There is a IATEMPDIR environment variable that can be used to redirect the location of the installer’s temporary files
After 10.8 is installed, the SSL certificates for secure LDAP has to be reapplied
The default hosts that Postgres 13.x will listen too is “localhost” this has to be updated within the postgresql.conf file to be “*”
The installer and upgrade process requires the destination database to have no users or databases other than the default postgres database/admin accounts
By default, the Postgresql default database has no admin password and has to be set after the pg_hba.conf is set to password/md5