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

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474 views

How to find/kill long running mongo scripts

I think I have a long running mongo script tanking my database, but I'm not sure. I was connected to the linux server via SSH and I ran the script like so: mongo my_database my_script.js It started ...
2
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1answer
157 views

Remove a secondary from a mongo replica set without triggering re-election?

I had to add a new secondary node to my replica set yesterday so that I could do maintenance on another secondary node. Now that the maintenance is complete, I'd like to remove one of the secondaries ...
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1answer
2k views

mongodb cannot connect over network

Im trying to connect to a mongodb server over a network but I cant get the connection to work. I can connect like so on the local computer on which the server is running: mongo localhost:27027 But ...
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0answers
600 views

MongoDB Performance Troubleshooting

I have a small MongoDB replica set (2.4.6) and it seems about once a week, the primary gets bogged and the load average spikes up. This app doesn't see a huge amount of traffic. It resides in EC2 ...
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1answer
55 views

How do I accept two different types of network connections using iptables

I need to setup iptables for a mongodb database server, such that it allows only two types of INPUT connections: one connection to port 27017, monogdb's default port, from our main web-app one ssh ...
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1answer
309 views

MongoDB starting gets terminating

I am installing the mongodb with the default configurations, and that gets started normally, but when I changed the dbpath value to point to different position it started giving me the exceptions, can ...
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1answer
271 views

When does the replication from primary to secondary happen in mongodb?

I have setup a 3 node replica set. Writing to primary node works but when I read with readPreference=secondary; I get values as null. When I open the local node with robomongo I see that the ...
2
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1answer
262 views

mongodb 2.4.9 is crashing on wheezy when running as root

I installed mongodb-10gen v2.4.9 on a debian Wheezy, and I'm having this really weird behavior: if I run it as root I can't get it starts: root@xx:~# /etc/init.d/mongodb stop [ ok ] Stopping ...
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1answer
248 views

MongoDB: big size of mapped memory

I'm not expert in mongo memory management but some things confuse me. I use Mongo 2.4.9 and I have a replica sets for three nodes. I have performed db.serverStatus().mem and see that size of mapped is ...
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1answer
974 views

Adding more space to VirtualBox HD (Centos Host) does not add space in the folder [closed]

I am running Centos 6.5 guest on Windows 7 Pro host (VirtualBox v4.3.6) - all 64 bit. I am trying to increase the size of Centos virtual disk (which is currently about 15G) to 90G. I did run the ...
0
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1answer
58 views

MongoDB sharding authentication with multiple keyFile's

I have configured MongoDB with sharding something like below. Shard1 Shard2 Shard3 -------- -------- ------- rs1(Pri) rs1(Sec) rs1(Sec) rs2(Sec) rs2(Pri) rs2(Sec) rs3(Sec) ...
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1answer
743 views

Why is mongod not using all available RAM?

We have an mongod instance runnning on a VM, and it doesn't seem to be using all available memory. It's page-faulting significantly more than usual, and the system's performance has been significantly ...
0
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1answer
513 views

Mongodb monitoring using mikoomi plugin of zabbix is not rendering any data

I'm using mikoomi plugin https://code.google.com/p/mikoomi/wiki/03 to monitor mongo db, in that there is shell script which is calling php script and returning 0 to zabbix and parallely writing a data ...
0
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1answer
312 views

mongodb : Can create new thread on FreeBSD?

We experienced some strange thing in our mongodb gridfs platform. The platform actually is a bi Xeon E5 (bi quad core) with 128GB of memory, running on freebsd 9 with a zfs pool dedicated for mongodb. ...
3
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1answer
2k views

php-devel failed on installation red-hat 6

I'm trying to install mongodb driver with pecl and for this i need phpize (php-devel). Does anyone know how can i resolve this issue or there is another way to install php-mongodb driver? I try as ...
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2answers
418 views

Load Balancing MongoDB

I have an application written in java with tomcat that I am ready to start scaling for production. As I understand it, i shouldn't use a load balancer with mongodb router instances as it can cause ...
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2answers
815 views

