使用DockerCompose搭建高可用Redis集群

如今业务系统对于缓存Redis的依赖似乎是必不可少的，我们可以在各种各样的系统中看到Redis的身影。考虑到系统运行的稳定性，Redis的应用和MySQL数据库一样需要做到高可用部署。

成都创新互联公司是创新、创意、研发型一体的综合型网站建设公司，自成立以来公司不断探索创新，始终坚持为客户提供满意周到的服务，在本地打下了良好的口碑，在过去的10余年时间我们累计服务了上千家以及全国政企客户，如成都边坡防护网等企业单位，完善的项目管理流程，严格把控项目进度与质量监控加上过硬的技术实力获得客户的一致赞美。

一、Redis 的多种高可用方案

常见的Redis的高可用方案有以下几种：

Redis Replication（主从复制）：Redis的主从复制可以实现数据的备份和读写分离。通过配置主节点和从节点，主节点将数据异步复制到从节点上。当主节点发生故障时，一个从节点可以被提升为新的主节点，实现故障转移。主从复制适用于对读操作较多、对可用性要求较高的场景。
Redis Sentinel（哨兵模式）：哨兵模式是Redis官方推荐的实现高可用的方案之一。通过运行一个或多个Sentinel进程，监控Redis主节点的状态。当主节点故障时，Sentinel会自动进行故障转移，将其中一个从节点提升为新的主节点。哨兵还可以监控从节点并进行故障恢复。哨兵模式适用于对高可用性要求不是特别高的场景。
Redis Cluster（集群模式）：Redis Cluster是Redis官方提供的高可用和分布式解决方案。通过将多个Redis实例组成一个集群，Redis Cluster提供了自动的数据分片和高可用性。数据被分配到不同的节点上，并使用Gossip协议进行节点之间的通信。当有节点发生故障时，Redis Cluster可以自动将数据迁移到其他正常的节点上。Redis Cluster适用于对可用性和扩展性要求较高的场景。集群模式只能存储在db0。
第三方中间件/解决方案：除了Redis官方提供的高可用方案，还有一些第三方中间件或解决方案可以用于实现Redis的高可用，如Codis、Twemproxy等。这些中间件提供了更多的功能和扩展性，如代理、负载均衡、故障恢复等。

在选择高可用方案时，需要考虑系统的可用性需求、数据一致性要求、网络拓扑等因素。同时，也要注意进行适当的测试和监控，确保Redis集群的稳定性和高可用性。

二、使用Docker Compose安装Redis并配置哨兵模式（Redis Sentinel）

1、环境准备

集群的架构一般服务器为奇数台，所以，如果是采用集群模式，那么至少准备3台Linux服务器，受生产环境所限，我们只有两台Linux服务器，但是我们可以使用Docker搭建多个Redis服务(Redis主服务1、Redis从服务2、Redis从服务3)：

192.168.0.210 (Redis主服务1、Redis从服务2)。
192.168.0.195 (Redis从服务3)。

2、准备Redis文件存放目录

准备Redis存储目录，在两台主从服务器上分别执行一下命令。
在192.168.0.210服务器上执行Redis主服务1所需目录及权限命令。

mkdir -p /opt/container/redis/master/data /opt/container/redis/master/conf /opt/container/redis/master/logs /opt/container/redis/sentinel/data /opt/container/redis/sentinel/conf /opt/container/redis/sentinel/logs

chmod -R 777 /opt/container/redis/master/data /opt/container/redis/master/conf /opt/container/redis/master/logs /opt/container/redis/sentinel/data /opt/container/redis/sentinel/conf /opt/container/redis/sentinel/logs

在192.168.0.210服务器上执行Redis从服务2所需目录及权限命令。

mkdir -p /opt/container/redis/slave1/data /opt/container/redis/slave1/conf /opt/container/redis/slave1/logs /opt/container/redis/sentinel1/data /opt/container/redis/sentinel1/conf /opt/container/redis/sentinel1/logs

chmod -R 777 /opt/container/redis/slave1/data /opt/container/redis/slave1/conf /opt/container/redis/slave1/logs /opt/container/redis/sentinel1/data /opt/container/redis/sentinel1/conf /opt/container/redis/sentinel1/logs

