端口5432被阻止时，来自远程服务器的pg_dump postgres数据库 [英] pg_dump postgres database from remote server when port 5432 is blocked

问题描述

我正在尝试pg_dump我们DMZ中的远程服务器上的SQL数据库。有两个问题。

I'm trying to pg_dump a SQL database on a remote server in our DMZ. There are 2 problems.

1）远程服务器上没有太多空间，因此正常命令运行以本地备份数据库
pg_dump -C数据库> sqldatabase.sql.bak 由于空间问题而无法使用。

1) there is n't a lot of space left on the remote server so the normal command run to locally backup the database pg_dump -C database > sqldatabase.sql.bak won't work due to space issues.

2）我也无法运行其他版本的pg_dump命令，使用以下命令将数据库从远程服务器转储到本地服务器：

2) I also can't run the other version of pg_dump command to dump database from remote server to local server using:

pg_dump -C -h remotehost -U remoteuser db_name | psql localhost -U localuser db_name

，因为服务器位于我们的DMZ中，端口5432被阻止。我希望看到的是是否有可能pg_dump数据库并立即将其（ssh或其他形式）保存为文件到远程服务器。
我正在尝试的是： pg_dump -C testdb | ssh [e-mail] | > /home/admin/testdb.sql.bak

as the server is in our DMZ and port 5432 is blocked. What I'm looking to see is if it is possible to pg_dump the database and immediatly save it (ssh or some other form) as a file to a remote server. What I was trying was: pg_dump -C testdb | ssh [e-mail] | > /home/admin/testdb.sql.bak

有人知道我要实现的目标吗？

Does anyone know if what i am trying to achieve is possible?

推荐答案

您可以使用ssh连接到远程服务器，执行连接pg_dump调用，然后将输出发送回stdout

You can connect with ssh to your remote server, do with the connect the pg_dump call and send the output back to stdout of local machine.

ssh user@remote_machine "pg_dump -U dbuser -h localhost -C --column-inserts" \
 > backup_file_on_your_local_machine.sql

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