Redis之Redis

Redis 环境安装

安装

如果已经安装了老版本3.0.6

1. 卸载软件
sudo apt-get remove redis-server
2. 清除配置
sudo apt-get remove --purge redis-server
3. 删除残留文件
sudo find / -name redis
一般设置如下
sudo rm -rf var/lib/redis/
sudo rm -rf /var/log/redis
sudo rm -rf /etc/redis/
sudo rm -rf /usr/bin/redis-*

下载地址：http://redis.io/download ，下载最新文档版本，稳定版系列.

1. 下载安装文件

   wget http://download.redis.io/releases/redis-3.2.3.tar.gz
   

2. 解压

   tar -zxvf redis-3.2.3.tar.gz
   

3. copy文件并ls查看

   sudo mkdir -p /usr/local/redis/
   sudo cp -r redis-3.2.3/* /usr/local/redis/
   ls /usr/local/redis/
   

4. 进入安装目录

   cd /usr/local/redis/
   

5. 编译

   首先打开README.md，翻阅基本build和install方式。

   sudo make
   

   尝试环境是否可以正常使用(Hint: It's a good idea to run 'make test' ;)

   sudo make test
   

   如果出现

   o/ All tests passed without errors!

6. 表示redis环境没有问题。

7. 安装 最后安装路径

   sudo make install
   

8. 查看编译好的命令文件

   ls /usr/local/bin/redis-*
   --/usr/local/bin/redis-benchmark     性能测试工具,例如：redis-benchmark -n 1000000 -c 50 , 50个客户端，并发1000000个SETs/GETs查询
   --/usr/local/bin/redis-check-aof     更新日志检查
   --/usr/local/bin/redis-check-dump    本地数据文件检查
   --/usr/local/bin/redis-cli           命令行操作工具
   --/usr/local/bin/redis-server        服务器程序
   

9. 修改配置文件

   sudo mkdir /etc/redis
   sudo cp redis.conf /etc/redis/
   ls /etc/redis/redis.conf
   

   启动redis

$redis-server /etc/redis/redis.conf

出现以下代表启动成功

python@ubuntu:~$ redis-sever /etc/redis/redis.conf 
未找到 'redis-sever' 命令，您要输入的是否是：
 命令 'redis-server' 来自于包 'redis-server' (universe)
redis-sever：未找到命令
python@ubuntu:~$ redis-server /etc/redis/redis.conf 
23003:M 17 Sep 10:52:57.535 * Increased maximum number of open files to 10032 (it was originally set to 1024).
                _._                                                  
           _.-``__ ''-._                                             
      _.-``    `.  `_.  ''-._           Redis 3.2.3 (00000000/0) 64 bit
  .-`` .-```.  ```/    _.,_ ''-._                                   
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 23003
  `-._    `-._  `-./  _.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |           http://redis.io        
  `-._    `-._`-.__.-'_.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |                                  
  `-._    `-._`-.__.-'_.-'    _.-'                                   
      `-._    `-.__.-'    _.-'                                       
          `-._        _.-'                                           
              `-.__.-'                                               

23003:M 17 Sep 10:52:57.536 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
23003:M 17 Sep 10:52:57.537 # Server started, Redis version 3.2.3
23003:M 17 Sep 10:52:57.537 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
23003:M 17 Sep 10:52:57.537 # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.
23003:M 17 Sep 10:52:57.537 * The server is now ready to accept connections on port 6379

连接redis服务器

新开一个窗口，或者redis-server后台启动。

通过

$ redis-cli

得到

127.0.0.1:6379>

127.0.0.1:6379> ping
PONG

代表redis服务器已经正常安装并且可以使用了。