MongoDB is a document oriented database (also known as NoSQL database).
-2
votes
1answer
109 views
MongoDB Crashed,Not able to start it again [closed]
Mongodb fail to start after showing this error...and not able to start it again..?Can u help me find out?
*** glibc detected *** /usr/lib/mongodb/mongo: corrupted double-linked list: ...
1
vote
1answer
66 views
Quickest/best way to copy a portion of a large mongo database to another server?
I have a dataset of 100m tweets stored in Mongo, unoptimized and unindexed.
I need to copy all tweets from the last month onto another server, what is the best way to do this?
My idea was to use a ...
0
votes
2answers
25 views
starting mongodb outside of path
I've just installed mongodb, and had to install 2.0.4, which I couldn't figure out how to do with 10gen, so followed this tutorial and installed from the tar file.
...
1
vote
1answer
58 views
Mongos connecting to replica set
This is a pretty basic question but I can't find any answers on it. I know you use mongos to interface with a sharded collection. However, if I have a replica set which is not sharded how do I set up ...
1
vote
2answers
73 views
Low priority batch processes on live Mongo database
We want to run MapReduces on our live Mongo database, mainly so that we can extract metrics. However, we've had some bad outages caused by these MRs bogging down the Mongo server (in particular 100% ...
2
votes
2answers
159 views
Does a MongoDB replica set require at least 2 or 3 members?
Documentation here says three:
http://docs.mongodb.org/manual/tutorial/deploy-replica-set/
"A replica set requires three distinct systems..."
Whereas the documentation here says two:
...
0
votes
1answer
275 views
mongo php on ubuntu 12.04 [closed]
this is what I did:
for mongo install on ubuntu http://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/
done right mongo working
then php driver
apt-get install mongodb php5 php5-dev ...
1
vote
2answers
474 views
running mongodb with openvz
Has anyone had any luck getting mongodb working on openvz?
Was looking for some tips, tricks, hacks to get it from running out of memory
I am running on centos on media temple and the servers just ...
2
votes
1answer
105 views
MongoDB ReplicaSet slow read performance
I successfully basic configure my replica set, but i noticed slow read performance. I have 2 mongo servers and 1 arbiter in my replica set. All are running on Centos 6.3 minimal setup (just ...
7
votes
3answers
1k 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 ...
2
votes
1answer
243 views
mongoexport csv output array values
I'm using mongoexport to export some collections into CSV files, however when I try to target fields which are members of an array I cannot get it to export correctly.
command I'm using:
...
0
votes
1answer
53 views
mongodb segmentation fault(11) macosx
I have problem, i cant figure out, how to fix..
So i am on MacOSX machine, running php 5.3.15 version, using mongo 1.3.1 version.
When i try to execute php script, in which i try to connect to remote ...
4
votes
1answer
140 views
MongoDB Replica-Set with Replication Lag on one node only
we experience a strange behaviour in our MongoDB Replica-Set, setup of 3 Nodes (all Xeon Quad-Core-Class CPUs, 16GB of RAM for one, 24GB for the other two nodes)
The one node with less RAM is normal ...
1
vote
3answers
120 views
Amazon EC2 High-Memory Extra Large Instance [closed]
I am new to Mongodb and EC2. If I use following single MongoDb server :
High-Memory Extra Large Instance 17.1 GiB memory, 6.5 ECU (2 virtual cores with 3.25 EC2 Compute Units each), 420 GB of local ...
1
vote
1answer
52 views
Is it possible to run multiple mongod instances on a single set of database files
We have large multi-gigabyte data sets on which we run very complex queries, for example
{
$or: [ { id: 30000001, ... }, { id: 30000005, ... }, ..., { id: 30001005, ... } ]
}
It seems that CPU is ...
2
votes
1answer
193 views
non-mapped virtual memory & total number of connections
We have two MongoDB data nodes (replica set) - Primary & Secondary. I noticed that the non-mapped virtual memory is relatively high and wondering if they are hurting our MongoDB performance (The ...