在192.168.0.195服务器上执行Redis从服务3所需目录及权限命令。

mkdir -p /opt/container/redis/slave2/data /opt/container/redis/slave2/conf /opt/container/redis/slave2/logs /opt/container/redis/sentinel2/data /opt/container/redis/sentinel2/conf /opt/container/redis/sentinel2/logs

chmod -R 777 /opt/container/redis/slave2/data /opt/container/redis/slave2/conf /opt/container/redis/slave2/logs /opt/container/redis/sentinel2/data /opt/container/redis/sentinel2/conf /opt/container/redis/sentinel2/logs

/opt/container/redis/ ** /data 用于存放Redis数据文件。
/opt/container/redis/ ** /conf 用于存放Redis配置文件。
/opt/container/redis/ ** /logs 用于存放Redis日志文件。

/opt/container/sentinel/ ** /data 用于存放Redis哨兵数据文件。
/opt/container/sentinel/ ** /conf 用于存放Redis哨兵配置文件。
/opt/container/sentinel/ ** /logs 用于存放Redis哨兵日志文件。

3、Redis服务器docker-compose.yml文件

192.168.0.210服务器上部署两个Redis服务(Redis主服务1、Redis从服务2)的docker-compose-redis.yml文件

version: '3'
services:
    ##redis主配置
    redisMaster:
      image: redis:latest
      restart: always
      container_name: redis-master
      command: redis-server /usr/local/etc/redis/redis.conf
      ##将26381映射到26381上
      ports:
        - "26381:26381"
      volumes:
        ##数据目录，要确保先创建好
        - /opt/container/redis/master/data:/data
        - /opt/container/redis/master/conf/redis.conf:/usr/local/etc/redis/redis.conf
        - /opt/container/redis/master/logs:/logs
        - "/etc/localtime:/etc/localtime"
        - "/usr/share/zoneinfo/Asia/Shanghai:/etc/timezone"
    ##redis从配置
    redisSlave1:
      image: redis:latest
      restart: always
      container_name: redis-slave-1
      command: redis-server /usr/local/etc/redis/redis.conf
      ##将26382映射到26382上
      ports:
        - "26382:26382"
      volumes:
        ##数据目录，要确保先创建好
        - /opt/container/redis/slave1/data:/data
        - /opt/container/redis/slave1/conf/redis.conf:/usr/local/etc/redis/redis.conf
        - /opt/container/redis/slave1/logs:/logs
        - "/etc/localtime:/etc/localtime"
        - "/usr/share/zoneinfo/Asia/Shanghai:/etc/timezone"
    sentinel:
      image: redis:latest
      restart: always
      container_name: redis-sentinel
      ports:
        - 36381:36381
      command: redis-sentinel /opt/redis/sentinel/sentinel.conf
      volumes:
        - /opt/container/redis/sentinel/data:/data
        - /opt/container/redis/sentinel/conf/sentinel.conf:/opt/redis/sentinel/sentinel.conf
        - /opt/container/redis/sentinel/logs:/logs
        - "/etc/localtime:/etc/localtime"
        - "/usr/share/zoneinfo/Asia/Shanghai:/etc/timezone"
    sentinel1:
      image: redis:latest
      restart: always
      container_name: redis-sentinel-1
      ports:
        - 36382:36382
      command: redis-sentinel /opt/redis/sentinel/sentinel1.conf
      volumes:
        - /opt/container/redis/sentinel1/data:/data
        - /opt/container/redis/sentinel1/conf/sentinel1.conf:/opt/redis/sentinel/sentinel1.conf
        - /opt/container/redis/sentinel1/logs:/logs
        - "/etc/localtime:/etc/localtime"
        - "/usr/share/zoneinfo/Asia/Shanghai:/etc/timezone"

