I can ping pong Redis on the server:
# redis-cli ping
PONG
But remotely, I got problems:
$ src/redis-cli -h REMOTE.IP ping
Could not connect to Redis at REMOTE.IP:6379: Connection refused
In config, I got the standard port:
# Accept connections on the specified port, default is 6379.
# If port 0 is specified Redis will not listen on a TCP socket.
port 6379
So maybe I should open port 6379 on the remote Ubuntu machine? How do I do it?