Need some sort of SQL Server error log parser?

Question

I have over 100 MSSQL instances - ranging from SQL2000 - SQL2012.
Currently, I'm querying using EXEC SP_ERRORLOG to read the log files. With the querying method, I cannot always be on top of things as I like. And frankly, I just check once a day for a period of 24 hours or so.
I'm wondering if there's an utility / software / solutions out there that does the following:
1) constantly monitors the error logs of all instances
2) present the log files in an orderly manner for each instances as needed.
3) email out a group of people for certain error / severity / state number. 
Putting this in SQL Server Security because I'm mainly interested in errors like 18456 Login failed either from reboot or actual login failed.
Thanks

Answer 1

You can try that using Powershell
srvr.txt should contain a list of servers, I would prefer same SQL version.
Save the content to ReadingErrorlog.PS1
param
[String] $infile,
[DateTime] $date,
[int] $last,
[String] $OutFile
function getUNCPath($infile)
$qualifier = Split-Path $infile -qualifier
$drive = $qualifier.substring(0,1)
$noqualifier = Split-Path $infile -noQualifier
"$drive`$$noqualifier"
$srvr=get-content c:\DBAScripts\srvr.txt
foreach($svr in $srvr)
$UNC=getUNCPath($infile)
$readbuffer=get-content -path \\$svr\$UNC -encoding unicode | select-object -last $last
$i=0
[Datetime] $date
[String] $Outbuffer
$outbuffer=""
foreach($line in $readbuffer)
$i++;
$mydate=$line.substring(0,22)
Write-host $Mydate
if ($line -ne "")
if($mydate -ge $date)
if ($line -like "*Error:*")
write-output "$i: $line"
$outbuffer=$outbuffer+$line
add-content -path $outfile -value $outbuffer
sample call
PS:\>.\ReadingErrorlog.PS1  "f:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\Log\errorlog"
 "2012-05-01 12:00:00.00"
 10  c:\DBAScripts\output.txt
You may need to re-work on the code here and there.
--Prashanth