OSX 10.8 升级后，帖子无法连接到服务器

Question

在最近升级到Mountain Lion之后，我在安装时遇到了问题。

$ rake db:create
>rake db:migratecould 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" (fe80::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?

在互联网上搜索后，我还没有找到这个问题的解决方案。

我找到了一个建议的步骤来帮助识别问题，但在遵循这些步骤后，我不确定如何理解结果或下一步该怎么做。谁能帮忙？

$ pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start
>pg_ctl: another server might be running; trying to start server anyway
>server starting

$ pg_ctl -D /usr/local/var/postgres stop -s -m fast
>pg_ctl: could not send stop signal (PID: 865): No such process

$ pg_ctl status                                                                
>pg_ctl: no server running

$ ps auxw | grep post 
>myuser   19037   2.6  7.7  4388248 324520   ??  S     7:30AM  19:06.02 /Applications/Postbox.app/Contents/MacOS/postbox-bin -psn_0_917728
>myuser   54897   0.1  0.0  2432768    464 s000  R+    1:47PM   0:00.01 grep post

$ cat /usr/local/var/postgres/server.log
>FATAL:  lock file "postmaster.pid" already exists
>HINT:  Is another postmaster (PID 821) running in data directory "/usr/local/var/postgres"?

很乐意提供任何可能有用的其他信息。

Answer 1

尝试删除：

/usr/local/var/postgres/postmaster.pid

这曾经对我有用。