Docker-swarm快速搭建redis集群的方法步骤
目录
修改hostname
环境配置
修改hostname
创建目录
创建网络
编写compose.yml模版文件
启动服务
验证测试
集群
集群测试验证
环境配置1.三台虚拟机，VM16
| centos7 | 192.168.2.131 | |
| centos7 | 192.168.2.132 | |
| centos7 | 192.168.2.133 |
2.redis配置
| manager | 192.168.2.131 | 7001 | 17001 | |
| manager | 192.168.2.131 | 7002 | 17002 | |
| worker01 | 192.168.2.132 | 7003 | 17003 | |
| worker01 | 192.168.2.132 | 7004 | 17004 | |
| worker02 | 192.168.2.133 | 7005 | 17005 | |
| worker02 | 192.168.2.133 | 7006 | 17006 |
192.168.2.131
sudo hostnamectl set-hostname manager
重启后永久生效，或者执行 exec bash 使立即生效
192.168.2.132
sudo hostnamectl set-hostname worker01
重启后永久生效，或者执行 exec bash 使立即生效
192.168.2.133
sudo hostnamectl set-hostname worker02
重启后永久生效，或者执行 exec bash 使立即生效
创建目录分别在集群的各服务器（131/132/133）上创建目录：
sudo rm -rf /home/data/redis/ && sudo mkdir -p /home/data/redis/{7001,7002,7003,7004,7005,7006}/{data,conf} && chmod 777 -R /home/data/
创建网络
docker network create --driver overlay mynetwork
这里创建网络类型为overlay，网络类型主要使用比较多的是bridge、overlay ，由于这里使用的是swarm集群部署，要让所有服务在同一个网络中，则需要使用overlay 。
[root@worker2 ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
147f2ede7454 bridge bridge local
e29b8451a401 docker_gwbridge bridge local
4b767db33495 host host local
splhg7ef8xyc ingress overlay swarm
b037f0b632fa mynet bridge local
6zxw8ah74hor mynetwork overlay swarm
b6f757b6cadd none null local
063d396e139c somenetwork bridge local
编写compose.yml模版文件
version: "3.8"
services:
redis7001:
image: redis:alpine
container_name: redis7001
#设置主机名
hostname: redis7001
restart: always
#privileged: true
#挂载目录,相当于 docker run -v 主机目录:容器目录
volumes:
- /home/data/redis/7001/data:/data
- /home/data/redis/7001/conf:/conf
#启动容器执行命令，相当于docker run [镜像:tag] [命令], 登录redis: redis-cli -h 192.168.0.80 -p 6379 -a Dszn@2020
command: redis-server --appendonly yes --cluster-enabled yes --cluster-config-file /conf/nodes.conf --cluster-announce-ip 192.168.2.131 --cluster-announce-port 7001 --cluster-announce-bus-port 17001
ports:
- "7001:6379"
- "17001:16379"
#指定环境变量，相当于docker run -e 参数, 登录mysql: mysql -h192.168.3.80 -P3306 -uroot -pDs20Pwd@
environment:
- TZ=Asia/Shanghai
networks:
- mynetwork
deploy:
placement:
constraints:
- node.hostname == manager
- node.role == manager
redis7002:
image: redis:alpine
container_name: redis7002
#设置主机名
hostname: redis7002
restart: always
#privileged: true
#挂载目录,相当于 docker run -v 主机目录:容器目录
volumes:
- /home/data/redis/7002/data:/data
- /home/data/redis/7002/conf:/conf
#启动容器执行命令，相当于docker run [镜像:tag] [命令], 登录redis: redis-cli -h 192.168.0.80 -p 6379 -a Dszn@2020
command: redis-server --appendonly yes --cluster-enabled yes --cluster-config-file /conf/nodes.conf --cluster-announce-ip 192.168.2.131 --cluster-announce-port 7002 --cluster-announce-bus-port 17002
ports:
- "7002:6379"
- "17002:16379"
#指定环境变量，相当于docker run -e 参数, 登录mysql: mysql -h192.168.3.80 -P3306 -uroot -pDs20Pwd@
environment:
- TZ=Asia/Shanghai
networks:
- mynetwork
deploy:
placement:
constraints:
- node.hostname == manager
- node.role == manager
redis7003:
image: redis:alpine
container_name: redis7003
#设置主机名
hostname: redis7003
restart: always
volumes:
- /home/data/redis/7003/data:/data
- /home/data/redis/7003/conf:/conf
command: redis-server --appendonly yes --cluster-enabled yes --cluster-config-file /conf/nodes.conf --cluster-announce-ip 192.168.2.132 --cluster-announce-port 7003 --cluster-announce-bus-port 17003
ports:
- "7003:6379"
- "17003:16379"
environment:
- TZ=Asia/Shanghai
networks:
- mynetwork
deploy:
placement:
constraints:
- node.hostname == worker1
redis7004:
image: redis:alpine
container_name: redis7004
#设置主机名
hostname: redis7004
restart: always
volumes:
