mongodb error

[thoai.h...@census.gov]

Hello,

 

I installed mongodb (linux 64-bit version 2.6.7) - MongoDB seems to work fine.  I installed mongodb driver on Node v0.10.36 via npm install mongodb.

 

I ran mongodb in /data/db directory.

 

I got an error message: "[Error: /data/projects/nodejs/mode_modules/mongodb/node_modules/bson/build/Release/bson.node: invalid ELF header] js-bson: Failed to load c++ bson extension, using pure JS version" when trying to execute the below one line of code via running  /data/projects/nodejs/tc4_mongodb_server.js:

 

var mongo = require('mongodb').MongoClient;

 

Please provide any suggestion(s) to fix this problem?

 

Thanks,

>>Thoai

[Aria Stewart]

You might try running `npm rebuild`, and watch for any compilation errors during that. The error should not be fatal, since there's an all-javascript backup to the c++ bson module, but something's gone awry there.

Make sure your c++ compiler works too.

Aria

[thoai.h...@census.gov]

I ran npm rebuild.  Things seem to work without any fatal errors.  I run the previous line of code again - I still get the

same error.

[Aria Stewart]

> On Feb 4, 2015, at 11:30 AM, thoai.h...@census.gov wrote:
>
> I ran npm rebuild. Things seem to work without any fatal errors. I run the previous line of code again - I still get the
> same error.
>

Yeah -- they won't be fatal, because bson has the js fallback, so they treat the "did C++ compile?" as a nice-to-have not a must. Want to gist or post the whole rebuild log? There might be clues there.

Aria

[thoai.h...@census.gov]

Any way, the error message is just the warning.  Currently, I plan to only use Javascript -  I may need to use C++ later, but not now.   I added more

code to connect to the mongodb and it seems to get through with no errors.  I will continue my application development ....  I will try to inserts records

to the db...hopefully things will work.

 

>>Thoai 

[Daniel Alberto Martinez]

Hi Thoai, 

If your web application is a common CRUD  you can test this module: https://www.npmjs.com/package/mpill

That module helps you to encapsulate the connect and db close and you do not need to be worried about db connections.