在 OS X Yosemite 升级、自制软件后，Postgresql 服务器将无法启动

Question

重现错误的步骤：

• brew uninstall postgresql
• brew prune
• brew install postgresql
• 运行 postgresql 启动命令
• psql

产量：

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"?

我尝试过但不起作用的建议修复：

create missing symbolic link:

• sudo mkdir /var/pgsql_socket/
• sudo ln -s /private/tmp/.s.PGSQL.5432 /var/pgsql_socket/

删除 postmaster.pid 文件（与上面相同的链接）：

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

create potentially "cleaned up" directories from upgrade:

• mkdir -p /usr/local/var/postgres/{pg_tblspc,pg_twophase,pg_stat_tmp}/ touch /usr/local/var/postgres/{pg_tblspc,pg_twophase,pg_stat_tmp}/.keep

Related GitHub issue

编辑 1：

This article 正确推测有多个版本的 postgres 在使用中，并且必须指定哪个pg_ctl（如下）。奇怪的是/usr/local/var中有两个目录：postgre&postgres。如果有人知道要更新哪些设置以直接使用正确的pg_ctl 命令，我将不胜感激！

/usr/local/Cellar/postgresql/9.3.5_1/bin/pg_ctl -D /usr/local/var/postgre start

Answer 1

我遇到了同样的问题，在查看日志文件后发现缺少一个目录：

$ tail /usr/local/var/postgres/server.log
FATAL:  could not open directory "pg_tblspc": No such file or directory

然后我做了$ mkdir /usr/local/var/postgres/pg_tblspc，重启了PostgreSQL，得到了：

$ tail /usr/local/var/postgres/server.log
FATAL:  could not open directory "pg_replslot": No such file or directory

重做该过程后，我可能会创建以下目录，然后成功启动 PostgreSQL：

/usr/local/var/postgres/pg_tblspc
/usr/local/var/postgres/pg_replslot
/usr/local/var/postgres/pg_twophase
/usr/local/var/postgres/pg_logical
/usr/local/var/postgres/pg_logical/mappings

我希望这会有所帮助。