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+---
+title: "CentOS7 安装 Postgresql"
+date: 2019-10-30T00:48:54+08:00
+lastmod: 2019-11-04T02:03:00+08:00
+keywords: []
+tags: ["postgresql"]
+categories: ["database"]
+---
+
+# 环境
+- CentOS 7
+- PostgreSQL 10.10
+
+# 安装
+- 安装 yum 源
+    ```bash
+    yum install https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm
+    # 或者从清华镜像站下载
+    yum install https://mirrors.tuna.tsinghua.edu.cn/postgresql/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm
+    # 可以更换成清华镜像站地址
+    sed -i 's,download.postgresql.org/pub,mirrors.tuna.tsinghua.edu.cn/postgresql,' /etc/yum.repos.d/pgdg-redhat-all.repo
+    # 更新 yum 缓存
+    yum clean all
+    yum makecache fast
+    ```
+- 安装 postgresql-server
+    ```bash
+    yum install postgresql10-server
+    ```
+- 初始化数据库
+    ```bash
+    /usr/pgsql-10/bin/postgresql-10-setup initdb
+    ```
+- 启动数据库
+    ```bash
+    systemctl start postgresql-10
+    ```
+
+# 配置 postgresql.conf
+- 监听本机全部地址
+    ```
+    clisten_addresses = '*'
+    ```
+
+# 配置 pg_hba.conf
+- 配置同网段客户端可通过 pguser1 使用密码登陆 pgdb1
+    ```bash
+    echo 'host pgdb1 pguser1 samenet md5' >> pg_hba.conf
+    ```
+- 配置任何客户端可通过任何用户使用密码登陆任何数据库
+    ```bash
+    echo 'host all all all md5' >> pg_hba.conf
+    ```
+
+# 简单使用
+- 登陆数据库
+    ```bash
+    su - postgres
+    psql -U postgres
+    ```
+- 简单操作
+    ```sql
+    -- 修改 postgres 用户的默认密码
+    alter user postgres with password '123456';
+    -- 创建新用户 pguser1
+    create user pguser1 with password '123456';
+    -- 创建数据库 pgdb1
+    create database pgdb1 owner pguser1 encoding utf8;
+    -- 授权
+    grant all on database pgdb1 to pguser1;
+    -- 查看系统操作帮助
+    \?
+    -- 查看 sql 语句操作帮助
+    \h
+    -- 查看建库语句操作
+    \h create database
+    -- 退出数据库
+    \q
+    ```
+
+# 迁移数据库目录
+- 停止数据库 postgresql
+    ```bash
+    systemctl stop postgresql-10
+    ```
+- 移动数据库目录
+    ```bash
+    mkdir -p /data/pgsql/10
+    mv /var/lib/pgsql/10/data /data/pgsql/10/
+    chown -R postgres.postgres /data/pgsql
+    ```
+- 修改 service 文件
+    ```bash
+    sed -i 's,/var/lib/pgsql/10,/data/pgsql/10,' /usr/lib/systemd/system/postgresql-10.service
+    systemctl daemon-reload
+    ```
+- 启动数据库
+    ```bash
+    systemctl start postgresql-10
+    ```
+