通过docker设置redis集群的问题

Question

我正在尝试使用 docker image 配置 Redis 集群bitnami/redis-cluster。

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以下是docker-compose.yml：

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version: \'3.8\'\n\nservices:\n  redis-node-0:\n    image: bitnami/redis-cluster:6.2.7\n    volumes:\n      - redis-node-data-0:/bitnami/redis/data\n    environment:\n      - ALLOW_EMPTY_PASSWORD=yes\n      - REDIS_NODES=redis-node-0 redis-node-1 redis-node-2\n\n  redis-node-1:\n    image: bitnami/redis-cluster:6.2.7\n    volumes:\n      - redis-node-data-1:/bitnami/redis/data\n    environment:\n      - ALLOW_EMPTY_PASSWORD=yes\n      - REDIS_NODES=redis-node-0 redis-node-1 redis-node-2\n\n  redis-node-2:\n    image: bitnami/redis-cluster:6.2.7\n    volumes:\n      - redis-node-data-2:/bitnami/redis/data\n    ports:\n      - 6379:6379\n    depends_on:\n      - redis-node-0\n      - redis-node-1\n    environment:\n      - ALLOW_EMPTY_PASSWORD=yes\n      - REDIS_NODES=redis-node-0 redis-node-1 redis-node-2\n      - REDIS_CLUSTER_REPLICAS=1\n      - REDIS_CLUSTER_CREATOR=yes\n\nvolumes:\n  redis-node-data-0:\n    driver: local\n  redis-node-data-1:\n    driver: local\n  redis-node-data-2:\n    driver: local\nnetworks:\n  default:\n    name: local_network\n\n

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Docker 容器正在完美运行：\n输出docker ps：

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集装箱编号	图像	命令	已创建	地位	端口	名称
bea9a7c52eba	bitnami/redis 集群：6.2.7	“/opt/bitnami/script\xe2\x80\xa6”	12 分钟前	12 分钟前	0.0.0.0:6379->6379/tcp	本地-redis-节点-2-1
63c08f1330e0	bitnami/redis 集群：6.2.7	“/opt/bitnami/script\xe2\x80\xa6”	12 分钟前	12 分钟前	6379/TCP	本地-redis-node-1-1
e1b163d75254	bitnami/redis 集群：6.2.7	“/opt/bitnami/script\xe2\x80\xa6”	12 分钟前	12 分钟前	6379/TCP	本地-redis-节点-0-1

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正如我所设置的local-redis-node-2-1那样REDIS_CLUSTER_CREATOR，现在它负责初始化集群。因此，我正在使用该节点执行以下所有命令。

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进入容器内部：docker exec -it local-redis-node-2-1 redis-cli

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然后，尝试将数据保存在 redis 中set a 1，出现错误：(error) CLUSTERDOWN Hash slot not serve

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输出cluster slots：(empty array)

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我试过docker exec -it local-redis-node-2-1 redis-cli --cluster fix localhost:6379。但它只分配6379 slots out of 16383给local-redis-node-2-1其他节点，剩余的插槽不会分配给其他节点。下面是输出cluster slots：

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127.0.0.1:6379> cluster slots\n1) 1) (integer) 0\n   2) (integer) 16383\n   3) 1) "172.18.0.9"\n      2) (integer) 6379\n      3) "819770cf8b39793517efa10b9751083c854e15d7"\n

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我做错事了。我也很想知道手动解决方案，但更感兴趣的是了解通过 docker-compose 设置集群插槽的解决方案。

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1. 有人可以帮助我通过 docker-compose.yml 自动设置集群插槽吗？

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2. 只读副本是否可以与此 docker-compose.yml 一起使用，或者我是否错过了某些内容？

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3. 另外，有人可以确认在解决集群插槽后集群是否可以正常工作吗？

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日志local-redis-node-2-1如下：

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redis-cluster 00:47:45.70 \nredis-cluster 00:47:45.73 Welcome to the Bitnami redis-cluster container\nredis-cluster 00:47:45.76 Subscribe to project updates by watching https://github.com/bitnami/containers\nredis-cluster 00:47:45.78 Submit issues and feature requests at https://github.com/bitnami/containers/issues\nredis-cluster 00:47:45.80 \nredis-cluster 00:47:45.83 INFO  ==> ** Starting Redis setup **\nredis-cluster 00:47:46.00 WARN  ==> You set the environment variable ALLOW_EMPTY_PASSWORD=yes. For safety reasons, do not use this flag in a production environment.\nredis-cluster 00:47:46.05 INFO  ==> Initializing Redis\nredis-cluster 00:47:46.29 INFO  ==> Setting Redis config file\nChanging old IP 172.18.0.8 by the new one 172.18.0.8\nChanging old IP 172.18.0.6 by the new one 172.18.0.6\nChanging old IP 172.18.0.9 by the new one 172.18.0.9\nredis-cluster 00:47:47.30 INFO  ==> ** Redis setup finished! **\n\n1:C 10 Dec 2022 00:47:47.579 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo\n1:C 10 Dec 2022 00:47:47.580 # Redis version=6.2.7, bits=64, commit=00000000, modified=0, pid=1, just started\n1:C 10 Dec 2022 00:47:47.580 # Configuration loaded\n1:M 10 Dec 2022 00:47:47.584 * monotonic clock: POSIX clock_gettime\n1:M 10 Dec 2022 00:47:47.588 * Node configuration loaded, I\'m 819770cf8b39793517efa10b9751083c854e15d7\n1:M 10 Dec 2022 00:47:47.595 # A key \'__redis__compare_helper\' was added to Lua globals which is not on the globals allow list nor listed on the deny list.\n1:M 10 Dec 2022 00:47:47.598 * Running mode=cluster, port=6379.\n1:M 10 Dec 2022 00:47:47.599 # Server initialized\n1:M 10 Dec 2022 00:47:47.612 * Ready to accept connections\n1:M 10 Dec 2022 00:47:49.673 # Cluster state changed: ok\n

