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Facing issues while doing connection of Postgres to Dataiku, it seems there might be issue with installation. Screenshot attached.
The error you seeing during the PostgreSQL: "Problem running post-install step. Installation may not complete correctly. The database cluster initialization failed." suggests likely a permissions issue during the installation.
This thread https://dba.stackexchange.com/questions/10241/postgresql-the-database-cluster-initialization-failed suggests that you should uninstall and reinstall but as Administrator. When reinstalling make sure to right-click on the installer and "Run as Administrator."