centos安装redis

前言

安装redis

[redis下载地址(https://redis.io/download)
安装命令：

# 安装gcc环境 如果没有安装gcc会出现错误(此时需要删除文件夹重新解压)
yum install gcc-c++
# 将redis-5.0.5.tar.gz下载到/home
cd /home
 wget http://download.redis.io/releases/redis-5.0.5.tar.gz
 tar xzf redis-5.0.5.tar.gz
 cd redis-5.0.5
 # 编译
 make
 # 安装到/usr/local/redis目录下
 make PREFIX=/usr/local/redis install
 # 拷贝配置文件
 cp redis.conf /usr/local/redis/

redis官网教程

启动方式

• 前端模式

 /usr/local/redis/bin/redis-server 

测试结果：

• 后端模式

# 设置daemonize为yes
vim /usr/local/redis/redis.conf
# redis-server根据redis.conf文件启动redis
cd /usr/local/redis/
./bin/redis-server ./redis.conf
# 启动后查看redis默认端口号为6379
ps -ef | grep -i redis
# 关闭redis
./bin/redis-cli shutdown

执行vim /usr/local/redis/redis.conf后，在redis.conf中daemonize设置为yes

执行ps -ef | grep -i redis

redis使用

通过redis客户端远端连接redis

# 打开6379端口
/sbin/iptables -I INPUT -p tcp --dport 6379 -j ACCEPT
/etc/rc.d/init.d/iptables save
# 连接客户端
./bin/redis-cli -h 192.168.182.137 -p 6379
# 测试连接
192.168.182.137:6379> ping

执行./bin/redis-cli -h 192.168.182.137 -p 6379命令出现如下错误：Could not connect to Redis at 192.168.182.137:6379: Connection refused

解决方法：vim redis.conf，找到bind选项注释之。

执行ping命令，出现如下提示信息：

(error) DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified, no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface. If you want to connect from external computers to Redis you may adopt one of the following solutions:
1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent.
2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server. 
3) If you started the server manually just for testing, restart it with the '--protected-mode no' option. 
4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside.

错误的原因是redis出于保护模式，远端连接失败。此时有四种解决方法，博主采用方案2解决vi redis.conf，找到protected-mode选项设置为no，然后重启redis即可。

最后远程连接之后使用ping命令得出如下结果：

redis图形化界面

在linux下redis的操作需要使用redis客户端命令，但是其显示还是较为麻烦。通过在window下安装redis图形化界面，可以查看对应主机的redis的内容。博主安装的是redis-desktop-manager。安装完成后，根据主机名和地址连接对应的redis即可。

通过点击2处的Connect to Redis Server打开连接界面，输出对应的redis所在的主机的ip地址和用户名即可登陆。登陆结果可知，默认redis创建16个数据库。

链接地址

redis官方教程