Miscellaneous advanced administration topics

The following topics provide information about miscellaneous advanced administration tasks:

Changing IP addresses or host names of cluster nodes
Enabling a cluster for IPv6
Using multiple token servers
Exporting file system definitions between clusters
IBM Storage Scale port usage

Changing IP addresses or host names of cluster nodes
IBM Storage Scale assumes that the IP addresses and host names of cluster nodes remain constant. In the rare event that a change is necessary, 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.
IBM Storage Scale port usage
The nodes in an IBM Storage Scale 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.
IBM Storage Scale GUI port usage
You can enable the IBM Storage Scale Management GUI to read new HTTP and HTTPS ports to avoid conflict during the use of third-party applications.
Securing the IBM Storage Scale system using firewall
The IBM Storage 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 Storage Scale protocol nodes.
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