Specifications
Administrator Tasks
Administrator Tasks
Editing Server Properties
1. To edit the properties of a server, bring up the Server Properties dialog just as you would for
viewing server properties.
2. If you are logged into that server with the appropriate permissions, the following items will be
editable.
l Shutdown Strategy
l Failover Confirmation
3. Once you have made changes, the Apply button will be enabled. Clicking this button will
apply your changes without closing the window.
4. When you are finished, click OK to save any changes and close the window, or Cancel to
close the window without applying changes.
Creating a Communication Path
Before configuring a LifeKeeper communication path between servers, verify the hardware and
software setup. For more information,see the SPS for Linux Release Notes
To create a communication path between a pair of servers, you must define the path individually on
both servers. LifeKeeper allows you to create both TCP (TCP/IP) and TTY communication paths
between a pair of servers. Only one TTY path can be created between a given pair. However, you can
create multiple TCP communication paths between a pair of servers by specifying the local and
remote addresses that are to be the end-points of the path. A priority value is used to tell LifeKeeper
the order in which TCP paths to a given remote server should be used.
IMPORTANT: Using a single communication path can potentially compromise the ability of servers
in a cluster to communicate with one another. If a single comm path is used and the comm path fails,
LifeKeeper hierarchies may come in service on multiple servers simultaneously. This is known as
"false failover". Additionally, heavy network traffic on a TCP comm path can result in unexpected
behavior, including false failovers and LifeKeeper initialization problems.
1. There are four ways to begin.
l Right-click on a server icon, then click Create Comm Path when theserver context
menuappears.
l On the global toolbar,click the Create Comm Path button.
l On theserver context toolbar, if displayed, click the Create Comm Path button.
l On the Edit menu, select Server, then Create Comm Path.
2. A dialog entitled Create Comm Path will appear. For each of the options that follow, click
128LifeKeeper Administration Overview