使用自制程序安装 PostgreSQL 时出错

Question

我正在使用 Mac OS X 10.8.5 并尝试使用自制软件安装 postgreSQL。我修复了运行brew info postgresql 时发生的几个错误和警告。但是，我不知道如何解决其余问题。

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$brew 信息 postgresql

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postgresql: stable 9.3.2 (bottled)\nhttp://www.postgresql.org/\nConflicts with: postgres-xc\n/usr/local/Cellar/postgresql/9.3.2 (2924 files, 40M) *\n  Poured from bottle\nFrom: https://github.com/Homebrew/homebrew/commits/master/Library/Formula/postgresql.rb\n==> Dependencies\nRequired: readline \xe2\x9c\x94\nRecommended: ossp-uuid \xe2\x9c\x94\n==> Options\n--32-bit\n    Build 32-bit only\n--enable-dtrace\n    Build with DTrace support\n--no-perl\n    Build without Perl support\n--no-tcl\n    Build without Tcl support\n--without-ossp-uuid\n    Build without ossp-uuid support\n--without-python\n    Build without python support\n==> Caveats\nIf builds of PostgreSQL 9 are failing and you have version 8.x installed,\nyou may need to remove the previous version first. See:\n  https://github.com/Homebrew/homebrew/issues/issue/2510\n\nTo migrate existing data from a previous major version (pre-9.3) of PostgreSQL, see:\n  http://www.postgresql.org/docs/9.3/static/upgrading.html\n\nWhen installing the postgres gem, including ARCHFLAGS is recommended:\n  ARCHFLAGS="-arch x86_64" gem install pg\n\nTo install gems without sudo, see the Homebrew wiki.\n\nTo have launchd start postgresql at login:\n    ln -sfv /usr/local/opt/postgresql/*.plist ~/Library/LaunchAgents\nThen to load postgresql now:\n    launchctl load ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist\nOr, if you don\'t want/need launchctl, you can just run:\n    postgres -D /usr/local/var/postgres\n

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当我运行服务器时，我得到：

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/usr/local/rvm/gems/ruby-2.0.0-p353/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql_adapter.rb:825:in `initialize\': could not connect to server: No such file or directory (PG::ConnectionBad)\n    Is the server running locally and accepting\n    connections on Unix domain socket "/var/pgsql_socket/.s.PGSQL.5432"?\n

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我已经卸载了 postgresql 并重新安装，但似乎无法删除 postgresql 8.x 版本。

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我已经阅读了几篇不同的文章来正确安装和运行 postgreSQL，并尝试了他们的建议，但似乎没有任何效果对我有用。

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Answer 1

您的 Ruby 代码显然与 PostgreSQL 的系统版本相关联，后者在/var/pgsql_socket. Homebrew 版本将查找/tmp. （此时，请确保存在类似的文件。）要解决此问题，您可以通过指定“host”选项/tmp/.s.PGSQL.5432来告诉您的代码连接到 Homebrew 版本，但您的代码是这样拼写的。/tmp

将来，请确保您的 Ruby gem 与 Homebrew 版本链接。也许只需卸载并使用正确的路径集重新安装就可以了。