Since this guide sets up Push Replications, the replications will only go one way. Bi-Directional Push Replications will cause serious problems, such as unintended deletions on the Source Artifactory's data. As such, this guide will only set up one way replications, an Active / Active in-sync cluster can be achieved via High Availability or other measures.
This guide has been tested on Artifactory 6.X and 7.X. The mechanisms involved have not changed significantly since Artifactory 5.X.