无法连接AWS EC2端口6379上的redis服务器

Question

我在EC2上有两个服务器。一个托管我的php应用程序，另一个托管我的redis服务器。我在redis服务器上管理我的php会话和数据。因此，在我的php服务器上，我将ip:port作为会话保存路径，并在stderr中收到了错误FastCGI：“php消息：php致命错误：未捕获异常‘redisception’，消息‘Connection closed’”

我需要在我的redis实例上为入站流量打开端口6379。我通过在AWS安全组中设置自定义TCP设置来打开它，但该端口仍然对外界关闭。但是我能够监听redis服务器本身上的端口。我在这个过程中错过了什么吗？我是否需要在某个地方进行任何其他更改。请指导我。我对AWS管理非常陌生在实例1上：我正在使用php、Apache和phpredis在实例2上：使用Redis

但我在实例2上安装了Memcached，该实例通过端口11211连接，没有任何问题。我对Redis使用了相同的安全规则

Answer 1

默认情况下，redis只在127.0.0.1上侦听，您需要明确告诉redis侦听其他接口或任何节点。根据您的发行版，这可能是类似于redis的地方。形态。

最重要的是，如果你想让redis监听所有地址（0.0.0.0），你应该在redis.conf.

当你配置redis时，为了上帝的爱，请确保在你的安全组设置中，你定义该端口仅对需要连接到redis的PHP服务器的IP或安全组开放，而不是对整个世界开放。

作为参考，这里是redis的配置部分。关于绑定：

# By default, if no "bind" configuration directive is specified, Redis listens
# for connections from all the network interfaces available on the server.
# It is possible to listen to just one or multiple selected interfaces using
# the "bind" configuration directive, followed by one or more IP addresses.
#
# Examples:
# 
# bind 192.168.1.100 10.0.0.1
# bind 127.0.0.1 ::1
#
# ~~~ 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

# Protected mode is a layer of security protection, in order to avoid that
# Redis instances left open on the internet are accessed and exploited.
#
# When protected mode is on and if:
#
# 1) The server is not binding explicitly to a set of addresses using the
#    "bind" directive.
# 2) No password is configured.
#
# The server only accepts connections from clients connecting from the
# IPv4 and IPv6 loopback addresses 127.0.0.1 and ::1, and from Unix domain
# sockets.
#
# By default protected mode is enabled. You should disable it only if
# you are sure you want clients from other hosts to connect to Redis
# even if no authentication is configured, nor a specific set of interfaces
# are explicitly listed using the "bind" directive.
protected-mode yes