I have been provided a VM on Windows Server OS 2019 for installing my web-app which uses PostgreSQL 9.6.6 as DBMS. As per the documentation at this link, there is There is no support for Microsoft Windows.
Is there a workaround for configuring a "PostgreSQL Witness Server" with or without using repmgr?
I ain't sure But I think the solution to problem comes with PostgreSQL 9.6 installer. At the end of Installation, there is StackBuilder Option to Download additional packages. One of the package is for Downloading Slony.
The documentation on Slony is available at this Link