发表更新docker10 分钟读完 (大约1508个字)

docker-compose redis cluster host

docker compose 集群 network: host

prepare

集群搭建

编写redis.conf

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cluster-enabled yes 
cluster-config-file nodes.conf 
cluster-node-timeout 5000 
appendonly yes
port 6379

在/root/redis-cluster目录下创建redis-1,redis2,redis-3,redis-4,redis-5,redis-6文件夹

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mkdir -p /root/apps/redis-cluster
#然后将上一步的 redis.conf 放到 ~/docker/redis/r1 目录下
cd /root/apps/redis-cluster
mkdir redis-1
cd redis-1
mkdir data
vim redis.conf

#然后复制6个 redis-1 文件夹
cd /root/apps/redis-cluster
cp -r redis-1 redis-2
cp -r redis-1 redis-3
cp -r redis-1 redis-4
cp -r redis-1 redis-5
cp -r redis-1 redis-6
  • 目录结构
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    ├── docker-compose.yaml
    ├── redis-1
    │   ├── data
    │   │   └── nodes.conf
    │   └── redis.conf
    ├── redis-2
    │   ├── data
    │   │   └── nodes.conf
    │   └── redis.conf
    ├── redis-3
    │   ├── data
    │   │   └── nodes.conf
    │   └── redis.conf
    ├── redis-4
    │   ├── data
    │   │   └── nodes.conf
    │   └── redis.conf
    ├── redis-5
    │   ├── data
    │   │   └── nodes.conf
    │   └── redis.conf
    └── redis-6
        ├── data
        │   └── nodes.conf
        └── redis.conf

    在每个redis-*文件夹下创建redis.conf文件，并写入如下内容

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    echo 'cluster-enabled yes 
    cluster-config-file nodes.conf 
    cluster-node-timeout 5000 
    appendonly yes
    port 6379 ' > /root/apps/redis-cluster/redis-1/redis.conf

    echo 'cluster-enabled yes 
    cluster-config-file nodes.conf 
    cluster-node-timeout 5000 
    appendonly yes
    port 6380 ' > /root/apps/redis-cluster/redis-2/redis.conf

    echo 'cluster-enabled yes 
    cluster-config-file nodes.conf 
    cluster-node-timeout 5000 
    appendonly yes
    port 6381 ' > /root/apps/redis-cluster/redis-3/redis.conf

    echo 'cluster-enabled yes 
    cluster-config-file nodes.conf 
    cluster-node-timeout 5000 
    appendonly yes
    port 6382 ' > /root/apps/redis-cluster/redis-4/redis.conf

    echo 'cluster-enabled yes 
    cluster-config-file nodes.conf 
    cluster-node-timeout 5000 
    appendonly yes
    port 6383 ' > /root/apps/redis-cluster/redis-5/redis.conf

    echo 'cluster-enabled yes 
    cluster-config-file nodes.conf 
    cluster-node-timeout 5000 
    appendonly yes
    port 6384 ' > /root/apps/redis-cluster/redis-6/redis.conf

    编写docker-compose.yml文件

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    version: '3.1'
    services:
      # redis1配置
      redis1:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis-1
        restart: always
        network_mode: "host"
        volumes:
          - ./redis-1/redis.conf:/usr/local/etc/redis/redis.conf
          - ./redis-1/data:/data
        command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
      # redis2配置
      redis2:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis-2
        restart: always
        network_mode: "host"
        volumes:
          - ./redis-2/redis.conf:/usr/local/etc/redis/redis.conf
          - ./redis-2/data:/data
        command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
      # redis3配置
      redis3:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis-3
        restart: always
        network_mode: "host"
        volumes:
          - ./redis-3/redis.conf:/usr/local/etc/redis/redis.conf
          - ./redis-3/data:/data
        command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
      # redis4配置
      redis4:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis-4
        restart: always
        network_mode: "host"
        volumes:
          - ./redis-4/redis.conf:/usr/local/etc/redis/redis.conf
          - ./redis-4/data:/data
        command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
      # redis5配置
      redis5:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis-5
        restart: always
        network_mode: "host"
        volumes:
          - ./redis-5/redis.conf:/usr/local/etc/redis/redis.conf
          - ./redis-5/data:/data
        command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
      # redis6配置
      redis6:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis-6
        restart: always
        network_mode: "host"
        volumes:
          - ./redis-6/redis.conf:/usr/local/etc/redis/redis.conf
          - ./redis-6/data:/data
        command: ["redis-server", "/usr/local/etc/redis/redis.conf"]

启动容器

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systemctl start docker

docker-compose up -d

查看容器启动状态

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docker ps

开启集群

随便找一个容器进入，这里我选择redis-1进入。

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docker exec -it redis-1 bash