1
vote
1answer
198 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
1answer
130 views
MongoDB Replica Set, initiate() need to login error
I am trying to setup a replica set, but when I issue:
rs.initiate()
On the first server, I get the following error:
{ "errmsg" : "need to login", "ok" : 0 }
That is strange though, because in my ...
0
votes
1answer
625 views
How do I upgrade mongodb 1.8 to 2.2 on ubuntu?
Following this guide: http://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/ I ended up with mongodb 18 on my Ubuntu 10.04.
I've just read the 2.2 mongodb release notes on upgrading and ...
1
vote
1answer
458 views
High CPU usage on mongodb server when idle?
I am getting strange usage numbers on MongoDB server when it is in almost idle state: http://pastebin.com/cKVyGMts (no queries) DB size is about 3.3 Gb
I can see in mongodb.log that snapshotthread is ...
0
votes
0answers
16 views
Is this normal or due to bug in mongodb?
I am new to mongodb and i installed it on xen para virtual vm and when given command
"mongo" terminal freezed and on the top output command mongo is taking almost 100% CPU.
Is this a bug,or does ...
0
votes
0answers
78 views
Can't Connect to mongodb from application after changing IP of Ubuntu Server
Am facing a rather weird situation on an ubuntu server 12.04LTS machine. I have a mongodb installed and deployed a j2ee application on tomcat to connect to it. there was a need to change the IP of the ...
3
votes
1answer
103 views
Multiple MongoDB instances on same server
We set up a MongoDB development server on CentOS 6.3 and were able to separate different projects by using separate config files and rc scripts. Now we're looking at setting up a MongoDB production ...
1
vote
1answer
21 views
Understanding mongod log entries
Can anyone explain the numbers in the % column, in this mongod log snippet ?
It is building a new index but I'm not sure I understand why the numbers look like that
Tue Nov 20 11:38:08 ...
3
votes
3answers
2k views
Run a MongoDB configuration server without 3GB of journal files
For a production sharded MongoDB installation we need 3 configuration servers.
According to the documentation "the config server mongod process is fairly lightweight and can be ran on machines ...
1
vote
1answer
151 views
How to install 64bit version of Mongodb
How can I install the 64bit (x86_64) version of MongoDB?
I've specified in the 10gen.repo the 64bit:
baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64
But when I run:
yum install ...
1
vote
1answer
291 views
How to set Mongodb
I'm trying to set up Mongodb on my vps but when trying to start it:
service mongod start
It returns this error:
Starting mongod: /usr/bin/mongod: error while loading shared libraries:
...
0
votes
2answers
298 views
Is it possible to upgrade Ubuntu 10.04 32bit to 64bit with out reinstall OS?
My VPS server is running Ubuntu 10.04 32bit now, but I have to upgrade my OS to 64bit because of the 32-bit limitation of mongoDB.
But if i reinstall the system, there are a lot of programs need to ...
3
votes
3answers
131 views
Drop in solution for logging to DB
I'm considering setting up our servers to log to a Mongo Database rather than log files. Logs will then be all on one server, queryable, and overall easier to manage.
I'd love to find a solution that ...
3
votes
1answer
226 views
Rails/Mongo across multiple different geo-regions
I have a system that by necessity requires physical presence in three or more different locations and I need advice on structuring in such a way that my database stays replicated in a timely manner ...
2
votes
2answers
81 views
Is rest=true a must for MongoDB's replicaSet setup?
I see there are a lot of tutoirl on the internet suggest to add the rest parameter
mongod --rest --replSet myset
Are there any side effect if I don't use them?
1
vote
4answers
230 views
Can Mongo be deployed to production on one server?
I don't want to rent another server...
But wikipedia says:
MongoDB should never be deployed on
fewer than two servers[citation
needed]: a master and a slave. A
master can perform reads and ...
1
vote
2answers
133 views
Varnish Cache logging to MongoDB
I want to stream Varnish's log into MongoDB for realtime reporting.
Can this be configured directly within Varnish or can the official Varnish-Agent (https://github.com/varnish/varnish-agent) be used ...
1
vote
2answers
72 views
Mongo Scripting the shell
On my production stack, I have a front-end server and a Mongo server. I would like to be able to set a cron job on the front-end server to create some logs daily.
