Questions tagged [mongodb-3.6]

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mongodb - Replica set creation error: Quorum check failed because not enough voting nodes responded

I am configuring a mongodb replica set. From my current primary node, when rs.add('host1:27017'), it yields this error Quorum check failed because not enough voting nodes responded; required 2 but ...
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10 views

How to add calculated value as a field into an existed array of sub document using MongodB aggregation

I'm working on MongoDB and I have a document like below structure. I am trying to calculate total services cost and each services lane cost. Here services are sub document. My document structure: { ...
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35 views

How to delete a user in MongoDB 3.6

I was in trouble with deleting the users in mongodb3.6. I created a user with: db.createUser({ user: "username" , pwd: "password", roles: ["root"]}) And I deleted it with: db.dropUser("username") ...
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1answer
25 views

Slow performance of query with $and & $or operators

My query with $and, $or operators is performing poorly. Even though I've built a compound index on all three fields that are specified in my query criteria, the query does a complete collection scan. ...
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1answer
27 views

Why a query is not covered when using a range operator on documents?

I have created the following 1000 documents: for(i=0;i<1000;i++){db.doc.insert({"doc":{"k1":"v_"+i,"k2":i},"scal":i})} So a document looks like this: var d1 = db.doc.findOne() { "_id" : ...
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1answer
11 views

Mongo Memory management

I had a few questions If there is sufficient RAM, does Mongo load entire collection into memory? Suppose I had two collections A & B and I know that there is not enough RAM to hold both - and if ...
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1answer
20 views

Is it possible to retrieve a history of the remote connections to the MongoDB including the IP addresses and the executed commands?

For some reasons I disabled the user access control and somehow all collections have been wiped out. So I want an activity log to find out how this happened I need a list like this: | Date/Time ...
1
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1answer
34 views

Why $group is very slow in aggregation and how can faster it in MongoDB [closed]

My query is taking ~3 seconds to execute with the $group stage, How can I faster this? My query is: db.getCollection('employee_data').aggregate([ { $match: //Filter }, { $group: { ...
1
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1answer
38 views

Import indexes from MongoDB v2.4 to MonDB v3.6.4

I have migrated the collection.bson file from MongoDB 2.4 to MongoDB 3.6.4 as collection.json. But their is 1 more file collection.metadata.json in MongoDB 2.4. How can I import this to MongoDB 3....
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2answers
151 views

MongoDB CSV Export: One Array/Column & Array Index on rows, or vice versa

I have a MongoDB schema that looks like this: const batchSchema = mongoose.Schema({ _id: mongoose.Schema.Types.ObjectId, time: {type: [Number]}, tmp: {type: [Number]}, hum: {type: [Number]}, ...
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0answers
5 views

mongodb autinticationDatabase issue

I have already authenticationDatabase enabled on my MongoDB. Now I want to disable the authenticationDatabase for my MongoDB. I have removed the --auth from the mongod.system file. After restart the ...
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1answer
312 views

MongoDB, Getting Started and Connecting with Compass

I'm trying to connect to my mongoDB running as a service on my rPi3B+, using openSuse Tumbleweed 64bit, mongo version 3.6.2, from my laptop sharing the same LAN/Wifi (pi on LAN & laptop on Wifi). ...
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1answer
30 views

I am trying to achieve a Disaster recovery for Mongo DB

Right now i have a MongoDb HA in site one and i need another site with asynchronous replication enables in another location.This is a base plan of mine to achieve a disaster recovery . I dont have ...
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1answer
246 views

MongoDB 3.6 crashed due to invariant() failure

MongoDB crashed twice in 6 hours today due to invariant() failure. We have been using MongoDB 3.6.3 for more than a year now, but this is the first time that we saw this issue. The extract from the ...
1
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1answer
191 views

MongoDB does not allow to create unique partial index in field that contains null

I'm using MongoDB 3.6.9 (with Ubuntu) to save a set of documents that contain one field named rss_id and for some documents, this field has the value null. I want to create a unique index in that ...
1
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1answer
59 views

No output when use pymongo watch()

I try to access real-time data changes with pymongo.mongo_client.MongoClient.watch(), code example (Python 3.5.3, pymongo==3.7.2): from pymongo import MongoClient DB_CON_STR = "mongodb://10.10.10....
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1answer
77 views

MongoDB 3.6, adding replica set always fails as on production setup with cannot open /dev/urandom Too many open files

I am trying on add a 3.6 mongoDB node to a 3 member replica set running 3.4. Doing this as a part of DB upgrade from 3.4 to 3.6. When I add the new member to replica set, it goes to STARTUP2, data ...
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1answer
110 views

Why am I seeing these mongodb 3.6.5 server log messages in huge amounts?

