Redis安装

一、RPM安装：

1、下载Redis

链接：https://redis.io/download

安装最新版本使用remi：

wget http://rpmfind.net/linux/remi/enterprise/7/test/x86_64/redis-4.0.0-1.el7.remi.x86_64.rpm

2、yum安装

yum install redis-4.0.0-1.el7.remi.x86_64.rpm

错误提示：需要：libjemalloc.so.1()(64bit) （解决方法配置eple的yum源）

3、配置epel的yum源

yum install http://mirrors.163.com/centos/7.4.1708/extras/x86_64/Packages/epel-release-7-9.noarch.rpm

4、启动服务

systemctl stat redis

netstat -lnupt | grep 6379

ps -ef | grep redis

lsof -i tcp:6379

5、登陆

#redis-cli

 

二、源码安装：

1、下载Redis

链接：https://redis.io/download

2、依赖关系

yum install gcc gcc-c++ make -y

3、编译

# make

# make PREFIX=/usr/local/redis install

make报jemalloc/jemalloc.h错误

[root@resiones src]# make  
    CC adlist.o
In file included from adlist.c:34:0:
zmalloc.h:50:31: 致命错误：jemalloc/jemalloc.h：没有那个文件或目录
 #include 

解决办法

make MALLOC=libc


查看README
To force compiling against libc malloc, use:

    % make MALLOC=libc

To compile against jemalloc on Mac OS X systems, use:

    % make MALLOC=jemalloc

make  install PREFIX=/usr/local/redis/bin

4、进入/usr/local/redis/bin

命令解释：

1、redis-server 启动redis服务

2、redis-cli redis客户端工具

3、redis-benchmark redis性能测试

4、redis-check-rdb 检测rdb文件

5、redis-check-aof 检测aof日志文件

5、创建用户和组

groupadd -g 935 -r redis

useradd -u 935 -g 935 -r -d /var/lib/redis -c “redis server” -s /sbin/nologin redis

mkdir -p /var/lib/redis

chown -R redis /var/lib/redis

chmod -R 700 /var/lib/redis

6、修改配置文件 redis.conf

dir /var/lib/redis/

daemonize yes  #后台运行

7、创建服务脚本

# vim /usr/lib/systemd/system/redis.service

[Unit]
Description=Redis persistent key-value database
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
ExecStart=/usr/local/redis/bin/redis-server /usr/local/redis/bin/redis.conf --supervised systemd
ExecStop=/usr/local/redis/bin/redis-shutdown
Type=notify
User=redis
Group=redis
RuntimeDirectory=redis
RuntimeDirectoryMode=0755

[Install]
WantedBy=multi-user.target

redis关闭脚本 /usr/local/redis/bin/redis-shutdown

[root@resiones ~]# vim /usr/local/redis/bin/redis-shutdown

#!/bin/bash
#
# Wrapper to close properly redis and sentinel
test x"$REDIS_DEBUG" != x && set -x

REDIS_CLI=/usr/local/redis/bin/redis-cli

# Retrieve service name
SERVICE_NAME=redis


# Get the proper config file based on service name
CONFIG_FILE="/usr/local/redis/bin/$SERVICE_NAME.conf"

# Use awk to retrieve host, port from config file
HOST=`awk '/^[[:blank:]]*bind/ { print $2 }' $CONFIG_FILE | tail -n1`
PORT=`awk '/^[[:blank:]]*port/ { print $2 }' $CONFIG_FILE | tail -n1`
PASS=`awk '/^[[:blank:]]*requirepass/ { print $2 }' $CONFIG_FILE | tail -n1`
SOCK=`awk '/^[[:blank:]]*unixsocket\s/ { print $2 }' $CONFIG_FILE | tail -n1`

# Just in case, use default host, port
HOST=${HOST:-127.0.0.1}
if [ "$SERVICE_NAME" = redis ]; then
    PORT=${PORT:-6379}
else
    PORT=${PORT:-26739}
fi

# Setup additional parameters
# e.g password-protected redis instances
[ -z "$PASS"  ] || ADDITIONAL_PARAMS="-a $PASS"

# shutdown the service properly
if [ -e "$SOCK" ] ; then
        $REDIS_CLI -s $SOCK $ADDITIONAL_PARAMS shutdown
else
        $REDIS_CLI -h $HOST -p $PORT $ADDITIONAL_PARAMS shutdown
fi

8.登陆Redis数据库

redis-cli -h host -p port -a password

三、redis数据备份与恢复

1.启动redis

进入redis目录

redis-cli

2.数据备份

redis 127.0.0.1:6379> SAVE 

该命令将在 redis 备份目录中创建dump.rdb文件。

3.恢复数据

1、如果需要恢复数据，只需将备份文件 (dump.rdb) 移动到 redis 安装目录并启动服务即可。获取 redis 目录可以使用 CONFIG 命令，

redis 127.0.0.1:6379> CONFIG GET dir

1) "dir"

2) "/usr/local/redis/bin"　　　

以上命令 CONFIG GET dir 输出的 redis 备份目录为 /usr/local/redis/bin。

2、停止redis服务

3、拷贝备份文件到 /usr/local/redis/bin目录下

4、重新启动redis服务