Running Postgresql 9.3 in an ezjail

To get this working I had to follow these steps:

On the host:

1. sudo echo 'security.jail.sysvipc_allowed=1' >> /etc/sysctl.conf

2. sudo echo 'jail_sysvipc_allow="YES"' >> /etc/rc.conf

3. sudo vi /usr/local/etc/ezjail/JAILNAME

   Change this line:

   export jail_JAILNAME_parameters=""

   to:

   export jail_JAILNAME_parameters="allow.sysvipc=1"

4. Restart the jail:

   sudo ezjail-admin restart JAILNAME