postgresql-12

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

#PostgreSQLのインストール
sudo yum -y install postgresql12-server postgresql12-contrib

#PostgreSQLの初期化
sudo /usr/pgsql-12/bin/postgresql-12-setup initdb

#PostgreSQLの自動起動設定
sudo systemctl enable postgresql-12

#Postgresql.confの設定
sudo chmod 777 /var/lib/pgsql/
sudo chmod 777 /var/lib/pgsql/12/
sudo chmod 777 /var/lib/pgsql/12/data
sudo chmod 777 /var/lib/pgsql/12/data/postgresql.conf

#Postgresql.confの設定
sudo vi /var/lib/pgsql/12/data/postgresql.conf

#localhostのコメントアウトを解除する設定

pg_hba.confの設定
sudo chmod 777 /var/lib/pgsql/12/data/pg_hba.conf

# "local" is for Unix domain socket connections only
local   all             all                                     trust
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
# IPv6 local connections:
host    all             all             ::1/128                 trust
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local   replication     all                                     peer
#host    replication     all             127.0.0.1/32            ident
#host    replication     all             ::1/128                 ident

#アクセス権限の再設定

sudo chmod 700 /var/lib/pgsql/12/data

#PostgreSQLの再起動
sudo systemctl restart postgresql-12