Miscellaneous advanced administration topics

The following topics provide information about miscellaneous advanced administration tasks:

  • Changing IP addresses and host names
    GPFS™ assumes that IP addresses and host names remain constant. In the rare event that such a change becomes necessary or is inadvertently introduced by reinstalling a node with a disk image from a different node for example, follow the steps in this topic.
  • Enabling a cluster for IPv6
    For newly created clusters, if any of the specified node interfaces on the mmcrcluster command resolves to an IPv6 address, the cluster is automatically enabled for IPv6. For existing IPv4-based clusters, follow the applicable procedure described in this section.
  • Using multiple token servers
    Distributed locking, allowing GPFS to maintain a consistent view of the file system, is implemented using token-based lock management. Associated with every lockable object is a token.
  • Exporting file system definitions between clusters
    You can export a GPFS file system definition from one GPFS cluster to another.
  • GPFS port usage
    The nodes in a GPFS cluster communicate with each other using the TCP/IP protocol. The port number used by the main GPFS daemon (mmfsd) is controlled with the tscTcpPort configuration parameter. The default port number is 1191.
  • Securing the IBM Spectrum Scale system using firewall
    The IBM Spectrum Scale™ system is an open system where the customer can interact with the system through other third-party interfaces like MMC, web applications, and so on. The customer also has root access to the system just like any Linux server administrator. Firewalls that are associated with open systems are specific to deployments, operating systems, and it varies from customer to customer. It is the responsibility of the system administrator or Lab Service (LBS) to set the firewall accordingly; similar to what Linux distributions do today. This section provides recommendations to set up a firewall to secure the IBM Spectrum Scale protocol nodes.
  • Start of changeLogging file system activitiesEnd of change
    File system activities such as file creation, deletion, and renaming might need to be logged. Varonis DatAdvantage software can be used to log file activity within IBM Spectrum Scale.
  • Supported web browser versions and web browser settings for GUI
    To access the management GUI, you must ensure that your web browser is supported and has the appropriate settings enabled.
Parent topic: Administering