MongoDB 3.6 资料汇总

Linux 下源代码按照步骤 查看

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官方JAVA API资料查看

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修改默认IP，运行外部请求访问，使用 –bind_ip_all参数配合启动

mongod --bind_ip_all

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• json转bson，附上官方的例子原始连接

String inputFilename;                  // initialize to the path of the file to read fromMongoCollection<Document> collection;  // initialize to the collection to which you want to writeBufferedReader reader = new BufferedReader(new FileReader(inputFilename));try {    String json;    while ((json = reader.readLine()) != null) {        collection.insertOne(Document.parse(json));    } } finally {    reader.close();}

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cluster搭建教程，按照此篇在MongoDB 3.6中有所改变

• rs1 rs2 启动脚本修改为如下

###for rs1$BIN_HOME/mongod --port $RS1_1_PORT --dbpath $RS1_1_DB_PATH --fork --logpath $RS1_1_DB_LOG --replSet $RS1 --smallfiles --nojournal --shardsvr$BIN_HOME/mongod --port $RS1_2_PORT --dbpath $RS1_2_DB_PATH --fork --logpath $RS1_2_DB_LOG --replSet $RS1 --smallfiles --nojournal --shardsvr $BIN_HOME/mongod --port $RS1_3_PORT --dbpath $RS1_3_DB_PATH --fork --logpath $RS1_3_DB_LOG --replSet $RS1 --smallfiles --nojournal --shardsvr### for rs2$BIN_HOME/mongod --port $RS2_1_PORT --dbpath $RS2_1_DB_PATH --fork --logpath $RS2_1_DB_LOG --replSet $RS2 --smallfiles --nojournal --shardsvr$BIN_HOME/mongod --port $RS2_2_PORT --dbpath $RS2_2_DB_PATH --fork --logpath $RS2_2_DB_LOG --replSet $RS2 --smallfiles --nojournal --shardsvr$BIN_HOME/mongod --port $RS2_3_PORT --dbpath $RS2_3_DB_PATH --fork --logpath $RS2_3_DB_LOG --replSet $RS2 --smallfiles --nojournal --shardsvr

• 解决错误 Attempting to initiate a replica set with name xxx, but command line xxx

rs.initiate(config){    "ok" : 0,    "errmsg" : "Attempting to initiate a replica set with name rs2, but command line reports rs1; rejecting",    "code" : 93,    "codeName" : "InvalidReplicaSetConfig"}

查询资料得知，当前mongod 配合 –replSet 参数里的 数值一定要和config参数里的一致，不然就会报错

我原来的是这个,指定的是rs1，但config文件里，和实际运行的节点里写的是rs2,因为不一致所以导致了这个错误

把下面的rs1修改为rs2（我的实际replSet 名字）即可

/usr/local/mongodb/bin/mongod --port 27020 --dbpath /home/mongo_db/data/rs1_3 --fork --logpath /home/mongo_db/log/rs1_3.log --replSet rs1 --smallfiles --nojournal

• 报错 mirrored config server connections are not supported,这里是国外解决方法原帖

简单来说就是把启动config server的脚本修改如下

###for statup the config server$BIN_HOME/mongod --port $CONF1_PORT --dbpath $CONF1_DB_PATH --fork --logpath $CONF1_DB_LOG --configsvr --replSet conf$BIN_HOME/mongod --port $CONF2_PORT --dbpath $CONF2_DB_PATH --fork --logpath $CONF2_DB_LOG --configsvr --replSet conf$BIN_HOME/mongod --port $CONF3_PORT --dbpath $CONF3_DB_PATH --fork --logpath $CONF3_DB_LOG --configsvr --replSet conf

另外需要连接到任意一台的config server上 执行命令注册 config server的repl集群

###因为是单机，多实例环境，所以省略了IP地址，直接指定了端口mongo --port $CONF1_PORT

//登陆以后，执行一下命令，注册名为conf的config集群.rs.initiate(  {    _id: "conf",    configsvr: true,    members: [      { _id : 0, host : "localhost:40000" },      { _id : 1, host : "localhost:40001" },      { _id : 2, host : "localhost:40002" }    ]  })

然后启动route,这次不会报错了

mongos --configdb "conf/localhost:40000,localhost:40001,localhost:40002" --fork --logpath $ROUTE_DB_LOG --port $ROUTE_PORT  --bind_ip_all 

• java客户端 连接 cluster的时候报错 Can not create shards: sharding not enabled for db
  记得在mogos，也就是route上，执行如下命令，your_db_name填你自己的实际数据库名.

sh.enableSharding("your_db_name")