192.168.0.195服务器上部署Redis服务(Redis从服务3)的docker-compose-redis-slave.yml文件。

version: '3'
services:
    ##redis从2配置
    redisSlave2:
      image: redis:latest
      restart: always
      container_name: redis-slave-2
      command: redis-server /usr/local/etc/redis/redis.conf
      ##将26383映射到26383上
      ports:
        - "26383:26383"
      volumes:
        ##数据目录，要确保先创建好
        - /opt/container/redis/slave2/data:/data
        - /opt/container/redis/slave2/conf/redis.conf:/usr/local/etc/redis/redis.conf
        - /opt/container/redis/slave2/logs:/logs
        - "/etc/localtime:/etc/localtime"
        - "/usr/share/zoneinfo/Asia/Shanghai:/etc/timezone"
    sentinel2:
      image: redis:latest
      restart: always
      container_name: redis-sentinel-2
      ports:
        - 36383:36383
      command: redis-sentinel /opt/redis/sentinel/sentinel2.conf
      volumes:
        - /opt/container/redis/sentinel2/data:/data
        - /opt/container/redis/sentinel2/conf/sentinel2.conf:/opt/redis/sentinel/sentinel2.conf
        - /opt/container/redis/sentinel2/logs:/logs
        - "/etc/localtime:/etc/localtime"
        - "/usr/share/zoneinfo/Asia/Shanghai:/etc/timezone"

4、准备Redis服务的配置文件

192.168.0.210主Redis配置文件，配置端口26381，Redis密码，并将配置文件redis.conf上传至/opt/container/redis/master/conf目录。

appendonly yes
port 26381
appendfilename appendonly.aof
appendfsync everysec
auto-aof-rewrite-min-size 10M
auto-aof-rewrite-percentage 100
requirepass "设置密码"
 
masterauth "设置密码" 
replica-read-only no

192.168.0.210从Redis配置文件，配置端口26382，密码，并将配置文件redis.conf上传至/opt/container/redis/slave1/conf目录。

appendonly yes
port 26382
appendfilename appendonly.aof
appendfsync everysec
auto-aof-rewrite-min-size 10M
auto-aof-rewrite-percentage 100
requirepass "设置密码"
 
replicaof 192.168.0.210 26381
masterauth "设置密码" 
replica-read-only no

192.168.0.195从Redis配置文件，配置端口26383，密码，并将配置文件redis.conf上传至/opt/container/redis/slave2/conf目录。

appendonly yes
port 26383
appendfilename appendonly.aof
appendfsync everysec
auto-aof-rewrite-min-size 10M
auto-aof-rewrite-percentage 100
requirepass "设置密码"
 
replicaof 192.168.0.210 26381
masterauth "设置密码" 
replica-read-only no

5、准备Redis哨兵的配置文件，每个Redis服务对应一个哨兵配置

192.168.0.210主Redis哨兵配置文件，配置哨兵sentinel实例运行的端口36381，Redis密码，并将配置文件sentinel.conf上传至/opt/container/redis/sentinel/conf目录。

# 哨兵sentinel实例运行的端口
port 36381
daemonize no
pidfile /var/run/redis-sentinel.pid
dir /tmp
sentinel monitor mymaster 192.168.0.210 26381 2
sentinel auth-pass mymaster "Redis密码"
# 指定多少毫秒之后 主节点没有应答哨兵sentinel 此时 哨兵主观上认为主节点下线 默认30秒
sentinel down-after-milliseconds mymaster 30000
# 指定了在发生failover主备切换时最多可以有多少个slave同时对新的master进行同步,这个数字越小，完成failover所需的时间就越长
sentinel parallel-syncs mymaster 1
# 故障转移的超时时间
sentinel failover-timeout mymaster 180000
sentinel deny-scripts-reconfig yes

192.168.0.210从Redis哨兵配置文件，配置哨兵sentinel1实例运行的端口36382，Redis密码，并将配置文件sentinel1.conf上传至/opt/container/redis/sentinel1/conf目录.

# 哨兵sentinel实例运行的端口
port 36382
daemonize no
pidfile /var/run/redis-sentinel1.pid
dir /tmp
sentinel monitor mymaster 192.168.0.210 26381 2
sentinel auth-pass mymaster "Redis密码"
# 指定多少毫秒之后 主节点没有应答哨兵sentinel 此时 哨兵主观上认为主节点下线 默认30秒
sentinel down-after-milliseconds mymaster 30000
# 指定了在发生failover主备切换时最多可以有多少个slave同时对新的master进行同步,这个数字越小，完成failover所需的时间就越长
sentinel parallel-syncs mymaster 1
# 故障转移的超时时间
sentinel failover-timeout mymaster 180000
sentinel deny-scripts-reconfig yes

