Configuring a storage cluster

When the procedure described in Setting up each storage node is complete, control ports of the storage nodes or spare nodes are enabled, enabling communication confirmation by Ping from the controller node to control ports of the storage nodes or spare nodes.

• When you connect to a storage node using SFTP, the node allows only minimum remote operations for directories and files from the SFTP client.

  In interactive mode after the storage node is connected, only the following sftp commands can be used for remote directories and files:

  • pwd

  • ls

  • cd

  • get

  • reget

  • put

  • reput

  • rm

• When the controller node connects to the representative storage node by SFTP connection, the following message might be output.

  Output message*:

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
  @    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
  IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
  Someone could be eavesdropping on you right now (man-in-the-middle attack)!
  It is also possible that a host key has just been changed.
  The fingerprint for the ECDSA key sent by the remote host is
  xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx.
  Please contact your system administrator.
  Add correct host key in /home/user/.ssh/known_hosts to get rid of this message.
  Offending ECDSA key in /home/user/.ssh/known_hosts:xxxx
    remove with: ssh-keygen -f "/home/user/.ssh/known_hosts" -R xxx.xxx.xxx.xxx
  ECDSA host key for xxx.xxx.xxx.xxx has changed and you have requested strict checking.
  Host key verification failed.

  * This is an example of the message that is output when the sftp command is run. The message that is output might differ depending on the SFTP client that you use.

  This message notification occurs when the SFTP client detects that the controller node in use has previously connected to another physical server of the same IP address. Take action according to the message output by the SFTP client, and then retry SFTP connection.

To return to the Top menu screen, select Back to top, and then select OK.

To return to the Top menu screen, select Back to top, and then select OK.

In this procedure, the Top menu screen is not displayed when login is successful.

If the Top menu screen is displayed upon successful login, you might not have logged in to the representative storage node. In such a case, select Logout to log out, and then log in to the correct representative storage node.

When the progress for Stage 7/8 of the Execute setup (Progress and result) screen is displayed, the following information is shown to allow real-time monitoring of the processing status.

• [/]: A rotating spinner. Indicates that processing is in progress.
• Elapsed Time: Elapsed time since processing began.
• Typical Time: Estimated standard completion time.
• Timeout: Maximum wait time.

The spinner's rotation confirms that processing is proceeding normally. When Stage 8/8 progress is displayed, this information is hidden.

In addition to the time required for storage node startup, the following external factors might increase or decrease the processing time. If processing takes a long time, verify that there are no problems with the following items:

• Network communication status (communication status between the storage nodes)
• Server performance status (including performance degradation due to temperature rise of storage nodes)
• Server hardware configuration (such as storage node processor or memory capacity)

You can no longer perform the following operations when setup of a storage cluster is complete:

• Login to the console interface as the setup user

• Connection to storage nodes via SFTP

The menu that is displayed when you log in to the console interface also changes. For details, see Operating the console interface in the VSP One SDS Block and SDS Cloud System Administration.