I wrote a script that does this:
...
2
votes
1answer
89 views
Mongodb Slave replication lag
We using standard mongo setup: 2 replicas + 1 arbiter.
Both replica servers use same AWS m1.medium with RAID10 EBS.
We experiencing constantly growing replication lag on secondary replica.
I ...
0
votes
1answer
81 views
How to upgrade a single instance's size without downtime
I'm afraid there may not be a way to do this since we're not load balancing, but I'd like to know if there is any way to upgrade an EC2 EBS backed instance to a larger size without downtime.
First of ...
2
votes
1answer
60 views
MongoDB PHP EC2 Setup Configuration
I am new to web development and server set up. I am looking for some advice or a link to a tutorial on setting up a production system up. Right now, I have a server (Ubuntu, Apache, MongoDB, and ...
0
votes
0answers
79 views
Automatically creating volume partitions on system reboot
I followed this guide: http://www.mongodb.org/display/DOCS/Amazon+EC2+Quickstart to set up Mongodb.
It had me create a RAID 10 array out of the four devices on EBS. Then it had me create a physical ...
2
votes
2answers
304 views
Trying to install MongoDB - can't seem to find mongo.so
I have mongo installed on the server and running, I can query the command line. PHP and Apache are running fine as well. The problem, however, is that mongo.so isn't in the php lib directory, and I ...
3
votes
3answers
353 views
Mongo Client RedHat EL5 UT8 Support
# mongo
MongoDB shell version: 1.6.4
Fri Mar 16 11:55:46 *** warning: spider monkey build without utf8 support. consider rebuilding with utf8 support
connecting to: test
Mongo Server seems to handle ...
0
votes
2answers
108 views
How to choose NoSQL database engine?
We have a database with following specs:
30k records, 7mb in size
20 inserts/second
1000 updates/second
1000 range selects/second, by secondary index, approx 10 rows each
needs at least one ...
2
votes
1answer
209 views
Is it possible to recover MongoDB databases from .ns and .0, .1, . … files?
I have a MongoDB 2.0.4 installation on Ubuntu 12.10. Recently I had some problems connecting to the database from the outside, and figured out there was something which prevented MongoDB from starting ...
1
vote
4answers
937 views
Real-time log parsing and reporting
We have a small project we are working on part-time that runs on Nginx/MongoDB on Ubuntu 10.04 LTS Server. We'd like to be able to see reports on things like server load, requests/sec, response time, ...
1
vote
2answers
248 views
what is best multi-server configuration with OpenVPN
We have a number of Database severs running MongoDB on Debian plus a number of Application servers also on Debian. The db servers hold replicating db clusters, so they need to talk to each other. ...
2
votes
1answer
197 views
Error while compiling PHP extension
Im trying to install a php extension that is written in c and make use of mongodb c driver.
I have been trying for the last 2 days to compile and install the extension however im getting the same ...
7
votes
4answers
391 views
NoSQL databases for PHI?
Are the fast, document-based NoSQL solutions--MongoDB, Cassandra, CouchDB, etc--appropriate for PHI data? They have performance advantages compared to RDBMS for sure, but in general appears less ...
18
votes
5answers
1k 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 ...
3
votes
1answer
411 views
How do I network this Windows Failover Cluster and MongoDB Replica Set? (diagram inside)
As you can see, my two Windows Server Failover Cluster (WSFC) nodes have three network interfaces each, which connects them to three different networks :
A public network
A private network ...
2
votes
2answers
301 views
Potential problems running MongoDB on OpenSolaris & ZFS?
I've been using MongoDB on CentOS with ext4 for a few months now with no problems. I'm potentially going to be moving to Joyentcloud, and their SmartOS is based off of OpenSolaris and uses ZFS. I'm ...
0
votes
0answers
194 views
Setting up MongoDB in High Performance Computing LSF linux cluster
I am trying to run mongo in a LSF cluster computing environment where I have no admin control.
Our sysadmin installed mongodb, but it is not running. Any ideas on what should I ask the server admin ...
