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首页 > 解决方案 > 服务器是否在本地运行并接受 Unix 域套接字“/var/run/postgresql/.s.PGSQL.5432”上的连接？

postgresql - 服务器是否在本地运行并接受 Unix 域套接字“/var/run/postgresql/.s.PGSQL.5432”上的连接？

问题描述

执行以下命令时遇到主题中的错误。

heroku run python manage.py db upgrade

conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) could not connect to server: No such file or directory
        Is the server running locally and accepting
        connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?

该应用程序在本地服务器上完美运行，但不会使用 postgres db 迁移到 heroku。

尝试了无数的解决方案，还没有任何效果。

启动数据库时，以下是出现的消息

aiting for server to start....2020-10-11 20:14:58.637 +04 [11244] LOG:  starting PostgreSQL 13.0 on x86_64-apple-darwin19.4.0, compiled by Apple clang version 11.0.0 (clang-1100.0.33.8), 64-bit
2020-10-11 20:14:58.641 +04 [11244] LOG:  listening on IPv6 address "::1", port 5432
2020-10-11 20:14:58.641 +04 [11244] LOG:  listening on IPv4 address "127.0.0.1", port 5432
2020-10-11 20:14:58.644 +04 [11244] LOG:  listening on Unix socket "/tmp/.s.PGSQL.5432"
2020-10-11 20:14:58.672 +04 [11246] LOG:  database system was interrupted; last known up at 2020-10-11 20:11:13 +04
2020-10-11 20:14:59.020 +04 [11246] LOG:  database system was not properly shut down; automatic recovery in progress
2020-10-11 20:14:59.034 +04 [11246] LOG:  redo starts at 0/1671320
2020-10-11 20:14:59.034 +04 [11246] LOG:  invalid record length at 0/1671358: wanted 24, got 0
2020-10-11 20:14:59.034 +04 [11246] LOG:  redo done at 0/1671320
2020-10-11 20:14:59.067 +04 [11244] LOG:  database system is ready to accept connections
 done
server started

标签： postgresqlflask

解决方案

您只需要重新启动服务器的 psql。小心这个数据库：

sudo service postgresql restart

我突然遇到了同样的错误。它解决了。它与 psycopg2.connect(dsn) 无关

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