CentOS offline installation of PostgreSQL12

CentOS offline installation of PostgreSQL12

1. Download the resource pack

1. download link

   www.postgresql.org/download/

2. Scroll to the bottom and click direct download

   

3. Choose your own version (according to your own system)

   

4. click to enter

   

5. Download the four files below

   

2. Install and start

1. ​ Put the four files you just downloaded on your server, and then execute the following commands

   rpm -ivh postgresql12-libs-12.10-1PGDG.rhel7.x86_64.rpm
   rpm -ivh postgresql12-contrib-12.10-1PGDG.rhel7.x86_64.rpm
   rpm -ivh postgresql12-12.10-1PGDG.rhel7.x86_64.rpm 
   rpm -ivh postgresql12-server-12.10-1PGDG.rhel7.x86_64.rpm
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2. Initialize the database

   /usr/pgsql-12/bin/postgresql-12-setup initdb
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3. start the service

   systemctl start postgresql-12
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3. Configuration service

1. Allow other ip access and port number settings

   vi /var/lib/pgsql/12/data/postgresql.conf
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   ​ listen_addresses = '*' means to listen to all ip information

   ​ port = 5432 indicates the port of the service, which can be customized to other ports

2. Modify the IP that is allowed to access (the following configuration allows all IP access)

TYPE	DATABASE	USER	ADDRESS	METHOD
host	all	all	0.0.0.0/0	md5

After the above modification is completed, you need to restart the service to take effect

restart the service

systemctl restart postgresql-12
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Fourth, create users and databases

1. switch to postgres user

   su - postgres
   psql -p 5432
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2. Create database username

   create user test with password '123456';
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3. create database

   create database testdb;
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4. Authorize testdb to test user​

grant all privileges on database testdb to test;
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​

Five, the basic installation configuration has been completed