PostgreSQL
CentOS 7
installation
source : https://tecadmin.net/install-postgresql-11-on-centos/
sudo yum install https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm
yum install postgresql${version}-server
/usr/pgsql-${version}/bin/postgresql-${version}-setup initdb
systemctl enable postgresql-${version}.service systemctl start postgresql-${version}.service
postgres=# \password postgres
Upgrade
https://www.postgresql.org/docs/11/upgrading.html