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cenos8安装redis7.0.11

1.下载：

1:https://redis.io/download/
2:https://download.redis.io/releases/?_gl=1*10x9wj*_ga*MTQ5MDEyMDY4Mi4xNjk1MTE3MjI2*_ga_8BKGRQKRPV*MTY5NTI2NDM2MS4yLjAuMTY5NTI2NDM2NC41Ny4wLjA.

下载好后把安装包上传至服务器

2.安装：

###解压redis：

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[root@node202 ~]# cd /usr/local/soft/
[root@node202 soft]# tar -zxvf redis-7.0.11.tar.gz

###安装：

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[root@node202 soft]# cd redis-7.0.11/
#安装必要类库
[root@node202 redis-7.0.11]# yum -y install gcc automake autoconf libtool make
[root@node202 redis-7.0.11]# make & make install

###启动

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[root@node202 redis-7.0.11]# cd src
[root@node202 src]# ./redis-server /usr/local/soft/redis-7.0.11/redis.conf

日志：

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8789:C 11 May 2023 01:53:49.076 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
8789:C 11 May 2023 01:53:49.076 # Redis version=7.0.11, bits=64, commit=00000000, modified=0, 	pid=8789, just started
8789:C 11 May 2023 01:53:49.076 # Configuration loaded
8789:M 11 May 2023 01:53:49.077 * Increased maximum number of open files to 10032 (it was 	originally set to 1024).
8789:M 11 May 2023 01:53:49.077 * monotonic clock: POSIX clock_gettime
                _._                                                  
           _.-``__ ''-._                                             
      _.-``    `.  `_.  ''-._           Redis 7.0.11 (00000000/0) 64 bit
 .-`` .-```.  ```\/    _.,_ ''-._                                  
(    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 8789
  `-._    `-._  `-./  _.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |           https://redis.io       
  `-._    `-._`-.__.-'_.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |                                  
  `-._    `-._`-.__.-'_.-'    _.-'                                   
  `-._    `-.__.-'    _.-'                                       
      `-._        _.-'                                           
          `-.__.-'                                               

8789:M 11 May 2023 01:53:49.078 # WARNING: The TCP backlog setting of 511 cannot be 	enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
8789:M 11 May 2023 01:53:49.078 # Server initialized
8789:M 11 May 2023 01:53:49.078 # WARNING Memory overcommit must be enabled! Without it, a 	background save or replication may fail under low memory condition. Being disabled, it can can also 	cause failures without low memory condition, see https://github.com/jemalloc/jemalloc/issues/1328. 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.
8789:M 11 May 2023 01:53:49.078 * Ready to accept connections

###使用

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[root@node202 src]# ./redis-cli 
127.0.0.1:6379> set foo bar
OK
127.0.0.1:6379> get foo
"bar"
127.0.0.1:6379>

##配置

创建一个用于存储 Redis 配置文件目录（/etc/redis）和数据目录（/var/redis）：

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mkdir -p /etc/redis
mkdir -p /var/redis

复制配置文件：

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cp /usr/local/soft/redis-7.0.11/redis.conf /etc/redis/

复制编辑启动脚本：

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cp /usr/local/soft/redis-7.0.11/utils/redis_init_script /etc/init.d/redis
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vim /etc/init.d/redis
#!/bin/sh
# 
# Simple Redis init.d script conceived to work on Linux systems
# as it does use of the /proc filesystem.

