使用保存的密码将psql从远程计算机连接到远程postgres数据库

Question

I am working on a remote Unix machine where I connect via SSH from my local machine. There is a Postgres database on another host that I need to connect from my remote machine using psql.

I would like to be able to run queries from an input file and save the results to an output file, however I did not manage to automatically set the password, surpassing the need to do it every time I run a query.

I tried the following:

1. Run

    psql "user=username password=password host=hostname port=port dbname=database"` 

   with my username , password , hostname , port and database values. This worked OK but I did not find a way to add arguments for input/output files (not needing to go through Postgres interactive environment).

2. According to another SO question , I created a file ~/.pgpass with the following format: hostname:port:database:username:password

   and then chmod 0600 ~/.pgpass but when connecting as: psql -h hostname -U username -d database -w psql ignored this (I got the following failed authentication message.)

   psql: fe_sendauth: no password supplied.

   Note that my remote machine's name is different than my username, so this might also create a problem when creating the .pgpass file. Is there any other way to do it?

Any ideas?

Answer 1

This worked OK but I did not find a way to add arguments for input/output files

You can either redirect the input file to psql, or specify it in -f option:

psql < input.sql
psql -f input.sql

As for output file, just redirect psql's output to it:

psql -f input.sql > output.txt