InfoScale™ 9.0 Storage Foundation Cluster File System High Availability Configuration and Upgrade Guide - Solaris
- Section I. Introduction to SFCFSHA
- Introducing Storage Foundation Cluster File System High Availability
- Section II. Configuration of SFCFSHA
- Preparing to configure
- Preparing to configure SFCFSHA clusters for data integrity
- About planning to configure I/O fencing
- Setting up the CP server
- Planning your CP server setup
- Installing the CP server using the installer
- Configuring the CP server cluster in secure mode
- Setting up shared storage for the CP server database
- Configuring the CP server using the installer program
- Configuring the CP server manually
- Verifying the CP server configuration
- Configuring SFCFSHA
- Overview of tasks to configure SFCFSHA using the product installer
- Starting the software configuration
- Specifying systems for configuration
- Configuring the cluster name
- Configuring private heartbeat links
- Configuring the virtual IP of the cluster
- Configuring SFCFSHA in secure mode
- Configuring a secure cluster node by node
- Adding VCS users
- Configuring SMTP email notification
- Configuring SNMP trap notification
- Configuring global clusters
- Completing the SFCFSHA configuration
- About the License Audit Tool
- Verifying and updating licenses on the system
- Configuring SFDB
- Configuring SFCFSHA clusters for data integrity
- Setting up disk-based I/O fencing using installer
- Setting up server-based I/O fencing using installer
- Setting up non-SCSI-3 I/O fencing in virtual environments using installer
- Setting up majority-based I/O fencing using installer
- Enabling or disabling the preferred fencing policy
- Performing an automated SFCFSHA configuration using response files
- Performing an automated I/O fencing configuration using response files
- Configuring I/O fencing using response files
- Response file variables to configure disk-based I/O fencing
- Sample response file for configuring disk-based I/O fencing
- Configuring CP server using response files
- Response file variables to configure server-based I/O fencing
- Sample response file for configuring server-based I/O fencing
- Response file variables to configure non-SCSI-3 I/O fencing
- Sample response file for configuring non-SCSI-3 I/O fencing
- Response file variables to configure majority-based I/O fencing
- Sample response file for configuring majority-based I/O fencing
- Manually configuring SFCFSHA clusters for data integrity
- Setting up disk-based I/O fencing manually
- Setting up server-based I/O fencing manually
- Preparing the CP servers manually for use by the SFCFSHA cluster
- Generating the client key and certificates manually on the client nodes
- Configuring server-based fencing on the SFCFSHA cluster manually
- Configuring CoordPoint agent to monitor coordination points
- Verifying server-based I/O fencing configuration
- Setting up non-SCSI-3 fencing in virtual environments manually
- Setting up majority-based I/O fencing manually
- Section III. Upgrade of SFCFSHA
- Planning to upgrade SFCFSHA
- About the upgrade
- Supported upgrade paths
- Transitioning between the InfoScale products
- Considerations for upgrading SFCFSHA to 9.0 on systems configured with an Oracle resource
- Preparing to upgrade SFCFSHA
- Considerations for upgrading REST server
- Using Install Bundles to simultaneously install or upgrade full releases (base, maintenance, rolling patch), and individual patches
- Performing a full upgrade of SFCFSHA using the installer
- Performing a rolling upgrade of SFCFSHA
- Performing a phased upgrade of SFCFSHA
- About phased upgrade
- Performing a phased upgrade using the product installer
- Moving the service groups to the second subcluster
- Upgrading the operating system on the first subcluster
- Upgrading the SFCFSHA stack on the first subcluster
- Preparing the second subcluster
- Activating the first subcluster
- Upgrading the operating system on the second subcluster
- Upgrading the second subcluster
- Completing the phased upgrade
- Performing an automated SFCFSHA upgrade using response files
- Upgrading Volume Replicator
- Upgrading VirtualStore
- Upgrading SFCFSHA using Boot Environment upgrade
- Performing post-upgrade tasks
- Planning to upgrade SFCFSHA
- Section IV. Post-configuration tasks
- Section V. Configuration of disaster recovery environments
- Section VI. Adding and removing nodes
- Adding a node to SFCFSHA clusters
- About adding a node to a cluster
- Before adding a node to a cluster
- Adding a node to a cluster using the Veritas InfoScale installer
- Adding the node to a cluster manually
- Starting Veritas Volume Manager (VxVM) on the new node
- Configuring cluster processes on the new node
- Setting up the node to run in secure mode
- Starting fencing on the new node
- After adding the new node
- Configuring Cluster Volume Manager (CVM) and Cluster File System (CFS) on the new node
- Configuring the ClusterService group for the new node
- Adding a node using response files
- Configuring server-based fencing on the new node
- Adding nodes to a cluster that is using authentication for SFDB tools
