Redis基于内存存储的非关系型数据库，存储速度快，支持主从复制，支持字符串(string)、列表(list)、集合(set)、散列(hash)、有序集合(zset) 五种数据类型,
一、数据库安装
1、使用yum安装
[root@test ~]# yum install redis
[root@test ~]# redis-server --version
Redis server v=3.2.12 sha=00000000:0 malloc=jemalloc-3.6.0 bits=64 build=7897e7d0e13773f
[root@test ~]# redis-cli --version //可以看出使用yum安装的版本都比较旧，下面我们安装最新的5.0.5版本的redis
redis-cli 3.2.12
2、编译安装最新版本redis
[root@test ~]# wget http://download.redis.io/releases/redis-5.0.5.tar.gz
[root@test ~]# tar -zxvf redis-5.0.5.tar.gz
[root@test ~]# yum install gcc -y //gcc -v查看，如果没有需要安装
[root@test redis-5.0.5]# make MALLOC=lib
[root@test redis-5.0.5]# cd src && make all
[root@test src]# make install
[root@test src]# ./redis-server
21522:C 17 Jun 2019 15:36:52.038 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
21522:C 17 Jun 2019 15:36:52.038 # Redis version=5.0.5, bits=64, commit=00000000, modified=0, pid=21522, just started
21522:C 17 Jun 2019 15:36:52.038 # Warning: no config file specified, using the default config. In order to specify a config file use ./redis-server /path/to/redis.conf
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 5.0.5 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in standalone mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 6379
| `-._ `._ / _.-' | PID: 21522
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
出现以上界面说明安装成功
[root@test src]# ./redis-cli --version //查询是安装的最新版本的redis
redis-cli 5.0.5
[root@test src]# ./redis-server --version
Redis server v=5.0.5 sha=00000000:0 malloc=libc bits=64 build=4db47e2324dd3c5
二、配置启动数据库
1、第一种方法就是安装时候的./redis-server,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。
2、以后台进程方式启动redis
[root@test src]# vim /etc/redis-5.0.5/redis.conf //默认安装好的配置文件并不在这个目录下，需要找到复制到该目录下
daemonize no 改为 daemonize yes //以守护进程运行
[root@test src]# ./redis-server /etc/redis-5.0.5/redis.conf
21845:C 17 Jun 2019 15:44:14.129 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
21845:C 17 Jun 2019 15:44:14.129 # Redis version=5.0.5, bits=64, commit=00000000, modified=0, pid=21845, just started
21845:C 17 Jun 2019 15:44:14.129 # Configuration loaded
关闭redis进程
[root@test src]# ps -ef|grep redis
root 21846 1 0 15:44 ? 00:00:00 ./redis-server 127.0.0.1:6379
root 22042 6950 0 15:46 pts/1 00:00:00 grep --color=auto redis
[root@test src]# kill -9 21846
此方法启动关闭较为麻烦，且不能设置开机自启动
三、设置系统进程启动数据库
先编辑配置文件，然后在把配置文件拷贝到/etc/redis下
[root@test ~]# vim /root/redis-5.0.5/redis.conf
#bind 127.0.0.1 //将bind 127.0.0.1注释掉，否则数据库只有本机能够使用
daemonize yes //将no改为yes，使数据库能够以后台守护进程运行
protected-mode no //把保护模式的yes改为no,否则会阻止远程访问
requirepass redis //打开注释，设置密码
[root@test ~]# cp /root/redis-5.0.5/redis.conf /etc/redis/
开机自启动，将redis的启动脚本复制一份放到/etc/init.d目录下
[root@test redis]# vim /etc/init.d/redis
CONF="/etc/redis/redis.conf" //将conf的变量修改下，否则读不到配置文件
[root@test init.d]# cp /root/redis-5.0.5/utils/redis_init_script /etc/init.d/redis
[root@test ~]# cd /etc/init.d
[root@test init.d]# chkconfig redis on
下面就可以用systemctl管理redis
[root@test ~]# systemctl start redis
[root@test ~]# systemctl status redis
● redis.service - LSB: Redis data structure server
Loaded: loaded (/etc/rc.d/init.d/redis; bad; vendor preset: disabled)
Active: active (running) since Mon 2019-06-24 11:10:48 CST; 54s ago
Docs: man:systemd-sysv-generator(8)
Process: 3184 ExecStop=/etc/rc.d/init.d/redis stop (code=exited, status=0/SUCCESS)
Process: 3187 ExecStart=/etc/rc.d/init.d/redis start (code=exited, status=0/SUCCESS)
CGroup: /system.slice/redis.service
└─3189 /usr/local/bin/redis-server *:6379
Jun 24 11:10:48 test systemd[1]: Starting LSB: Redis data structure server...
Jun 24 11:10:48 test redis[3187]: Starting Redis server...
Jun 24 11:10:48 test redis[3187]: 3188:C 24 Jun 2019 11:10:48.203 # oO0OoO0OoO0Oo R...0Oo
Jun 24 11:10:48 test redis[3187]: 3188:C 24 Jun 2019 11:10:48.203 # Redis version=5...ted
Jun 24 11:10:48 test redis[3187]: 3188:C 24 Jun 2019 11:10:48.203 # Configuration loaded
Jun 24 11:10:48 test systemd[1]: Started LSB: Redis data structure server.
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