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[root@test2 ~]# groupadd -g 601 redis
[root@test2 ~]# useradd -u 6001 -g 601 redis
[root@test2 ~]# id redis
uid=6001(redis) gid=601(redis) groups=601(redis)
[root@test2 ~]# passwd redis
Changing password for user redis.
New password: 
BAD PASSWORD: it is too short
BAD PASSWORD: is too simple
Retype new password: 
passwd: all authentication tokens updated successfully.

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echo "redis hard nofile 10240" >> /etc/security/limits.conf
echo "redis soft nofile 10240" >> /etc/security/limits.conf
echo "redis hard nproc 8192" >> /etc/security/limits.conf
echo "redis soft nproc 8192" >> /etc/security/limits.conf

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mkdir -p /data/redis
chown -R redis:redis /data/redis

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mkdir -p /data/redis/log
mkdir -p /data/redis/conf
mkdir -p /data/redis/data
chown -R redis:redis /data/redis

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su - redis
cd /soft
tar zxvf redis-5.0.8.tar.gz
cd redis-5.0.8
make
cd src
make PREFIX=/data/redis install
cp ../redis.conf /data/redis/redis.conf

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vi ~/.bash_profile
PATH=/data/redis/bin:$PATH

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a.调整vm.overcommit_memory
    echo "vm.overcommit_memory = 1" >> /etc/sysctl.conf
    可选值：0、1、2
        0：表示内核将检查是否有足够的可用内存供应用进程使用，如果有足够的可用内存，内存申请        
            允许，否则，内存申请失败，并把错误返回给应用进程。
        1：表示内核允许分配所有的物理内存，而不管当前的内存状态如何。
        2：表示内核允许分配超过所有物理内存和交换空间综合的内存。


b.调整Transparent Huge Pages（THP）
    解决：redis 做 rdb时会有部分请求超时的case
    echo "never > /sys/kernel/mm/transparent_hugepage/enabled" >> /etc/rc.local

c.TCP backlog设置
    echo "net.core.somaxconn = 2048 " >> /etc/sysctl.conf
    sysctl -p
    此参数确定了TCP 连接中已完成队列（完成3次握手之后）的长度，
    当然此值必须不大于Linux系统定义的/proc/sys/net/core/somaxconn值，默认是511，
    而Linux的默认参数值是128.当系统并发量大并且客户端速度缓慢的时候，可以将这2个参数一起参考    
    设定。

d.调整redis.conf
    vi /data/redis/redis.conf添加以下
    daemonize yes
    logfile "/data/redis/log/redis.log"
    requirepass redis

    并修改 bind参数的127.0.0.1 ，改为本机IP
    其中还有内存，最大连接数等参数，根据情况自己设置

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[redis@test2 ~]$ redis-server /data/redis/redis.conf 
[redis@test2 ~]$ ps -ef|grep redis
root      32070  27704  0 01:58 pts/0    00:00:00 su - redis
redis     32071  32070  0 01:58 pts/0    00:00:00 -bash
redis     32091      1  0 01:58 ?        00:00:00 redis-server 192.168.65.2:6379     
redis     32099  32071  0 01:59 pts/0    00:00:00 ps -ef
redis     32100  32071  0 01:59 pts/0    00:00:00 grep redis
[redis@test2 ~]$ netstat -an|grep 6379
tcp        0      0 192.168.65.2:6379           0.0.0.0:*                   LISTEN  

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[redis@test2 ~]$ redis-cli -h 192.168.65.2
192.168.65.2:6379> ping
(error) NOAUTH Authentication required.
#这里要进行密码验证是因为我们在配置文件中修改requirepass参数，如果不设置，则默认为空，客户端连进来就直接可以操作，如果设置了就需要验证密码后才能操作
192.168.65.2:6379> auth redis      
OK
192.168.65.2:6379> ping
PONG
192.168.65.2:6379> 

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[redis@test2 ~]$ redis-cli -h 192.168.65.2 -a redis
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
192.168.65.2:6379> ping
PONG
192.168.65.2:6379> shutdown
not connected> 

PS：-a 后面跟的是密码，进去后就无需验证密码

也可以使用 pkill redis-server

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vim /etc/rc.local
添加以下内容：
su - redis -c "/data/redis/bin/redis-server /data/redis/redis.conf"

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a.关闭 redis 服务
    > vi /data/redis/redis.conf 
    > 修改 requirepass redis123
    > 重启 redis

b.不关闭 redis 服务
    > vi /data/redis/redis.conf 
    > 修改 requirepass redis123
    > redis-cli -h 192.168.65.2
    192.168.65.2:6379> ping
    (error) NOAUTH Authentication required.
    192.168.65.2:6379> auth redis13
    (error) ERR invalid password
    192.168.65.2:6379> auth redis123
    OK
    192.168.65.2:6379> config get requirepass
    1) "requirepass"
    2) "redis123"
    192.168.65.2:6379> config set requirepass redis
    OK
    192.168.65.2:6379> config get requirepass
    1) "requirepass"
    2) "redis"
    192.168.65.2:6379> exit
    [redis@test2 ~]$ redis-cli -h 192.168.65.2
    192.168.65.2:6379> auth redis
    OK
    192.168.65.2:6379> ping
    PONG

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vi /data/redis/redis.conf
添加以下内容：
masterauth redis

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cd /soft/redis-5.0.8/utils
[root@test2 utils]# ./install_server.sh 
Welcome to the redis service installer
This script will help you easily set up a running redis server

Please select the redis port for this instance: [6379] 6479      # 写新的端口号
Please select the redis config file name [/etc/redis/6479.conf] /data/redis/6479/redis_6479.conf              #填配置文件存放路径
Please select the redis log file name [/var/log/redis_6479.log] /data/redis/6479/log/redis_6479.conf          #填日志文件存放路径
Please select the data directory for this instance [/var/lib/redis/6479] /data/redis/6479/data/                        #填数据文件存放的路径
Please select the redis executable path [] /data/redis/bin/redis-server
Selected config:
Port           : 6479
Config file    : /data/redis/6479/redis_6479.conf
Log file       : /data/redis/6479/log/redis_6479.conf
Data dir       : /data/redis/6479/data/
Executable     : /data/redis/bin/redis-server
Cli Executable : /data/redis/bin/redis-cli
Is this ok? Then press ENTER to go on or Ctrl-C to abort.   #按回车
Copied /tmp/6479.conf => /etc/init.d/redis_6479
Installing service...
Successfully added to chkconfig!
Successfully added to runlevels 345!
Starting Redis server...
Installation successful!   #安装成功

查看状态
[root@test2 utils]# ps -ef|grep redis
redis      2127      1  0 03:22 ?        00:00:01 redis-server 192.168.65.2:6379     
root       2192      1  0 03:34 ?        00:00:00 /data/redis/bin/redis-server 127.0.0.1:6479                  
root       2197   2044  0 03:34 pts/0    00:00:00 grep redis
[root@test2 utils]# netstat -an|grep 6479
tcp        0      0 127.0.0.1:6479              0.0.0.0:*                   LISTEN      
[root@test2 utils]#