2. 服务器技术
  3. CENTOS7下安装REDIS

CENTOS7下安装REDIS


1、安装redis

第一步：下载redis安装包

wget https://download.redis.io/releases/redis-4.0.6.tar.gz

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[root@iZwz991stxdwj560bfmadtZ local]# wget https://download.redis.io/releases/redis-4.0.6.tar.gz
--2017-12-13 12:35:12--  https://download.redis.io/releases/redis-4.0.6.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: 1723533 (1.6M) [application/x-gzip]
Saving to: ‘redis-4.0.6.tar.gz’
 
100%[==========================================================================================================>] 1,723,533    608KB/s   in 2.8s  
 
2017-12-13 12:35:15 (608 KB/s) - ‘redis-4.0.6.tar.gz’ saved [1723533/1723533]

 

第二步：解压压缩包

tar -zxvf redis-4.0.6.tar.gz

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[root@iZwz991stxdwj560bfmadtZ local]# tar -zxvf redis-4.0.6.tar.gz

　

第三步：yum安装gcc依赖

yum install gcc

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[root@iZwz991stxdwj560bfmadtZ local]# yum install gcc　　
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遇到选择,输入y即可<br><br><br>

第四步：跳转到redis解压目录下

cd redis-4.0.6

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[root@iZwz991stxdwj560bfmadtZ local]# cd redis-4.0.6

 

第五步：编译安装

make MALLOC=libc　　

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[root@iZwz991stxdwj560bfmadtZ redis-4.0.6]# make MALLOC=libc

　　

将/usr/local/redis-4.0.6/src目录下的文件加到/usr/local/bin目录

cd src && make install

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[root@iZwz991stxdwj560bfmadtZ redis-4.0.6]# 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

　　

第六步：测试是否安装成功 

先切换到redis src目录下

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[root@iZwz991stxdwj560bfmadtZ redis-4.0.6]# cd src

 

1、直接启动redis

./redis-server

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[root@iZwz991stxdwj560bfmadtZ src]# ./redis-server
18685:C 13 Dec 12:56:12.507 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
18685:C 13 Dec 12:56:12.507 # Redis version=4.0.6, bits=64, commit=00000000, modified=0, pid=18685, just started
18685:C 13 Dec 12:56:12.507 # Warning: no config file specified, using the default config. In order to specify a config file use ./redis-server /path/to/redis.conf
                _._                                                 
           _.-``__ ''-._                                            
      _.-``    `.  `_.  ''-._           Redis 4.0.6 (00000000/0) 64 bit
  .-`` .-```.  ```\/    _.,_ ''-._                                  
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 18685
  `-._    `-._  `-./  _.-'    _.-'                                  
 |`-._`-._    `-.__.-'    _.-'_.-'|                                 
 |    `-._`-._        _.-'_.-'    |           https://redis.io       
  `-._    `-._`-.__.-'_.-'    _.-'                                  
 |`-._`-._    `-.__.-'    _.-'_.-'|                                 
 |    `-._`-._        _.-'_.-'    |                                 
  `-._    `-._`-.__.-'_.-'    _.-'                                  
      `-._    `-.__.-'    _.-'                                      
          `-._        _.-'                                          
              `-.__.-'                                              
 
18685:M 13 Dec 12:56:12.508 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
18685:M 13 Dec 12:56:12.508 # Server initialized
18685:M 13 Dec 12:56:12.508 # 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.
18685:M 13 Dec 12:56:12.508 # 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.
18685:M 13 Dec 12:56:12.508 * Ready to accept connections　　

 

如上图：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、以后台进程方式启动redis

第一步：修改redis.conf文件

将

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daemonize no　　

修改为

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daemonize yes

　　

第二步：指定redis.conf文件启动

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./redis-server /usr/local/redis-4.0.6/redis.conf
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[root@iZwz991stxdwj560bfmadtZ src]# ./redis-server /usr/local/redis-4.0.6/redis.conf
18713:C 13 Dec 13:07:41.109 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
18713:C 13 Dec 13:07:41.109 # Redis version=4.0.6, bits=64, commit=00000000, modified=0, pid=18713, just started
18713:C 13 Dec 13:07:41.109 # Configuration loaded

 

第三步：关闭redis进程

首先使用ps -aux | grep redis查看redis进程

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[root@iZwz991stxdwj560bfmadtZ src]# ps -aux | grep redis
root     18714  0.0  0.1 141752  2008 ?        Ssl  13:07   0:00 ./redis-server 127.0.0.1:6379
root     18719  0.0  0.0 112644   968 pts/0    R+   13:09   0:00 grep --color=auto redis

 

使用kill命令杀死进程

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[root@iZwz991stxdwj560bfmadtZ src]# kill -9 18714

　　

　　　

 

第七步：设置redis开机自启动

1、在/etc目录下新建redis目录

mkdir redis

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[root@iZwz991stxdwj560bfmadtZ etc]# mkdir redis

 

2、将/usr/local/redis-4.0.6/redis.conf 文件复制一份到/etc/redis目录下，并命名为6379.conf　　

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[root@iZwz991stxdwj560bfmadtZ redis]# cp /usr/local/redis-4.0.6/redis.conf /etc/redis/6379.conf

　　

3、将redis的启动脚本复制一份放到/etc/init.d目录下

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[root@iZwz991stxdwj560bfmadtZ 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

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[root@iZwz991stxdwj560bfmadtZ 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

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# 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

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[root@iZwz991stxdwj560bfmadtZ init.d]# chkconfig redisd on

　　

现在可以直接已服务的形式启动和关闭redis了

启动：

service redisd start　　

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[root@izwz991stxdwj560bfmadtz ~]# service redisd start
Starting Redis server...
2288:C 13 Dec 13:51:38.087 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
2288:C 13 Dec 13:51:38.087 # Redis version=4.0.6, bits=64, commit=00000000, modified=0, pid=2288, just started
2288:C 13 Dec 13:51:38.087 # Configuration loaded

 

关闭：

service redisd stop

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[root@izwz991stxdwj560bfmadtz ~]# service redisd stop
Stopping ...
Redis stopped

　　

　

参考资料：

1、https://blog.csdn.net/zc474235918/article/details/50974483

2、https://blog.csdn.net/gxw19874/article/details/51992125

 

如果出现如下问题：

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[root@iZwz991stxdwj560bfmadtZ ~]# service redisd start
/var/run/redis_6379.pid exists, process is already running or crashed　　

可参考资料：https://blog.csdn.net/luozhonghua2014/article/details/54649295


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