## CentOS操作系统下的源码编译安装
### 一、安装
1. 创建一个存放源码的目录
~~~
[root@ff4da083e253 ~]# mkdir ~/soft
~~~
2. 切换到上述创建的目录下，在Redis[官网](http://redis.cn)下载源码
~~~
[root@ff4da083e253 ~]# cd soft/
[root@ff4da083e253 soft]# wget http://download.redis.io/releases/redis-6.0.6.tar.gz
~~~
3. 解压下载的源码包
~~~
[root@ff4da083e253 soft]# tar -zxvf redis-6.0.6.tar.gz
~~~
4. 安装gcc并进入解压目录，编译源码(因为源码是C语言写的，需要gcc编译)
~~~
[root@ff4da083e253 soft]# yum install -y gcc
[root@ff4da083e253 soft]# cd redis-6.0.6
[root@ff4da083e253 redis-6.0.6]# make
~~~
5. 编译完成后，安装在指定目录下(如果不知道目录，则会安装在默认目录`/usr/local/bin`)
~~~
[root@ff4da083e253 redis-6.0.6]# make install PREFIX=/opt/wuliang/redis6
~~~
### 二、启动
1. 添加Redis环境变量
~~~
[root@ff4da083e253 redis-6.0.6]# vi /etc/profile
# 打开文件后，在末尾追加如下内容：
export REDIS_HOME=/opt/wuliang/redis6
export PATH=$PATH:$REDIS_HOME/bin
~~~
2. 根据源码提供的脚本，启动Redis
~~~
[root@ff4da083e253 redis-6.0.6]# ./utils/install_server.sh
...
Please select the redis port for this instance: [6379]
Selecting default: 6379
Please select the redis config file name [/etc/redis/6379.conf]
Selected default - /etc/redis/6379.conf
Please select the redis log file name [/var/log/redis_6379.log]
Selected default - /var/log/redis_6379.log
Please select the data directory for this instance [/var/lib/redis/6379]
Selected default - /var/lib/redis/6379
Please select the redis executable path [/opt/wuliang/redis6/bin/redis-server]
Selected config:
Port : 6379
Config file : /etc/redis/6379.conf
Log file : /var/log/redis_6379.log
Data dir : /var/lib/redis/6379
Executable : /opt/wuliang/redis6/bin/redis-server
Cli Executable : /opt/wuliang/redis6/bin/redis-cli
Is this ok? Then press ENTER to go on or Ctrl-C to abort.
Copied /tmp/6379.conf => /etc/init.d/redis_6379
Installing service...
Successfully added to chkconfig!
Successfully added to runlevels 345!
Starting Redis server...
Installation successful!
~~~
> 从上述可以看到，会以端口号区分不同的Redis实例以及对应配置文件、日志文件、数据持久化目录等资源。
3. 查看服务状态
> 上述脚本执行完成后，同时会自动创建一个service服务(/etc/init.d目录下，就可以看到，此处为：redis\_6379)
~~~
[root@ff4da083e253 redis-6.0.6]# service redis_6379 status
Redis is running (13917)
~~~
