Re: Trying to solve a SocketError [Errno 13] Permission with PL/Python in PostgreSQL 9.3

Marcos Ortiz <mlortiz(at)uci(dot)cu> writes:
> O.S: CentOS 7 64 bits

> We are working here to integrate PostgreSQL with Neo4j through PL/Python
> using the py2neo module for it, and when we want to send sentences to
> Neo4j using port 7474, the executed code raises a SocketError [Errno 13]
> Permission denied.

> I tested the same code in a normal python script outside of PostgreSQL,
> and it works well, but the problem is when I use the code inside
> PostgreSQL with PL/Python.

Probably SELinux is set up to deny random connections originating from the
postgresql daemon. If disabling SELinux makes the problem go away then
that's it. (I do *not* recommend that as a permanent solution, of course.
You'll want to find some finer-grained change to the security policy.
Don't remember enough about SELinux to know what the most likely bet is.)

regards, tom lane