Log Insight Upgrade: Errors and Best Practices

The title of this post may make it sound like upgrades are difficult in Log Insight, but actually, Log Insight is one of the easiest products to upgrade! From time to time you may experience an error and this post will explain what the errors mean, why they occur, and some best practices to prevent them from happening.

How to upgrade

Upgrading Log Insight is as simple as navigating to the Administration > Appliance page through the UI of the standalone/master Log Insight node and selecting Upload PAK…

Note that for cluster deployments after upgrading the master you need to navigate to the Administration > Cluster page through the UI of the master Log Insight node and for each worker select the maintenance mode button followed by the upgrade button.

Internal server error

This error is typically seen when a timeout or disconnect happens between the client and the server. For example, if you are attempting to upgrade from a client on a WAN from the server.

Best practice: Upgrade Log Insight from a client in a LAN.

Signature of the PAK file cannot be validated

This error can be seen for a variety of reasons including:

  • The file uploaded is not a PAK file
  • The file uploaded (i.e. PAK) is not complete
  • The license on Log Insight has expired
  • The root filesystem on the Log Insight virtual appliance does not contain enough space

To resolve this issue, perform the following troubleshooting steps

  1. Ensure you are uploading a PAK file
  2. Verify the md5sum of the PAK file against the VMware download site
  3. Verify at least one valid license is configured on Log Insight
  4. Log into the virtual appliance, run df -h and confirm you have enough free space

Best practices:

  • Always verify the md5sum of any downloaded file from VMware
  • Never put files on the Log Insight virtual appliance root filesystem


As you can see, upgrading Log Insight is very straightforward. The errors and best practices explained in this post apply to all VMware products and not just Log Insight. Happy upgrading!

© 2014 – 2021, Steve Flanders. All rights reserved.

One comment on “Log Insight Upgrade: Errors and Best Practices

Appliance Masters says:

Thanks for showing me how to fix this. You rock!

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