192.168.0.195从Redis哨兵配置文件，配置哨兵sentinel2实例运行的端口36383，Redis密码，并将配置文件sentinel2.conf上传至/opt/container/redis/sentinel2/conf目录。

appendonly yes
port 26383
appendfilename appendonly.aof
appendfsync everysec
auto-aof-rewrite-min-size 10M
auto-aof-rewrite-percentage 100
requirepass "设置密码"
 
replicaof 192.168.0.210 26381
masterauth "设置密码" 
replica-read-only no

6、在两台服务器上分别执行docker-compose安装启动命令

将docker-compose-redis.yml上传至/opt/software目录，这个目录可以自己选择，然后到目录下执行安装启动命令。

docker-compose -f docker-compose-redis.yml up -d

[root@localhost software]# docker-compose -f docker-compose-redis.yml up -d
[+] Running 10/10
 ⠿ sentinel1 Pulled                                                                                                                                                                                                                        15.7s
 ⠿ redisSlave1 Pulled                                                                                                                                                                                                                      15.7s
 ⠿ sentinel Pulled                                                                                                                                                                                                                          3.4s
   ⠿ a2abf6c4d29d Already exists                                                                                                                                                                                                            0.0s
   ⠿ c7a4e4382001 Pull complete                                                                                                                                                                                                             0.4s
   ⠿ 4044b9ba67c9 Pull complete                                                                                                                                                                                                             1.0s
   ⠿ c8388a79482f Pull complete                                                                                                                                                                                                             2.3s
   ⠿ 413c8bb60be2 Pull complete                                                                                                                                                                                                             2.3s
   ⠿ 1abfd3011519 Pull complete                                                                                                                                                                                                             2.4s
 ⠿ redisMaster Pulled                                                                                                                                                                                                                      15.7s
WARN[0015] Found orphan containers ([mysql nginx]) for this project. If you removed or renamed this service in your compose file, you can run this command with the --remove-orphans flag to clean it up. 
[+] Running 4/4
 ⠿ Container redis-sentinel-1  Started                                                                                                                                                                                                      0.5s
 ⠿ Container redis-slave-1     Started                                                                                                                                                                                                      0.6s
 ⠿ Container redis-master      Started                                                                                                                                                                                                      0.6s
 ⠿ Container redis-sentinel    Started                                                                                                                                                                                                      0.5s

通过docker ps命令可以看到redis和redis哨兵已经安装并启动成功。

[root@localhost software]# docker ps
CONTAINER ID   IMAGE          COMMAND                  CREATED          STATUS          PORTS                                                                            NAMES
f609322cabaa   redis:latest   "docker-entrypoint.s…"   59 seconds ago   Up 58 seconds   6379/tcp, 0.0.0.0:26381->26381/tcp, :::26381->26381/tcp                          redis-master
18b75828b5b7   redis:latest   "docker-entrypoint.s…"   59 seconds ago   Up 58 seconds   6379/tcp, 0.0.0.0:36381->36381/tcp, :::36381->36381/tcp                          redis-sentinel
f0f9a037c7ae   redis:latest   "docker-entrypoint.s…"   59 seconds ago   Up 58 seconds   6379/tcp, 0.0.0.0:26382->26382/tcp, :::26382->26382/tcp                          redis-slave-1
e51d3b0bc696   redis:latest   "docker-entrypoint.s…"   59 seconds ago   Up 58 seconds   6379/tcp, 0.0.0.0:36382->36382/tcp, :::36382->36382/tcp                          redis-sentinel-1

7、通过命令查看redis哨兵状态

进入docker容器

docker exec -it f609322cabaa bash

cd /usr/local/bin

运行info Replication命令查看主节点信息，我们可以看到connected_slaves有2个，其中slave0的ip为172.18.0.1，这是因为其获取的是docker的ip地址。

./redis-cli  -h 127.0.0.1 -p 26381 -a "密码" info Replication

# Replication
role:master
connected_slaves:2
slave0:ip=172.18.0.1,port=26382,state=online,offset=700123,lag=0
slave1:ip=192.168.0.195,port=26383,state=online,offset=700123,lag=0
master_failover_state:no-failover
master_replid:9ee56f68d25b71158544f6cfafc677822c401ec3
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:700123
second_repl_offset:-1
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1
repl_backlog_histlen:700123

