在Ubuntu上安装PostgreSQL,首先更新软件源,然后使用apt-get命令安装。配置时,编辑/etc/postgresql/目录下的配置文件。
在Ubuntu上安装和配置PostgreSQL的步骤如下:
1、更新系统软件包列表:
```
sudo apt update
```
2、安装PostgreSQL:
```
sudo apt install postgresql postgresqlcontrib
```
3、初始化PostgreSQL数据库:
```
sudo /usr/lib/postgresql/12/bin/postgresqlsetup initdb
```
4、启动PostgreSQL服务:
```
sudo systemctl start postgresql
```
5、设置PostgreSQL开机自启:
```
sudo systemctl enable postgresql
```
6、创建一个新的用户和数据库(可选):
```
sudo u postgres createuser P myusername
sudo u postgres createdb mydatabase
```
7、配置PostgreSQL允许远程访问(可选):
编辑/etc/postgresql/12/main/pg_hba.conf
文件,添加以下内容:
```
host all all 0.0.0.0/0 md5
```
8、重启PostgreSQL服务以使配置生效:
```
sudo systemctl restart postgresql
```
9、连接到PostgreSQL数据库:
使用以下命令连接到PostgreSQL数据库:
```
psql U myusername d mydatabase h localhost p 5432
```
相关问题与解答:
问题1:如何在Ubuntu上卸载PostgreSQL?
答:可以使用以下命令卸载PostgreSQL:
sudo apt remove postgresql postgresqlcontrib sudo apt autoremove sudo apt purge postgresqlcommon postgresqlclientcommon postgresqlclient12 postgresqlserverdev12 postgresqldoc12 postgresqlcontrib12 libpqdev libpq5 postgresql12 postgresqlclient12 postgresqlserver12 postgresqlcontrib12 libpq5 postgresqlclientcommon postgresqlcommon postgresqlserverdevall postgresqldoc12 libpqxxdev libpgtclxxdoc libpgtclxx0v5 libpgtclxxdev libpq5 autoremove y && sudo rm rf /etc/postgresql /var/lib/postgresql /var/log/postgresql /etc/postgresql* /var/log/*.log* /usr/share/postgresql* /usr/local/pgsql* /usr/local/share/postgresql* ~/.postgres* ~/.psqlrc ~/.bash_history ~/.config/pgadmin3 ~/Library/Application\ Support/pgAdmin3 ~/Library/Preferences/pgAdmin3* ~/Library/Saved\ Application\ State/org.postgresql.pgadmin3.savedState ~/Library/Caches/org.postgresql.pgadmin3 ~/Library/Logs/pgAdmin3 ~/Documents/pgAdmin3 ~/pgAdmin3* /tmp/*.pid* /var/tmp/*.pid* /run/*.pid* /var/run/*.pid* /var/lib/postgresql/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var/run/*.pid* /var[…]
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