新配置1中没有描述副本集my-mongo-set映射到此节点的主机 [英] No host described in new configuration 1 for replica set my-mongo-set maps to this node

问题描述

我正在使用Docker设置MongoDB集群。

I'm using Docker to setup a MongoDB Cluster.

我有一个bash脚本，该脚本启动了三个共享一个网桥的容器，以便它们可以与每个容器进行通信其他。我可以连接到网络中的所有MongoDB数据库。

I've a bash script which starts three containers which share a network bridge so they can talk to each other. I can connect to all the MongoDB databases in the network.

NodeJS脚本将群集的成员添加到网络中。

The NodeJS script adds the members of the cluster to the network.

docker rm -v -f mongo0
docker rm -v -f mongo1
docker rm -v -f mongo2

docker network create my-mongo-cluster

docker run -d \
-p 30002:27017 \
--name mongo0 \
--net my-mongo-cluster \
mongo mongod --replSet my-mongo-set

docker run -d \
-p 30003:27017 \
--name mongo1 \
--net my-mongo-cluster \
mongo mongod --replSet my-mongo-set

docker run -d \
-p 30004:27017 \
--name mongo2 \
--net my-mongo-cluster \
mongo mongod --replSet my-mongo-set

node setupDatabase.js

NodeJS脚本：

async function configure() {
    let database = await connect();

    let adminDb = database.admin();

    await addMembers(adminDb);

    await returnStatus(adminDb);
}

async function connect() {
    return await MongoClient.connect("mongodb://localhost:30002/test");
}

async function addMembers(admin) {
    var config = {
        "_id" : "my-mongo-set",
        "members" : [
            {
                "_id" : 0,
                "host" : "mongo0:30002"
            },
            {
                "_id" : 1,
                "host" : "mongo1:30003"
            },
            {
                "_id" : 2,
                "host" : "mongo2:30004"
            }
        ]};

    return admin.command({replSetInitiate : config});
}

async function returnStatus(admin) {
    return admin.command({replSetGetStatus : 1});
}

每当我调用 addMembers 我收到以下错误：

Whenever I invoke addMembers I get the following error:

在新配置1中没有描述副本集my-mongo-set映射到该节点的主机

No host described in new configuration 1 for replica set my-mongo-set maps to this node

根据我的理解，这意味着MongoDB无法连接到给定成员。但是他们都有自己的名字并共享一个网桥。因此它们应该能够相互连接。

From my understanding this means that MongoDB cannot connect to the given member. But they all have their own name and share a network bridge. So they should be able to connect to each other.

任何想法导致此问题的原因？

Any ideas what is causing this issue?

推荐答案

复制设置配置是容器到容器的，因此需要内部地址和端口 container：27017

The replication set configuration is container to container so requires the internal address and port container:27017

var config = {
    "_id" : "my-mongo-set",
    "members" : [
        {
            "_id" : 0,
            "host" : "mongo0:27017"
        },
        {
            "_id" : 1,
            "host" : "mongo1:27017"
        },
        {
            "_id" : 2,
            "host" : "mongo2:27017"
        }
    ]};

可以通过Docker映射的端口进行连接，但是随后您需要使用一个主机名/地址Docker主机可以响应。它还将包括不必要的网络跃点，以跳出并返回到容器中。

It's possible to connect via the Docker mapped ports but then you would need to use a hostname/address that the Docker host can respond to. It would also include unnecessary network hops to get out and back into the containers.

这篇关于新配置1中没有描述副本集my-mongo-set映射到此节点的主机的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！