I have created two with replica set name in file deployed as . 部署文件中创建了两个副本集名称为 。
version: "3.3"
services:
cfg1-r1:
image: mongo:3.2
deploy:
placement:
constraints: [node.hostname == ram-ThinkPad-E470]
restart_policy:
condition: on-failure
volumes:
- /opt/mongoshard/tmp:/var/lib/mongodb
- /opt/mongoshard/mongod.conf:/etc/mongod.conf
networks:
- mongoshard
command: ["mongod", "--configsvr", "--replSet", "rs0", "--dbpath", "/var/lib/mongodb", "--port", "27017"]
cfg2-r1:
image: mongo:3.2
deploy:
placement:
constraints: [node.hostname == prasanna-ThinkPad-E470]
restart_policy:
condition: on-failure
volumes:
- /opt/mongoshard/tmp:/var/lib/mongodb
- /opt/mongoshard/mongod.conf:/etc/mongod.conf
networks:
- mongoshard
command: ["mongod", "--configsvr", "--replSet", "rs0", "--dbpath", "/var/lib/mongodb", "--port", "27017"]
networks:
mongoshard:
Content in file 文件中的内容
storage:
dbPath: /var/lib/mongodb
journal:
enabled: true
systemLog:
destination: file
logAppend: true
path: /var/log/mongodb/mongod.log
net:
port: 27017
When I try to initiate using service name as
I Forgot to mention cfg2-r1 while initializing. 我在初始化时忘记提及cfg2-r1。 Now I added it.
It's giving error
MongoDB shell version v3.4.9
connecting to: mongodb://127.0.0.1:27017
MongoDB server version: 3.4.9
{
"ok" : 0,
"errmsg" : "No host described in new configuration 1 for replica set rs0 maps to this node",
"code" : 93,
"codeName" : "InvalidReplicaSetConfig"
}
I think the problem is cfg1-r1 and cfg2-r2 services are not in same network. 我认为问题是cfg1-r1和cfg2-r2服务不在同一网络中。 When I deploy stack file, a network called mongo_mongoshard(overlay) is created and when I inspect it, it is showing only cfg1-r1 as containers in it's container list.
Add the driver: overlay
to the mongoshard:
network in docker-compose.yml file:
networks:
mongoshard:
driver: overlay
Your network has to be on overlay mode, to allow private network sharing between multiple hosts :
docker network create --driver overlay --attachable mongoshard
Then in your compose :
networks:
mongoshard:
external: true
In order for replica works, you need to add at least two members :
rs.initiate({ _id: "rs0", members: [{ _id: 1, host: "cfg1-r1:27017" }, { _id: 2, host: "cfg1-r2:27017" }], settings: { getLastErrorDefaults: { w: "majority", wtimeout: 30000 }}});
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