Redis的下载与安装

1.Redis下载

下载地址:https://redis.io/download

2.Redis安装

  • 将redis-6.2.6.tar.gz 上传到 /opt目录（也可以直接用yum下载到linux）
  • 进入 /opt目录 ，执行解压命令：tar-zxvf redis-6.2.6.tar.gz
  • 解压完成后进入redis-6.2.6目录：cd redis-6.2.6
  • 在redis-6.2.6目录下执行make命令（编译指令）
  • 执行 make install 进行安装
  • 到此安装完成 ， 安装目录在 /usr/local/bin

查看安装目录：

[root@chenbaohui bin]# ls
dump.rdb  redis-benchmark  redis-check-rdb  redis-sentinel
genhash   redis-check-aof  redis-cli        redis-server

redis-benchmark:性能测试工具，可以在自己机器运行，看看自己机器性能如何

redis-check-aof：修复有问题的AOF文件，

rdb和aof后面讲

redis-check-dump：修复有问题的dump.rdb 文件

redis-sentinel：Redis 集群使用

redis-server：Redis 服务器启动命令

redis-cli：客户端，操作入口

Redis启动/后台启动

直接启动

执行命令： redis-server

启动成功后显示以下内容：

[root@chenbaohui home]# redis-server
7997:C 01 Apr 2025 04:29:21.197 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
7997:C 01 Apr 2025 04:29:21.197 # Redis version=6.2.6, bits=64, commit=00000000, modified=0, pid=7997, just started
7997:C 01 Apr 2025 04:29:21.197 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf
7997:M 01 Apr 2025 04:29:21.198 * Increased maximum number of open files to 10032 (it was originally set to 1024).
7997:M 01 Apr 2025 04:29:21.198 * monotonic clock: POSIX clock_gettime
                _._                                                  
           _.-``__ ''-._                                             
      _.-``    `.  `_.  ''-._           Redis 6.2.6 (00000000/0) 64 bit
  .-`` .-```.  ```\/    _.,_ ''-._                                  
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 7997
  `-._    `-._  `-./  _.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |           https://redis.io       
  `-._    `-._`-.__.-'_.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |                                  
  `-._    `-._`-.__.-'_.-'    _.-'                                   
      `-._    `-.__.-'    _.-'                                       
          `-._        _.-'                                           
              `-.__.-'                                               

7997:M 01 Apr 2025 04:29:21.199 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
7997:M 01 Apr 2025 04:29:21.199 # Server initialized
7997:M 01 Apr 2025 04:29:21.199 # 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.
7997:M 01 Apr 2025 04:29:21.200 * Ready to accept connections

后台启动

后台启动需要配置修改redis.conf ， 然后以启动配置文件的方式启动redis

到目录/opt/redis-6.2.6/下找到redis.conf文件

[root@chenbaohui bin]# cd /opt/redis-6.2.6/
[root@chenbaohui redis-6.2.6]# ls
00-RELEASENOTES  dump.rdb    runtest            tests
BUGS             INSTALL     runtest-cluster    TLS.md
CONDUCT          Makefile    runtest-moduleapi  utils
CONTRIBUTING     MANIFESTO   runtest-sentinel
COPYING          README.md   sentinel.conf
deps             redis.conf  src

执行vi命令修改redis.conf文件 ，找到damonize no 将其修改为 damonize yes 表示以守护进程的方式启动redis，不会占用主进程

# By default Redis does not run as a daemon. Use 'yes' if you need it.
# Note that Redis will write a pid file in /var/run/redis.pid when daemonized.
# When Redis is supervised by upstart or systemd, this parameter has no impact.
daemonize yes

然后使用命令redis-server /opt/redis-6.2.6/redis.conf 启动redis服务，此时就可以操作控制台，而不是只有redis

[root@chenbaohui redis-6.2.6]# redis-server /opt/redis-6.2.6/redis.conf 
[root@chenbaohui redis-6.2.6]#

使用redis-cli命令可以进入redis

[root@chenbaohui redis-6.2.6]# redis-cli 
127.0.0.1:6379> keys *
(error) NOAUTH Authentication required.
127.0.0.1:6379> auth password
OK
127.0.0.1:6379>

关于一些Redis的Tip

1.远程访问reids需要在redis.conf中将bind 127.0.0.1 -::1修改为bind 0.0.0.0 -::1不然就只能在本机上访问redis

# IF YOU ARE SURE YOU WANT YOUR INSTANCE TO LISTEN TO ALL THE INTERFACES
# JUST COMMENT OUT THE FOLLOWING LINE.
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bind 0.0.0.0 -::1

2.redis的rbd持久化文件默认会保存到当前启动redis的目录 ， 如果要指定rbd保存的目录可以在redis.conf将dir ./ 改为dir “你要指定的目录” （这里我指定放在root目录下）

# The working directory.
#
# The DB will be written inside this directory, with the filename specified
# above using the 'dbfilename' configuration directive.
#
# The Append Only File will also be created inside this directory.
#
# Note that you must specify a directory here, not a file name.
#dir ./
dir /root/