同样的操作方式进入到Sentinel容器，通过INFO Sentinel命令查看哨兵信息，我们可以看到有两个redis从服务，三个哨兵。

root@fba6d91e10f6:/usr/local/bin# ./redis-cli -h 127.0.0.1 -p 36381 INFO Sentinel
# Sentinel
sentinel_masters:1
sentinel_tilt:0
sentinel_running_scripts:0
sentinel_scripts_queue_length:0
sentinel_simulate_failure_flags:0
master0:name=mymaster,status=ok,address=192.168.0.210:26381,slaves=2,sentinels=3

8、测试redis哨兵主备切换

手动关闭主Redis服务。

docker stop 5541698b65a1

进入到Sentinel容器，通过INFO Sentinel命令查看哨兵信息，可以看到主Redis服务地址已经切换到192.168.0.195:26383。

root@fba6d91e10f6:/usr/local/bin# ./redis-cli -h 127.0.0.1 -p 36381 INFO Sentinel
# Sentinel
sentinel_masters:1
sentinel_tilt:0
sentinel_running_scripts:0
sentinel_scripts_queue_length:0
sentinel_simulate_failure_flags:0
master0:name=mymaster,status=ok,address=192.168.0.195:26383,slaves=3,sentinels=3

进入到192.168.0.195的Redis容器，info Replication命令查看节点信息，我们可以看到此Redis节点已变为主服务，有一个从服务slave0:ip=192.168.0.210,port=26382。

./redis-cli  -h 127.0.0.1 -p 26383 -a "密码" info Replication

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
# Replication
role:master
connected_slaves:1
slave0:ip=192.168.0.210,port=26382,state=online,offset=894509,lag=0
master_failover_state:no-failover
master_replid:e9ebebdff0a5f7b7622c6c5fbfed7b1e44d84ae2
master_replid2:9ee56f68d25b71158544f6cfafc677822c401ec3
master_repl_offset:894509
second_repl_offset:884279
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:846
repl_backlog_histlen:893664

三、配置并测试Redis集群模式（Redis Cluster）

Redis哨兵模式其实质还是主从复制，只不过加了哨兵进行自动主备切换，Redis集群模式（Redis Cluster）才是真正意义上的集群部署，它可以将数据进行分布式分片存储，但是其只能存储到db0。

1、环境准备

我们仍然使用上面的Linux服务器环境进行安装redis集群：在192.168.0.210上安装redisCluster1、redisCluster2、redisCluster3三台Reids服务；在在192.168.0.195上安装redisCluster4、redisCluster5、redisCluster6三台Reids服务。

2、准备Redis文件存放目录

准备Redis存储目录，在两台主从服务器上分别执行一下命令。
在192.168.0.210服务器上执行Redis集群所需目录及权限命令。

mkdir -p /opt/container/redis/cluster1/data /opt/container/redis/cluster1/conf /opt/container/redis/cluster1/logs /opt/container/redis/cluster2/data /opt/container/redis/cluster2/conf /opt/container/redis/cluster2/logs /opt/container/redis/cluster3/data /opt/container/redis/cluster3/conf /opt/container/redis/cluster3/logs

chmod -R 777 /opt/container/redis/cluster1/data /opt/container/redis/cluster1/conf /opt/container/redis/cluster1/logs /opt/container/redis/cluster2/data /opt/container/redis/cluster2/conf /opt/container/redis/cluster2/logs /opt/container/redis/cluster3/data /opt/container/redis/cluster3/conf /opt/container/redis/cluster3/logs

在192.168.0.195服务器上执行Redis集群所需目录及权限命令。

mkdir -p /opt/container/redis/cluster4/data /opt/container/redis/cluster4/conf /opt/container/redis/cluster4/logs /opt/container/redis/cluster5/data /opt/container/redis/cluster5/conf /opt/container/redis/cluster5/logs  /opt/container/redis/cluster6/data /opt/container/redis/cluster6/conf /opt/container/redis/cluster6/logs 

chmod -R 777 /opt/container/redis/cluster4/data /opt/container/redis/cluster4/conf /opt/container/redis/cluster4/logs /opt/container/redis/cluster5/data /opt/container/redis/cluster5/conf /opt/container/redis/cluster5/logs /opt/container/redis/cluster6/data /opt/container/redis/cluster6/conf /opt/container/redis/cluster6/logs

