docker部署zookeeper集群(单主机、多主机)
docker跨主机部署zookeeper集群1、一台主机上部署zookeeper集群2、一台主机部署zookeeper集群分析3、Macvlan网络4、跨主机环境准备:5、创建macvlan网络6、docker-compose.yml文件参考1、一台主机上部署zookeeper集群下面这个是官方给出的docker-compose的部署方案(这个是都在一台主机上部署的):version: '3'se
docker跨主机部署zookeeper集群
1、一台主机上部署zookeeper集群
下面这个是官方给出的docker-compose的部署方案(这个是都在一台主机上部署的):
version: '3'
services:
zoo1:
image: zookeeper
restart: always
ports:
- 2182:2181
environment:
ZOO_MY_ID: 1
ZOO_SERVERS: server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181
zoo2:
image: zookeeper
restart: always
ports:
- 2183:2181
environment:
ZOO_MY_ID: 2
ZOO_SERVERS: server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181
zoo3:
image: zookeeper
restart: always
ports:
- 2184:2181
environment:
ZOO_MY_ID: 3
ZOO_SERVERS: server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181
2、一台主机部署zookeeper集群分析
我们从上面的分析,最主要的就是ZOO_MY_ID和ZOO_SERVERS(更多环境变量配置参考:https://hub.docker.com/_/zookeeper)
- ZOO_MY_ID:节点ID
- ZOO_SERVERS:集群节点地址,多个节点之间使用空格隔开
由此可以看出如果不在一个主机上,那么这几个容器之间就得是想通的,为了使其想通,我们运用了Macvlan网络
3、Macvlan网络
macvlan本身是linxu kernel的模块,本质上是一种网卡虚拟化技术。其功能是允许在同一个物理网卡上虚拟出多个网卡,通过不同的MAC地址在数据链路层进行网络数据的转发,一块网卡上配置多个 MAC 地址(即多个 interface),每个interface可以配置自己的IP,Docker的macvlan网络实际上就是使用了Linux提供的macvlan驱动.在物理网络看来,每张虚拟网卡都是一个单独的接口。
4、跨主机环境准备:
编号 | 主机IP | 容器IP |
---|---|---|
主机1 | 192.168.1.187 | 10.0.3.71 |
主机2 | 192.168.1.188 | 10.0.3.72 |
主机3 | 192.168.1.189 | 10.0.3.73 |
5、创建macvlan网络
主机1(主机2和主机3也做如下类似操作):
docker network create -d macvlan --subnet=10.0.3.0/24 --gateway=10.0.3.1 -o parent=em2 zookeeper-kafka-net
subnet这里结尾最好是/24,代表255.255.255.0,如果是/16代表255.255.0.0,16这种据说在设置了iptable的情况下会出问题
parent后是网卡名称192.168.1.187的网卡名称,可通过ipconfig查找
最后的zookeeper-kafka-net是你创建的macvlan网络名称,可随意写
6、docker-compose.yml文件
主机1:
version: "3"
services:
zookeeper1:
container_name: zookeeper1
image: zookeeper:3.6.2
networks:
zookeeper-kafka-net:
ipv4_address: 10.0.3.71
ports:
- "22181:2181"
- "22888:2888"
- "23888:3888"
environment:
ZOO_MY_ID: 1
ZOO_SERVERS: server.1=10.0.3.71:2888:3888;2181 server.2=10.0.3.72:2888:3888;2181 server.3=10.0.3.73:2888:3888;2181
restart: always
networks:
zookeeper-kafka-net:
external:
name: zookeeper-kafka-net
主机2:
version: "3"
services:
zookeeper2:
container_name: zookeeper2
image: zookeeper:3.6.2
networks:
zookeeper-kafka-net:
ipv4_address: 10.0.3.72
ports:
- "22181:2181"
- "22888:2888"
- "23888:3888"
environment:
ZOO_MY_ID: 2
ZOO_SERVERS: server.1=10.0.3.71:2888:3888;2181 server.2=10.0.3.72:2888:3888;2181 server.3=10.0.3.73:2888:3888;2181
restart: always
networks:
zookeeper-kafka-net:
external:
name: zookeeper-kafka-net
主机3:
version: "3"
services:
zookeeper3:
container_name: zookeeper3
image: zookeeper:3.6.2
networks:
zookeeper-kafka-net:
ipv4_address: 10.0.3.73
ports:
- "22181:2181"
- "22888:2888"
- "23888:3888"
environment:
ZOO_MY_ID: 3
ZOO_SERVERS: server.1=10.0.3.71:2888:3888;2181 server.2=10.0.3.72:2888:3888;2181 server.3=10.0.3.73:2888:3888;2181
restart: always
networks:
zookeeper-kafka-net:
external:
name: zookeeper-kafka-net
参考
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