### BEGIN INIT INFO
# Provides:     redis_6379
# Default-Start:        2 3 4 5
# Default-Stop:         0 1 6
# Short-Description:    Redis data structure server
# Description:          Redis data structure server. See https://redis.io
### END INIT INFO

REDISPORT=6379
EXEC=/usr/local/bin/redis-server
CLIEXEC=/usr/local/bin/redis-cli

PIDFILE=/var/run/redis_${REDISPORT}.pid
CONF="/etc/redis/redis.conf"

case "$1" in
start)
    if [ -f $PIDFILE ]
    then
            echo "$PIDFILE exists, process is already running or crashed"
    else
            echo "Starting Redis server..."
            $EXEC $CONF
    fi
    ;;
stop)
    if [ ! -f $PIDFILE ]
    then
            echo "$PIDFILE does not exist, process is not running"
    else
            PID=$(cat $PIDFILE)
            echo "Stopping ..."
            $CLIEXEC -p $REDISPORT shutdown
            while [ -x /proc/${PID} ]
            do
                echo "Waiting for Redis to shutdown ..."
                sleep 1
            done
            echo "Redis stopped"
    fi
    ;;
restart)
    "$0" stop
    sleep 3
    "$0" start
    ;;
*)
    echo "Please use start or stop or restart as first argument"
    ;;
esac

设置开机自启动：

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chmod +x /etc/init.d/redis  #给脚本设置权限

chkconfig --add redis  #添加redis服务

chkconfig redis on  #设置redis服务开机启动

完结。

解决服务器Redis无法连接问题

找到你的redis配置文件，进行以下步骤修改。（本人的在/etc/redis.conf，如果找不到，直接创建一个，然后度娘一个默认的redis配置文件粘贴上去即可，启动时使用命令redis-cli +文件路径，下文会讲）

修改bind，默认为bind 127.0.0.1，将其注释(前面加个#)，如果没有找到bind 127.0.0.1或已经注释，跳过此步，注意搜索一下127.0.0.1，可能不止1个地方有

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# By default Redis listens for connections from all the network interfaces
# available on the server. It is possible to listen to just one or multiple
# interfaces using the "bind" configuration directive, followed by one or
# more IP addresses.
#
# Examples:
# bind 127.0.0.1

关闭保护模式，默认为protected-mode yes,将yes修改为no，如果没有找到protected-mode yes，可以随意另起一行添加protected-mode no；或已经修改为protected-mode no，跳过此步。

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# When protected mode is on and if:
#
# 1) The server is not binding explicitly to a set of addresses using the
#    "bind" directive.
# 2) No password is configured.
#
# The server only accepts connections from clients connecting from the
# IPv4 and IPv6 loopback addresses 127.0.0.1 and ::1, and from Unix domain
# sockets.
#
# By default protected mode is enabled. You should disable it only if
# you are sure you want clients from other hosts to connect to Redis
# even if no authentication is configured, nor a specific set of interfaces
# are explicitly listed using the "bind" directive.
protected-mode no

如果有需求，设置密码（没有需求则跳过），添加一行requirepass 123456，作用是设置连接密码为123456，如有需求可以修改密码

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################################## SECURITY ###################################

# Require clients to issue AUTH <PASSWORD> before processing any other
# commands.  This might be useful in environments in which you do not trust
# others with access to the host running redis-server.
#
# This should stay commented out for backward compatibility and because most
# people do not need auth (e.g. they run their own servers).
#
# Warning: since Redis is pretty fast an outside user can try up to
# 150k passwords per second against a good box. This means that you should
# use a very strong password otherwise it will be very easy to break.
#
# requirepass foobared
requirepass 123456

重启你的redis，在安装redis的位置使用命令redis-cli shutdown，然后再使用命令./redis-server /etc/redis.conf启动redis，请注意，如果你修改的配置文件在其他地方：例如/opt/redis/redis.conf，请你使用./redis-server /opt/redis/redis.conf启动redis。
如果启动后无法进行其他操作，请使用Ctrl+C结束该进程后，找到刚刚修改的配置文件，找到并修改为或者添加daemonize=yes（稍微提一嘴，windows版本不支持），然后再启动redis。

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daemonize=yes

最后关闭你的防火墙，或者将redis加入白名单，这里只做关闭处理，这一步操作因linux版本而异

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systemctl status firewalld.service  #查看防火墙状态
systemctl stop firewalld.service    #关闭防火墙
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