I ran into an issue on my Mac Mini today while setting up for a development footprint for a Rails 4 project I'm starting to work on this week. This new project requires Postgres which I have not used before. I ran into a snag installing it on my Mac Mini which is running OS X version 10.8.5
I proceeded to use homebrew to install by preforming these steps:
brew install postgres
In typical fashion the recipe presented some notes about continuing the setup. The next steps were:
initdb /usr/local/var/postgres -E utf8
ln -sfv /usr/local/opt/postgresql/*.plist ~/Library/LaunchAgents
launchctl load ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist
Then I needed to use the postgres client to create a user and new database. When I issued the command
psql -d template1
I received the following error:
psql: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/var/pgsql_socket/.s.PGSQL.5432"?
The initial indication here is that postgres wasn't running. This post suggests verifying that by using the command:
ps auxw | grep post
and confirming that postgres was actually running. In my case it definitely was running. Several processes were matched.
Then I stumbled across numerous post suggesting that the PATH was set wrong. That possibly Mac OS X Mountain Lion actually has pre-installed a postgres client that looks in a different place for the connection socket. I don't know if that's true or not. However, unfortunately for me, it turns out that I was actually running an older / different version of the client located in /usr/bin instead of the newly installed on from homebrew located in /usr/local/bin
You can check by the command:
and for me that result was /usr/bin
In my case the /usr/bin directory is in my PATH prior to the /usr/local/bin so rather than reverse that (like I probably should) I opted not to have any other surprises by a PATH change and simply copied the new psql client from /usr/local/bin to /usr/local
Hopefully this helps someone recover from this issue quickly.
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