Fault: During the installation process of redis, mysql, etc. on the server, the following functions cannot be installed: .NET Framework 3.5 (including .NET 2.0 and 3.0), which may cause the monitoring installation to fail.
Analysis: The corresponding installation package is missing during system installation.
Solution: Copy the "sxs" installation package folder to the local - open the server manager - select "Add roles and features" - next step - select "role-based or feature-based installation" - next step - "select a server from the server pool" ”—Next step—Next step—Check “.NET Framework 3.5 features”—Next step—Select “Specify alternative source path”—Select the folder path according to the example—Click “Install”—Complete the installation
sxs file download link: