Archive for the ‘Storage’ Category


In this post I’m going to share a script I wrote that speeds up the creation of Cisco MDS 9000 series SAN switch configurations. If like me you’re in the business of adding Cisco UCS Blades in bulk you will know that copying and pasting large amounts of wwpn’s and zoning can be prone to errors – let alone time consuming. Thankfully Cisco released the Cisco PowerTool pack for PowerShell for managing UCS environments; this allows easy access to extract all the necessary information needed to create our configurations quickly and consistently.

The SAN that was used to demo this script contains two Cisco MDS switches with two connections a piece to SPs on an EMC VNX5300.

This script should be treated as an example rather than a script that is generic enough to be run in any environment. In the below script you will notice three areas that have “#User to change as needed” comments, here you will see that I have unique values specific to my environment that will need to be edited. These values include my VSAN numbering, Zoneset naming and some datacentre location information.

First you will need to import the PowerShell UCS module and then connect to your UCS environment:

Import-Module CiscoUCSPS
Connect-Ucs <UCSIP> -Credential (Get-Credential)

Upon running the script you will be prompted for the serviceProfilePrefix which I use to filter Service Profile Names, in my example I will use the text “PDC” which represents a collection of VMware vCloud Director Provider vDC Blades.

Note: To copy the code please double click within the code box.

<#
.NOTES
Author: John Milner aka jfrmilner
Blog  : https://jfrmilner.wordpress.com
Post  : http://wp.me/pFqJZ-6y
Requires: Powershell + Cisco UCS PowerTool Pack
Legal: This script is provided "AS IS" with no warranties or guarantees, and confers no rights. You may use, modify, reproduce, and distribute this script file in any way provided that you agree to give the original author credit.
Version: v1.0 - 27 Oct 2013
#>
param ( [Parameter(Mandatory=$true)] [System.String]$serviceProfilePrefix )

$vSANs = 3801, 3802 #User to change as needed

#Clear Host Screen
Clear-Host

#Collect all Initiators
$initiators =  Get-UcsWwnInitiator | ? { $_.Assigned -eq "yes" } | Sort-Object -Property AssignedToDn
foreach ( $initiator in $initiators ) {
$split = $initiator.AssignedToDn -split "/"
Add-Member -InputObject $initiator -Name ServiceProfile -MemberType NoteProperty -Value ($Split[1] -replace "^ls-") -Force
Add-Member -InputObject $initiator -Name vHBA -MemberType NoteProperty -Value "vHBA$($split[2].ToCharArray()[-1])" -Force
}

#Create Service Profile List
$serviceProfiles = $initiators | Sort-Object serviceprofile | Select-Object serviceprofile -Unique
#Filter List with serviceProfilePrefix param
$serviceProfiles = $serviceProfiles | ? { $_.serviceProfile -match $serviceProfilePrefix } | % { $_.serviceprofile }

$vHBAs = "vHBA0","vHBA1"

foreach ( $vSAN in $vSANs ) {

switch ($vSAN) {
3801 {"!D10 Config" ; $vHBANum = $vHBAs[0] ; $zoneSetName = "D11_MDS01" ; $SPA = "SPA0" ; $SPB = "SPB1" ; [int]$dataHall = 1 } #User to change as needed
3802 {"!H18 Config" ; $vHBANum = $vHBAs[1] ; $zoneSetName = "H18_MDS02" ; $SPA = "SPA1" ; $SPB = "SPB0" ; [int]$dataHall = 2 } #User to change as needed
}
foreach ( $serviceProfile in $serviceProfiles ) {
$vHBA = $initiators | ? { ($_.serviceProfile -eq $serviceProfile) -and ($_.vHBA -eq $vHBANum)}

"fcalias name ESX_DH$($dataHall)_$($serviceProfile)_$($vHBA.vHBA) vsan $($vSAN)"
"member pwwn $(($vHBA.Rn).tolower())"
}
foreach ( $serviceProfile in $serviceProfiles ) {
"zone name Z_ESX_DH$($dataHall)_$($serviceProfile)_$($vHBANum)_DH$($dataHall)_VNX5300 vsan $($vSAN)"
"member fcalias DH$($dataHall)_VNX5300_$($SPA)"
"member fcalias DH$($dataHall)_VNX5300_$($SPB)"
"member fcalias ESX_DH$($dataHall)_$($name)_$($vHBANum)"
}
"zoneset name ZS_NDC1_$($zoneSetName)_SAN_JFRMILNER_NET vsan $($vSAN)"
foreach ( $serviceProfile in $serviceProfiles ) {
"member Z_ESX_DH$($dataHall)_$($serviceProfile)_$($vHBANum)_DH$($dataHall)_VNX5300"
}

}

The output of the script will be presented to the console, here is an example:

MDS Config

As you can see in the above output the script has created fcaliases for each of the newly provisioned PDC Service Profile HBAs, created Zones and added these to the Zoneset for both my Switches.

Additionally this script can be easily modified to do bulk removals as it’s just a matter of prefixing some of the configuration lines with “no” for example “no fcalias name” and “no zone name”, as this has potential of causing an APD situation I will not be providing any example of this.

I hope you find this script useful and that it saves you as much time and reduces human error incidents as it has for me. As always please add a comments below and thank you for reading.

Regards,

jfrmilner

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