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java端 简单实例代码

/* * Copyright 2015 MongoDB, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *   http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package tour;import com.mongodb.Block;import com.mongodb.MongoClient;import com.mongodb.MongoClientURI;import com.mongodb.client.MongoCollection;import com.mongodb.client.MongoCursor;import com.mongodb.client.MongoDatabase;import com.mongodb.client.model.BulkWriteOptions;import com.mongodb.client.model.DeleteOneModel;import com.mongodb.client.model.InsertOneModel;import com.mongodb.client.model.ReplaceOneModel;import com.mongodb.client.model.UpdateOneModel;import com.mongodb.client.model.WriteModel;import com.mongodb.client.result.DeleteResult;import com.mongodb.client.result.UpdateResult;import org.bson.Document;import java.util.ArrayList;import java.util.List;import static com.mongodb.client.model.Accumulators.sum;import static com.mongodb.client.model.Aggregates.group;import static com.mongodb.client.model.Aggregates.match;import static com.mongodb.client.model.Aggregates.project;import static com.mongodb.client.model.Filters.and;import static com.mongodb.client.model.Filters.eq;import static com.mongodb.client.model.Filters.exists;import static com.mongodb.client.model.Filters.gt;import static com.mongodb.client.model.Filters.gte;import static com.mongodb.client.model.Filters.lt;import static com.mongodb.client.model.Filters.lte;import static com.mongodb.client.model.Projections.excludeId;import static com.mongodb.client.model.Sorts.descending;import static com.mongodb.client.model.Updates.inc;import static com.mongodb.client.model.Updates.set;import static java.util.Arrays.asList;import static java.util.Collections.singletonList;/** * The QuickTour code example see: https://mongodb.github.io/mongo-java-driver/3.0/getting-started */public class QuickTour {    /**     * Run this main method to see the output of this quick example.     *     * @param args takes an optional single argument for the connection string     */    public static void main(final String[] args) {        MongoClient mongoClient;        if (args.length == 0) {            // connect to the local database server            mongoClient = new MongoClient();        } else {            mongoClient = new MongoClient(new MongoClientURI(args[0]));        }        // get handle to "mydb" database        MongoDatabase database = mongoClient.getDatabase("mydb");        // get a handle to the "test" collection        MongoCollection<Document> collection = database.getCollection("test");        // drop all the data in it        collection.drop();        // make a document and insert it        Document doc = new Document("name", "MongoDB")                       .append("type", "database")                       .append("count", 1)                       .append("info", new Document("x", 203).append("y", 102));        collection.insertOne(doc);        // get it (since it's the only one in there since we dropped the rest earlier on)        Document myDoc = collection.find().first();        System.out.println(myDoc.toJson());        // now, lets add lots of little documents to the collection so we can explore queries and cursors        List<Document> documents = new ArrayList<Document>();        for (int i = 0; i < 100; i++) {            documents.add(new Document("i", i));        }        collection.insertMany(documents);        System.out.println("total # of documents after inserting 100 small ones (should be 101) " + collection.count());        // find first        myDoc = collection.find().first();        System.out.println(myDoc.toJson());        // lets get all the documents in the collection and print them out        MongoCursor<Document> cursor = collection.find().iterator();        try {            while (cursor.hasNext()) {                System.out.println(cursor.next().toJson());            }        } finally {            cursor.close();        }        for (Document cur : collection.find()) {            System.out.println(cur.toJson());        }        // now use a query to get 1 document out        myDoc = collection.find(eq("i", 71)).first();        System.out.println(myDoc.toJson());        // now use a range query to get a larger subset        cursor = collection.find(gt("i", 50)).iterator();        try {            while (cursor.hasNext()) {                System.out.println(cursor.next().toJson());            }        } finally {            cursor.close();        }        // range query with multiple constraints        cursor = collection.find(and(gt("i", 50), lte("i", 100))).iterator();        try {            while (cursor.hasNext()) {                System.out.println(cursor.next().toJson());            }        } finally {            cursor.close();        }        // Query Filters        myDoc = collection.find(eq("i", 71)).first();        System.out.println(myDoc.toJson());        // now use a range query to get a larger subset        Block<Document> printBlock = new Block<Document>() {            @Override            public void apply(final Document document) {                System.out.println(document.toJson());            }        };        collection.find(gt("i", 50)).forEach(printBlock);        // filter where; 50 < i <= 100        collection.find(and(gt("i", 50), lte("i", 100))).forEach(printBlock);        // Sorting        myDoc = collection.find(exists("i")).sort(descending("i")).first();        System.out.println(myDoc.toJson());        // Projection        myDoc = collection.find().projection(excludeId()).first();        System.out.println(myDoc.toJson());        // Aggregation        collection.aggregate(asList(                match(gt("i", 0)),                project(Document.parse("{ITimes10: {$multiply: ['$i', 10]}}")))        ).forEach(printBlock);        myDoc = collection.aggregate(singletonList(group(null, sum("total", "$i")))).first();        System.out.println(myDoc.toJson());        // Update One        collection.updateOne(eq("i", 10), set("i", 110));        // Update Many        UpdateResult updateResult = collection.updateMany(lt("i", 100), inc("i", 100));        System.out.println(updateResult.getModifiedCount());        // Delete One        collection.deleteOne(eq("i", 110));        // Delete Many        DeleteResult deleteResult = collection.deleteMany(gte("i", 100));        System.out.println(deleteResult.getDeletedCount());        collection.drop();        // ordered bulk writes        List<WriteModel<Document>> writes = new ArrayList<WriteModel<Document>>();        writes.add(new InsertOneModel<Document>(new Document("_id", 4)));        writes.add(new InsertOneModel<Document>(new Document("_id", 5)));        writes.add(new InsertOneModel<Document>(new Document("_id", 6)));        writes.add(new UpdateOneModel<Document>(new Document("_id", 1), new Document("$set", new Document("x", 2))));        writes.add(new DeleteOneModel<Document>(new Document("_id", 2)));        writes.add(new ReplaceOneModel<Document>(new Document("_id", 3), new Document("_id", 3).append("x", 4)));        collection.bulkWrite(writes);        collection.drop();        collection.bulkWrite(writes, new BulkWriteOptions().ordered(false));        //collection.find().forEach(printBlock);        // Clean up        database.drop();        // release resources        mongoClient.close();    }}