PRTG Daily Email Powershell Script
So I don't write much powershell but recently I needed a way to send daily emails out of PRTG. Thanks Paessler which has kept it simple with their PRTG monitoring system as the hardest part of this script was getting the data in HTML, remember I don't write much powershell. ;) If you have not used PRTG before check it out if you need some alerting in your environment. Personally this is one of my favorite systems for just monitoring because a lot of other monitoring systems include everything but the kitchen sink and reality we just need to know what's up and what's down. This script grabs an XML file that PRTG builds and saves it as "table.xml" I have the script check if there are any sensors in trouble if not send an email. If PRTG is reporting a sensor or sensors that are in trouble this scripts builds an HTML document with a table and list the sensors in trouble highlighting the status column with the appropriate color and sends an email.
Thanks goes to Martin Pugh who has provided the set-cellcolor function. :)
1# PRTG EMAIL ACTIVE ALARMS POWERSHELL SCRIPT.
2# USE TASK SCHEDULER TO RUN THIS SCRIPT.
3# Load up the function "Set-CellColor" thanks to Martin Pugh <img draggable="false" role="img" class="emoji" alt="🙂" src="https://s0.wp.com/wp-content/mu-plugins/wpcom-smileys/twemoji/2/svg/1f642.svg">
4Function Set-CellColor
5{ <#
6 .SYNOPSIS
7 Function that allows you to set individual cell colors in an HTML table
8 .DESCRIPTION
9 To be used inconjunction with ConvertTo-HTML this simple function allows you
10 to set particular colors for cells in an HTML table. You provide the criteria
11 the script uses to make the determination if a cell should be a particular
12 color (property -gt 5, property -like "*Apple*", etc).
13
14 You can add the function to your scripts, dot source it to load into your current
15 PowerShell session or add it to your $Profile so it is always available.
16
17 To dot source:
18 .".\Set-CellColor.ps1"
19
20 .PARAMETER Property
21 Property, or column that you will be keying on.
22 .PARAMETER Color
23 Name or 6-digit hex value of the color you want the cell to be
24 .PARAMETER InputObject
25 HTML you want the script to process. This can be entered directly into the
26 parameter or piped to the function.
27 .PARAMETER Filter
28 Specifies a query to determine if a cell should have its color changed. $true
29 results will make the color change while $false result will return nothing.
30
31 Syntax
32 <Property Name> <Operator> <Value>
33
34 <Property Name>::= the same as $Property. This must match exactly
35 <Operator>::= "-eq" | "-le" | "-ge" | "-ne" | "-lt" | "-gt"| "-approx" | "-like" | "-notlike"
36 <JoinOperator> ::= "-and" | "-or"
37 <NotOperator> ::= "-not"
38
39 The script first attempts to convert the cell to a number, and if it fails it will
40 cast it as a string. So 40 will be a number and you can use -lt, -gt, etc. But 40%
41 would be cast as a string so you could only use -eq, -ne, -like, etc.
42 .PARAMETER Row
43 Instructs the script to change the entire row to the specified color instead of the individual cell.
44 .INPUTS
45 HTML with table
46 .OUTPUTS
47 HTML
48 .EXAMPLE
49 get-process | convertto-html | set-cellcolor -Propety cpu -Color red -Filter "cpu -gt 1000" | out-file c:\test\get-process.html
50
51 Assuming Set-CellColor has been dot sourced, run Get-Process and convert to HTML.
52 Then change the CPU cell to red only if the CPU field is greater than 1000.
53
54 .EXAMPLE
55 get-process | convertto-html | set-cellcolor cpu red -filter "cpu -gt 1000 -and cpu -lt 2000" | out-file c:\test\get-process.html
56
57 Same as Example 1, but now we will only turn a cell red if CPU is greater than 100
58 but less than 2000.
59
60 .EXAMPLE
61 $HTML = $Data | sort server | ConvertTo-html -head $header | Set-CellColor cookedvalue red -Filter "cookedvalue -gt 1"
62 PS C:\> $HTML = $HTML | Set-CellColor Server green -Filter "server -eq 'dc2'"
63 PS C:\> $HTML | Set-CellColor Path Yellow -Filter "Path -like ""*memory*""" | Out-File c:\Test\colortest.html
64
65 Takes a collection of objects in $Data, sorts on the property Server and converts to HTML. From there
66 we set the "CookedValue" property to red if it's greater then 1. We then send the HTML through Set-CellColor
67 again, this time setting the Server cell to green if it's "dc2". One more time through Set-CellColor
68 turns the Path cell to Yellow if it contains the word "memory" in it.
