Questions tagged [mongodb]

MongoDB is a document oriented database (also known as NoSQL database).

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12
votes
3answers
6k views

MongoDB and datasets that don't fit in RAM no matter how hard you shove

This is very system dependent, but chances are near certain we'll scale past some arbitrary cliff and get into Real Trouble. I'm curious what kind of rules-of-thumb exist for a good RAM to Disk-space ...
18
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2answers
84k views

how to connect to mongodb server via ssh tunnel

It was easy for me to connect to my remote mysql server on AWS using a sequelpro, however I'm struggling with doing the same thing with mongodb. I tried setting up an ssh tunnel via command line ...
27
votes
5answers
5k views

Turning off atime on a filesystem

I am setting up a mongoDB replica set and one of the first things I am suppose to do is turn off atime on the file system. After researching this a bit, I am not opposed to doing this, but I have to ...
4
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1answer
3k views

MongoDB SSL encryption and Spring's Driver

There is very limited information regarding MongoDB and SSL encryption for the transport between replica sets and drivers (java clients). Anyone have any experience setting this up? Looking to have ...
5
votes
1answer
9k views

MongoDB virtual memory usage

I'm testing MongoDB for archives data. We have a collection with 160M rows. MongoDB instance takes 76.2 Gb virtual memory on a 12 Gb physical memory box ;-) The swap in null. I read that virtual ...
2
votes
1answer
520 views

Mongodb on AWS EC2 backup strategy

I'm running Mongodb on AWS EC2 instance. Data/log/and journal are stored in a separate volume, formatted as xfs. Currently we are stopping the mongodb instance to take a snapshot, but reading this: ...
2
votes
2answers
793 views

Mongo Replica Set behind Firewall

Given you run a current version (3.2) of MongoDB as a replica set in your network consisting of 3 nodes: mongo1.local mongo2.local mongoarbiter.local Now those nodes should be available via public ...
3
votes
2answers
3k views

MongoDB Sharding on single linux machine

Let's say I wanna have a MongoDB Server with 5 shards on one machine and each shard having replica set of 3 servers. Would that increase performance? What are downsides of this?
13
votes
5answers
32k views

Mongodb - proper way to rotate logs

Mongo docs say that I can: use -SIGUSR1 signal and get the old log renamed and current switched use logrotate from OS I want the OS's logrotate ability to zip old files and remove oldest, but see no ...
3
votes
1answer
10k views

How can I tell if NUMA is enabled on a MongoDB server?

Our mongodb process is consistently using >100% of our CPU (this is on an Ubuntu 64-bit server on Linode) and we're casting about for performance improvements. One suggestion we found was that ...
3
votes
2answers
4k views

How to construct a MongoDB Health Check in HAProxy?

There is a fastcgi example of a binary health check on the HAProxy blog. How would I construct a similar check for MongoDB such that I am doing a more robust health check for MongoDB - one that ...
7
votes
2answers
6k views

Installing multiple mongoDB versions on the same server

I have installed a 2.4 mongoDB version and I'd like to compare against the recently released 2.6 version. I want to know if possible to do a clean new install rather en an update to see if those two ...
0
votes
3answers
833 views

What is the standard system architecture for MongoDB

I know this question is too vague, so I would like to add some key numbers to give insights about what the scenario is Size of each document size - 360KB Total documents - 1.5 million Document ...
8
votes
2answers
29k views

SocketException in Mongo logs

We are running mongo for 4 months so far , But lately I am seeing a lot of SocketException handling request, closing client connection: 9001 socket exception [2] server [127.0.0.1:58996] How can I ...
6
votes
3answers
34k views

Cannot connect to MongoDB in docker

Using the official mongo image from the docker hub, I run the following command to get it running: docker run --name api -p 127.0.0.1:27017:27017 -p 127.0.0.1:28017:28017 -d mongo Then from another ...
1
vote
1answer
1k views

diagnosing mongodb major faulting and erratic behavior

We have a mongodb instance running on an amazon ec2 large (7.5GB) ubuntu instance (same machine that our node.js server is running from). Traffic has increased a LOT recently and we are starting to ...
1
vote
0answers
2k views

Restore mongoDB by --repair and WiredTiger

We accidentally deleted the directory rm -rf /data/db which was our MongoDB path, and thanks to extundelete, we recovered it and got the directory /data/db. Here are our files in the directory, and ...
5
votes
2answers
884 views

Should I install MongoDB using Ubuntu's repository or MongoDB's private repository?

I was reading the MongoDB install instructions and noticed they have a private repository that the instructions tell you to add. I'm wondering if this is really needed because MongoDB is also in the ...
3
votes
2answers
820 views

Monitoring MongoDB 3 using StackDriver in GCE

Has anyone successfully managed to monitor a MongoDB 3 cluster (or standalone db) with StackDriver in GCE ? I've setup a MongoDB 3.0.6 cluster in GCE (replica set with 2 replica and 1 arbiter) I'm ...
3
votes
3answers
6k views

MongoDB server crashed, showing the following error

I have a MongoDB instance running in a VMWare VM with Ubuntu Server 12.04. Suddenly the server crashed, and when I try to reinitiate it I get the following error: jonathanong@ubuntu:~/mongodb/solo$ /...
2
votes
2answers
511 views

Gearman writing “Too many open files” into the log. Disk space issues

We're running a service that makes screenshots of URL supplied and posts it to our S3 bucket. Similar to manet, but our custom coded nodejs app. We don't store the screenshots on our local hard drive. ...
1
vote
1answer
924 views

Strange behaviour starting process with init script

I'm seeing some strange behaviour when starting a process with an init script. Most likely I am doing something stupid, but perhaps someone could let me know what might cause this behaviour: [...
1
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1answer
3k views

Setting up mongodb via upstart - how to pass options?

I installed MongoDB in an Ubuntu Server VM inside VMware using these instructions: http://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/. Everything works fine, and I can access MongoDB ...
1
vote
2answers
263 views

Monitoring MongoDB 3.2 using Stackdriver in Google Compute Engine failed silently

I'm having problem monitoring MongoDB 3.2 with Stackdriver as of 28 Aug 2016. There is no mention of mongo whatsoever in /var/log/syslog but if I made a configuration error on the .conf file, it ...
0
votes
2answers
812 views

Mongodb primary node not Resolved in Debezium Kafka Connect — Docker Compose

i have this docker compose file, that contains bitnami/mongodb containers for creating a replica set. and I've used zookeeper, kafka & debezium-connector for monitoring my mongodb replica set. ...
0
votes
1answer
1k views

Connecting to MongoDb at EC2 - how do I know username, host, port, ect?

I manually installed MongoDb on EC2 micro instance using this http://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/ Now I need to connect to it from a Rails application. Where do I find ...
0
votes
1answer
1k views

CentOS 7 Cannot delete ports defined for MongoDB

I installed and later removed the MongoDB server on a CentOS 7 box. While cleaning up, I noticed that the ports assigned to MongoDB were still open. if I remember correctly, I was able to delete the ...