默认 bind 127.0.0.1 即绑定本机 IP，只能本机访问，你也可以绑定别的 IP 地址，如果注释掉，表示不限制 IP，所有 IP 都能访问
# ~~~ WARNING ~~~ If the computer running Redis is directly exposed to the
# internet, binding to all the interfaces is dangerous and will expose the
# instance to everybody on the internet. So by default we uncomment the
# following bind directive, that will force Redis to listen only into
# the IPv4 lookback interface address (this means Redis will be able to
# accept connections only from clients running into the same computer it
# is running).
#
# IF YOU ARE SURE YOU WANT YOUR INSTANCE TO LISTEN TO ALL THE INTERFACES
# JUST COMMENT THE FOLLOWING LINE.
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# bind 127.0.0.1
验证， *:6379 表示任意 IP:6379 均可访问
[root@mch ~]# ps -ef | grep redis
root 2175 1 0 08:15 ? 00:00:05 /usr/local/bin/redis-server *:6379