ubuntu, debian 安装redis，设置开机自动启动和密码，允许外网访问

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本文介绍了在Ubuntu和Debian上如何安装Redis，包括设置开机自动启动、设置密码以及允许外网访问。此外，还展示了如何通过Python3连接Redis并成功验证连接。

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ubuntu, debian 安装redis，设置开机自动启动和密码，允许外网访问
通过Python3连接redis

ubuntu, debian 安装redis，设置开机自动启动和密码，允许外网访问

apt的包里自带redis，如果对redis的版本不是要求特别高的，可以直接使用apt进行安装：

apt install redis-server

启动redis:

redis-server

启动命令行接口：

redis-cli

注意：使用apt安装后,redis的默认配置文件的位置是：/etc/redis/redis.conf
复制配置文件后进行修改：

nano /etc/redis/redis.conf

注释掉bind ip这行,把保护模式关闭，外网就可以访问了(要设置密码)：

#bind 127.0.0.1 ::1
protected-mode no #把yes改为no

apt安装的redis是默认后台启动的：

# By default Redis does not run as a daemon. Use 'yes' if you need it.
# Note that Redis will write a pid file in /var/run/redis.pid when daemonized.
daemonize yes

设置密码：

# Require clients to issue AUTH <PASSWORD> 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 test

用新的配置文件重启redis:

service redis-server restart

修改配置：

sudo echo 'vm.overcommit_memory = 1' >> /etc/sysctl.conf
sudo sysctl -p
sudo echo 2048 > /proc/sys/net/core/somaxconn
sudo echo never > /sys/kernel/mm/transparent_hugepage/enabled
chmod 644 /etc/redis/redis.conf
service redis-server start

通过Python3连接redis

先安装redis库：

pip3 install redis

然后进行连接：

import redis
r=redis.Redis(host='127.0.0.1',port=6379,password='test')
r.set('test','connect success')
print(r.get('test'))

如果输出connect success，说明连接成功了。

需要注意的是redis.Redis的参数有以下这些：

__init__(self, host='localhost', port=6379, db=0, password=None, socket_timeout=None, socket_connect_timeout=None, socket_keepalive=None, socket_ke
epalive_options=None, connection_pool=None, unix_socket_path=None, encoding='utf-8', encoding_errors='strict', charset=None, errors=None, decode_respon
ses=False, retry_on_timeout=False, ssl=False, ssl_keyfile=None, ssl_certfile=None, ssl_cert_reqs='required', ssl_ca_certs=None, max_connections=None)

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