一、安装redis
第一步：下载redis安装包
cd /etc && mkdir redis && cd redis wget http://download.redis.io/releases/redis-5.0.3.tar.gz
第二步：解压压缩包
tar -zxvf redis-5.0.3.tar.gz
第三步：yum安装gcc依赖
yum -y install gcc
第四步：跳转到redis解压目录下
cd redis-5.0.3
第五步：编译安装
make MALLOC=libc
第六步：将/usr/local/redis5.0/redis-5.0.3/src目录下的文件加到/usr/local/bin目录
cd src && make install
二、启动redis的三种方式
redis安装完成后默认是本机访问
修改redis.conf配置
mkdir -p /var/log/redis/data vim /etc/redis/redis-5.0.3/redis.conf 找到 bind 127.0.0.1 改成 bind 0.0.0.0 或者注释掉 修改 protected-mode 属性值为no # 关闭保护模式 修改 daemonize 属性值为yes # 后台启动 requirepass root(root为密码) # 设置密码 pidfile /var/log/redis/redis_6379.pid # pid文件 logfile "/var/log/redis/redis_6379.log" # 启动日志 dbfilename dump.rdb # 数据文件 dir /var/log/redis/data # 数据目录 注：redis默认是只能本地访问，注释掉并叫保护模式禁用以后可以IP访问
先切换到redis src目录下
cd /etc/redis/redis-5.0.3/src
1、直接启动redis
./redis-server
[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
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://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：指定redis.conf文件启动
redis-server /etc/redis/redis-5.0.3/redis.conf
第二步：关闭redis进程
首先使用ps -aux | grep redis查看redis进程
# 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
# kill -9 18714
3、设置redis开机自启动
1、将/etc/redis/redis-5.0.3/redis.conf文件复制一份到/etc/redis目录下，并命名为6379.conf
cp /etc/redis/redis-5.0.3/redis.conf /etc/redis/6379.conf
2、将redis的启动脚本复制一份放到/etc/init.d目录下
cp /etc/redis/redis-5.0.3/utils/redis_init_script /etc/init.d/redisd
3、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
# chkconfig redisd on 结果: service redisd does not support chkconfig
4、启动redis
service redisd start service redisd stop service redisd restart
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
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
# service redisd start
结果: 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
如果电脑没有关机会报这个错误
[root@iZwz991stxdwj560bfmadtZ ~]# service redisd start /var/run/redis_6379.pid exists, process is already running or crashed
解决方案:
- 可用安装文件启动 redis-server /etc/redis/6379.conf
- shutdown -r now 软重启让系统自动恢复下就行了
关闭：
service redisd stop
[root@izwz991stxdwj560bfmadtz ~]# service redisd stop Stopping ... Redis stopped
密码验证
auth root(密码) DATABASE_URL=mysql://root:root@127.0.0.1:3306/zanhu REDIS_URL=redis://:root@127.0.0.1:6379
三、参考资料
1、http://blog.csdn.net/zc474235918/article/details/50974483
2、http://blog.csdn.net/gxw19874/article/details/51992125
可参考资料：http://blog.csdn.net/luozhonghua2014/article/details/54649295
