初期費用無料、月額990円から、高速・多機能・高安定レンタルサーバー『エックスサーバー』
taisuke@ubuntuserver:~$ sudo apt -y install postgresql-16
#ローカルホストをリスン
taisuke@ubuntuserver:~$ sudo grep listen_addresses /etc/postgresql/16/main/postgresql.conf
#listen_addresses = 'localhost' # what IP address(es) to listen on;
#認証方式
taisuke@ubuntuserver:~$ sudo grep -v -E "^#|^$" /etc/postgresql/16/main/pg_hba.conf
local all postgres peer
local all all peer
host all all 127.0.0.1/32 scram-sha-256
host all all ::1/128 scram-sha-256
local replication all peer
host replication all 127.0.0.1/32 scram-sha-256
host replication all ::1/128 scram-sha-256
#OS ユーザー追加
taisuke@ubuntuserver:~$ sudo adduser ubuntu
#PostgreSQL 管理ユーザーで PostgreSQL ユーザーとデータベース追加
taisuke@ubuntuserver:~$ sudo su - postgres
postgres@www:~$ createuser ubuntu
postgres@www:~$ createdb testdb -O ubuntu
#確認
postgres@www:~$ psql -c "select usename from pg_user;"
usename
postgres
ubuntu
(2 rows)
postgres@www:~$ psql -l
List of databases
Name | Owner | Encoding | Locale Provider | Collate | Ctype | ICU Locale | ICU Rules | Access privileges
-----------+----------+----------+-----------------+---------+---------+------------+-----------+-----------------------
postgres | postgres | UTF8 | libc | C.UTF-8 | C.UTF-8 | | |
template0 | postgres | UTF8 | libc | C.UTF-8 | C.UTF-8 | | | =c/postgres +
| | | | | | | | postgres=CTc/postgres
template1 | postgres | UTF8 | libc | C.UTF-8 | C.UTF-8 | | | =c/postgres +
| | | | | | | | postgres=CTc/postgres
testdb | ubuntu | UTF8 | libc | C.UTF-8 | C.UTF-8 | | |
(4 rows)
#テスト DB に接続
ubuntu@www:~$ psql testdb
psql (16.2 (Ubuntu 16.2-1ubuntu4))
Type "help" for help.
#ユーザーロール一覧を表示
testdb=> \du
List of roles
Role name | Attributes
-----------+------------------------------------------------------------
postgres | Superuser, Create role, Create DB, Replication, Bypass RLS
ubuntu |
#データベース一覧を表示
testdb=> \l
List of databases
Name | Owner | Encoding | Locale Provider | Collate | Ctype | ICU Locale | ICU Rules | Access privileges
-----------+----------+----------+-----------------+---------+---------+------------+-----------+-----------------------
postgres | postgres | UTF8 | libc | C.UTF-8 | C.UTF-8 | | |
template0 | postgres | UTF8 | libc | C.UTF-8 | C.UTF-8 | | | =c/postgres +
| | | | | | | | postgres=CTc/postgres
template1 | postgres | UTF8 | libc | C.UTF-8 | C.UTF-8 | | | =c/postgres +
| | | | | | | | postgres=CTc/postgres
testdb | ubuntu | UTF8 | libc | C.UTF-8 | C.UTF-8 | | |
(4 rows)
#テストテーブルを作成
testdb=> create table test_table (no int, name text);
CREATE TABLE
#テーブル一覧を表示
testdb=> \dt
List of relations
Schema | Name | Type | Owner
--------+------------+-------+--------
public | test_table | table | ubuntu
(1 row)
#テストテーブルにテストデータを挿入
testdb=> insert into test_table (no,name) values (01,'Ubuntu');
INSERT 0 1
#確認
testdb=> select * from test_table;
no | name
----+--------
1 | Ubuntu
(1 row)
#テストテーブルを削除
testdb=> drop table test_table;
DROP TABLE
testdb=> \dt
Did not find any relations.
#exit する
testdb=> \q
#テストデータベースを削除
ubuntu@www:~$ dropdb testdb
ubuntu@www:~$ psql -l
List of databases
Name | Owner | Encoding | Locale Provider | Collate | Ctype | ICU Locale | ICU Rules | Access privileges
-----------+----------+----------+-----------------+---------+---------+------------+-----------+-----------------------
postgres | postgres | UTF8 | libc | C.UTF-8 | C.UTF-8 | | |
template0 | postgres | UTF8 | libc | C.UTF-8 | C.UTF-8 | | | =c/postgres +
| | | | | | | | postgres=CTc/postgres
template1 | postgres | UTF8 | libc | C.UTF-8 | C.UTF-8 | | | =c/postgres +
| | | | | | | | postgres=
初期費用無料、月額990円から、高速・多機能・高安定レンタルサーバー『エックスサーバー』