redis安装以及安装遇到的错误

1.下载安装

下载安装包

wget http://download.redis.io/releases/redis-4.0.9.tar.gz

解压到指定文件夹

tar zxvf redis-4.0.9.tar.gz -C /soft

重命名

mv redis-4.0.9 redis

编译

make

编译成功之后，进入src文件下，执行make install

make install

2.部署

创建bin和etc文件夹

mkdir -p /soft/redis/bin

mkdir -p /soft/redis/etc

将src下的文件移动到bin下

mv mkreleasedhdr.sh redis-benchmark redis-check-aof redis-check-rdb redis-cli redis-server /soft/redis/bin

ll.png

将redis下的redis.conf移动到etc下

mv /soft/redis/redis.conf /soft/redis/etc

编辑redis.conf 文件，将daemonize属性改为yes

配置全局变量

vi /etc/profile

export PATH=/soft/redis/bin$:PATH --->添加该代码

source /etc/profile --->执行

执行redis-server命令，启动redis

redis-server

3.错误解决

1. 第一个警告：

The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.

意思是：TCP backlog设置值，511没有成功，因为 /proc/sys/net/core/somaxconn这个设置的是更小的128在/etc/sysctl.conf中添加如下

    net.core.somaxconn = 2048

2. 第二个警告：

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.

在/etc/sysctl.conf中添加如下

    vm.overcommit_memory = 1

3. 第三个警告：

you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix thisissue 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 thesetting after a reboot. Redis must be restarted after THP is disabled.

意思是：你使用的是透明大页，可能导致redis延迟和内存使用问题。

    cd /etc/default

    vi grub

在GRUB_CMDLINE_LINUX="crashkernel=auto rhgb quiet net.ifnames=0 console=tty0 console=ttyS0,115200n8"中添加transparent_hugepage=never

ll2.png

再执行命令

    grub2-mkconfig -o /boot/grub2/grub.cfg

重启

    init 6

参考网站：https://www.linuxidc.com/Linux/2018-05/152459.htm
https://www.cnblogs.com/zhaoyan001/p/6143170.html