69
70 .EXAMPLE
71 $HTML = $Data | sort server | ConvertTo-html -head $header | Set-CellColor cookedvalue red -Filter "cookedvalue -gt 1" -Row
72
73 Now, if the cookedvalue property is greater than 1 the function will highlight the entire row red.
74
75 .NOTES
76 Author: Martin Pugh
77 Twitter: @thesurlyadm1n
78 Spiceworks: Martin9700
79 Blog: www.thesurlyadmin.com
80
81 Changelog:
82 1.5 Added ability to set row color with -Row switch instead of the individual cell
83 1.03 Added error message in case the $Property field cannot be found in the table header
84 1.02 Added some additional text to help. Added some error trapping around $Filter
85 creation.
86 1.01 Added verbose output
87 1.0 Initial Release
88 .LINK
89 http://community.spiceworks.com/scripts/show/2450-change-cell-color-in-html-table-with-powershell-set-cellcolor
90 #>
91
92 [CmdletBinding()]
93 Param (
94 [Parameter(Mandatory,Position=0)]
95 [string]$Property,
96 [Parameter(Mandatory,Position=1)]
97 [string]$Color,
98 [Parameter(Mandatory,ValueFromPipeline)]
99 [Object[]]$InputObject,
100 [Parameter(Mandatory)]
101 [string]$Filter,
102 [switch]$Row
103 )
104
105 Begin {
106 Write-Verbose "$(Get-Date): Function Set-CellColor begins"
107 If ($Filter)
108 { If ($Filter.ToUpper().IndexOf($Property.ToUpper()) -ge 0)
109 { $Filter = $Filter.ToUpper().Replace($Property.ToUpper(),"`$Value")
110 Try {
111 [scriptblock]$Filter = [scriptblock]::Create($Filter)
112 }
113 Catch {
114 Write-Warning "$(Get-Date): ""$Filter"" caused an error, stopping script!"
115 Write-Warning $Error[0]
116 Exit
117 }
118 }
119 Else
120 { Write-Warning "Could not locate $Property in the Filter, which is required. Filter: $Filter"
121 Exit
122 }
123 }
124 }
125
126 Process {
127 ForEach ($Line in $InputObject)
128 { If ($Line.IndexOf("<tr><th") -ge 0)
129 { Write-Verbose "$(Get-Date): Processing headers..."
130 $Search = $Line | Select-String -Pattern '<th ?[a-z\-:;"=]*>(.*?)<\/th>' -AllMatches
131 $Index = 0
132 ForEach ($Match in $Search.Matches)
133 { If ($Match.Groups[1].Value -eq $Property)
134 { Break
135 }
136 $Index ++
137 }
138 If ($Index -eq $Search.Matches.Count)
139 { Write-Warning "$(Get-Date): Unable to locate property: $Property in table header"
140 Exit
141 }
142 Write-Verbose "$(Get-Date): $Property column found at index: $Index"
143 }
144 If ($Line -match "<tr( style=""background-color:.+?"")?><td")
145 { $Search = $Line | Select-String -Pattern '<td ?[a-z\-:;"=]*>(.*?)<\/td>' -AllMatches
146 $Value = $Search.Matches[$Index].Groups[1].Value -as [double]
147 If (-not $Value)
148 { $Value = $Search.Matches[$Index].Groups[1].Value
149 }
150 If (Invoke-Command $Filter)
151 { If ($Row)
152 { Write-Verbose "$(Get-Date): Criteria met! Changing row to $Color..."
153 If ($Line -match "<tr style=""background-color:(.+?)"">")
154 { $Line = $Line -replace "<tr style=""background-color:$($Matches[1])","<tr style=""background-color:$Color"
155 }
156 Else
157 { $Line = $Line.Replace("<tr>","<tr style=""background-color:$Color"">")
158 }
159 }
160 Else
161 { Write-Verbose "$(Get-Date): Criteria met! Changing cell to $Color..."
