redis关于NAT网络环境的配置
在redis的配置文件示例中, 有这么一段关于集群运行在NAT环境下的表述。
简单来讲，为了组成redis 集群拓扑，需要在配置中暴露节点最终的网络环境的静态信息。
redis 6.0 配置地址########################## CLUSTER DOCKER/NAT support ########################
# In certain deployments, Redis Cluster nodes address discovery fails, because
# addresses are NAT-ted or because ports are forwarded (the typical case is
# Docker and other containers).
#
# In order to make Redis Cluster working in such environments, a static
# configuration where each node kNows its public address is needed. The
# following two options are used for this scope, and are:
#
# * cluster-announce-ip
# * cluster-announce-port
# * cluster-announce-bus-port
#
# Each instructs the node about its address, client port, and cluster message
# bus port. The information is then published in the header of the bus packets
# so that other nodes will be able to correctly map the address of the node
# publishing the information.
#
# If the above options are not used, the normal Redis Cluster auto-detection
# will be used instead.
#
# Note that when remapped, the bus port may not be at the fixed offset of
# clients port + 10000, so you can specify any port and bus-port depending
# on how they get remapped. If the bus-port is not set, a fixed offset of
# 10000 will be used as usual.
#
# Example:
#
# cluster-announce-ip 10.1.1.5
# cluster-announce-port 6379
# cluster-announce-bus-port 6380docker-compose
参考上面的表述，在
docker-compose.yaml中可以配置REdis_CLUSTER_ANNOUNCE_IP为最终外部网络地址，启用redis-node-0~5六个节点，并且为了最终网络地址可知，构建虚拟网络，分配静态ip，最终使用redis-cluster-init进行集群拓扑的搭建，即使用官网的镜像，使用redis-cli执行以下命令。redis-cli -a Lucky2021 --cluster create 172.22.0.100:7000 172.22.0.101:7001 172.22.0.102:7002 172.22.0.103:7003 172.22.0.104:7004 172.22.0.105:7005 --cluster-replicas 1 --cluster-yesdocker-compose.yaml完整实例
执行 docker-compose up -d 启动集群
version: '3.8' services: redis-node-0: image: bitnami/redis-cluster container_name: redis-node-0 restart: always networks: redis: ipv4_address: 172.22.0.100 hostname: redis-node-0 environment: - 'REdis_PORT_NUMBER=7000' - 'REdis_PASSWORD=Lucky2021' - 'REdis_NODES=redis-node-0 redis-node-1 redis-node-2 redis-node-3 redis-node-4 redis-node-5' - 'REdis_CLUSTER_ANNOUNCE_PORT=7000' - 'REdis_CLUSTER_ANNOUNCE_IP=192.168.68.92' - 'REdis_CLUSTER_BUS_ANNOUNCE_PORT=17000' - 'REdis_CLUSTER_DYNAMIC_IPS=no' ports: - "7000:7000" - "17000:17000" redis-node-1: image: bitnami/redis-cluster container_name: redis-node-1 restart: always networks: redis: ipv4_address: 172.22.0.101 hostname: redis-node-1 environment: - 'REdis_PORT_NUMBER=7001' - 'REdis_PASSWORD=Lucky2021' - 'REdis_NODES=redis-node-0 redis-node-1 redis-node-2 redis-node-3 redis-node-4 redis-node-5' - 'REdis_CLUSTER_ANNOUNCE_PORT=7001' - 'REdis_CLUSTER_ANNOUNCE_IP=192.168.68.92' - 'REdis_CLUSTER_BUS_ANNOUNCE_PORT=17001' - 'REdis_CLUSTER_DYNAMIC_IPS=no' ports: - "7001:7001" - "17001:17001" redis-node-2: image: bitnami/redis-cluster container_name: redis-node-2 restart: always networks: redis: ipv4_address: 172.22.0.102 hostname: redis-node-2 environment: - 'REdis_PORT_NUMBER=7002' - 'REdis_PASSWORD=Lucky2021' - 'REdis_NODES=redis-node-0 redis-node-1 redis-node-2 redis-node-3 redis-node-4 redis-node-5' - 'REdis_CLUSTER_ANNOUNCE_PORT=7002' - 'REdis_CLUSTER_ANNOUNCE_IP=192.168.68.92' - 'REdis_CLUSTER_BUS_ANNOUNCE_PORT=17002' - 'REdis_CLUSTER_DYNAMIC_IPS=no' ports: - "7002:7002" - "17002:17002" redis-node-3: image: bitnami/redis-cluster container_name: redis-node-3 restart: always networks: redis: ipv4_address: 172.22.0.103 hostname: redis-node-3 environment: - 'REdis_PORT_NUMBER=7003' - 'REdis_PASSWORD=Lucky2021' - 'REdis_NODES=redis-node-0 redis-node-1 redis-node-2 redis-node-3 redis-node-4 redis-node-5' - 'REdis_CLUSTER_ANNOUNCE_PORT=7003' - 'REdis_CLUSTER_ANNOUNCE_IP=192.168.68.92' - 'REdis_CLUSTER_BUS_ANNOUNCE_PORT=17003' - 'REdis_CLUSTER_DYNAMIC_IPS=no' ports: - "7003:7003" - "17003:17003" redis-node-4: image: bitnami/redis-cluster container_name: redis-node-4 restart: always networks: redis: ipv4_address: 172.22.0.104 hostname: redis-node-4 environment: - 'REdis_PORT_NUMBER=7004' - 'REdis_PASSWORD=Lucky2021' - 'REdis_NODES=redis-node-0 redis-node-1 redis-node-2 redis-node-3 redis-node-4 redis-node-5' - 'REdis_CLUSTER_ANNOUNCE_PORT=7004' - 'REdis_CLUSTER_ANNOUNCE_IP=192.168.68.92' - 'REdis_CLUSTER_BUS_ANNOUNCE_PORT=17004' - 'REdis_CLUSTER_DYNAMIC_IPS=no' ports: - "7004:7004" - "17004:17004" redis-node-5: image: bitnami/redis-cluster container_name: redis-node-5 restart: always networks: redis: ipv4_address: 172.22.0.105 hostname: redis-node-5 environment: - 'REdis_PORT_NUMBER=7005' - 'REdis_PASSWORD=Lucky2021' - 'REdis_NODES=redis-node-0 redis-node-1 redis-node-2 redis-node-3 redis-node-4 redis-node-5' - 'REdis_CLUSTER_ANNOUNCE_PORT=7005' - 'REdis_CLUSTER_ANNOUNCE_IP=192.168.68.92' - 'REdis_CLUSTER_BUS_ANNOUNCE_PORT=17005' - 'REdis_CLUSTER_DYNAMIC_IPS=no' ports: - "7005:7005" - "17005:17005" redis-cluster-init: image: redis:6.2 container_name: redis-cluster-init restart: 'no' networks: redis: ipv4_address: 172.22.0.106 depends_on: - redis-node-0 - redis-node-1 - redis-node-2 - redis-node-3 - redis-node-4 - redis-node-5 entrypoint: [] command: - /bin/bash - -c - redis-cli -a Lucky2021 --cluster create 172.22.0.100:7000 172.22.0.101:7001 172.22.0.102:7002 172.22.0.103:7003 172.22.0.104:7004 172.22.0.105:7005 --cluster-replicas 1 --cluster-yes networks: redis: driver: bridge ipam: config: - subnet: 172.22.0.0/16 gateway: 172.22.0.1
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