Run sqlquery on multiple server using Powershell - sql

Question

I am trying to run this query
select mirroring_role_desc from sys.database_mirroring where database_id > 4 and mirroring_state is NOT NULL
So the query will basically output the number of databases and just show principal/mirror
like this
I want this query to output to excel file another interesting thing, if any one database in the instance is prinicial/mirror then we can assume the whole instance as principal/mirror.
So in the excel file I want one column with servername\hostname and then the next column to show if it is mirror or principal or none (if none just leave blank) How to do this?
I have tried this,
$ServerInstance = "server1\instance1a "
$Database = " "
$ConnectionTimeout = 30
$Query = "select mirroring_role_desc from sys.database_mirroring where database_id > 4 and mirroring_state is NOT NULL"
$QueryTimeout = 120
$conn=new-object System.Data.SqlClient.SQLConnection
$ConnectionString = "Server={0};Database={1};Integrated Security=True;Connect Timeout={2}" -f $ServerInstance,$Database,$ConnectionTimeout
$conn.ConnectionString=$ConnectionString
$conn.Open()
$cmd=new-object system.Data.SqlClient.SqlCommand($Query,$conn)
$cmd.CommandTimeout=$QueryTimeout
$ds=New-Object system.Data.DataSet
$da=New-Object system.Data.SqlClient.SqlDataAdapter($cmd)
[void]$da.fill($ds)
$conn.Close()
$ds.Tables
frankly the above code is working fine but the problem is getting the instance name and only single column with principal/mirror INTO a excel file, that is the issue that I am having.
To get a better idea this is what I am trying to achieve:

Answer 1

I wrote a blog post a while back to run a script across all servers in a central management server. You should be able to adapt it fairly easily. Check it out here.