The eG Installation Guide - eG Innovations

Installing and Configuring on Windows Environments
3.2.2.2 Using the Silent Mode Script to Perform Subsequent Agent
Installations
Once the silent mode script is created, you can use this script to perform subsequent agent
installations. Before attempting to reuse a script file, you might have to decide on the following:
(a) Whether the target script file can be used as is;
(b) Whether the target script file can be used after minor changes;
(c) Whether a new script file is to be generated
This decision is typically based on the configuration you desire for the eG agent that you are about to
install. Moreover, the process of installation may slightly vary depending upon this decision. The
sections that follow discuss each decision and how it impacts the silent mode installation process.
3.2.2.2.1 Silent Mode Installation of an eG Agent without any Changes to the
Script File
Sometimes, for some reason, you might just want to ‘reinstall’ an eG agent on a host where a script
file pre-exists; the configuration of the old agent and the intended configuration of the new agent may
be the same. In this case therefore, you can opt for (a) above - i.e., proceed to use a script file,
without any changes, for agent installation in the silent mode. The procedure to reinstall an eG agent
in the silent mode has been discussed below:
1. Uninstall the eG agent on the host (if it already exists).
2. Ensure that the eGAgent_.exe is present on the host, go to the command prompt, and then
switch to the directory containing the agent executable.
3. From that directory, execute the following command to install the eG agent in the silent mode:
eGAgent_.exe -a -s /f1””. In other
words, to extract installation inputs from the eGAgent.iss file that was created in our example
above, the command will be: eGAgent_.exe -a -s /f1”c:\script\eGAgent.iss”.
4. The eG agent installation will then begin and proceed in the silent mode. Setup will extract the
required inputs from the iss file specified in step 3 above and perform the installation
automatically, requiring no user intervention of any kind.
3.2.2.2.2 Silent Mode Installation of an eG Agent after making Minor Changes to
the Script File
Note that all the eG agents deployed in a target environment will not possess the same configuration -
at least, the nick name will be different for each agent. Since the .iss file holds a particular agent’s
configuration, you cannot use the same script file, as is, for installing eG agents on multiple hosts. In
such cases, besides the mandatory nick name change, a few/more minor changes to the script file
may become necessary. The other changes that qualify as ‘minor’ changes have been listed below:
The manager IP and/or port
The agent install directory
The Proxy server IP and/or port
The user name and/or password for authenticating the Proxy server communication
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