最简单的Docker创建MongoDB副本集

一：前提

Ubuntu系统 LTS16+ Docker部署完成外部网络支持

当前IP：172.168.20.42

二：终端操作 1.创建一个Docker网络

docker network create mongo-cluster

2.启动容器（带有客户端的版本）

docker run --name mongo1 -p 37071:27017 --net mongo-cluster -d mongo:4.4-bionic mongod --replSet rs1

docker run --name mongo2 -p 37072:27017 --net mongo-cluster -d mongo:4.4-bionic mongod --replSet rs1

docker run --name mongo3 -p 37073:27017 --net mongo-cluster -d mongo:4.4-bionic mongod --replSet rs1

docker ps -a

3.进入mongo1容器 docker exec -it mongo1 mongo

4.配置conf

说明：

37071、37072为主备节点

37073为仲裁节点

rs.initiate({_id: "rs1", members: [ { _id: 0, host: "172.168.20.42:37071" }, { _id: 1, host: "172.168.20.42:37072" }, { _id: 2, host: "172.168.20.42:37073",arbiterOnly:true } ]})

代码连接：

class Program
    { 
        static void Main(string[] args)
        {
            try
            {
                 var settings = MongoClientSettings.FromUrl(new MongoUrl("mongodb://172.168.20.42:37071,172.168.20.42:37072/?replicaSet=rs1"));
                var client = new MongoClient(settings); 
                var _mongodb = client.GetDatabase("testdb1"); 
                // 获取集合
                var collection = _mongodb.GetCollection<BsonDocument>("t1");
                // 在集合中插入文档
                var document = new BsonDocument{{ "name", "John Doe" },{ "age", 42 },{ "isStudent", false }};
                collection.InsertOne(document);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            } 
        }