192.168.0.210 /192.168.0.195Redis配置文件、端口（12381、12382、12383、12384、12385、12386）、密码，并将配置文件redis.conf上传至对应目录，只需要端口不同。

port 12381
cluster-enabled yes #启动集群模式
cluster-config-file nodes-1.conf
cluster-node-timeout 5000
cluster-announce-ip 192.168.0.210
cluster-announce-port 12381
cluster-announce-bus-port 22381
bind 0.0.0.0
protected-mode no
appendonly yes
#如果要设置密码需要增加如下配置：
 #(设置redis访问密码)
requirepass 密码
 #(设置集群节点间访问密码，跟上面一致)
masterauth 密码

3、Redis服务器docker-compose.yml文件

192.168.0.210服务器上部署两个Redis服务的docker-compose-redis-cluster.yml文件。

version: '3'
services:
    ##redis节点1配置
    redisCluster1:
      image: redis:latest
      restart: always
      network_mode: "host"
      container_name: redis-cluster1
      command: redis-server /usr/local/etc/redis/redis.conf
      volumes:
        ##数据目录，要确保先创建好
        - /opt/container/redis/cluster1/data:/data
        - /opt/container/redis/cluster1/conf/redis.conf:/usr/local/etc/redis/redis.conf
        - /opt/container/redis/cluster1/logs:/logs
        - "/etc/localtime:/etc/localtime"
        - "/usr/share/zoneinfo/Asia/Shanghai:/etc/timezone"
    ##redis节点2配置
    redisCluster2:
      image: redis:latest
      restart: always
      network_mode: "host"
      container_name: redis-cluster2
      command: redis-server /usr/local/etc/redis/redis.conf
      volumes:
        ##数据目录，要确保先创建好
        - /opt/container/redis/cluster2/data:/data
        - /opt/container/redis/cluster2/conf/redis.conf:/usr/local/etc/redis/redis.conf
        - /opt/container/redis/cluster2/logs:/logs
        - "/etc/localtime:/etc/localtime"
        - "/usr/share/zoneinfo/Asia/Shanghai:/etc/timezone"
    ##redis节点3配置
    redisCluster3:
      image: redis:latest
      restart: always
      network_mode: "host"
      container_name: redis-cluster3
      command: redis-server /usr/local/etc/redis/redis.conf
      volumes:
        ##数据目录，要确保先创建好
        - /opt/container/redis/cluster3/data:/data
        - /opt/container/redis/cluster3/conf/redis.conf:/usr/local/etc/redis/redis.conf
        - /opt/container/redis/cluster3/logs:/logs
        - "/etc/localtime:/etc/localtime"
        - "/usr/share/zoneinfo/Asia/Shanghai:/etc/timezone"

192.168.0.195服务器上部署三个Redis服务的docker-compose-redis-cluster.yml文件。

version: '3'
services:
    ##redis节点4配置
    redisCluster4:
      image: redis:latest
      restart: always
      network_mode: "host"
      container_name: redis-cluster4
      command: redis-server /usr/local/etc/redis/redis.conf
      volumes:
        ##数据目录，要确保先创建好
        - /opt/container/redis/cluster4/data:/data
        - /opt/container/redis/cluster4/conf/redis.conf:/usr/local/etc/redis/redis.conf
        - /opt/container/redis/cluster4/logs:/logs
        - "/etc/localtime:/etc/localtime"
        - "/usr/share/zoneinfo/Asia/Shanghai:/etc/timezone"
    ##redis节点5配置
    redisCluster5:
      image: redis:latest
      restart: always
      network_mode: "host"
      container_name: redis-cluster5
      command: redis-server /usr/local/etc/redis/redis.conf
      volumes:
        ##数据目录，要确保先创建好
        - /opt/container/redis/cluster5/data:/data
        - /opt/container/redis/cluster5/conf/redis.conf:/usr/local/etc/redis/redis.conf
        - /opt/container/redis/cluster5/logs:/logs
        - "/etc/localtime:/etc/localtime"
        - "/usr/share/zoneinfo/Asia/Shanghai:/etc/timezone"
    ##redis节点6配置
    redisCluster6:
      image: redis:latest
      restart: always
      network_mode: "host"
      container_name: redis-cluster6
      command: redis-server /usr/local/etc/redis/redis.conf
      volumes:
        ##数据目录，要确保先创建好
        - /opt/container/redis/cluster6/data:/data
        - /opt/container/redis/cluster6/conf/redis.conf:/usr/local/etc/redis/redis.conf
        - /opt/container/redis/cluster6/logs:/logs
        - "/etc/localtime:/etc/localtime"
        - "/usr/share/zoneinfo/Asia/Shanghai:/etc/timezone"

