Docker 中的 Mongo 副本集 - 无法添加用户：不是主用户

Question

我正在尝试设置ReplicaSet，但初始化时遇到问题。

我第一次运行

db_1     | uncaught exception: Error: couldn't add user: not master 

每次之后

db_1     | {"t":{"$date":"2020-09-16T16:06:05.341+00:00"},"s":"I",  "c":"ACCESS",   "id":20249,   "ctx":"conn1","msg":"Authentication failed","attr":{"mechanism":"SCRAM-SHA-256","principalName":"user","authenticationDatabase":"admin","client":"172.18.0.5:37916","result":"UserNotFound: Could not find user "user" for db "admin""}}
db_1     | {"t":{"$date":"2020-09-16T16:06:05.342+00:00"},"s":"I",  "c":"ACCESS",   "id":20249,   "ctx":"conn1","msg":"Authentication failed","attr":{"mechanism":"SCRAM-SHA-1","principalName":"user","authenticationDatabase":"admin","client":"172.18.0.5:37916","result":"UserNotFound: Could not find user "user" for db "admin""}}
db_1     | {"t":{"$date":"2020-09-16T16:06:05.349+00:00"},"s":"I",  "c":"NETWORK",  "id":22944,   "ctx":"conn1","msg":"connection ended","attr":{"remote":"172.18.0.5:37916","connectionCount":0}}
setup_1  | Error: Authentication failed. :
setup_1  | connect@src/mongo/shell/mongo.js:362:17
setup_1  | @(connect):2:6
setup_1  | exception: connect failed
setup_1  | exiting with code 1
docker_setup_1 exited with code 1

我的设置是：

/doker compose.yml

version: "3"
services:
db:
image: db
build: 
context: .
dockerfile: DockerfileDb
environment:
MONGO_INITDB_ROOT_USERNAME: user
MONGO_INITDB_ROOT_PASSWORD: xxxx
ports:
- "34000:34000"
volumes:
- mongodata:/data/db
- ./mongologs:/data/logs
db2:
image: db
ports:
- "34001:34000"
volumes:
- mongodata2:/data/db
db3:
image: db
ports:
- "34002:34000"
volumes:
- mongodata3:/data/db
setup:
image: setup
build: ./replicaSetup
depends_on:
- db
- db2
- db3
links:
- "db:database"
- "db2:database2"
- "db3:database3"
volumes:
mongodata:
mongodata2:
mongodata3:

/DockerfileDb

FROM mongo

WORKDIR /usr/src/config
COPY replicaSetup/mongod.conf .
COPY replicaSetup/shared.key .
EXPOSE 34000
RUN chmod 700 shared.key
RUN chown 999:999 shared.key
CMD ["--config", "./mongod.conf"]

/replicaSetup/mongod.conf

net: 
port: 34000
bindIpAll : true
security:  
authorization: enabled 
keyFile: ./shared.key
replication: 
oplogSizeMB: 1024
replSetName: amsdb

/replicaSetup/Dockerfile

FROM mongo
# Create app directory
WORKDIR /usr/src/configs
# Install app dependencies
COPY replicaSet.js .
COPY setup.sh .
CMD ["./setup.sh"]

/replicaSetup/setup.sh

sleep 10 | echo Sleeping
mongo mongodb://database:34000 -u "user" -p "xxxx" replicaSet.js

/replicaSetup/replicaSet.js

rsconf = {
_id : "amsdb",
members: [
{ _id : 0, host : "database:34000"},
{ _id : 1, host : "database2:34001" },
{ _id : 2, host : "database3:34002" }
]
}
rs.initiate(rsconf);
rs.conf();

谢谢你的帮助！

Answer 1

您只需使用docker compose 中的基本mongo图像就可以做到这一点

你的设置应该看起来像：

/doker compose.yml

version: "3.0"
services:
# Worker 1
mongo1:
image: mongo:latest
volumes:
- ./replicaSetup:/opt/keyfile
- mongodata:/data/db
environment:
MONGO_INITDB_ROOT_USERNAME: user
MONGO_INITDB_ROOT_PASSWORD: xxxx
ports:
- 27017:27017
command: 'mongod --auth --keyFile /opt/keyfile/shared.key --replSet amsdb'
# Worker 2
mongo2:
image: mongo:latest
volumes:
- ./replicaSetup:/opt/keyfile
- mongodata2:/data/db
environment:
MONGO_INITDB_ROOT_USERNAME: user
MONGO_INITDB_ROOT_PASSWORD: xxxx
ports:
- 27018:27017
command: 'mongod --auth --keyFile /opt/keyfile/shared.key --replSet amsdb'
# Worker 3
mongo3:
image: mongo:latest
volumes:
- ./replicaSetup:/opt/keyfile
- mongodata3:/data/db
environment:
MONGO_INITDB_ROOT_USERNAME: user
MONGO_INITDB_ROOT_PASSWORD: xxxx
ports:
- 27019:27017
command: 'mongod --auth --keyFile /opt/keyfile/shared.key --replSet amsdb'
volumes:
mongodata:
mongodata2:
mongodata3:

/replicaSetup/Dockerfile-保持相同的

/replicaSetup/setup.sh-保持相同的

/replicaSetup/replicaSet.js

rsconf = {
_id : "amsdb",
members: [
{ _id : 0, host : "172.17.0.1:27017", priority:1 },
{ _id : 1, host : "172.17.0.1:27018", priority:1 },
{ _id : 2, host : "172.17.0.1:27019", priority:1 }
]
}
rs.initiate(rsconf);
rs.conf();

Answer 2

在编写"mongo：最新的"解析为v4.4.1。答案是针对entrypoint.sh的那个版本https://github.com/docker-library/mongo/blob/master/4.4/docker-entrypoint.sh

为了处理MONGO_INITDB_ROOT_*环境变量并将用户添加到数据库中，数据库应以独立模式启动。当前实现似乎不支持.conf文件中的副本集配置，而仅支持通过命令行参数进行配置。

要么在Dockerfilecommand: "--bind_ip_all --replSet amsdb --port 34000 ... etc"中传递参数，要么为docker-entrypoint.sh创建一个PR以支持docker.conf