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Home > PowerShell > Using PowerShell to run Queries Against Central Management Server

Using PowerShell to run Queries Against Central Management Server

I had a need recently to run a script on 50 different servers, same database schema, but different database names.  My first thought of just registering all the servers into Central Management Server and running the script one time against all 50 servers would not work due to the different database names.  Multi query using CMS will only show you databases that all servers have in common.

After thinking for a while I decided to try to write a PowerShell script that would query my CMS registered servers and in this particular case this should in fact work since I could derive the database name on each server based on the server name itself (Ex SVR-Site111, Site111-DB).

Using the built in module SQLPS to load the SQL Components into PowerShell I could navigate to the server list like a directory tree and get a list of the registered servers.  Since I could derive the database name from the server name I could also populate the database name parameter.  That along with the script I needed to execute was all I needed to make a connection and run the script.  Below is the PowerShell script (Note values surrounded by <> would need to be replaced with your CMS server name and group name)

# Created with: SAPIEN Technologies, Inc., PowerShell Studio 2012 v3.0.5
# Created on:   7/25/2012 7:33 PM
# Created by:   cchurchwell
# Organization: PWC
# Filename:     PopulateRemoteDatabase.ps1

Import-Module SQLPS -DisableNameChecking  

#Path to central management server
$serverGroupPath = "SQLSERVER:\SQLRegistration\Central Management Server Group\<CMSServerName>\<ServerGroup1>"

#Get List of registered Servers from above path
$instanceNameList = dir $serverGroupPath -recurse | select-object Name -Unique

$scriptFile = "C:\tmp\DatabaseScriptToBeRun.sql"

#instanceName returns System.Management.Automation.PSCustomObject and have to call .Name to get the actual ServerName.
foreach($instanceName in $instanceNameList) 
	$serverName = $instanceName.Name
	#Database name can be derived from the Server Name
	$DatabaseName = 'Site-' + $serverName.Substring(2,3)
    $DBParam1 = "DatabaseName=" + $DatabaseName
    $DBParams = $DBParam1
	Invoke-Sqlcmd -InputFile $scriptFile -Variable $DBParams -ServerInstance $serverName -ConnectionTimeout 300
    Write-Output "Script Completed for $serverName"
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