如何启动Postgres服务器？

Question

我实际上已经有这个问题了一段时间,但我终于决定接受它.Postgres最初是使用Brew安装的.

我升级到OSX 10.8.2后收到一个

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"?

键入时出错

$ psql

命令.

我看到以下过程:

$ ps auxw | grep post
Tulsa           59222   0.0  0.2  2483256  14808   ??  Ss   Thu03PM   0:02.61 /System/Library/PrivateFrameworks/DiskImages.framework/Resources/diskimages-helper -uuid 470DA5CC-1602-4D69-855F-F365A6512F90 -post-exec 4
Tulsa           57940   0.0  0.2  2498852  13648   ??  Ss   Wed10PM   0:00.61 /System/Library/PrivateFrameworks/DiskImages.framework/Resources/diskimages-helper -uuid FAFAAAB4-0F67-42C8-864E-EF8C31A42EE3 -post-exec 4
root            24447   0.0  0.1  2476468  10080   ??  Ss    8Feb13   0:03.40 /System/Library/PrivateFrameworks/DiskImages.framework/Resources/diskimages-helper -uuid CC768720-12C2-436C-9020-548C275A6B0C -post-exec 4
Tulsa           74224   0.0  0.0  2432768    596 s002  R+    7:24PM   0:00.00 grep post


$ which psql
/usr/local/bin/psql

$ pg_ctl start 
pg_ctl: no database directory specified and environment variable PGDATA unset
Try "pg_ctl --help" for more information. 

Answer 1

您尚未启动Postgres服务器.Postgres的一些dmg软件包将其设置为在启动时作为服务运行.但是,不是你做了安装.

你需要初始化一个数据目录,启动postgres,然后从那里开始.

initdb /some/directory # just do this ONCE
pg_ctl -D /some/directory start # many other options, e.g. logging, available here
psql postgres

您可以为数据目录设置环境变量,-D稍后您将不需要该标志.你可以稍后查看.