redis 远程连接方法
解决方法
1、修改redis服务器的配置文件
vi redis.conf
注释以下绑定的主机地址
# bind 127.0.0.1
或
vim redis.conf
bind 0.0.0.0
protected-mode no
2、修改redis服务器的参数配置
修改redis的守护进程为no，不启用
127.0.0.1:6379> config set daemonize "no"
OK
修改redis的保护模式为no，不启用
127.0.0.1:6379> config set protected-mode"no"
OK
或者
config set requirepass 123 ->123是密码
注意：开启 6379端口
3、远程连接
$ redis-cli -h 138.138.138.138 -p 6379
redis>ping
PONG
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如何让Redis允许远程连接，并设置密码
最近网站数据量过大，需要在数据库上层增加一个缓存层，所以采用了Redis作为数据库。但是Redis默认是不允许远程连接的，主要还是考虑到了安全问题。
但是如果需要远程连接，那该如何操作呢：
在/etc/redis/redis.conf文件里面修改如下配置文件，
################################## NETWORK #####################################
# 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 ::1
将bind 127.0.0.1 ::1注释掉：
# bind 127.0.0.1 ::1
这样就可以远程连接了。
允许远程连接就带来了一个很大的问题，可以用过互联网破解Redis密码，所以需要设置Redis的密码。
redis的查询速度是非常快的，外部用户一秒内可以尝试多大150K个密码；所以密码要尽量长（对于DBA 没有必要必须记住密码）；
所以需要设置一个很长的密码，防止破解。
找到刚才的配置文件，有如下内容：
################################## SECURITY ###################################
# Require clients to issue AUTH before processing any other # commands. This might be useful in environments in which you do not trust # others with access to the host running redis-server. # # This should stay commented out for backward compatibility and because most # people do not need auth (e.g. they run their own servers). # # Warning: since Redis is pretty fast an outside user can try up to # 150k passwords per second against a good box. This means that you should # use a very strong password otherwise it will be very easy to break. # requirepass xxxxxxxxxxxx
修改requirepass 后面就是密码，密码设置的尽量长。
之后重启Redis，在真正的项目上，需要注意数据的持久化，否则重启数据会丢失。
如果是用apt-get或者yum install安装的redis，可以直接通过下面的命令停止/启动/重启redis
/etc/init.d/redis-server stop
/etc/init.d/redis-server start
/etc/init.d/redis-server restart
如果是通过源码安装的redis，则可以通过redis的客户端程序redis-cli的shutdown命令来重启redis
1、Redis关闭：
redis-cli -h 127.0.0.1 -p 6379 shutdown
2、Redis启动：
redis-server
