In PowerShell, how to I send mail and enumerate in email body list of discovered errors - powershell

Question

I have the following code snippet from my PowerShell script that...
Loops through a list of servers
Does a Select-String -notmatch on the error log at each server
Flags the server if the error log is bad, and gives the OK if the error log if fine
What I'd like to also do is send an email report that enumerates each of the discovered bad error logs in a list, and also list all the servers whose error logs are OK. Something like this in the email body:
The following servers have bad error logs:
Server3
Server6
Server14
The following servers are OK:
Server1
Server2
Server5
Here is my code snippet:
$Servers = Get-Content $ServerLst
ForEach ($Server in $Servers)
{
$ErrorLog = Get-ChildItem -Path \\$Server\$LOG_PATH -Include Error.log -Recurse | Select-String -notmatch $SEARCH_STR
If ($ErrorLog)
{
Write-Host "Bad Error Log found at $Server!"
}
Else
{
Write-Host "Error log is OK."
}
}
I'm guessing I would need a Send-Mail function where I would pass in the server names with bad error logs, etc. However, I'm not quite sure how to approach this.
Any great ideas will be greatly appreciated. Thanks!

Answer 1

If you are using Powershell V1 use this function from the Powershell Cookbook to send mail. In Powershell V2 you can send mail using Send-MailMessage.
$Servers = Get-Content $ServerLst
$Bad = "The following servers have bad error logs:`n`n"
$OK = "`nThe following servers are OK:`n`n"
ForEach ($Server in $Servers)
{
$ErrorLog = Get-ChildItem -Path \\$Server\$LOG_PATH -Include Error.log -Recurse | Select-String -notmatch $SEARCH_STR
If ($ErrorLog)
{
$Bad += "`t - $Server`n"
}
Else
{
$OK += "`t - $Server`n"
}
}
Send-MailMessage -Body "$Bad $OK" -Subject "Bad Logs" -SmtpServer $servername -To $to -From $from
Remark: The smtpserver parameter is called smtphost in the Powershell cookbook function.

Answer 2

You will need to make the function on your own, but here is some pseudo code:
Function SendMail
{
Param(...your params here)
...send the mail...
}
<...
Your code to check all your servers
You need to save your errors or issues to an array or hashtable.
I'll assume you use a 2-field array called $ErrArray
...>
# Now at the end you build a string for the body of the email to incorporate your errors
$StrBody = "Bad Error Log Report`n`n"
$ErrArray | ForEach-Object {$StrBody = $Strbody + "`n$($_[0]) server had an issue: $($_[1])`n"}
SendMail $EmailTo $EmailSubject $StrBody
So the breakdown:
Make a mail function
Save the results of your analysis to an array or hashtable
Iterate through your results object and append each result record to the string for your email
Call the email function