如何在pg电子美杜莎中设置主从复制pg电子美杜莎如何

pg电子美杜莎是一款功能强大的数据库管理系统，支持多种数据库连接协议，包括MySQL、PostgreSQL、Oracle、SQLite等多种类型，主从复制是 pg电子美杜莎 中非常实用的功能，允许将主数据库的数据复制到从数据库中，或者将从数据库的数据同步到主数据库，本文将详细介绍如何在 pg电子美杜莎 中设置主从复制。

安装和配置 pg电子美杜莎主从复制

安装 pg电子美杜莎

需要在服务器上安装 pg电子美杜莎，以下是安装 pg电子美杜莎的一般步骤：

1 安装依赖项

安装 pg电子美杜莎需要一些必要的依赖项,包括：

• libpq：PostgreSQL 插件库
• pgdata：PostgreSQL 数据文件
• pgxntrp：PostgreSQL 脚本解析器

这些依赖项可以通过系统 package 管理器安装，在 CentOS 系统上,可以使用以下命令安装：

sudo yum install libpq pgdata pgxntrp

2 安装 pg电子美杜莎

安装 pg电子美杜莎的命令取决于具体的发行版，在 CentOS 系统上，可以使用以下命令安装 pg电子美杜莎：

sudo yum install postgresql

安装完成后，系统会自动生成 pg电子美杜莎 的配置文件，位于 /etc/postgresql/10/main/postgresql.conf。

3 配置 pg电子美杜莎

在 pg电子美杜莎 配置文件中，可以设置一些基本参数,包括：

• 数据库名称：DB_NAME
• 数据库用户：DB_USER
• 数据库密码：DB_PASSWORD
• 数据库地址：DB_HOST
• 数据库端口：DB_PORT

默认情况下，pg电子美杜莎 会使用 postgres 作为默认数据库名称，postgres 用户，地址为 localhost，端口为 5432。

启用主从复制功能

在 pg电子美杜莎 中启用主从复制功能，可以通过配置 pg电子美杜莎 的 postgresql.conf 文件来实现。

1 添加主从复制配置

在 postgresql.conf 文件中,添加以下配置：

[postgresql]
...
shared volum
  driver = pgvss
  protocol = vss
  protocol_path = /var/lib/postgresql/data/vss
  user = postgres
  host = 127.0.0.1
  port = 5432
  max_connections = 10
  max_parallel = 10
  max_parallel_read = 10
  max_parallel_write = 10
  max_parallel committing = 10
  max_parallel rolling = 10
  max_parallel wait idle = 10
  max_parallel wait timeout = 5
  max_parallel wait retries = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
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  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
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  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
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  max_parallel wait max time = 5
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  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
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  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
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  max_parallel wait max time = 5
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  max_parallel wait max attempts = 5
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  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries = 5
  max_parallel wait max time = 5
  max_parallel wait max attempts = 5
  max_parallel wait max time = 5
  max_parallel wait max retries =