Logging In to a Node

Before you log in to a node using SSH, ensure that the SSH port (22 by default) is enabled in the security group of the node. For details, see Configuring Security Group Rules.
Before you log in to a node (an ECS) using SSH through the Internet, ensure that the ECS already has an EIP bound.
Only login to a running ECS is allowed.
Only the user root can log in to a Linux server.

You can log in to an ECS in either of the following modes:

Management console (VNC)
If an ECS has no EIP, log in to the ECS console and click Remote Login in the same row as the ECS.

For details, see Login Using VNC.
SSH
This mode applies only to ECSs running Linux. Usually, you can use a remote login tool, such as PuTTY, Xshell, and SecureCRT, to log in to your ECS. If none of the remote login tools can be used, log in to the ECS console and click Remote Login in the same row as the ECS to view the connection status and running status of the ECS.
- You can use either an SSH key or SSH password for login. For details, see Login Using an SSH Key and Login Using an SSH Password
- When you use the Windows OS to log in to a Linux node, set Auto-login username to root.
- The CCE console does not support node OS upgrade. Do not upgrade the node OS using the yum update command. Otherwise, the container networking components will be unavailable. For details on how to manually restore the container network, see What Can I Do If the Container Network Becomes Unavailable After yum update Is Used to Upgrade the OS?

**Table 1** Linux ECS login modes
EIP Binding	On-Premises OS	Connection Method
Yes	Windows	Use a remote login tool, such as PuTTY or Xshell. SSH password authentication: Login Using an SSH Password SSH key authentication: Login Using an SSH Key
Yes	Linux	Run commands. SSH password authentication: Login Using an SSH Password SSH key authentication: Login Using an SSH Key
Yes/No	Windows/Linux	Remote login using the management console: Login Using VNC