Mongo Sharding - Config Server and Mongo Authentication

I am needing to shard a database fairly soon, and am unclear on what the best practice is for enabling authentication on the mongos and config servers. I would like to have everything be secured with ...
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32 views

MySQL version of MongoDB Replica. OR MySQL MongoDB Driver

Not sure if this is the right stack exchange site for this question so if it is can you please advise which one would be best. Is there any way to either: A)Have MySQL run via a dedicated driver / ...
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1answer
750 views

MongoDB Failover Replica Set

I'm newbie to mongodb replica sets and sharding.. I am setting up IP Failover on two servers. I set up DNS failover at AWS route 53 to switch the IP address in case the main server goes down. I also ...
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1answer
617 views

How can I exclude a package from yum-cron but not from manual “yum upgrade”?

I've just gone through my servers and installed yum-cron (and then enabled with chkconfig yum-cron on since that doesn't seem to happen automatically). Now I realise that I'm running a MongoDB ...
2
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1answer
64 views

How do I find mongodb write statistics per database?

How do I get write stats per database and per collection? mongostat seems to only provide write info globally for the server. Is there a way to get more granular detail about i/o?
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1answer
48 views

Mongodb stats explanation

When doing a mongotop, on my mongo inst6allation I get the following data mydb_live.my_logs 10303ms 10302ms 1ms So the total is 10303ms, the read is 10302ms and the write is 1ms. ...
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1answer
2k views

MongoDB: unable to load driver on PHP [closed]

I'm trying to make mongo-php-driver work with PHP 5.5.7 on OS X 10.9.1 but I came to a dead end, I've tried everything I could possibly find and nothing works... Everything compiles just fine, but ...
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2answers
1k views

how can I install MongoDB as a service in centOS

I'm new to Linux, I followed this tutorial provided by the official 10gen documentation, as far I see I'm able to run mongoDB db in the console but I'd like to run it as a service. this is what I got ...
2
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1answer
28 views

Create MMS alert to monitor primary availability

Is there a way in MMS to define an alert to monitor the case where none of the servers in a cluster get promoted to primary? I tried defining the following alert: 'Alert if host of type primary is ...
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1answer
363 views

Mongodump segmentation fault when dumping all dbs

I'm running a mongodb(2.0.4) replicaset with one master and two slaves where one is hidden slave for backup. I'm using http://docs.mongodb.org/manual/core/replica-set-architecture-three-members/ When ...
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1answer
2k views

Mongodb can' t be restarted (child process failed, exited with error number 45)

I received an error "child process failed, exited with error number 45" after typing "service mongod restart" and i checked the /var/log/mongo/mongo.log as below: SERVER RESTARTED Sat Dec 21 ...
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2answers
369 views

mongod non-mapped virtual memory doubled suddenly, has not changed since

The non-mapped virtual memory stat for our mongo primary has always been constant, and we never gave it much thought before yesterday. Yesterday, a series of accidental full-collection scans from a ...
2
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2answers
781 views

MongoDB replicaSet failover incurs 1000x query response time increase

I'm testing a production MongoDB replica set failover. When I manually fail one of the instances I see an approx. 1000x (one thousand x) decrease in response times of my PHP queries. I'm on the ...
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1answer
1k views

mongo server does not start on Centos 6.4

I have a mongo server installed and when I try to start it with, always fail. OS: CentOS release 6.4 x86_64 Mongo version: 2.4.8 I have other machines working with the same versión and puppetized ...
4
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1answer
790 views

How to calculate the required EBS PIOPS for our mongo server?

