redis安装与使用

1. 环境准备：

2. 全部下载安装：

# yum install -y gcc gcc-c++ make openssl-devel pcre-devel
# cd /software
# wget  http://download.redis.io/releases/redis-6.2.5.tar.gz
# tar zxf redis-6.2.5.tar.gz && mv redis-6.2.5/ /usr/local/redis
# cd /usr/local/redis && make  MALLLOC=libc && make install
# echo $?
0

3. 全部配置成服务：

服务文件

# 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/bin/redis-server /usr/local/redis/redis.conf --supervised systemd
ExecStop=/usr/libexec/redis-shutdown
Type=notify
User=redis
Group=redis
RuntimeDirectory=redis
RuntimeDirectoryMode=0755

[Install]
WantedBy=multi-user.target

shutdown脚本

# vim /usr/libexec/redis-shutdown

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

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

# Retrieve service name
SERVICE_NAME="$1"
if [ -z "$SERVICE_NAME" ]; then
   SERVICE_NAME=redis
fi

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

执行命令

# chmod +x /usr/libexec/redis-shutdown

# useradd -s /sbin/nologin redis

# chown -R redis:redis /usr/local/redis

# mkdir -p /data/redis

# chown -R redis:redis /data/redis

# yum install -y bash-completion && source /etc/profile                 #命令补全

# systemctl daemon-reload

# systemctl enable redis

4. 修改配置：

overcommit_memory

192.168.1.243

# vim /usr/local/redis/redis.conf

#监听ip，多个ip用空格分隔
bind 192.168.1.243               
#允许后台启动
daemonize yes               
#日志路径
logfile "/usr/local/redis/redis.log"                
#数据库备份文件存放目录
dir /data/redis                 
#slave连接master密码，master可省略
masterauth njdys123              
#设置master连接密码，slave可省略
requirepass njdys123             

#在/data/redis/目录生成appendonly.aof文件，将每一次写操作请求都追加到appendonly.aof 文件中
appendonly yes                  

# echo 'vm.overcommit_memory=1' >> /etc/sysctl.conf

# sysctl -p

192.168.1.249

# vim /usr/local/redis/redis.conf

bind 192.168.1.249
daemonize yes
logfile "/usr/local/redis/redis.log"
dir /data/redis
replicaof 192.168.30.128 6379
masterauth njdys123
#requirepass njdys123
appendonly yes

# echo 'vm.overcommit_memory=1' >> /etc/sysctl.conf

# sysctl -p

192.168.1.250

# vim /usr/local/redis/redis.conf

bind 192.168.1.250
daemonize yes
logfile "/usr/local/redis/redis.log"
dir /data/redis
replicaof 192.168.30.128 6379
masterauth njdys123
#requirepass njdys123
appendonly yes

# echo 'vm.overcommit_memory=1' >> /etc/sysctl.conf

# sysctl -p

5. 全部启动redis：

# systemctl start redis

6. 启动错误

发现错误，6379端口被占用

参考：开启redis-server提示 # Creating Server TCP listening socket *:6379: bind: Address already in use--解决方法 - piwenfei - 博客园 (cnblogs.com)

退出后重新执行命令

/usr/local/bin/redis-server /usr/local/redis/redis.conf --supervised systemd