Powershell Script for 500 errors - powershell

Question

I want power shell script to fetch all 500 entries from IIS logs from multiple servers. I have written a script that fetches 500 from single servers for previous hours. Could someone check and help me how I can go for fetching multiple servers. Script that I have:
#Set Time Variable -60
$time = (Get-Date -Format "HH:mm:ss"(Get-Date).addminutes(-60))
# Location of IIS LogFile
#$servers = get-content C:\Users\servers.txt
$File = "\\server\D$\Logs\W3SVC89\"+"u_ex"+(get-date).ToString("yyMMddHH")+".log"
# Get-Content gets the file, pipe to Where-Object and skip the first 3 lines.
$Log = Get-Content $File | where {$_ -notLike "#[D,S-V]*" }
# Replace unwanted text in the line containing the columns.
$Columns = (($Log[0].TrimEnd()) -replace "#Fields: ", "" -replace "-","" -replace "\(","" -replace "\)","").Split(" ")
# Count available Columns, used later
$Count = $Columns.Length
# Strip out the other rows that contain the header (happens on iisreset)
$Rows = $Log | where {$_ -like "*500 0 0*"}
# Create an instance of a System.Data.DataTable
#Set-Variable -Name IISLog -Scope Global
$IISLog = New-Object System.Data.DataTable "IISLog"
# Loop through each Column, create a new column through Data.DataColumn and add it to the DataTable
foreach ($Column in $Columns) {
$NewColumn = New-Object System.Data.DataColumn $Column, ([string])
$IISLog.Columns.Add($NewColumn)
}
# Loop Through each Row and add the Rows.
foreach ($Row in $Rows) {
$Row = $Row.Split(" ")
$AddRow = $IISLog.newrow()
for($i=0;$i -lt $Count; $i++) {
$ColumnName = $Columns[$i]
$AddRow.$ColumnName = $Row[$i]
}
$IISLog.Rows.Add($AddRow)
}
$IISLog | select #{n="DateTime"; e={Get-Date ("$($_.date) $($_.time)")}},sip,csuristem,scstatus | ? { $_.DateTime -ge $time } |Out-File C:\Users\Servers\results.csv

Answer 1

Assuming your logfile is always on the same path, and that servers.txt contains you server list,
you can read the server list then execute your code against each one using a foreach loop :
something like that ( a result file is create for each server) :
#Set Time Variable -60
$time = (Get-Date -Format "HH:mm:ss"(Get-Date).addminutes(-60))
# Location of IIS LogFile
$servers = get-content C:\Users\servers.txt
$servers| foreach{
#inside the foreach loop $_ will represent the current server
$File = "\\$_\D$\Logs\W3SVC89\"+"u_ex"+(get-date).ToString("yyMMddHH")+".log"
# Get-Content gets the file, pipe to Where-Object and skip the first 3 lines.
$Log = Get-Content $File | where {$_ -notLike "#[D,S-V]*" }
# Replace unwanted text in the line containing the columns.
$Columns = (($Log[0].TrimEnd()) -replace "#Fields: ", "" -replace "-","" -replace "\(","" -replace "\)","").Split(" ")
# Count available Columns, used later
$Count = $Columns.Length
# Strip out the other rows that contain the header (happens on iisreset)
$Rows = $Log | where {$_ -like "*500 0 0*"}
# Create an instance of a System.Data.DataTable
#Set-Variable -Name IISLog -Scope Global
$IISLog = New-Object System.Data.DataTable "IISLog"
# Loop through each Column, create a new column through Data.DataColumn and add it to the DataTable
foreach ($Column in $Columns) {
$NewColumn = New-Object System.Data.DataColumn $Column, ([string])
$IISLog.Columns.Add($NewColumn)
}
# Loop Through each Row and add the Rows.
foreach ($Row in $Rows) {
$Row = $Row.Split(" ")
$AddRow = $IISLog.newrow()
for($i=0;$i -lt $Count; $i++) {
$ColumnName = $Columns[$i]
$AddRow.$ColumnName = $Row[$i]
}
$IISLog.Rows.Add($AddRow)
}
$IISLog | select #{n="DateTime"; e={Get-Date ("$($_.date) $($_.time)")}},sip,csuristem,scstatus | ? { $_.DateTime -ge $time } |Out-File C:\Users\Servers\$_results.csv
}
Note that this will run your code sequentially on each of your server wich can be time consumming. If you are facing duration issue, you can try to use invoke-command and the -asjob parameter in order to launch you code asynchronoulsy