resinstall postgresql centos 7 code example
Example 1: how to install postgresql on centos 7
sudo yum install https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm
Example 2: install postgresql 10 centos 7
# systemctl enable postgresql-10.service
# systemctl start postgresql-10.service