162 $Line = $Line.Replace($Search.Matches[$Index].Value,"<td style=""background-color:$Color"">$Value</td>")
163 }
164 }
165 }
166 Write-Output $Line
167 }
168 }
169
170 End {
171 Write-Verbose "$(Get-Date): Function Set-CellColor completed"
172 }
173}
174# Load up the variables, feel free to edit below like what is your email server?
175$smtp = "mailserver.example.com"
176# Who is this email going to?
177$to = "Mr. Joe <joe@example.com>"
178# Carbon Copy anyone?
179$cc = "Mr. Admin <admin@example.com>"
180$from = "PRTG Network Monitor <PRTG@example.com>"
181$subject = "PRTG Checks"
182$time = Get-Date
183# Get a table ready in HTML just in case we have alerts in PRTG.
184$a = "<style>"
185$a = $a + "BODY{background-color:White;}"
186$a = $a + "TABLE{border-width: 1px;border-style: solid;border-color: black;border-collapse: collapse;}"
187$a = $a + "TH{Font-family: Courier; color: white; border-width: 1px;padding: 3px;border-style: solid;border-color: black;background-color:black}"
188$a = $a + "TD{Font-family: Courier; border-width: 1px;padding: 3px;border-style: solid;border-color:}"
189$a = $a + "</style>"
190# Write out something in HTML in case we have alerts in PRTG.
191$b = "<H2>PRTG Alerts</H2>"
192$b = $b + "<p>Houston, we have a problem so please reference the chart below.</p>"
193$b = $b + "<p>System Generated at $time.</p>"
194# Write out something in HTML in case no alerts are active.
195$c = "<H2>PRTG Alerts </H2>"
196$c = $c + "<p>No alerts being reported.</p>"
197$c = $c + "<p>System Generated at $time.</p>"
198# URL to your PRTG server you will need to reference a local user account and password that has access to PRTG. See the end of the URL.
199$url = "https://prtg.example.com/api/table.xml?content=sensors&columns=objid,downtimesince,device,sensor,lastvalue,status,message,priority&filter_status=5&filter_status=4&filter_status=10&filter_status=13&filter_status=14&sortby=priority&username=GOES_HERE&passhash=GOES_HERE"
200# Where do you want to store the XML file?
201$destination = "C:\PRTG-DAILY-EMAIL\table.xml"
202# What colors do you like for each alert?
203# You have a lot to choose from https://msdn.microsoft.com/en-us/library/aa358802.aspx
204$AckColor = "LightPink"
205$AckMsg = "Down (Acknowledged) "
206$DownColor = "Red"
207$DownMsg = "Down "
208$WarnColor = "Yellow"
209$WarnMsg = "Warning "
210$SimColor ="DarkSalmon"
211$SimMsg = "Down (simulated error)"
212$outfile ="C:\PRTG-DAILY-EMAIL\HTML.htm"
213
214# Let's run the powershell script
215
216Invoke-WebRequest $url -Outfile $destination
217$xml = [xml](Get-Content .\table.xml)
218# If nothing is alerting in PRTG we don't need to stay around. Let's say something about it and quit out.
219if ($xml.sensors.totalcount -eq 0) {
220ConvertTo-Html -Body $c | Out-File $outfile
221$emailbody = Get-Content $outfile | Out-String
222send-MailMessage -BodyAsHtml -SmtpServer $smtp -To $to -Cc $cc -From $from -Subject $subject -body $emailbody
223exit
224}
225$HTML = $xml.sensors.item | Sort-Object -Property device | select device,downtimesince,sensor,status,message_raw |
226ConvertTo-HTML -head $a -body $b
227$HTML = $HTML | Set-cellcolor status $WarnColor -Filter "status -eq '$WarnMsg'"
228$HTML = $HTML | Set-cellcolor status $DownColor -Filter "status -eq'$DownMsg'"
229$HTML = $HTML | Set-cellcolor status $AckColor -Filter "status -eq'$AckMsg'"
230$HTML = $HTML | Set-cellcolor status $SimColor -Filter "status -eq'$SimMsg'"
231$HTML | Out-File $outfile
232$emailbody = Get-Content $outfile | Out-String
233send-MailMessage -BodyAsHtml -SmtpServer $smtp -To $to -Cc $cc -From $from -Subject $subject -body $emailbody
234exit
So in the end you should get an email that looks something below if something is wrong. That's all I got I hope this information is helpful feel free to edit this and use it! 