在进入容器后，输入如下命令开启集群

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redis-cli --cluster create 192.168.171.136:6379 \
192.168.171.136:6380 \
192.168.171.136:6381 \
192.168.171.136:6382 \
192.168.171.136:6383 \
192.168.171.136:6384 \
--cluster-replicas 1



# 集群信息查看
redis-cli --cluster info 192.168.171.136:6379

# Connect redis cluster nodes with – C parameter
 redis-cli –c -h 172.17.0.1 –p 6391


redis-cli -h redis-1

cluster nodes

redis-cli –cluster cmd

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# 1 创建集群主节点
redis-cli --cluster create 192.168.163.132:6379 192.168.163.132:6380 192.168.163.132:6381

# 2 创建集群主从节点

redis-cli --cluster create 192.168.163.132:6379 192.168.163.132:6380 192.168.163.132:6381 192.168.163.132:6382 192.168.163.132:6383 192.168.163.132:6384 --cluster-replicas 1
redis-cli --cluster create 172.21.0.2:6379 172.21.0.3:6379 172.21.0.4:6379 --cluster-replicas 2
# 说明：--cluster-replicas 参数为数字，1表示每个主节点需要1个从节点。

# 通过该方式创建的带有从节点的机器不能够自己手动指定主节点，所以如果需要指定的话，需要自己手动指定，先使用①或③创建好主节点后，再通过④来处理。

# 3 添加集群主节点

redis-cli --cluster add-node 192.168.163.132:6382 192.168.163.132:6379 
#说明：为一个指定集群添加节点，需要先连到该集群的任意一个节点IP（192.168.163.132:6379），再把新节点加入。该2个参数的顺序有要求：新加入的节点放前


# 4  添加集群从节点

redis-cli --cluster add-node 192.168.163.132:6382 192.168.163.132:6379 --cluster-slave --cluster-master-id 117457eab5071954faab5e81c3170600d5192270
#说明：把6382节点加入到6379节点的集群中，并且当做node_id为 117457eab5071954faab5e81c3170600d5192270 的从节点。如果不指定 --cluster-master-id 会随机分配到任意一个主节点。

# 说明：把6380节点加入到6379节点的集群中，并且当做node_id为 551c30a7093bcb8dc8068cd30cf6e81d9b8b47c7 的从节点。如果不指定 --cluster-master-id 会随机分配到任意一个主节点。
redis-cli --cluster add-node 192.168.171.136:6380 192.168.171.136:6379 --cluster-slave --cluster-master-id 551c30a7093bcb8dc8068cd30cf6e81d9b8b47c7
redis-cli --cluster add-node 192.168.171.136:6381 192.168.171.136:6379 --cluster-slave --cluster-master-id 551c30a7093bcb8dc8068cd30cf6e81d9b8b47c7

redis-cli --cluster add-node 172.21.0.3:6379 172.21.0.2:6379 --cluster-slave --cluster-master-id 551c30a7093bcb8dc8068cd30cf6e81d9b8b47c7
#说明：把 172.21.0.3:6379 节点加入到 172.21.0.2:6379 节点的集群中，并且当做node_id为 117457eab5071954faab5e81c3170600d5192270 的从节点。如果不指定 --cluster-master-id 会随机分配到任意一个主节点。

redis-cli -h redis-master


# 5  删除节点
redis-cli --cluster del-node 192.168.163.132:6384 f6a6957421b80409106cb36be3c7ba41f3b603ff
# 说明：指定IP、端口和node_id 来删除一个节点，从节点可以直接删除，有slot分配的主节点不能直接删除。删除之后，该节点会被shutdown。


# 检查集群
redis-cli --cluster check 192.168.171.136:6371 --cluster-search-multiple-owners
# 修复集群
redis-cli --cluster fix 192.168.171.136:6371  --cluster-search-multiple-owners
# 说明：检查key、slots、从节点个数的分配情况


# 集群信息查看
redis-cli --cluster info 192.168.171.136:6379 

# 说明：把6380节点加入到6379节点的集群中，并且当做node_id为 551c30a7093bcb8dc8068cd30cf6e81d9b8b47c7 的从节点。如果不指定 --cluster-master-id 会随机分配到任意一个主节点。
redis-cli --cluster add-node 192.168.171.136:6380 192.168.171.136:6379 --cluster-slave --cluster-master-id 551c30a7093bcb8dc8068cd30cf6e81d9b8b47c7
redis-cli --cluster add-node 192.168.171.136:6381 192.168.171.136:6379 --cluster-slave --cluster-master-id 551c30a7093bcb8dc8068cd30cf6e81d9b8b47c7

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