connection to mysql server from clojure

Question

I'm trying to connect to a mysql database from clojure. I'm using the example code taken from: http://corfield.org/blog/post.cfm/connecting-clojure-and-mysql but I'm getting this error:

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
Last packet sent to the server was 0 ms ago.

The mysql server is bound to 127.0.0.1:3306. Changing localhost to 127.0.0.1 in :subname doesn't help. I have set the mysql server to log everything for debugging, and it doesn't even see a connection coming. What am I doing wrong here?

Answer 1

I can connect to the db using mysql -h 127.0.0.1 . But this fails to connect if I change 127.0.0.1 to localhost. my.cnf contains: bind-address = 127.0.0.1 and as I write above, changing to 127.0.0.1 in :subname doesn't help. The thing that did the trick was putting mysqld : ALL : ALLOW in /etc/hosts.allow. I have no idea why this is needed, especially when all the other services that contact the MySQL server work without it.