After upgrading Puppet Enterprise, some agent nodes either revert to an old package or are not upgraded

You upgraded Puppet Enterprise using the puppetlabs-puppet_agent module, but some of your agent nodes either revert to an earlier version or are not upgraded.

Version and installation information

PE version: All supported

Solution

If the wrong version of the agent package is installed on your agents, either puppet_agent is configured to use the wrong version of the agent package, or your compilers are not upgraded and are serving the wrong version of the package to your agent nodes.

1. Check the package_version parameter for the code applying the puppet_agent class. If it’s set to an earlier version of the agent package, edit the parameter value to set the correct version.

2. If the package_version parameter is set to auto or to the correct version number, check your compilers to see if they are upgraded.

   On each compiler:

   A. Check the version number of the package by running facter -p pe_build

   B. Check to make sure that the current folder in the folder where the packages are served softlinks to the correct version of the package. Run

   ls -ltrh /opt/puppetlabs/server/data/packages/public/

   Your output should look similar to:

   lrwxrwxrwx. 1 root root 52 Jun 21 10:23 current -> /opt/puppetlabs/server/data/packages/public/2021.6.0

3. If the version number is not correct, your compiler is serving old packages to your nodes. Resolve any upgrade issues with your compilers.