环境准备
一个机器上面整两个节点（机器不太够），三主三备：
| 序号 |
IP |
hostname |
OS |
软件 |
| 1 |
172.31.31.170 |
node1 |
RockyLinux 9.3 |
Redis 6379(主)
Redis 6380(备) |
| 2 |
172.31.31.171 |
node2 |
RockyLinux 9.3 |
Redis 6379(主)
Redis 6380(备) |
| 3 |
172.31.31.172 |
node3 |
RockyLinux 9.3 |
Redis 6379(主)
Redis 6380(备) |
登录各个节点分别执行：
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# 关闭selinux
sed -i 's/SELINUX=enforcing/SELINUX=permissive/' /etc/selinux/config && setenforce 0
# 关闭防火墙
systemctl disable firewalld --now
# 分别在1、2、3机器上执行
hostnamectl set-hostname node1/node2/node3
# 添加hosts解析
cat >> /etc/hosts <<-EOF
172.31.31.170 node1
172.31.31.171 node2
172.31.31.172 node3
EOF
# 新增redis用户
useradd redis
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安装Redis程序
编译环境：
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# 你可以直接安装这个，也可以自己安装gcc和make等工具
dnf groupinstall "Development Tools"
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安装好了以后下载源码编译就可以了，Redis源码地址：GitHub - redis/redis.
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##下载最新源码
wget https://github.com/redis/redis/archive/refs/tags/7.2.4.tar.gz
##解压Redis 源码
tar zxvf 7.2.4.tar.gz
##进入目录进行编译
cd redis-7.2.4 && make
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配置Redis
配置systemd
每个节点执行：
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cat > /usr/li/systemd/system/redis-6379.service<<-EOF
[Unit]
Description=Redis persistent key-value database
After=network.target
After=network-online.target
Wants=network-online.target
[Service]
ExecStart=/usr/bin/redis-server /etc/redis/redis_6379.conf --daemonize no --supervised systemd
ExecStop=/usr/libexec/redis-shutdown
Type=notify
User=redis
Group=redis
RuntimeDirectory=redis
RuntimeDirectoryMode=0755
[Install]
WantedBy=multi-user.target
EOF
cat > /usr/lib/systemd/system/redis-6380.service<<-EOF
[Unit]
Description=Redis persistent key-value database
After=network.target
After=network-online.target
Wants=network-online.target
[Service]
ExecStart=/usr/bin/redis-server /etc/redis/redis_6380.conf --daemonize no --supervised systemd
ExecStop=/usr/libexec/redis-shutdown
Type=notify
User=redis
Group=redis
RuntimeDirectory=redis
RuntimeDirectoryMode=0755
[Install]
WantedBy=multi-user.target
EOF
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新建配置文件
每个节点执行：
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cat > /etc/redis/redis_6379.conf <<-EOF
bind [机器IP，如：172.31.31.170]
port 6380
pidfile /var/run/redis_6379.pid
logfile /var/log/redis/redis_6379.log
dir /var/lib/redis/data/6379
cluster-enabled yes
cluster-config-file nodes-6379.conf
cluster-node-timeout 15000
appendonly yes
daemonize yes
EOF
cat > /etc/redis/redis_6379.conf <<-EOF
bind [机器IP，如：172.31.31.170]
port 6380
pidfile /var/run/redis_6380.pid
logfile /var/log/redis/redis_6380.log
dir /var/lib/redis/data/6380
cluster-enabled yes
cluster-config-file nodes-6380.conf
cluster-node-timeout 15000
appendonly yes
daemonize yes
EOF
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文件夹及其权限
每个机器执行：
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# 创建数据目录和日志目录
mkdir -p /var/lib/redis/data/6379
mkdir -p /var/lib/redis/data/6380
mkdir -p /var/log/redis
# 给与数据目录和日志目录权限
chown -R redis:redis /var/lib/redis
chown -R redis:redis /var/log/redis
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启动redis
每个机器执行：
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# 载入systemd配置文件
systemctl daemon-reload
# 启动程序
systemctl enable redis_6379 --now && systemctl enable redis_6380 --now
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创建集群
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# 创建
redis-cli --cluster create 172.31.31.170:6379 172.31.31.171:6379 172.31.31.172:6379 172.31.31.170:6380 172.31.31.171:6380 172.31.31.172:6380 --cluster-replicas 1
# 查看集群状态
redis-cli -c -h 172.31.31.170 -p 6379 cluster info
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