PostgreSQL installation

1. Get installation package

http://www.postgres.cn/v2/download  Download the corresponding source installation package

1. Unzip package

Upload the software package to the server directory

decompression ：tar xjvf postgresql*.bz2 # Extract to a directory

1. Preconfigured

cd potgresql-12.2  # The directory extracted above

./configure --prefix=/opt/pgsql # To be installed to /opt/pgsql

1. Compilation and installation

make world

make install-world

1. Create installation users

useradd postgres -m

1. Create a database data directory and empower the installation user

mkdir /opt/pgsql/data

chown -R postgres:postgres /opt/pgsql/data

1. Set the environment variable

su - postgres

vi .bashrc

Add... At the end of the file ：

export PGDATA=/opt/pgsql/data

export PGHOME=/opt/pgsql

export PATH=$PATH:$PGHOME/bin

1. postgres Initialize database under user

Initdb -D $PGDATA

1. Start database

pg_ctl -D $PGDATA start

1. Create database

createdb testdb #testdb Name the database

1. Log in to the database

psql testdb

Reference resources ：http://www.postgres.cn/v2/download