4、在两台服务器上分别执行docker-compose安装启动命令

将
docker-compose-redis-cluster.yml上传至/opt/software目录，这个目录可以自己选择，然后到目录下执行安装启动命令。

docker-compose -f docker-compose-redis-cluster.yml up -d

[+] Running 3/3
 ⠿ Container redis-cluster3  Started                                                                                                                                                                                                        0.5s
 ⠿ Container redis-cluster2  Started                                                                                                                                                                                                        0.4s
 ⠿ Container redis-cluster1  Started                                                                                                                                                                                                        0.5s

通过docker ps命令可以看到redis和redis哨兵已经安装并启动成功。

[root@localhost software]# docker ps
CONTAINER ID   IMAGE          COMMAND                  CREATED          STATUS             PORTS                                                                            NAMES
67a48962160d   redis:latest   "docker-entrypoint.s…"   10 seconds ago   Up 9 seconds       6379/tcp, 0.0.0.0:52381->52381/tcp, :::52381->52381/tcp                          redis-cluster1
b10f669691b3   redis:latest   "docker-entrypoint.s…"   10 seconds ago   Up 9 seconds       6379/tcp, 0.0.0.0:52383->52383/tcp, :::52383->52383/tcp                          redis-cluster3
d3899c9c01f6   redis:latest   "docker-entrypoint.s…"   10 seconds ago   Up 9 seconds       6379/tcp, 0.0.0.0:52382->52382/tcp, :::52382->52382/tcp                          redis-cluster2

5、在两台服务器上分别执行docker-compose安装启动命令

登录到docker容器中。

docker exec -it 67a48962160d bash

用redis-cli创建整个redis集群。

cd /usr/local/bin

root@localhost:/usr/local/bin# ./redis-cli --cluster create 192.168.0.210:12381 192.168.0.210:12382 192.168.0.210:12383 192.168.0.195:12384 192.168.0.195:12385 192.168.0.195:12386 --cluster-replicas 1 -a "密码"
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
>>> Performing hash slots allocation on 6 nodes...
Master[0] -> Slots 0 - 5460
Master[1] -> Slots 5461 - 10922
Master[2] -> Slots 10923 - 16383
Adding replica 192.168.0.195:12386 to 192.168.0.210:12381
Adding replica 192.168.0.210:12383 to 192.168.0.195:12384
Adding replica 192.168.0.195:12385 to 192.168.0.210:12382
M: 061d7b1bf2f93df7cbf261e47a7981800d636e63 192.168.0.210:12381
   slots:[0-5460] (5461 slots) master
M: 6cfbf9677ab802483ddc7cbb715fe770c8de884a 192.168.0.210:12382
   slots:[10923-16383] (5461 slots) master
S: 5afc2e7d2da8f9d7f7ad6e99d5ad04ffbf5bdfe5 192.168.0.210:12383
   replicates d54562615048044b43e368db71789829d76fa263
M: d54562615048044b43e368db71789829d76fa263 192.168.0.195:12384
   slots:[5461-10922] (5462 slots) master
S: 9137f05da40ce173a975fa4a5e86e65b9d3fe4e3 192.168.0.195:12385
   replicates 6cfbf9677ab802483ddc7cbb715fe770c8de884a
S: de04b0b6d207bd8653f2cb738cb47443c427810e 192.168.0.195:12386
   replicates 061d7b1bf2f93df7cbf261e47a7981800d636e63
Can I set the above configuration? (type 'yes' to accept): yes
>>> Nodes configuration updated
>>> Assign a different config epoch to each node
>>> Sending CLUSTER MEET messages to join the cluster
Waiting for the cluster to join

