mongos

A fault descriptionOnline game clothing using MongoDB cluster shards, game profiles send query requests through MONGOs instances. Develop colleague to reflect program connection MONGOs errorFailed to connect to:10.4.4.66:28018:send_package:error

1, MONGOsMONGOs is a point of interaction between the user and the cluster, whose duty is to hide the complexity inside the Shard and provide the user with a simple single-server interface, and there are gaps in the abstraction layer, but in most

MONGOs is an automatic slicing component provided by MongoDB, in which almost all requests are forwarded through MONGOs to Mongod in MongoDB systems that provide fragmentation, and then mongos to be aggregated and finally returned to the client. To

MONGOs is the automatic Shard component provided by MongoDB, in the MongoDB system that provides the Shard function, almost all of the requests will be forwarded to the Mongod through MONGOs, and then the MONGOs is aggregated and returned to the

In the production environment, the MongoDB shards are built, providing three mongos interfaces. However, there is no failover mechanism in MongoDB, the official recommendation is to deploy MONGOs and application servers together, multiple

The ingress MONGOs of a MongoDB shard cluster itself has no failover mechanism. The official recommendation is to deploy MONGOs and application servers together, and multiple application servers will deploy multiple MONGOs instances, which is

Production environment, the use of MongoDB shards, due to sudden power outages, the service up again when the discovery of three MONGOs process has a boot failure, multiple attempts still cannot start. View the log with the following contents:650)

Mongoose's newspaper when I upgraded from [email protected] to [email protected], there was a problem:Unhandled rejection Mongoerror:no MONGOs proxies found in seed listWhat to do, when I Google a bit

As the volume of MONGODB data increases, it is possible to limit the storage capacity of a single node, and application a large number of accesses can also cause a single node to fail, so a clustered environment needs to be built and the entire

Failed to connect to:192.168.100.200:28018:send_package:error reading from socket:the sockets is closedWrong wording$server = ' mongodb://10.10.41.25:38018/'. $config [' db_name ']. ', 10.10.41.25:28018/'. $config [' db_name ']. ', 10.10.41.25:48018/

MongoDB startup MONGOs Times following errorError initializing sharding System:DistributedClockSkewed:clock skew of the cluster ambari01:20000,ambari02:20000, Ambari03:20000 is too far out of bounds to allow distributed lockingThe error is that the

1, the structure and principle of the Shard Shard Cluster Structure Distribution: The Shard cluster consists of three components: Mongos,config Server,shard1) MONGOSThe entrance to the database cluster request, all requests are coordinated

Issue versionmongodb-v3.4.4Problem descriptionMONGOs died two times in two days, the last words of death only log:2017-11-01t11:25:27.135+0800 F-[networkinterfaceasio-taskexecutorpool-1-0] Failed to Mlock:cannot allocate Memor y2017-11-01t11:25:27.14

[TOC]First, Introduction MongoDB currently has 3 core advantages: "Flexible mode" + "High Availability" + "extensibility", through JSON documents to achieve flexible mode, through the replication set to ensure high availability, through the

1. shardingConcept: In MongoDB There is another cluster, that is, sharding technology, can meet the needs of a large number of MONGODB data volume growth.When MongoDB stores massive amounts of data, a machine may not be enough to store data enough

I. Index 1, index operation 1.1 inserting data> use testdbswitched to db testdb> for (i=1;i db.students.find().count()100001.2 Creating an Index在name字段构建升序索引：> db.students.ensureIndex({name: 1}){ "createdCollectionAutomatically" : false,

In MongoDB (version 3.2.9), sharding refers to the distribution of collection to different servers, where each server stores only a portion of the collection, and all of the services that serve the shards form a shard cluster. The server for the

MongoDB3.0.1 is deployed in multiple parts. There are not many deployment documents (HE zhixiong) in 3.0 of China ).1) The parts include:1. There are at least three config servers: The data block-to-shard ing is stored to determine where the data is

Create a virtual machine, if you are using copy to install the system, remember to modify the machine name, otherwise all machine names are the same, will cause installation failureAt the same time, shut down the firewall, all the machine timing to

a), shards include:1. At least 3 config servers: stores the data block mapping of shards to determine the data stored on that slice. 2, Distribution router: More than 1 MONGOs, the user's read, write requests distributed to the Shard, the server is