PG错误无法连接到服务器:连接被拒绝服务器是否在端口5432上运行? [英] PG Error could not connect to server: Connection refused Is the server running on port 5432?

问题描述

我最近更新了我的机器(运行Mountain Lion的MacBook Pro)，从那时起，每当我设置Rails项目时，我的机器就会崩溃并且无法连接到PG.当前，这是我尝试转到localhost时遇到的错误；

I recently updated my machine (MacBook Pro running Mountain Lion) and ever since then, whenever I set up a rails project, my machine craps out and cannot connect to PG. Currently, this is the error I am getting when I try to go to localhost;

PG :: ERROR无法连接到服务器:连接被拒绝服务器是否在主机"localhost"上运行
(:: 1)并在端口5432上接受TCP/IP连接?无法连接到服务器:Connection
拒绝服务器是否在主机"localhost"(127.0.0.1)上运行并在端口5432上接受TCP/IP连接?无法连接到服务器:连接被拒绝服务器是否在主机"localhost"(fe80 :: 1)上运行并在端口5432上接受TCP/IP连接?

PG::ERROR could not connect to server: Connection refused Is the server running on host "localhost"
(::1) and accepting TCP/IP connections on port 5432? could not connect to server: Connection
refused Is the server running on host "localhost" (127.0.0.1) and accepting TCP/IP connections on port 5432? could not connect to server: Connection refused Is the server running on host "localhost" (fe80::1) and accepting TCP/IP connections on port 5432?

这是一个清单，以及我尝试过的事情的清单；

Here is a checklist, and list of things I have tried;

1. PostgreSQL版本是9.3.4
2. 我通过HomeBrew安装了它
3. 我的database.yml文件中有host: localhost
4. Rails版本4.1.1，ruby 2.0.0p247(2013-06-27修订版41674)[x86_64-darwin12.5.0]
5. 先按brew uninstall postgresql，然后按brew install postgresql
6. 试图访问我的postgres.conf文件，但不允许通过PGAdmin和命令行访问

7. Ran locate pg_hba.conf并枪杀了这个东西；

1. PostgreSQL version is 9.3.4
2. I have it installed through HomeBrew
3. I have host: localhost in my database.yml file
4. Rails version 4.1.1, ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin12.5.0]
5. Ran brew uninstall postgresql then brew install postgresql
6. Tried to access my postgres.conf file but wasn't allowed through PGAdmin and command line

7. Ran locate pg_hba.conf and terminal shot this out;

WARNING: The locate database (/var/db/locate.database) does not exist.

我也尝试过使用Rails 4.0，但仍然遇到问题

I have also tried using rails 4.0 but I still get the problem

在更新计算机之前，我仍然可以在计算机上已启动/完成的其他项目上工作.

I can still work on other projects on my machine that were started/finished before I updated my computer.

当我从终端运行psql时，我得到了 psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.5432"?

When I run psql from my terminal I get psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.5432"?

我真的在这里迷路了，不知道该怎么办.任何帮助将不胜感激.

I am really lost here, and am not sure what else to do. Any help would be much appreciated.

更新:

感谢此问题，只需下载Mac的 Postgres.app 即可解决所有问题.现在一切都很好.

Thanks to this question, all was resolved by simply downloading Postgres.app for Mac. Everything works great now.

推荐答案

这比您想像的要容易得多，因为如果更新Mac，则进程正在运行，但此处/usr/local/var/postgres/中缺少postmaster.pid文件.因此，您需要启动创建postmaster.pid的postgres的过程.

This is quite easy than your think because If you update your mac then process is running but postmaster.pid file is missing from /usr/local/var/postgres/ here. so you need to start process for postgres which create postmaster.pid.

如果进度正在运行，则-

If progress is running then -

手动停止:

pg_ctl -D /usr/local/var/postgres stop -s -m fast

手动开始:

pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start

现在所有人都在工作...

now all are working...

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