如何在Mac OS X上啓動PostgreSQL服務器？ - How to start PostgreSQL server on Mac OS X?

問題：

FINAL UPDATE: 最終更新：

I had forgotten to run the initdb command. 我忘了運行initdb命令。

< /FINAL UPDATE> </ FINAL UPDATE>

by running this command 經過運行此命令

ps auxwww | grep postgres

I see that postgres is not running 我看到postgres沒有運行

> ps auxwww | grep postgres
remcat          1789   0.0  0.0  2434892    480 s000  R+   11:28PM   0:00.00 grep postgres

this raises the question: How do I start the postgresql server? 這引出了一個問題：如何啓動postgresql服務器？

update: 更新：

>pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start
server starting
sh: /usr/local/var/postgres/server.log: No such file or directory

update 2: 更新2：

The touch was not successful so I did this instead: 觸摸不成功因此我這樣作了：

> mkdir /usr/local/var/postgres
> vi /usr/local/var/postgres/server.log
> ls /usr/local/var/postgres/          
server.log

But when I try to start rails server, I still see this: 可是當我嘗試啓動rails服務器時，我仍然看到：

Is the server running on host "localhost" and accepting
TCP/IP connections on port 5432?

update 3: 更新3：

> pg_ctl -D /usr/local/var/postgres status
pg_ctl: no server running

update 4: 更新4：

I found that there WAS NO pg_hba.conf (only pg_hba.conf.sample) so I modified the sample and renamed it (to remover the .sample). 我發現沒有pg_hba.conf（只有pg_hba.conf.sample）因此我修改了樣本並將其重命名（以移除.sample）。 Here are the contents: 如下是內容：

# IPv4 local connections:
 host    all             all             127.0.0.1/32           trust
 # IPv6 local connections:
 host    all             all             ::1/128                trust

but I don't understand this: 但我不明白這個：

> pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start     
server starting
> pg_ctl -D /usr/local/var/postgres status                                     
pg_ctl: no server running

also: 也：

sudo find / -name postgresql.conf
find: /dev/fd/3: Not a directory
find: /dev/fd/4: Not a directory

update 5: 更新5：

sudo pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start
Password:
pg_ctl: cannot be run as root
Please log in (using, e.g., "su") as the (unprivileged) user that will own the server process.

update 6: 更新6：

this seems odd: 這看起來很奇怪：

> egrep 'listen|port' /usr/local/var/postgres/postgresql.conf
egrep: /usr/local/var/postgres/postgresql.conf: No such file or directory

though, I did do this: 不過，我這樣作了：

>sudo find / -name "*postgresql.conf*"
find: /dev/fd/3: Not a directory
find: /dev/fd/4: Not a directory
/usr/local/Cellar/postgresql/9.0.4/share/postgresql/postgresql.conf.sample
/usr/share/postgresql/postgresql.conf.sample

so I did this: 因此我這樣作了：

egrep 'listen|port' /usr/local/Cellar/postgresql/9.0.4/share/postgresql/postgresql.conf.sample 
#listen_addresses = 'localhost'     # what IP address(es) to listen on;
#port = 5432                # (change requires restart)
                # supported by the operating system:
                #   %r = remote host and port

so I tried this: 因此我試過這個：

> cp /usr/local/Cellar/postgresql/9.0.4/share/postgresql/postgresql.conf.sample /usr/local/Cellar/postgresql/9.0.4/share/postgresql/postgresql.conf        
> cp /usr/share/postgresql/postgresql.conf.sample /usr/share/postgresql/postgresql.conf

still getting the same "Is the server running?" 仍然是相同的「服務器正在運行嗎？」 message. 信息。

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解決方案：

參考一： https://stackoom.com/question/XSo0/如何在Mac-OS-X上啓動PostgreSQL服務器
參考二： https://oldbug.net/q/XSo0/How-to-start-PostgreSQL-server-on-Mac-OS-X