Aliyun服务器配置Redis

安装Redis

1. 第一步下载Redis安装包

[root@featherwit local]# wget http://download.redis.io/releases/redis-4.0.9.tar.gz
--2020-06-20 15:09:44--  http://download.redis.io/releases/redis-4.0.9.tar.gz
Resolving download.redis.io (download.redis.io)... 109.74.203.151
Connecting to download.redis.io (download.redis.io)|109.74.203.151|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1737022 (1.7M) [application/x-gzip]
Saving to: ‘redis-4.0.9.tar.gz’

100%[====================================================================================================>] 1,737,022   7.09KB/s   in 3m 38s 

2020-06-20 15:13:23 (7.77 KB/s) - ‘redis-4.0.9.tar.gz’ saved [1737022/1737022]

2. 解压安装

[root@featherwit local]# tar xzf redis-4.0.9.tar.gz

3. yum安装gcc依赖

[root@featherwit ~]# yum install gcc

4. 跳转到redis解压目录下

[root@featherwit local]# cd redis-4.0.9

5. 编译安装

[root@featherwit redis-4.0.9]# make MALLOC=libc

将/usr/local/redis/src目录下的文件加到/usr/local/bin目录

[root@featherwit redis-4.0.9]# cd src && make install
    CC Makefile.dep

Hint: It's a good idea to run 'make test' ;)

    INSTALL install
    INSTALL install
    INSTALL install
    INSTALL install
    INSTALL install

启动Redis的三种方式

1. 直接启动Redis

[root@featherwit src]# redis-server
16975:C 20 Jun 15:15:06.759 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
16975:C 20 Jun 15:15:06.759 # Redis version=4.0.9, bits=64, commit=00000000, modified=0, pid=16975, just started
16975:C 20 Jun 15:15:06.759 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf
                _._                                                  
           _.-``__ ''-._                                             
      _.-``    `.  `_.  ''-._           Redis 4.0.9 (00000000/0) 64 bit
  .-`` .-```.  ```/    _.,_ ''-._                                   
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 16975
  `-._    `-._  `-./  _.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |           http://redis.io        
  `-._    `-._`-.__.-'_.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |                                  
  `-._    `-._`-.__.-'_.-'    _.-'                                   
      `-._    `-.__.-'    _.-'                                       
          `-._        _.-'                                           
              `-.__.-'                                               

16975:M 20 Jun 15:15:06.760 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
16975:M 20 Jun 15:15:06.760 # Server initialized
16975:M 20 Jun 15:15:06.760 # 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.
16975:M 20 Jun 15:15:06.760 # 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.
16975:M 20 Jun 15:15:06.760 * Ready to accept connections

如上述Redis启动成功，但是这种启动方式需要一直打开窗口，不能进行其他操作，不太方便。

按 ctrl + c可以关闭窗口。

2. 以后台方式启动Redis

• 修改redis.conf文件

将
daemonize no
修改为
daemonize yes

• 指定redis.conf文件启动

[root@featherwit redis]# redis-server /usr/local/redis/redis.conf 
16993:C 20 Jun 15:18:45.208 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
16993:C 20 Jun 15:18:45.208 # Redis version=4.0.9, bits=64, commit=00000000, modified=0, pid=16993, just started
16993:C 20 Jun 15:18:45.208 # Configuration loaded

3. 设置Redis开机自启

• 在/etc目录下新建redis目录

[root@featherwit ~]# cd /etc/
[root@featherwit etc]# make redis 

• 将/usr/local/redis/redis.conf 文件复制一份到/etc/redis目录下，并命名为6379.conf

[root@featherwit redis]# cp /usr/local/redis/redis.conf /etc/redis/6379.conf

• 将redis的启动脚本复制一份放到/etc/init.d目录下

[root@featherwit init.d]# cp /usr/local/redis-4.0.6/utils/redis_init_script /etc/init.d/redisd

4. 设置redis开机自启动

先切换到/etc/init.d目录下，然后执行自启命令

[root@featherwit init.d]# chkconfig redisd on
service redisd does not support chkconfig

看结果是redisd不支持chkconfig

解决方法：使用vim编辑redisd文件，在第一行加入如下两行注释，保存退出

# chkconfig:   2345 90 10
# description:  Redis is a persistent key-value database

注释的意思是，redis服务必须在运行级2，3，4，5下被启动或关闭，启动的优先级是90，关闭的优先级是10。

再次执行开机自启命令，成功

现在可以直接已服务的形式启动和关闭redis了

启动：

service redisd start

关闭：

方法1：service redisd stop
方法2：redis-cli SHUTDOWN

安全组规则设置