Arch Linux安装 PgAdmin4 & PostgreSQL_linux 按照 pgadmin

Arch Linux安装 PgAdmin4 & PostgreSQL

注意这个流程的环境为EXT4！！！
其他文件系统请参阅：PostgreSQL ArchLinux

PgAdmin4

## 安装pip
sudo pacman -S python-pip
sudo mkdir /var/lib/pgadmin
sudo mkdir /var/log/pgadmin
sudo chown $USER /var/lib/pgadmin
sudo chown $USER /var/log/pgadmin
## 如果有安装conda
conda create -n pgadmin
conda activate pgadmin
pip install pgadmin4 --break-system-packages
## 如果没安装conda
python -m venv pgadmin4
source pgadmin4/bin/activate
pip install pgadmin4 --break-system-packages
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---

PostgreSQL

## 安装PostgreSQL
sudo pacman -S postgresql
sudo -iu postgres

## 初始化配置
initdb -D /var/lib/postgres/data
## 创建用户
createuser --interactive
## 创建数据库
createdb 数据库名称
## 启动数据库服务
## 1. 开机自启
sudo systemctl enable --now postgresql
## 1.1 关闭自启
sudo systemctl disable postgresql
## 2. 现在启动但是开机不自启
sudo systemctl start postgresql
## 3. 查看状态
sudo systemctl status postgresql
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注意这里初始化的PostgreSQL并不会有任何认证要求，全部都是 trust ，即不需要密码就可以访问数据库
需要如下修改来启用密码认证

## 编辑器打开 配置文件pg_hba.conf
sudo vim /var/lib/postgres/data/pg_hba.conf
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到最底下，可以看到内容

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "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                                     trust
host    replication     all             127.0.0.1/32            trust
host    replication     all             ::1/128                 trust
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将所有 trust 改为 md5

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     md5
# IPv4 local connections:
host    all             all             127.0.0.1/32            md5
# IPv6 local connections:
host    all             all             ::1/128                 md5
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     all                                     md5
host    replication     all             127.0.0.1/32            md5
host    replication     all             ::1/128                 md5
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若想要进行远程连接，还需要添加如下内容

host    all             all             0.0.0.0/0                 md5
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---

启动PgAdmin4

pgadmin4
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然后会有提示在
http://127.0.0.1:5050启动服务
然后进入浏览器点击
效果如下：