Could someone please shed some light on these mongodb 3.6.5 server log messages on the primary node of a 3-member replicaset? rs.status() says all the nodes are up and running but seeing a ton of (I)...
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1answer
49 views

mongodb array query woes

I am struggling with array matching and getting multiple records back. "players" : [ { "pname" : "player_4", "loc" : [ -2.2, 1, 0] }, { "pname" : "player_2", ...
1
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2answers
66 views

Is it possible to run an arbiter on a machine that also hosts a secondary member?

I have two machines (it is a restriction) configured as a replica set with MongoDB 3.6.5. Is it possible to run an arbiter on a machine that also hosts a secondary member? Even if it is not ...
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1answer
46 views

Replica Set Oplog Maxsize

I have two databases (Mongodb 3.6.5) using ReplicaSet, when I made a split in the network, I am forcing the secondary database to be the primary. cfg = rs.conf() cfg.members[0].votes = 0 cfg.members[...
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1answer
69 views

How to solve replication in MongoDB only with two machines?

I have two machines connected in a ring network, each one running Wildfly in HA mode using JGroups ant MongoDB in HA Mode using Replica Set. The machine 1 is the primary and machine 2 is secondary. ...
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1answer
688 views

mongodb - what roles the user to grant access to all databases

I have created mongouser as testuser with below roles. I want to give access for new databases for this user. what roles the user to grant access to all databases. db.createUser({ user: "testuser" , ...
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1answer
267 views

MongoDB Facet Error pipeline requires text score metadata, but there is no text score available

I created a mongodb faceted pipeline that the following is a subset of: db.books.aggregate( [ { $facet: { "categories": [ { $match: { $text:...
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0answers
31 views

Changing collection path and index path in mongod.conf file

I want to have collection path and index path in different folders of my mongodb. What are the required changes? My current configuration file is this: storage: dbPath: /db/mongodb journal: ...
2
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1answer
1k views

Not authorized on admin to execute command mongoDB: Atlas M0 Free Tier cluster

My MongoDB shell has version v3.6.5 (the same with older versions) & MongoDB server has version: 3.6.8 I have MongoDB M0 Free Tier cluster and I want to use from shell different commands. So, I ...
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0answers
97 views

timeout while dropping database - MongoDB

Getting time out issue while dropping database from mongoDB. Database size is around 200GB. {          "code" : 46,          "ok" : 0,          "errmsg" : "timed out waiting for DBNAME....
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0answers
218 views

getIndexes returns empty array on MongoDB collection

I'm trying creating indexes on a MongoDB collection and while they are correctly created and they work (I can see the index in the executionStats), the output of the getIndexes() function is an empty ...
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1answer
332 views

Query sharded collection returns all the results from the primary shard AND from the other shards

I tried to set up a shard to test this functionality and maybe migrate some of our data into it. I followed the documentation guide https://docs.mongodb.com/v3.4/tutorial/convert-replica-set-to-...
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1answer
61 views

dokku-mongo Export Database Error

dokku-mongo export Database command is showing error "This does not look like a tar archive" $ ssh svuser@dbexample.com $ dokku mongo:export database > backup.tar $ tar -xfv backup.tar tar: This ...
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1answer
98 views

unable to add a range to a tag using sh.addTagRange command

Have setup a 4 node test shard cluster: 1- mongos 1- config server 2- shard nodes hosting 1 shard each for a collection. Cluster is working perfectly, but when trying to run the following command: ...
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1answer
186 views

Mongo doesn't restore user password

I have following scenario: Dump Mongo database (cmd mongodump) Change password from one of admin users Restore Mongo database (cmd mongorestore) EDIT: I use following command for db dump: ...
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0answers
22 views

How to do a find query on the result of another find query?

