Centos 7安装配置Redis

谁践踏了优雅 2022-05-12 09:58 202阅读 0赞

作为软件开发人员在开发系统的时候为了提高系统的响应效率采用缓存技术是必须的，现在redis是使用较多的缓存技术，这里介绍一下如何在centos7环境下配置redis服务。

## Redis 安装部署 ##

操作系统环境不用说了（需要配置好gcc环境）  
1.下载redis安装文件

> wget [http://download.redis.io/releases/redis-4.0.11.tar.gz][http_download.redis.io_releases_redis-4.0.11.tar.gz]  
> 我是下载到/opt/redis目录

2.解压缩

> tar -zxvf redis-4.0.11.tar.gz

3.编译安装  
在安装前切记执行这句，不然会报错  
make MALLOC=libc  
随后进入src目录执行，剩下的就等着就是了

> make instal

安装结束了启动一下redis服务

> \[root@nic-redis redis-4.0.11\]\# ./src/redis-server

你会看到以下结果

15018:C 16 Sep 20:49:05.729 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
    15018:C 16 Sep 20:49:05.730 # Redis version=4.0.11, bits=64, commit=00000000, modified=0, pid=15018, just started 15018:C 16 Sep 20:49:05.730 # Warning: no config file specified, using the default config. In order to specify a config file use ./src/redis-server /path/to/redis.conf 15018:M 16 Sep 20:49:05.731 * Increased maximum number of open files to 10032 (it was originally set to 1024). _._ _.-``__ ''-._ _.-`` `. `_. ''-._ Redis 4.0.11 (00000000/0) 64 bit .-`` .-```. ```\/ _.,_ ''-._ ( ' , .-` | `, ) Running in standalone mode |`-._`-...-` __...-.``-._|'` _.-'| Port: 6379 | `-._ `._ / _.-' | PID: 15018 `-._ `-._ `-./ _.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | http://redis.io `-._ `-._`-.__.-'_.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | `-._ `-._`-.__.-'_.-' _.-' `-._ `-.__.-' _.-' `-._ _.-' `-.__.-' 15018:M 16 Sep 20:49:05.733 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. 15018:M 16 Sep 20:49:05.733 # Server initialized 15018:M 16 Sep 20:49:05.733 # 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. 15018:M 16 Sep 20:49:05.733 # 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. 15018:M 16 Sep 20:49:05.733 * DB loaded from disk: 0.000 seconds 15018:M 16 Sep 20:49:05.733 * Ready to accept connections

说明redis已经成功完成安装

## Redis配置 ##

安装完后不可能每次要使用的时候都手动启动redis，因此我们需要做一些配置让redis能够作为后台服务在开机的时候自动启动。  
1.修改redis的配置文件

> \[root@nic-redis redis-4.0.11\]\# vi redis.conf

找到

> daemonize no

并将其修改为

> daemonize yes

2.将src目录下面的文件同步复制到/usr/local/bin目录下

> \[root@nic-redis init.d\]\# cp /opt/redis/redis-4.0.11/src/\* -r /usr/local/bin/

3.在/etc下建立redis目录

> \[root@nic-redis redis-4.0.11\]\# mkdir /etc/redis

4.复制redis.conf文件到/etc/redis目录下并重命名为6397.conf

> \[root@nic-redis redis-4.0.11\]\# cp /opt/redis/redis-4.0.11/redis.conf /etc/redis/6379.conf

5.复制redis启动脚本到/etc/init.d下并重命名为redisd

> \[root@nic-redis redis-4.0.11\]\# cp utils/redis\_init\_script /etc/init.d/redisd

6.设置redis开机自启

> \[root@nic-redis init.d\]\# chkconfig redisd on

7.启动测试

[root@nic-redis init.d]# service redisd start
    Starting Redis server...
    16065:C 16 Sep 21:12:01.590 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
    16065:C 16 Sep 21:12:01.590 # Redis version=4.0.11, bits=64, commit=00000000, modified=0, pid=16065, just started
    16065:C 16 Sep 21:12:01.590 # Configuration loaded

这时候说明redis已经作为后台服务启动了  
这时候看下进程

[root@nic-redis init.d]# ps -aux | grep redis
    avahi       707  0.0  0.0  62240  2180 ?        Ss   9月07   0:05 avahi-daemon: running [nic-redis.local]
    root      16066  0.0  0.0  38240  1952 ?        Ssl  21:12   0:00 /usr/local/bin/redis-server 127.0.0.1:6379
    root      16259  0.0  0.0 112720   936 pts/0    S+   21:18   0:00 grep --color=auto redis

重启一下再测试

[root@nic-redis ~]# ps -aux | grep redis
    avahi       693  0.0  0.0  62236  2180 ?        Ss   21:19   0:00 avahi-daemon: running [nic-redis.local]
    root       1129  0.0  0.0 141828  1992 ?        Ssl  21:19   0:00 /usr/local/bin/redis-server 127.0.0.1:6379
    root       2005  0.0  0.0 112720   932 pts/0    S+   21:21   0:00 grep --color=auto redis

可以看到redis已经能够开机作为后台服务自动启动了，这样我们就完成了redis的安装配置工作！

[http_download.redis.io_releases_redis-4.0.11.tar.gz]: http://download.redis.io/releases/redis-4.0.11.tar.gz