- /home/data/redis/7004/data:/data
- /home/data/redis/7004/conf:/conf
command: redis-server --appendonly yes --cluster-enabled yes --cluster-config-file /conf/nodes.conf --cluster-announce-ip 192.168.2.132 --cluster-announce-port 7004 --cluster-announce-bus-port 17004
ports:
- "7004:6379"
- "17004:16379"
environment:
- TZ=Asia/Shanghai
networks:
- mynetwork
deploy:
placement:
constraints:
- node.hostname == worker1
redis7005:
image: redis:alpine
container_name: redis7005
#设置主机名
hostname: redis7005
restart: always
volumes:
- /home/data/redis/7005/data:/data
- /home/data/redis/7005/conf:/conf
command: redis-server --appendonly yes --cluster-enabled yes --cluster-config-file /conf/nodes.conf --cluster-announce-ip 192.168.2.132 --cluster-announce-port 7005 --cluster-announce-bus-port 17005
ports:
- "7005:6379"
- "17005:16379"
environment:
- TZ=Asia/Shanghai
networks:
- mynetwork
deploy:
placement:
constraints:
- node.hostname == worker2
redis7006:
image: redis:alpine
container_name: redis7006
#设置主机名
hostname: redis7006
restart: always
volumes:
- /home/data/redis/7006/data:/data
- /home/data/redis/7006/conf:/conf
command: redis-server --appendonly yes --cluster-enabled yes --cluster-config-file /conf/nodes.conf --cluster-announce-ip 192.168.2.133 --cluster-announce-port 7006 --cluster-announce-bus-port 17006
ports:
- "7006:6379"
- "17006:16379"
environment:
- TZ=Asia/Shanghai
networks:
- mynetwork
deploy:
placement:
constraints:
- node.hostname == worker2
#声明网桥
networks:
#定义服务网桥名称
mynetwork:
#指定网桥驱动，有bridge/overlay,默认是bridge
driver: overlay
#false-统自动创建网桥名,格式为: 目录名_网桥名，默认为false; true-使用外部创建的网桥，需要自己手动创建
external: true
#挂载目录，声明服务使用的创建卷名
volumes:
mysqldata:
#false-系统自动创建的卷名,格式为: 目录名_卷名，默认为false; true-使用外部创建的卷面，需要自己手动创建
external: false
配置说明：
这里使用了6个节点，3主3从，分别在manager/worker1/worker2上创建2个副本。
注意：挂载目录，如果不使用宿主机挂载目录，可以使用卷的方式挂载，卷挂载会自动创建，可以不用提前手动创建。
sudo docker stack deploy -c redis-stack.yml redis
1.启动服务
[root@manager redis]# sudo docker stack deploy -c redis-stack.yml redis
Ignoring unsupported options: restart
Ignoring deprecated options:
container_name: Setting the container name is not supported.
Creating service redis_redis7001
Creating service redis_redis7002
Creating service redis_redis7003
Creating service redis_redis7004
Creating service redis_redis7005
Creating service redis_redis7006
2.查看启动节点
[root@manager redis]# sudo docker stack ls
NAME SERVICES ORCHESTRATOR
redis 6 Swarm
3.查看启动的堆栈
[root@worker2 redis_cluster]# docker stack ps redis
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
bdofotp2fx91 redis_redis7001.1 redis:alpine manager Running Running 2 minutes ago
81kmx5o61zn0 redis_redis7002.1 redis:alpine manager Running Running about a minute ago
wku68rakslzj redis_redis7003.1 redis:alpine worker1 Running Running 49 seconds ago
oo7obcm33guk redis_redis7004.1 redis:alpine worker1 Running Running about a minute ago
xrt14qitd7ar redis_redis7005.1 redis:alpine worker2 Running Running about a minute ago
jc1xxv66fskg redis_redis7006.1 redis:alpine worker2 Running Running 2 minutes ago
[root@worker2 redis_cluster]#
验证测试
本地连接成功
进入manager（192.168.2.131）服务设置集群
1.登录manager节点，执行如下命令集群：
[root@manager ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
71092cdaaf55 redis:alpine "docker-entrypoint.s…" 2 minutes ago Up About a minute 6379/tcp redis_redis7001.1.j84ta2mmwttpl2lp6eoyksz71
695c0fc4545b redis:alpine "docker-entrypoint.s…" 2 minutes ago Up About a minute 6379/tcp redis_redis7002.1.8jt2yodv9ju8k4saumd7n5rif
[root@manager ~]# docker exec -it 710 /bin/sh
/data # redis-cli -h 192.168.2.131 -p 7001 --cluster create 192.168.2.131:7001 192.168.2.131:7002 192.168.2.132:7003 192.168.2.132:7004 192.168.2.133:7005 192.168.2
