Cluster Server Installation Guide for Solaris x64 5.0 - Storage ...

Installing VCS on a single nodeAdding a node to a single-node cluster173Creating configuration filesConfiguring LLT and GAB1 Create the file /etc/llttab that lists both the nodes.See “Setting up /etc/llttab” on page 89.2 Create the file /etc/llthosts. Set up /etc/llthosts for a two-node cluster.See to “Setting up /etc/llthosts” on page 88.3 Create the file /etc/gabtab.See “Configuring group membership and atomic broadcast (GAB)” onpage 91.VCS uses LLT and GAB to replace the functions of TCP/IP for VCS privatenetwork communications. LLT and GAB provide the performance and reliabilityrequired by VCS for these and other functions.LLT and GAB must be configured as described in the following sections.Configuring low latency transport (LLT)To configure LLT, set up two files: /etc/llthosts and /etc/llttab on each node inthe cluster.Setting up /etc/llthostsThe file llthosts(4) is a database, containing one entry per system that links theLLT system ID (in the first column) with the LLT host name. You must create anidentical file on each node in the cluster.Use vi, or another editor, to create the file /etc/llthosts that contains entries thatresemble:0 north1 southSetting up /etc/llttabThe /etc/llttab file must specify the system’s ID number (or, its node name), and the network links that correspond to the system. In addition, the file can contain other directives. Refer also to the sample llttab file in /opt/VRTSllt.See “LLT directives” on page 174.Using vi or another editor, create the file /etc/llttab that contains entries thatresemble:set-node northset-cluster 2link e1000g0 e1000g:0 - ether - ­link e1000g1 e1000g:1 - ether - ­