Cluster Server 7.3.1 Configuration and Upgrade Guide - Solaris
- Section I. Configuring Cluster Server using the script-based installer
- I/O fencing requirements
- Preparing to configure VCS clusters for data integrity
- About planning to configure I/O fencing
- Setting up the CP server
- Configuring VCS
- Configuring a secure cluster node by node
- Verifying and updating licenses on the system
- Configuring VCS clusters for data integrity
- Setting up disk-based I/O fencing using installer
- Setting up server-based I/O fencing using installer
- Section II. Automated configuration using response files
- Performing an automated VCS configuration
- Performing an automated I/O fencing configuration using response files
- Section III. Manual configuration
- Manually configuring VCS
- Configuring LLT manually
- Configuring VCS manually
- Configuring VCS in single node mode
- Modifying the VCS configuration
- Manually configuring the clusters for data integrity
- Setting up disk-based I/O fencing manually
- Setting up server-based I/O fencing manually
- Configuring server-based fencing on the VCS cluster manually
- Setting up non-SCSI-3 fencing in virtual environments manually
- Setting up majority-based I/O fencing manually
- Manually configuring VCS
- Section IV. Upgrading VCS
- Planning to upgrade VCS
- Performing a VCS upgrade using the installer
- Tasks to perform after upgrading to 2048 bit key and SHA256 signature certificates
- Performing an online upgrade
- Performing a rolling upgrade of VCS
- Performing a phased upgrade of VCS
- About phased upgrade
- Performing a phased upgrade using the product installer
- Performing an automated VCS upgrade using response files
- Upgrading VCS using Live Upgrade and Boot Environment upgrade
- Planning to upgrade VCS
- Section V. Adding and removing cluster nodes
- Adding a node to a single-node cluster
- Adding a node to a single-node cluster
- Adding a node to a multi-node VCS cluster
- Manually adding a node to a cluster
- Setting up the node to run in secure mode
- Configuring I/O fencing on the new node
- Adding a node using response files
- Removing a node from a VCS cluster
- Removing a node from a VCS cluster
- Removing a node from a VCS cluster
- Adding a node to a single-node cluster
- Section VI. Installation reference
- Appendix A. Services and ports
- Appendix B. Configuration files
- Appendix C. Configuring LLT over UDP
- Using the UDP layer for LLT
- Manually configuring LLT over UDP using IPv4
- Manually configuring LLT over UDP using IPv6
- Appendix D. Configuring the secure shell or the remote shell for communications
- Appendix E. Installation script options
- Appendix F. Troubleshooting VCS configuration
- Appendix G. Sample VCS cluster setup diagrams for CP server-based I/O fencing
- Appendix H. Reconciling major/minor numbers for NFS shared disks
- Appendix I. Upgrading the Steward process
About the LLT and GAB configuration files
Low Latency Transport (LLT) and Group Membership and Atomic Broadcast (GAB) are VCS communication services. LLT requires /etc/llthosts and /etc/llttab files. GAB requires /etc/gabtab file.
Table: LLT configuration files lists the LLT configuration files and the information that these files contain.
Table: LLT configuration files
File | Description |
---|---|
/etc/default/llt | This file stores the start and stop environment variables for LLT:
The installer sets the value of these variables to 1 at the end of VCS configuration. If you manually configured VCS, make sure you set the values of these environment variables to 1. |
/etc/llthosts |
The file llthosts is a database that contains one entry per system. This file links the LLT system ID (in the first column) with the LLT host name. This file must be identical on each node in the cluster. A mismatch of the contents of the file can cause indeterminate behavior in the cluster. For example, the file /etc/llthosts contains the entries that resemble: 0 sys1 1 sys2 |
/etc/llttab |
The file llttab contains the information that is derived during installation and used by the utility lltconfig(1M). After installation, this file lists the private network links that correspond to the specific system. For example, the file /etc/llttab contains the entries that resemble the following:
For Solaris x64: set-node sys1 set-cluster 2 link e1000g1 /dev/e1000g:1 - ether - - link e1000g2 /dev/e1000g:2 - ether - - The first line identifies the system. The second line identifies the cluster (that is, the cluster ID you entered during installation). The next two lines begin with the link command. These lines identify the two network cards that the LLT protocol uses. If you configured a low priority link under LLT, the file also includes a "link-lowpri" line. Refer to the llttab(4) manual page for details about how the LLT configuration may be modified. The manual page describes the ordering of the directives in the llttab file. |
Table: GAB configuration files lists the GAB configuration files and the information that these files contain.
Table: GAB configuration files
File | Description |
---|---|
/etc/default/gab | This file stores the start and stop environment variables for GAB:
The installer sets the value of these variables to 1 at the end of VCS configuration. If you manually configured VCS, make sure you set the values of these environment variables to 1. |
/etc/gabtab | After you install VCS, the file /etc/gabtab contains a gabconfig(1) command that configures the GAB driver for use. The file /etc/gabtab contains a line that resembles: /sbin/gabconfig -c -nN The -c option configures the driver for use. The -nN specifies that the cluster is not formed until at least N nodes are ready to form the cluster. Veritas recommends that you set N to be the total number of nodes in the cluster. Note: Veritas does not recommend the use of the -c -x option for /sbin/gabconfig. Using -c -x can lead to a split-brain condition. Use the -c option for /sbin/gabconfig to avoid a split-brain condition. |