Centos 7.9 install PostgreSQL14.4 steps

PostgreSQLInstallation steps

(1) Environment description

System: Centos 7.9

Software: PostgreSQL 14.4

(2) Software download

https://www.postgresql.org/ftp/source/v14.4/postgresql-14.4.tar.gz

(3) Unzip the database installation package

tar -zxvf postgresql-14.4.tar.gz

(4) Compile

 cd postgresql-14.4/./configure --prefix=/usr/local/postgresql

(5) Installation

make && make install

(6) Create directories data, log

mkdir /usr/local/postgresql/datamkdir /usr/local/postgresql/log

(7) Add user postgres and empower

useradd postgreschown -R postgres.postgres /usr/local/postgresql

(8) Modify the system environment variables of the postgres user

su - postgresvi.bash_postgres

Write the following at the end

export PGHOME=/usr/local/postgresqlexport PGDATA=/usr/local/postgresql/dataexport PGLIB=/usr/local/postgresql/libexport PATH=$PATH:$HOME/bin:$PGHOME/binexport LC_ALL=en_US.UTF8export LANG=en_US.UTF8

Make the configuration file take effect

.bash_profile

(9) Initialize the database

su postgres/usr/local/postgresql/bin/initdb -D /usr/local/postgresql/data/

(10) Modify the configuration file

vim /usr/local/postgresql/data/pg_hba.conf

Add a line at the end of the file

host all all 0.0.0.0/0 trust

Description:

TYPE: pg connection method, local: local unix socket, host: tcp/ip connection

DATABASE: specify the database

USER: Specifies the database user

ADDRESS: ip address, which can define a certain host or a certain network segment, 32 means check the entire ip address, which is equivalent to a fixed ip, 24 means only check the first three bits, and the last bit is between 0 and 255any one

METHOD: Authentication method, commonly used are ident, md5, password, trust, reject.

        md5 is a commonly used password authentication method.

The password is a plaintext password sent to the database. It is not recommended to use it in a production environment.

      trust is that you can log in as long as you know the database user name. It is not recommended to use it in a production environment.

reject is to reject authentication.

(11) Start the service

pg_ctl start -l /usr/local/postgresql/log/pg_server.log

(12) Login to the database

psql -U postgres -d postgrespsql (14.4)Type "help" for help.postgres=#