I'm working with MongoDB because the company where I work is doing a migration from pSQL. We have reports with filters: first the report lets you select a range of dates by year and month, then you ...
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0answers
165 views

It is possible to take incremental backup in mongoDB Shard cluster? without opsmanager

Shard MongoDB Cluster: 3-router 3-config 2-shard (3-replica's per shard) We are tring to take incremental backup for every one hour. We gone through few google links, but no luck. As per our above ...
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3answers
6k views

mongodb: update string field to integer

I have a collection that has some fields that should be integers. Due to a software bug, some of these values are strings. I need to convert them. Here is an example document: var coll = db....
1
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1answer
3k views

node is not in primary or recovering state

My config file is: systemLog: destination: file logAppend: true path: c:\data\log\mongod.log storage: dbPath: c:\data\db journal: enabled: true replication: replSetName:...
1
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1answer
237 views

How to avoid warning with file system cache in mongodb?

OS Windows 10 x64. Version of MongoDB 3.6.5 When I'm starting mongo process, I'm always getting: MongoDB shell version v3.6.5 connecting to: mongodb://127.0.0.1:27017/ MongoDB server version: 3.6.5 ...
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1answer
276 views

Mongodump Backup Resume

My database size is approx 1.5 TB and I have approx 2TB free on backup mount point. But after 10 hours my backup fail due to lack of storage and its just 60% complete. Is their any why through which i ...
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1answer
245 views

How to connect via config file in mongodb

In config file I have: systemLog: destination: file logAppend: true path: c:\data\log\mongod.log storage: dbPath: c:\data\db journal: ...
2
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1answer
520 views

MongoDB crashes with out-of-memory or is being killed by oom-killer

A two shards MongoDB database regularly crashes with out-of-memory error or is being killed by the oom-killer. The system runs on GCE Debian 9.4 with MongoDB v3.6.5, WiredTiger storage engine and ...
1
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0answers
15 views

How can I dump the data which has been added recently?

On a daily basis I will download the data from mongodb and make a backup. I use the command mongodump -h $MONGODB_SERVICE_HOST -o /opp/rot/llc/ttc -u 'admin' \ -p $MONGODB_ADMIN_PASSWORD So in ...
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1answer
79 views

Unable to perform queries through mongos

I have setup a minimal replicated configuration with mongodb 3.6.3,it seems to be everything fine but when I connect to the mongos (which as far as I understand acts like a kind of load balancer in ...
2
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0answers
712 views

MongoDB GridFS triples the file sizes

I really like using mongodb to store my data and recently I tried out GridFS and it really fits my use case. My problem with it is the space requirement, which seems quite odd. I have ~107GB of ...
1
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2answers
93 views

Should I put users in admin DB or in the DB that they should have access to

What would the pros / cons be of putting users that should have access to one database in the admin database instead of the database that they should have access to? Background: I'm a C# developer. ...
2
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1answer
833 views

High CPU Utilization for Mongodb ReplicaSet Secondary Nodes

I am using MongoDB server version: 3.6.4 (WiredTiger storage engine) with 3 node replica set on AWS r4 large machines. Sharing the CPU Utilization graph of all the nodes Primary (with .33%) ...
2
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1answer
2k views

How to configure SSL mongodb connection in yml file spring boot? [closed]

I was trying to setup ssl mongodb connection from spring boot but I couldn't able to find a way. How can I add pem and ca file to below connection? Please note I am using replica set data: ...
2
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1answer
2k views

Mongodb create user with only read and write access

Hi I created a new using using following command in mongodb, db.createUser({ user: 'csquad', pwd: 'somepass123', roles: [ { role: "readWrite", db: "cloud"}]}); Now this user is able to login to db ...
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1answer
101 views

MongoDB Ops Manager

I have few questions regarding backup process in MongoDB Ops Manager 1) How backup process works ? 2) According to documentation for production do we need to have 3 dedicated servers for ...
1
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1answer
151 views

Mongo Zone Sharding Implementation Issue

As I am new with MongoDB. I have configured 2 config server, 2 shards and all are connected with mongod client. Also, One Mongos client is UP and Running. I am currenctly implementing Sharding ...
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1answer
307 views

Allow only find and insert action to mongodb collection

I want to create collection. that allow only insert and find operation. i read Privilege Actions in mongodb and i applied that method but all actions are performed like remove and update i tried ...