Redis 数据迁移

Wed, 31 Jan 2024 18:09:00 +0800

环境

Redis: 5.0.14

源集群实例

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... 127.0.0.10:6371@16371 ... connected 0-5460
... 127.0.0.10:6372@16372 ... connected 5461-10922
... 127.0.0.10:6373@16373 ... connected 10923-16383

源集群密码: 123456

目的集群实例

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... 127.0.0.11:6371@16371 ... connected 0-5460
... 127.0.0.11:6372@16372 ... connected 5461-10922
... 127.0.0.11:6373@16373 ... connected 10923-16383

目的集群密码: 123456
redis 数据迁移工具: redis-dump-go

CentOS7 安装 Redis 集群

Fri, 29 Nov 2019 15:14:29 +0800

环境

操作系统: CentOS7.9，关闭 firewalld 和 selinux
Redis: 5.0.14
master 实例
- 10.0.4.110:6371
- 10.0.4.110:6372
- 10.0.4.110:6373
slave 实例
- 10.0.4.111:6371
- 10.0.4.111:6372
- 10.0.4.111:6373

编译 redis server

在 CentOS7.9 测试服务器上下载、编译

curl -LO http://download.redis.io/releases/redis-5.0.14.tar.gz
tar zxf redis-5.0.14.tar.gz
cd redis-5.0.14
make

抽取安装文件

mkdir -p /opt/redis/{bin,conf}
cp src/{redis-server,redis-cli,redis-benchmark} /opt/redis/bin/
cd /opt/redis/bin
ln -s redis-server redis-check-aof
ln -s redis-server redis-check-rdb
ln -s redis-server redis-sentinel

创建 /opt/redis/conf/redis-6379.conf，常用配置如下

Redis Sentinel

Wed, 30 Oct 2019 11:37:36 +0800

环境

主机名	地址	操作系统	初始状态
sentinel86	10.1.14.86	CentOS7.4	null
redis87	10.1.14.87	CentOS7.4	master
redis88	10.1.14.88	CentOS7.4	slave
redis89	10.1.14.89	CentOS7.4	slave

安装 redis

在全部服务器上安装 redis

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yum install epel-release
yum install redis

redis master 配置

在 redis87 上修改 /etc/redis.conf
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bind 0.0.0.0

redis slave 配置

在 redis88 和 redis89 上修改 /etc/redis.conf
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bind 0.0.0.0 slaveof 10.1.14.87 6379

redis sentinel 配置

在 sentinel86 上创建三个 sentinel 配置文件

cd /etc/
cp redis-sentinel.conf redis-sentinel-16379.conf
cp redis-sentinel.conf redis-sentinel-26379.conf
mv redis-sentinel.conf redis-sentinel-36379.conf
chown redis.root redis-sentinel-?6379.conf

修改 /etc/redis-sentinel-16379.conf

bind 0.0.0.0
port 16379
dir /var/log/redis/16379
sentinel monitor mymaster 10.1.14.87 6379 2
sentinel down-after-milliseconds mymaster 8000
logfile /var/log/redis/16379/sentinel.log

修改 /etc/redis-sentinel-26379.conf

bind 0.0.0.0
port 26379
dir /var/log/redis/26379
sentinel monitor mymaster 10.1.14.87 6379 2
sentinel down-after-milliseconds mymaster 8000
logfile /var/log/redis/26379/sentinel.log

修改 /etc/redis-sentinel-36379.conf

bind 0.0.0.0
port 36379
dir /var/log/redis/36379
sentinel monitor mymaster 10.1.14.87 6379 2
sentinel down-after-milliseconds mymaster 8000
logfile /var/log/redis/36379/sentinel.log

创建日志目录

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cd /var/log/redis/
mkdir 16379 26379 36379
chown redis.redis ?6379 -R

创建两个 sentinel service 文件

cd /usr/lib/systemd/system/
cp redis-sentinel.service redis-sentinel-16379.service
cp redis-sentinel.service redis-sentinel-26379.service
mv redis-sentinel.service redis-sentinel-36379.service

修改 /usr/lib/systemd/system/redis-sentinel-16379.service

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ExecStart=/usr/bin/redis-sentinel /etc/redis-sentinel-16379.conf --daemonize no
ExecStop=/usr/libexec/redis-shutdown redis-sentinel-16379

修改 /usr/lib/systemd/system/redis-sentinel-26379.service

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ExecStart=/usr/bin/redis-sentinel /etc/redis-sentinel-26379.conf --daemonize no
ExecStop=/usr/libexec/redis-shutdown redis-sentinel-26379

修改 /usr/lib/systemd/system/redis-sentinel-36379.service

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ExecStart=/usr/bin/redis-sentinel /etc/redis-sentinel-36379.conf --daemonize no
ExecStop=/usr/libexec/redis-shutdown redis-sentinel-36379

更新服务
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systemctl daemon-reload

启动 redis 服务

在 redis87、redis88 和 redis89 上启动 redis 服务

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systemctl start redis
# 查看当前节点主从信息
redis-cli info replication

启动 redis sentinel 监控

在 sentinel86 上启动 sentinel 监管程序

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systemctl start redis-sentinel-16379
systemctl start redis-sentinel-26379
systemctl start redis-sentinel-36379

Redis on Colben Notes