We want to use provisioned IOPS EBS volume on our mongo machines, I'm a bit confused on how to calculate the number of provisioned IOPS to use. Currently we're getting an average of 25 IOPS (read + ...
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1answer
485 views

Cannot install in mongodb in ubuntu 13.04

I follow the instruction provided by mongodb. But seems package mongodb-10gen isn't existed. vagrant@m1:~$ sudo apt-get install -y mongodb-10gen Reading package lists... Done Building dependency ...
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1answer
107 views

MongoDB Balancer

So I have 2 sharded clusters with 3 servers each.My mongos is running, my config server is running and ive also added test data to 1 of the 2 shard clusters. I am having trouble getting that data to ...
0
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1answer
157 views

Spawning mongod process using sudo yields two separate mongod processes

I am seeing something weird that I can not figure out: If i run the following command sudo mongod --dbpath /db/database/ --logpath /db/logs/mongodb/mongodb.log & and then do a ps aux I see ...
0
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1answer
43 views

Login authentication vanished from MongoDB install

A few months ago I enabled password protection on my MongoDB install. Today I ran the Mongo client and forgot to use my login details. Instead of rejecting nearly everything I try to do from the ...
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1answer
871 views

So how does one use rockmongo to connect to a mongo sharded setup with replicasets?

I try to use rockmongo, to connect to our cluster. Our setup is a setup of two shards each consisting of a replicaset. I try to connect to the mongos instance and while rockmongo connects I get an ...
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1answer
398 views

Changing MongoDB Oplog size

while loading data to mongodb, I keep getting "error RS102 too stale to catch up"... After research I found that my default oplog size for a 32 bit linux machine is too small. I would like it to be ...
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1answer
48 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
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1answer
312 views

How would I template an SLS using saltstack

I'm trying to do proof of concept with Mongodb(sharding) and Id like to run a command every time I spin up a new cluster without having to add lines in all my sls files. My current init is as follows: ...
0
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1answer
1k views

Wrong php_sufix config variable in MAMP [closed]

I've just installed MAMP and I'm trying to install the Mongo extension via pecl but I'm getting an error: jonesy:bin Billy$ sudo pecl install mongo downloading mongo-1.4.4.tgz ... Starting to ...
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1answer
210 views

Large, high performance object or key/value store for HTTP serving on Linux

I have a service that serves images to end users at a very high rate using plain HTTP. The images vary between 4 and 64kbytes, and there are 1.300.000.000 of them in total. The dataset is about 30TiB ...
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0answers
486 views

CentOS 6 - Mongodb - Invalid access at address xxxx from thread: initandlisten

For starts I looked everywhere online for this, a lot of people have the problem, no one has a working solution. I've installed mongodb using yum and their instructions provided at ...
4
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1answer
3k 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 ...
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1answer
114 views

MongoDB cloneCollection between Azure hosted CentOS servers times out at 2 hours

I'm trying to clone a MongoDB collection from CentOS server A to CentOS server B. Both are running 2.4.6. The copy works great until exaxctly 2 hours, at which point I get a 9001 socket exception: ...
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2answers
24k views

/etc/security/limits.conf soft nproc limit appears to be ignored

My MongoDB database was running into problems under load, with the following errors spamming the logs: [initandlisten] pthread_create failed: errno:11 Resource temporarily unavailable [initandlisten] ...
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2answers
423 views

Multiple Amazon EC2 With Load Balancing And MongoDB

I have an Amazon EC2 server where we run a webapp and MongoDB. We want add a second EC2 server and a Load Balancing to the same region. Load Balancing will redirect all web requests (80 and 443) to ...
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2answers
1k views

MongoDB on EC2 - Could not stat /dev/xdf — No such file or directory

I'm following a tutorial for setting up MongoDB on EC2 and I got stuck at the following part: $ sudo mkfs.ext4 /dev/xdf mke2fs 1.42.3 (14-May-2012) Could not stat /dev/xdf --- No such file or ...
2
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1answer
139 views

MongoDB Sharding Config and MongoS Storage

In doing this year's budgeting, I need to estimate the capacity needs for next year. We are planning on needing to shard our MongoDB Replica Set out to 4-shards, but I have the disk capacity needs ...
6
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2answers
3k views

what does locked % in mongostat mean?

When running mongostat to look at our mongo database, I'll frequently see the locked % number jump up, sometimes as high as 80%. Here's a few example rows: insert query update delete getmore ...
0
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1answer
187 views

What's special in restoring a DB in a MongoDB sharded cluster?

I'd like to migrate a DB from a replica set to another which belongs to a sharded cluster. Till now, this cluster has got only 1 shard, and no collection or database is really sharded. I mongodumped ...