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
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
- 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
- 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
- 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
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
