Pinged? for troubleshooting.
    • If you use a private IP address, see Why Does Communication Fail Between Two ECSs in the Same VPC or Packet Loss Occur When They Communicate?
  More information:

  • For a Linux ECS authenticated using a key pair:
    • For the first login, use an SSH key. For details, see Login Using an SSH Key.
    • For a non-first login, if you want to use the remote login function (VNC) provided by the management console, log in to the ECS using the SSH key and set the password.
  • For a key-pair-authenticated ECS, using a private key file to obtain its login password will fail because Cloud-Init may fail to inject the password.