.133:7006 --cluster-replicas 1 --cluster-yes
2.查看集群
可以看到集群后，redis有3主3从，分别在manager、worker1、worker2节点上创建了2个服务。
[root@manager ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
71092cdaaf55 redis:alpine "docker-entrypoint.s…" 28 minutes ago Up 28 minutes 6379/tcp redis_redis7001.1.j84ta2mmwttpl2lp6eoyksz71
695c0fc4545b redis:alpine "docker-entrypoint.s…" 28 minutes ago Up 28 minutes 6379/tcp redis_redis7002.1.8jt2yodv9ju8k4saumd7n5rif
[root@manager ~]# docker exec -it 710 /bin/sh
/data # redis-cli -c
127.0.0.1:6379> cluster nodes
01011fe3d1e19db0bfab5d736f7fcb85f84e5a2b 192.168.2.131:7002@17002 slave 9fece13f2f1ff237b0e450cb5485c27cd4cc1522 0 1648894677000 5 connected
9a68f8ad7688f3c7f3a5474d64ffc5adc7448288 192.168.2.132:7004@17004 slave c1a9795720eb270d6bc77632236d30bfb1fe9728 0 1648894678000 1 connected
c1a9795720eb270d6bc77632236d30bfb1fe9728 192.168.2.131:7001@17001 myself,master - 0 1648894677000 1 connected 0-5460
9fece13f2f1ff237b0e450cb5485c27cd4cc1522 192.168.2.132:7005@17005 master - 0 1648894679923 5 connected 10923-16383
4b6cafd544d4353249eb7f7d58bed7bf0b1caeb1 192.168.2.132:7003@17003 slave 65c23a5ae11b985b270a5e34d7526648a3c826b8 0 1648894679000 7 connected
65c23a5ae11b985b270a5e34d7526648a3c826b8 192.168.2.133:7006@17006 master - 0 1648894678000 7 connected 5461-10922
127.0.0.1:6379>
集群测试验证
1.Manager节点192.168.2.131:7001@17001 myself,master 登录redis:
redis-cli -c set username ‘zxq’ get username
[root@manager ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
71092cdaaf55 redis:alpine "docker-entrypoint.s…" 4 minutes ago Up 4 minutes 6379/tcp redis_redis7001.1.j84ta2mmwttpl2lp6eoyksz71
695c0fc4545b redis:alpine "docker-entrypoint.s…" 4 minutes ago Up 4 minutes 6379/tcp redis_redis7002.1.8jt2yodv9ju8k4saumd7n5rif
[root@manager ~]# docker exec -it 710 /bin/sh
/data # redis-cli -c
127.0.0.1:6379> set username "zxq"
-> Redirected to slot [14315] located at 192.168.2.132:7005
OK
2.Worker1节点192.168.2.132:7003@17003 master 登录redis:
[root@worker1 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
73da00eeb366 redis:alpine "docker-entrypoint.s…" 24 minutes ago Up 23 minutes 6379/tcp redis_redis7004.1.mofccxkrtzb0erc36fwaj9l3b
8e4fed3c8855 redis:alpine "docker-entrypoint.s…" 24 minutes ago Up 23 minutes 6379/tcp redis_redis7003.1.5qmpefwnglv6jvd62206owq3h
[root@worker1 ~]# docker exec -it 73d /bin/sh
/data # redis-cli -c
127.0.0.1:6379> get username
-> Redirected to slot [14315] located at 192.168.2.132:7005
"zxq"
192.168.2.132:7005> set nodes5 "7005"
OK
3.Worker1节点192.168.2.132:7004@17004 slave登录redis:
[root@worker1 ~]# docker exec -it 8e4 /bin/sh
/data # redis-cli -c
127.0.0.1:6379> get nodes5
-> Redirected to slot [15322] located at 192.168.2.132:7005
"7005"
192.168.2.132:7005>
4.Worker2节点192.168.2.133:7006@17006 slave 登录redis:
[root@worker2 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
7505c9fde687 redis:alpine "docker-entrypoint.s…" 47 minutes ago Up 47 minutes 6379/tcp redis_redis7006.1.o6yly8n6h352g034jhx7nbvaf
2da9dc998c69 redis:alpine "docker-entrypoint.s…" 47 minutes ago Up 47 minutes 6379/tcp redis_redis7005.1.s6lfflko40afutyz9a5b77tib
[root@worker2 ~]# docker exec -it 750 /bin/sh
/data # redis-cli -c
127.0.0.1:6379> get username
-> Redirected to slot [14315] located at 192.168.2.132:7005
"zxq"
192.168.2.132:7005> get name
-> Redirected to slot [5798] located at 192.168.2.133:7006
"zxq"
192.168.2.133:7006> get nodes5
-> Redirected to slot [15322] located at 192.168.2.132:7005
"7005"
192.168.2.132:7005>
redis集群完成
参考原文章地址：
docker swarm redis集群_starsky20的博客-CSDN博客_docker swarm搭建redis集群
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