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Archive for the ‘Jamf Pro’ Category

Mad, bad and possibly dangerous – a cautionary tale of software installation

June 5, 2020 7 comments

In my career, I’ve run across a lot of terrible installers in a variety of forms. The one I ran across today though is noteworthy enough that I want to point it out because of the following reasons:

  1. It’s an installer application. I have opinions on those.
  2. It’s for a security product where, as part of the installation, you need to provide the username and password for an account on the Mac which has:
  • Administrator privileges
  • Secure Token

Note: I have no interest in talking to the vendor’s legal department, so I will not be identifying the vendor or product by name in this post. Instead, I will refer to the product and vendor in this post as “ComputerBoat” and leave discovery of the company’s identity to interested researchers.

For more details, please see below the jump.

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Identifying and deleting Jamf Pro inventory records with duplicate serial numbers

May 26, 2020 1 comment

I recently saw an issue where several computers in Jamf Pro were showing up with the same serial number listed in their inventory records. This made it difficult to work with this serial number using the API because Jamf Pro Classic API calls may fail if we’re referencing the serial number in the API call and more than one inventory record exists with that serial number.

First off, how can this happen? Aren’t serial numbers supposed to be unique? They are, but there’s two instances where serial numbers may unfortunately be associated with more than one Mac.

Hardware repair:

When you send a Mac out for repair and the logic board is replaced as part of the repair, the Mac’s existing serial number is flashed onto the replacement logic board.

However, both the old and new logic boards have separate Unique Device Identifiers (UDID) associated with them. When enrolling a device into Jamf Pro, it is possible for a new inventory record to be set up if a device has:

  • The same serial number listed in as an existing inventory record
  • A UDID not found in other inventory records

Parallels macOS virtual machine:

macOS virtual machines set up by Parallels Desktop and other Parallels hypervisor products use the same serial number as the Mac which is running the Parallels hypervisor software. These VMs will likewise have separate Hardware UDIDs associated with them.

So what to do with these duplicate records? My recommendation is to delete them from your Jamf Pro server when you find them, especially if you do a lot of work using the API. To help with this task, a script has been developed to identify and delete unwanted duplicates. For more details, please see below the jump.

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Removing restart options from all Jamf Pro policies in a specified category

May 22, 2020 Leave a comment

As a follow-on to my previous post on removing the Restart Options section from Jamf Pro policies, I’ve written a script to target the policies in a particular Jamf Pro category. For more details, please see below the jump.

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Removing the Restart Options section from Jamf Pro policies using the API

May 14, 2020 Leave a comment

As part of setting up new Jamf Pro policies, the Restart Options section is automatically added to newly-created policies.

Screen Shot 2020 05 14 at 5 41 49 PM

For policies which don’t need it though, this section should be removed as a best practice to avoid accidental triggering of a restart where one isn’t needed or wanted. In some cases, the options provided by this section are never needed and it may be useful to be able to remove the Restart Options section from all of your current Jamf Pro policies.

In those cases, depending on how many policies you have, it can be tedious to have to do them one at a time using the admin console. However, with the right API calls in a script, it’s straightforward to perform these tasks using the Jamf Pro API. For more information, please see below the jump.

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Booting to macOS Recovery or Diagnostics via Jamf Pro’s Self Service

March 28, 2020 7 comments

One of the advantages provided by Jamf Pro’s Self Service is that you can use it to provide easy access to tools for your users or helpdesk folks. One such tool could be a script which helps folks boot to their Macs to one of the following Apple support services:

For more details, please see below the jump.

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Jamf Pro Inventory Update and recon functions – alike, but not the same

March 13, 2020 3 comments

As part of discussing the outcome of a troubleshooting session concerning Jamf Pro and profile deployment with a teammate, I learned that the two functions that Jamf Pro uses to update its computer inventory worked in a similar fashion, but they weren’t identical.

The differences turned out to be important for profile deployment. For more details, please see below the jump.

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Backing up a Jamf Pro database hosted in Amazon Web Services’ RDS service to an S3 bucket

February 16, 2020 Leave a comment

For those using Amazon Web Services to host Jamf Pro, one of the issues you may run into is how to get backups of your Jamf Pro database which you can access. AWS’s RDS service makes backups of your database to S3, but you don’t get direct access to the S3 bucket where they’re stored.

In the event that you want a backup that you can access of your RDS-hosted MySQL database, Amazon provides the option for exporting a database snapshot to an S3 bucket in your AWS account. This process will export your data in Apache Parquet format instead of a MySQL database export file.

However, it’s also possible to create and use an EC2 instance to perform the following tasks:

  1. Connect to your RDS-hosted MySQL database.
  2. Create a backup of your MySQL database using the mysqldump tool.
  3. Store the backup in an S3 bucket of your choosing.

For more details, please see below the jump.

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