Program: SERVERinfo.ksh

This script gathers server information from 
each AIX server and inserts this information into 
the CMDB database.

Usage: SERVERinfo.ksh [-v] [-a] [-m machineName]

    Where '-v' = Verbose mode.
          '-a' = Gather server information from all
                 servers defined in the CMDB Server table
                 whose Operating System is defined as AIX.
          '-m' = Requires a single argument specifying
                 the IP name of a machine from which to
                 gather server information.

"AutoContent" enabled

Description:

This program gathers server information from AIX servers, builds the appropriate SQL statements, then deletes and inserts records into the MYSQL CMDB test database running on eperf.tu.com

The information gathered includes operating system name, OS version, and OS maintenance level.

Assumptions:

This program assumes there is a script called "tsql.sh" in the current directory. This script is expected to accept SQL statements through standard input and perform all MSSQL database communications.

The database table Server02 is assumed to already exist in the MSSQL database and is configured appropriately to accept the following fields -

Server02: name, osname, osversion, oslevel

See the database schema for further explanation of these fields.

Dependencies:

This script uses "rsh" to run commands on each machine that generate the server information. The user running this script must have "rsh" access to all machines for which this script will be executed.

The output of the MSSQL SQL processor is a specific format and this script is expecting the data to exist in that format. If the SQL processor is changed, this script must be modified to correctly interpret the output from the SQL processor.

Products:

The product of this script is a list of SQL statements to update the CMDB Server02 table. The CMDB database is NOT modified as a result of this script. The SQL statements generated by this script must be executed by a separate SQL processor.

Configured Usage:

This script is designed to be executed from the command line or scheduled as a background process.

Details:

Build a command to be executed on each remote machine via "rsh" This command will generate a series of shell variable assignment that will contain values representing the current configuration of the server.

This script is currently configured to be executed from a specific machine in a specific directory i.e.

eperf:/home/french/mysql

This will be changed in future iterations of the script, but for now thats just the way it is.

Check to see if the user identified a specific machine from which to gather user and group information, or requested the script to run gather infor for all machines. Depending upon what the user specified, the server name and database record number for each server is selected from the database and output to a temporary file.

Read each server ID number and server name from the temporary file.

Unset the shell variable containing the configuration values of the server to ensure values from previous iterations of the loop are not carried forward.

A ping test is performed to determine if the target machine is network accessible. If it can not be pinged, it is skipped.

If the ping test is successful, the previously built command command is executed on the remote machine. The result of the command is a series of korn shell variable assignments. These statements are redirected to a temporary file and the temporary file will be execute to perform the assignments.

The 'rsh' command is performed in the background and this script is told to sleep for 10 seconds while the rsh command is executing. After 10 seconds, if the rsh command is still executing, it is assumed to be hung and killed. If the rsh command was hung, no update command is issued since no values were returned. Gather a list of all grandchild processes so they may also be killed if necessary.

If the 'rsh' command does not return after 10 seconds, assume it is hung and kill the process. Also kill all grandchild processes associated with this 'rsh' child process.

If the rsh command was successful, make the temporary file, containing the korn shell variable assignments, executable and execute it in the current shell environment.

If after the temporary file is executed the shell variable 'SERVNAME' contains a value, generate an SQL command to update the CMDB with the new values associated with the server.

Continue with the next iteration of the loop which goes to the next server in the list.

Cleanup any temporary files

This file last modified 02/04/09