如何在副本服务器 postgresql-13 中启用写入选项？

Question

我有 2 个数据库服务器：10.1.1.49 - master 和 10.1.1.68 - slave。第一个是 prod，第二个分别是 dev server。我需要将数据从生产服务器复制到开发服务器，我还需要能够将一些数据写入开发服务器。

当我将这些服务器配置为主从复制成功时。但是当我在开发服务器 10.1.1.49 中关闭只读选项并启用读写选项时，复制不再起作用。你能帮忙解决这个问题吗？我的配置如下。

在主 10.1.1.49 (prod) 服务器中：

• pg_hba.conf：

# TYPE  DATABASE        USER            ADDRESS                 METHOD
# "local" is for Unix domain socket connections only
local   all             all                                     peer
# IPv4 local connections:
host    all             all             127.0.0.1/32            scram-sha-256
host    all             all             10.1.1.0/24             md5
# IPv6 local connections:
host    all             all             ::1/128                 scram-sha-256
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     all                                     peer
host    replication     all             127.0.0.1/32            scram-sha-256
host    replication     all             ::1/128                 scram-sha-256
host    replication     postgres        10.1.1.68/24            md5

• postgresql.conf：

listen_addresses = '*'
wal_level = hot_standby
archive_mode = on
archive_command = 'cd .'
max_wal_senders = 8
hot_standby = on

在从属 10.1.1.68 服务器 (dev)

# TYPE  DATABASE        USER            ADDRESS                 METHOD
# "local" is for Unix domain socket connections only
local   all             all                                     peer
# IPv4 local connections:
host    all             all             127.0.0.1/32            scram-sha-256
host    all             all             10.1.1.0/24             md5
# IPv6 local connections:
host    all             all             ::1/128                 scram-sha-256
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     all                                    peer
host    replication     all             127.0.0.1/32            scram-sha-256
host    replication     all             ::1/128                 scram-sha-256
host    replication     postgres        10.1.1.49/24            md5

• postgresql.conf：

listen_addresses = '*'
wal_level = hot_standby
archive_mode = on
archive_command = 'cd .'
max_wal_senders = 8
hot_standby = on

将数据从主服务器复制到从服务器时执行的命令： 在从服务器中：

rm -rf data; mkdir data; chmod go-rwx data
pg_basebackup -P -R -X stream -c fast -h 10.1.1.49 -U postgres -D ./data

Answer 1

您无法写入流式复制备用服务器。你需要的是logical replication。