I'm a miner and using ckpool now.I have mined BTCs with standalone before.But I want to ues it with ckdb now.
1)ckdb.sql
2)run sudo ./ckpool
3)run sudo ./ckdb
4)run sudo ckpmsg -n ckdb -s /opt/

I use PHP,but it can't socket_connect /opt/listener

So,what's wrong with it and how to solve.