Docker网络之部署redis集群方式
更新时间:2025年01月02日 14:43:37 作者:后会无期77
文章介绍了如何部署和测试Redis集群,包括创建配置文件、启动容器、查看集群信息以及模拟节点故障进行测试
部署redis集群
1.创建网卡
[root@ls-bPtysZTW ~]# docker network create redis --subnet 172.38.0.0/16 75919ea55f07a816244610bd3c1aac298716dbf4d0be80b0b686b600c8165e77
通过脚本构建6个redis配置
for port in $(seq 1 6); \ do \ mkdir -p /mydata/redis/node-${port}/conf touch /mydata/redis/node-${port}/conf/redis.conf cat << EOF >/mydata/redis/node-${port}/conf/redis.conf port 6379 bind 0.0.0.0 cluster-enabled yes cluster-config-file nodes.conf cluster-node-timeout 5000 cluster-announce-ip 172.38.0.1${port} cluster-announce-port 6379 cluster-announce-bus-port 16379 appendonly yes EOF done
2.依次启动6个redis容器
docker run -p 6371:6379 -p 16371:16379 --name redis-1 \ -v /mydata/redis/node-1/data:/data \ -v /mydata/redis/node-1/conf/redis.conf:/etc/redis/redis.conf \ -d --net redis --ip 172.38.0.11 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf docker run -p 6372:6379 -p 16372:16379 --name redis-2 \ -v /mydata/redis/node-2/data:/data \ -v /mydata/redis/node-2/conf/redis.conf:/etc/redis/redis.conf \ -d --net redis --ip 172.38.0.12 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf docker run -p 6373:6379 -p 16373:16379 --name redis-3 \ -v /mydata/redis/node-3/data:/data \ -v /mydata/redis/node-3/conf/redis.conf:/etc/redis/redis.conf \ -d --net redis --ip 172.38.0.13 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf docker run -p 6374:6379 -p 16374:16379 --name redis-4 \ -v /mydata/redis/node-4/data:/data \ -v /mydata/redis/node-4/conf/redis.conf:/etc/redis/redis.conf \ -d --net redis --ip 172.38.0.14 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf docker run -p 6375:6379 -p 16375:16379 --name redis-5 \ -v /mydata/redis/node-5/data:/data \ -v /mydata/redis/node-5/conf/redis.conf:/etc/redis/redis.conf \ -d --net redis --ip 172.38.0.15 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf docker run -p 6376:6379 -p 16376:16379 --name redis-6 \ -v /mydata/redis/node-6/data:/data \ -v /mydata/redis/node-6/conf/redis.conf:/etc/redis/redis.conf \ -d --net redis --ip 172.38.0.16 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf
3.进入到任意一个容器里
#进入一个redis docker exec -it redis-1 /bin/sh #redis是shell命令,没有bash命令 #创建集群(创建时提示是否设置上面的配置,直接输入yes即可) redis-cli --cluster create 172.38.0.11:6379 172.38.0.12:6379 172.38.0.13:6379 172.38.0.14 :6379 172.38.0.15:6379 172.38.0.16:6379 --cluster-replicas 1
4. 查看集群信息
redis-cli -c #连接集群 cluster info #查看集群信息 cluster nodes #查看集群节点
集群测试
测试
#向集群里写入数据 127.0.0.1:6379> set abc test # 数据写进了节点2 -> Redirected to slot [7638] located at 172.38.0.12:6379 OK 172.38.0.12:6379> get abc "test"
模拟节点故障
此时我们模拟故障,停掉一个节点(刚刚写入数据的节点)
[root@ls-bPtysZTW ~]# docker stop redis-2 redis-2
#我们再次访问数据 172.38.0.12:6379> get abc ^[^H^C /data # redis-cli -c 127.0.0.1:6379> get abc -> Redirected to slot [7638] located at 172.38.0.16:6379 "test" #查看节点信息 172.38.0.16:6379> cluster nodes d34a69ce4bce097b36c1620f31fbeaa90fe65a76 172.38.0.14:6379@16379 slave 2a76fc512720e761ccdbf36cbd44be0d7af3c928 0 1647851135371 4 connected 727214221642d8b2f226cd9cd1ea52b6e7a1a31f 172.38.0.11:6379@16379 master - 0 1647851135069 1 connected 0-5460 c058281886151ea80c7f9b27d71165f930878117 172.38.0.16:6379@16379 myself,master - 0 1647851135000 7 connected 5461-10922 #从节点成master节点 0defb3ab247cc004143f6cf191742577febe8ab6 172.38.0.12:6379@16379 master,fail - 1647850593353 1647850591849 2 connected #节点2已经故障 2a76fc512720e761ccdbf36cbd44be0d7af3c928 172.38.0.13:6379@16379 master - 0 1647851135000 3 connected 10923-16383 5c9b5b2213935195af3b4fa482aa54ea4e4d2323 172.38.0.15:6379@16379 slave 727214221642d8b2f226cd9cd1ea52b6e7a1a31f 0 1647851136374 5 connected
总结
以上为个人经验,希望能给大家一个参考,也希望大家多多支持脚本之家。
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