3主3從
由於只用於測試,故我這裡只用1台伺服器進行模擬
redis列表
在server上建立一個目錄用於存放redis叢集部署檔案。這裡我放的路徑為/root/redis-cluster
在/opt/docker/redis-cluster目錄下建立redis-1,redis-2,redis-3,redis-4,redis-5, redis-6資料夾
mkdir -p /opt/docker/redis-cluster/{redis-1,redis-2,redis-3,redis-4,redis-5,redis-6} #创建持久化目录 mkdir -p /opt/docker/redis-cluster/redis-1/data mkdir -p /opt/docker/redis-cluster/redis-2/data mkdir -p /opt/docker/redis-cluster/redis-3/data mkdir -p /opt/docker/redis-cluster/redis-4/data mkdir -p /opt/docker/redis-cluster/redis-5/data mkdir -p /opt/docker/redis-cluster/redis-6/data
cluster-enabled yes # 开启集群 cluster-config-file nodes.conf # 集群配置文件 cluster-node-timeout 5000 # 集群节点多少时间未响应视为该节点丢失 appendonly yes port 6379 # redis监听端口 masterauth passwd123 #设置master节点密码 requirepass passwd123 #设置密码
注意:port值不能都為6379 ,根據上面redis列表設定的連接埠號,依序為redis-1 ~ redis-6設定6379~6384埠號
這裡直接使用daocloud提供的redis映像位址daocloud.io/library/redis:6.0.4
#在/root/redis-cluster資料夾下建立docker-compose.yml檔案。
docker-compose.yml檔案內容如下:
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: - /opt/docker/redis-cluster/redis-1/data:/data - /opt/docker/redis-cluster/redis-1/redis.conf:/usr/local/etc/redis/redis.conf 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: - /opt/docker/redis-cluster/redis-2/data:/data - /opt/docker/redis-cluster/redis-2/redis.conf:/usr/local/etc/redis/redis.conf 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: - /opt/docker/redis-cluster/redis-3/data:/data - /opt/docker/redis-cluster/redis-3/redis.conf:/usr/local/etc/redis/redis.conf 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: - /opt/docker/redis-cluster/redis-4/data:/data - /opt/docker/redis-cluster/redis-4/redis.conf:/usr/local/etc/redis/redis.conf 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: - /opt/docker/redis-cluster/redis-5/data:/data - /opt/docker/redis-cluster/redis-5/redis.conf:/usr/local/etc/redis/redis.conf 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: - /opt/docker/redis-cluster/redis-6/data:/data - /opt/docker/redis-cluster/redis-6/redis.conf:/usr/local/etc/redis/redis.conf command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
啟動容器,執行指令:
#启动容器 docker-compose -f xxx.yaml up -d
隨便找一個容器進入,這裡我選擇redis-1進入。進入容器後,輸入如下指令開啟叢集:
redis-cli --cluster create 192.168.66.180:6379 \ 192.168.66.180:6380 \ 192.168.66.180:6381 \ 192.168.66.180:6382 \ 192.168.66.180:6383 \ 192.168.66.180:6384 \ --cluster-replicas 1
出現下圖即為成功。
使用redis-cli指令,連接叢集中任意節點。我隨便在一台能夠ping通集群所在IP的電腦上進行了測試,這裡我使用了本機
redis-cli -c -h 192.168.66.180 -p 6379 192.168.66.180:6379> cluster info
顯示為如下圖,即為集群健康狀態
cluster nodes
#注意看圖中的slave,master,myself等關鍵字。
192.168.66.180:6379> set test 'hello world' -> Redirected to slot [6918] located at 192.168.66.180:6380 OK 192.168.66.180:6380>
#注意:這裡根據切片自動切換到了該資料分片所在的節點上,所以下面可以看到連接的節點變成192.168.1.4:6380
get test
168.66.180:6379> set test 'hello world' -> Redirected to slot [6918] located at 192.168.66.180:6380 OK 192.168.66.180:6380> get test "hello world" 192.168.66.180:6380>
這裡因為就是在該資料所在分片上進行的查詢,所以連接節點沒有改變。
#为redis.conf文件添加如下配置。这里设置密码为123456 masterauth 123456 requirepass 123456
#为docker-compose.yml中每个容器添加如下配置: environment: - REDISCLI_AUTH=123456
redis-cli -c -h 192.168.66.180 -p 6379 -a 123456
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