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日志local-redis-node-1-1如下：

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redis-cluster 00:47:45.43 \nredis-cluster 00:47:45.46 Welcome to the Bitnami redis-cluster container\nredis-cluster 00:47:45.48 Subscribe to project updates by watching https://github.com/bitnami/containers\nredis-cluster 00:47:45.51 Submit issues and feature requests at https://github.com/bitnami/containers/issues\nredis-cluster 00:47:45.54 \nredis-cluster 00:47:45.56 INFO  ==> ** Starting Redis setup **\nredis-cluster 00:47:45.73 WARN  ==> You set the environment variable ALLOW_EMPTY_PASSWORD=yes. For safety reasons, do not use this flag in a production environment.\nredis-cluster 00:47:45.79 INFO  ==> Initializing Redis\nredis-cluster 00:47:46.00 INFO  ==> Setting Redis config file\nChanging old IP 172.18.0.8 by the new one 172.18.0.8\nChanging old IP 172.18.0.6 by the new one 172.18.0.6\nChanging old IP 172.18.0.9 by the new one 172.18.0.9\nredis-cluster 00:47:47.10 INFO  ==> ** Redis setup finished! **\n\n1:C 10 Dec 2022 00:47:47.387 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo\n1:C 10 Dec 2022 00:47:47.388 # Redis version=6.2.7, bits=64, commit=00000000, modified=0, pid=1, just started\n1:C 10 Dec 2022 00:47:47.388 # Configuration loaded\n1:M 10 Dec 2022 00:47:47.392 * monotonic clock: POSIX clock_gettime\n1:M 10 Dec 2022 00:47:47.395 * Node configuration loaded, I\'m 2ab0b8db952cc101f7873cdcf8cf691f8f6bae7b\n1:M 10 Dec 2022 00:47:47.403 # A key \'__redis__compare_helper\' was added to Lua globals which is not on the globals allow list nor listed on the deny list.\n1:M 10 Dec 2022 00:47:47.406 * Running mode=cluster, port=6379.\n1:M 10 Dec 2022 00:47:47.407 # Server initialized\n1:M 10 Dec 2022 00:47:47.418 * Ready to accept connections\n1:M 10 Dec 2022 00:56:02.716 # New configEpoch set to 1\n1:M 10 Dec 2022 00:56:41.943 # Cluster state changed: ok\n

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日志local-redis-node-0-1如下：

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redis-cluster 00:47:45.43 \nredis-cluster 00:47:45.46 Welcome to the Bitnami redis-cluster container\nredis-cluster 00:47:45.49 Subscribe to project updates by watching https://github.com/bitnami/containers\nredis-cluster 00:47:45.51 Submit issues and feature requests at https://github.com/bitnami/containers/issues\nredis-cluster 00:47:45.54 \nredis-cluster 00:47:45.56 INFO  ==> ** Starting Redis setup **\nredis-cluster 00:47:45.73 WARN  ==> You set the environment variable ALLOW_EMPTY_PASSWORD=yes. For safety reasons, do not use this flag in a production environment.\nredis-cluster 00:47:45.79 INFO  ==> Initializing Redis\nredis-cluster 00:47:46.00 INFO  ==> Setting Redis config file\nChanging old IP 172.18.0.8 by the new one 172.18.0.8\nChanging old IP 172.18.0.6 by the new one 172.18.0.6\nChanging old IP 172.18.0.9 by the new one 172.18.0.9\nredis-cluster 00:47:47.11 INFO  ==> ** Redis setup finished! **\n\n1:C 10 Dec 2022 00:47:47.387 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo\n1:C 10 Dec 2022 00:47:47.388 # Redis version=6.2.7, bits=64, commit=00000000, modified=0, pid=1, just started\n1:C 10 Dec 2022 00:47:47.388 # Configuration loaded\n1:M 10 Dec 2022 00:47:47.391 * monotonic clock: POSIX clock_gettime\n1:M 10 Dec 2022 00:47:47.395 * Node configuration loaded, I\'m 5ffeca48faa750a5f47c76639598fdb9b7b8b720\n1:M 10 Dec 2022 00:47:47.402 # A key \'__redis__compare_helper\' was added to Lua globals which is not on the globals allow list nor listed on the deny list.\n1:M 10 Dec 2022 00:47:47.405 * Running mode=cluster, port=6379.\n1:M 10 Dec 2022 00:47:47.405 # Server initialized\n1:M 10 Dec 2022 00:47:47.415 * Ready to accept connections\n

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