- Updating the Storage Foundation for Databases (SFDB) repository after adding a node
- Sample configuration file for adding a node to the cluster
- Removing a node from SFCFSHA clusters
- About removing a node from a cluster
- Removing a node from a cluster
- Modifying the VCS configuration files on existing nodes
- Modifying the Cluster Volume Manager (CVM) configuration on the existing nodes to remove references to the deleted node
- Removing the node configuration from the CP server
- Removing security credentials from the leaving node
- Updating the Storage Foundation for Databases (SFDB) repository after removing a node
- Sample configuration file for removing a node from the cluster
- Adding a node to SFCFSHA clusters
- Section VII. Configuration and Upgrade reference
- Appendix A. Installation scripts
- Appendix B. Configuration files
- Appendix C. Configuring the secure shell or the remote shell for communications
- About configuring secure shell or remote shell communication modes before installing products
- Manually configuring passwordless ssh
- Setting up ssh and rsh connection using the installer -comsetup command
- Setting up ssh and rsh connection using the pwdutil.pl utility
- Restarting the ssh session
- Enabling and disabling rsh for Solaris
- Appendix D. High availability agent information
- Appendix E. Sample SFCFSHA cluster setup diagrams for CP server-based I/O fencing
- Appendix F. Reconciling major/minor numbers for NFS shared disks
- Appendix G. Configuring LLT over UDP
- Using the UDP layer for LLT
- Manually configuring LLT over UDP using IPv4
- Broadcast address in the /etc/llttab file
- The link command in the /etc/llttab file
- The set-addr command in the /etc/llttab file
- Selecting UDP ports
- Configuring the netmask for LLT
- Configuring the broadcast address for LLT
- Sample configuration: direct-attached links
- Sample configuration: links crossing IP routers
- Using the UDP layer of IPv6 for LLT
- Manually configuring LLT over UDP using IPv6
About coordination points
Coordination points provide a lock mechanism to determine which nodes get to fence off data drives from other nodes. A node must eject a peer from the coordination points before it can fence the peer from the data drives. SFCFSHA prevents split-brain when vxfen races for control of the coordination points and the winner partition fences the ejected nodes from accessing the data disks.
Note:
Typically, a fencing configuration for a cluster must have three coordination points. Arctera also supports server-based fencing with a single CP server as its only coordination point with a caveat that this CP server becomes a single point of failure.
The coordination points can either be disks or servers or both.
Coordinator disks
Disks that act as coordination points are called coordinator disks. Coordinator disks are three standard disks or LUNs set aside for I/O fencing during cluster reconfiguration. Coordinator disks do not serve any other storage purpose in the SFCFSHA configuration.
You can configure coordinator disks to use Volume Manager's Dynamic Multi-pathing (DMP) feature. Dynamic Multi-pathing (DMP) allows coordinator disks to take advantage of the path failover and the dynamic adding and removal capabilities of DMP. So, you can configure I/O fencing to use DMP devices. I/O fencing uses SCSI-3 disk policy that is dmp-based on the disk device that you use.
With the emergence of NVMe as a high-performance alternative to SCSI3 for storage connectivity, numerous storage vendors are now introducing NVMe storage arrays.
Furthermore, with the introduction of the NVMe 2.0 specification, multipathing and PGR are fully supported for NVMe storage. If the underlying storage array supports NVMe PGR feature, those NVMe LUNs can also be used as coordinator disks.
Note:
The dmp disk policy for I/O fencing supports both single and multiple hardware paths from a node to the coordinator disks. If few coordinator disks have multiple hardware paths and few have a single hardware path, then we support only the dmp disk policy. For new installations, Arctera only supports dmp disk policy for IO fencing even for a single hardware path.
See the Storage Foundation Administrator's Guide.
Coordination point servers
The coordination point server (CP server) is a software solution which runs on a remote system or cluster. CP server provides arbitration functionality by allowing the SFHA cluster nodes to perform the following tasks:
Self-register to become a member of an active SFCFSHA cluster (registered with CP server) with access to the data drives
Check which other nodes are registered as members of this active SFCFSHA cluster
Self-unregister from this active SFCFSHA cluster
Forcefully unregister other nodes (preempt) as members of this active SFCFSHA cluster
In short, the CP server functions as another arbitration mechanism that integrates within the existing I/O fencing module.
Note:
With the CP server, the fencing arbitration logic still remains on the SFCFSHA cluster.
Multiple SFCFSHA clusters running different operating systems can simultaneously access the CP server. TCP/IP based communication is used between the CP server and the SFCFSHA clusters.