>>> Performing Cluster Check (using node 192.168.0.210:12381)
M: 061d7b1bf2f93df7cbf261e47a7981800d636e63 192.168.0.210:12381
   slots:[0-5460] (5461 slots) master
   1 additional replica(s)
S: 5afc2e7d2da8f9d7f7ad6e99d5ad04ffbf5bdfe5 192.168.0.210:12383
   slots: (0 slots) slave
   replicates d54562615048044b43e368db71789829d76fa263
S: 9137f05da40ce173a975fa4a5e86e65b9d3fe4e3 192.168.0.195:12385
   slots: (0 slots) slave
   replicates 6cfbf9677ab802483ddc7cbb715fe770c8de884a
M: d54562615048044b43e368db71789829d76fa263 192.168.0.195:12384
   slots:[5461-10922] (5462 slots) master
   1 additional replica(s)
S: de04b0b6d207bd8653f2cb738cb47443c427810e 192.168.0.195:12386
   slots: (0 slots) slave
   replicates 061d7b1bf2f93df7cbf261e47a7981800d636e63
M: 6cfbf9677ab802483ddc7cbb715fe770c8de884a 192.168.0.210:12382
   slots:[10923-16383] (5461 slots) master
   1 additional replica(s)
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.

登录redis，并查看集群信息。

# 查看集群信息
cluster info
# 查看节点列表
cluster nodes

[root@localhost software]# docker exec -it 407e3847371a bash
root@localhost:/data# cd /usr/local/bin
root@localhost:/usr/local/bin# redis-cli -c -h 127.0.0.1 -p 12383 -a "密码"
127.0.0.1:12383> cluster info
cluster_state:ok
cluster_slots_assigned:16384
cluster_slots_ok:16384
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:6
cluster_size:3
cluster_current_epoch:6
cluster_my_epoch:4
cluster_stats_messages_ping_sent:173
cluster_stats_messages_pong_sent:163
cluster_stats_messages_meet_sent:1
cluster_stats_messages_sent:337
cluster_stats_messages_ping_received:163
cluster_stats_messages_pong_received:174
cluster_stats_messages_received:337
127.0.0.1:12383> cluster nodes
061d7b1bf2f93df7cbf261e47a7981800d636e63 192.168.0.210:12381@22381 master - 0 1696952366541 1 connected 0-5460
de04b0b6d207bd8653f2cb738cb47443c427810e 192.168.0.195:12386@22386 slave 061d7b1bf2f93df7cbf261e47a7981800d636e63 0 1696952366541 1 connected
5afc2e7d2da8f9d7f7ad6e99d5ad04ffbf5bdfe5 192.168.0.210:12383@22383 slave d54562615048044b43e368db71789829d76fa263 0 1696952366039 4 connected
9137f05da40ce173a975fa4a5e86e65b9d3fe4e3 192.168.0.195:12385@22385 slave 6cfbf9677ab802483ddc7cbb715fe770c8de884a 0 1696952367043 2 connected
6cfbf9677ab802483ddc7cbb715fe770c8de884a 192.168.0.210:12382@22382 master - 0 1696952365537 2 connected 10923-16383
d54562615048044b43e368db71789829d76fa263 192.168.0.195:12383@22384 myself,master - 0 1696952366000 4 connected 5461-10922

搭建Redis集群模式一定要注意，docker-compose配置一定要将network_mode设置为"host"模式，且不需要端口映射。如果创建集群时，一直显示等待连接，那么需要配置防火墙，放开Redis集群端口。

网站栏目：使用DockerCompose搭建高可用Redis集群
文章来源：http://www.36103.cn/qtweb/news19/21219.html

网站建设、网络推广公司-创新互联，是专注品牌与效果的网站制作，网络营销seo公司；服务项目有等

声明：本网站发布的内容（图片、视频和文字）以用户投稿、用户转载内容为主，如果涉及侵权请尽快告知，我们将会在第一时间删除。文章观点不代表本网站立场，如需处理请联系客服。电话：028-86922220；邮箱：631063699@qq.com。内容未经允许不得转载，或转载时需注明来源：创新互联

猜你还喜欢下面的内容