Preparations
Make sure that the installation host can establish a connection to the Internet to download software packages via YUM. Checkout the repository download site [YUM PgSQL Repository] and note down the complete URL of the required RPM package for your desired architecture. This URL has to be used in step 2 below.
In the following example a 64-bit RHEL 7 compatible system (CentOS) is used.
Installation steps
Execute the following steps to install the base software.
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Log in as a user with enough permissions to install packages via YUM.
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Adjust the highlighted part in the following illustration, so it reflects the matching package for your architecture, and then execute the yum install command:
yum install -y "https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm"
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Adjust the highlighted part (with your PostgreSQL version number if it is different from 12) and execute the yum install command for PostgreSQL server:1
yum install -y postgresql12-server
The installation will create a system account “postgres” who will be the owner of the database system files. By default this account is locked and cannot be used to log in.