disappointed consider using alternatives, TablePlus is good.
https://yum.postgresql.org/repopackages.php https://download.postgresql.org/pub/repos/yum/11/fedora/fedora-28-x86_64/pgdg-fedora11-11-2.noarch.rpm rpm -ivh pgdg-fedora11-11-2.noarch.rpm
yum install pgadmin4
vi /etc/httpd/conf/httpd.conf :$ IncludeOptional /data/www/conf/*.conf
mkdir -p /data/www/conf cp /etc/httpd/conf.d/pgadmin4.conf.sample /data/www/conf/01-pgadmin.conf vi /data/www/conf/01-pgadmin.conf
#(not needed, yet)semanage fcontext -a -t httpd_sys_content_t "/data/www(/.)?" semanage fcontext -a -t httpd_config_t "/data/www/conf(/.)?" semanage fcontext -l | grep /data/www restorecon -R -v /data/www
https://linuxhint.com/install-pgadmin4-ubuntu/ http://yallalabs.com/linux/how-to-install-pgadmin-4-in-server-mode-on-ubuntu-16-04-lts/
Books: