接触linux不久，安装redis爬坑过来，在此记录分享！
一、安装redis
第一步：下载redis安装包
wget http://download.redis.io/releases/redis-4.0.6.tar.gz
[root@lin ~]$ wget http://download.redis.io/releases/redis-4.0.6.tar.gz
--2017-12-13 12:35:12-- http://download.redis.io/releases/redis-4.0.6.tar.gz
Resolving download.redis.io (download.redis.io)... 109.74.203.151
Connecting to download.redis.io (download.redis.io)|109.74.203.151|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1723533 (1.6M) [application/x-gzip]
Saving to: ‘redis-4.0.6.tar.gz’
100%[==========================================================================================================>] 1,723,533 608KB/s in 2.8s
2017-12-13 12:35:15 (608 KB/s) - ‘redis-4.0.6.tar.gz’ saved [1723533/1723533]
第二步：解压压缩包
tar -zxvf redis-4.0.6.tar.gz
[root@lin ~]$ tar -zxvf redis-4.0.6.tar.gz
第三步：yum安装gcc依赖
yum install gcc
[root@lin ~]$ yum install gcc
一路选择 Y 即可。
第四步：跳转到redis解压目录下
cd redis-4.0.6
[root@lin ~]$ cd redis-4.0.6
第五步：编译安装
make MALLOC=libc
[root@lin redis-4.0.6]$ make MALLOC=libc
将/usr/local/redis-4.0.6/src目录下的文件加到/usr/local/bin目录
注意：/user/local/根据自己安装设置的目录填写。（参考本机： /home/lin/ ）
cd src && make install
[root@lin redis-4.0.6]$ cd src && make install
CC Makefile.dep
Hint: It's a good idea to run 'make test' ;)
INSTALL install
INSTALL install
INSTALL install
INSTALL install
INSTALL install
二、启动redis的三种方式
先切换到redis src目录下
[root@lin redis-4.0.6]$ cd src
1、直接启动redis
./redis-server
[root@lin 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
按 ctrl + c可以关闭窗口。
2、以后台进程方式启动redis
第一步：修改redis.conf文件
将
daemonize no
修改为
daemonize yes
protected-mode no
第二步：指定redis.conf文件启动
./redis-server /usr/local/redis-4.0.6/redis.conf
[root@lin src]$ ./redis-server /usr/local/redis-4.0.6/redis.conf
18713:C 13 Dec 13:07:41.109 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
18713:C 13 Dec 13:07:41.109 # Redis version=4.0.6, bits=64, commit=00000000, modified=0, pid=18713, just started
18713:C 13 Dec 13:07:41.109 # Configuration loaded
第三步：关闭redis进程
首先使用ps -aux | grep redis查看redis进程
[root@lin src]$ 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(需要管理员权限）
[root@lin src]$ kill 18714
3、设置redis开机自启动
1、在/etc目录下新建redis目录
mkdir redis
进入 etc 可以直接 cd /etc
[root@lin etc]$ mkdir redis
2、将/usr/local/redis-4.0.6/redis.conf 文件复制一份到/etc/redis目录下，并命名为6379.conf
[root@lin redis]$ cp /usr/local/redis-4.0.6/redis.conf /etc/redis/6379.conf
3、将redis的启动脚本复制一份放到/etc/init.d目录下
[root@lin init.d]$ cp /usr/local/redis-4.0.6/utils/redis_init_script /etc/init.d/redisd
4、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
[root@lin init.d]$ chkconfig redisd on
service redisd does not support chkconfig
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
（vim 指定文件） 打开后 点击i 进行编辑 编辑完 按下ESC 然后打上命令 :wq
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。
#!/bin/sh
# chkconfig: 2345 90 10
# description: Redis is a persistent key-value database
再次执行开机自启命令，成功
[root@lin init.d]$ 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
[root@lin ~]$ service redisd start
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
关闭：
方法1：service redisd stop
[root@lin ~]$ service redisd stop
Stopping ...
Redis stopped
方法2：redis-cli SHUTDOWN
三、远程连接redis
在本地安装RedisDesktopManager 连接redis发现一直连接不上。
1、cmd ping linux ip 看是否可以连接成功。
2、检查端口是否开启
检查防火墙是否开启了6379端口：
执行命令：firewall-cmd --query-port=6379/tcp，如果出现no，此时执行命令：firewall-cmd --add-port=6379/tcp，将6379端口开启，返回success。