How Can I Install the PostgreSQL Client?

Procedure

1. Log in to an ECS.
   1. When you create an ECS, select an OS like CentOS 7 and bind an EIP to it.
   2. Use a remote connection tool to connect to the ECS through the EIP.

2. Open the client installation page.
3. Select a DB engine version, OS, and OS architecture, and run the following commands on the ECS to install a PostgreSQL client.

   sudo yum install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm
   sudo yum install -y postgresql12-server

   Figure 1 Installing a client
   
   • Select a DB engine version that is consistent with that of your RDS for PostgreSQL instance.
   • Select an OS that is consistent with that of the ECS.
   • Select an OS architecture that is consistent with that of the ECS.
   Figure 2 Installing the RPM package
   
   Figure 3 Client installed
   

4. Connect to the RDS for PostgreSQL instance.
   Figure 4 Connection successful