Bug 856487

scalabe ruby1.9 app can embed mongodb successfully,but can't use it

step:
1.create a scalable ruby-1.9 app
2.embed mongodb-2.0 for it
[wsun@localhost dev]$ rhc app cartridge add -a rack9scaletest -c mongodb-2.0
Password: 


RESULT:

MongoDB 2.0 database added.  Please make note of these credentials:

       Root User: admin
   Root Password: cf-RtCkhuckQ
   Database Name: rack9scaletest

Connection URL: mongodb://60f9dfe0e1-wsundev912.dev.rhcloud.com:35556/
MongoDB gear-local connection URL: mongodb://127.0.252.129:35556/

3.ssh 
4.mongo
[rack9scaletest-wsundev912.dev.rhcloud.com ~]\> mongo
/usr/bin/mongo: symbol lookup error: /usr/bin/mongo: undefined symbol: js_DateClass

The same issue exits in the website , both the ruby 1.9 and rubyonrails app cannot  embed mongodb in the website.

The problem here appears to be that ruby-1.9's configure script creates an entry for LD_LIBRARY_PATH in the .env directory.  This is sourced by the mongodb control script and disrupts mongodb by causing the wrong libjs to be loaded.

Paul and Dan working on this and have identified root cause

Temporary fix for mongo with pull request:
  https://github.com/openshift/crankcase/pull/478

Waiting on merge. 

Longer term need a way to address sclized versions.

on devenv_2172 ,can add mongodb-2.0 for ruby 1.9 app,but could not connection mongo

info:
[rack9test-wsundev1913.dev.rhcloud.com ~]\> mongo
/usr/bin/mongo: symbol lookup error: /usr/bin/mongo: undefined symbol: js_DateClass

1.create ruby 1.9 app
2.add mongodb
[sunwei@dhcp-8-229 dev]$ rhc app cartridge add -a rack9test -c mongodb-2.0 
Password: 


RESULT:

MongoDB 2.0 database added.  Please make note of these credentials:

       Root User: admin
   Root Password: xSChdRyH2e_V
   Database Name: rack9test

Connection URL: mongodb://127.0.250.129:27017/

You can manage your new MongoDB by also embedding rockmongo-1.1

3.ssh app
mongo
[rack9test-wsundev1913.dev.rhcloud.com ~]\> mongo
/usr/bin/mongo: symbol lookup error: /usr/bin/mongo: undefined symbol: js_DateClass

*** Bug 856956 has been marked as a duplicate of this bug. ***

Workaround: is to unset LD_LIBRARY_PATH on rhcsh. The issue is the new version of mongo uses libjs.so which is getting pulled from the ruby193 scl. 

I'll fix the mongo function in rhcsh. But you can still hit this if you run /usr/bin/mongo -- the fix for that would be a longer term solution to address sclized versions and provide a mechanism to run the binaries therein.

Waiting on pull request: 
    https://github.com/openshift/li/pull/367

Please note that the workaround above as it is required if accessing other mongo utilities. The issue is the ruby193 scl is needed for running irb/ruby -- users of a ruby-1.9 app would expect an equivalent functionality (ruby version) matching the app.

verified on devenv_2176

step:
1.create a ruby1.9 app
2. add mongodb-2.0 for app
3.ssh app
4. mongo

result:

[rack9test-wsundev914.dev.rhcloud.com ~]\> mongo
MongoDB shell version: 2.0.7
connecting to: 127.0.250.129:27017/admin
>


[rack9scaletest-wsundev914.dev.rhcloud.com ~]\> mongo
MongoDB shell version: 2.0.7
connecting to: 268ce17e05-wsundev914.dev.rhcloud.com:35536/admin
>

But it doesn't work on stg(devenv-stage_235)

[rack9test-wsunstg914.stg.rhcloud.com ~]\> mongo
/usr/bin/mongo: symbol lookup error: /usr/bin/mongo: undefined symbol: js_DateClass

It doesn't work on devenv-stage_236

[rack9test-wsundevs914.dev.rhcloud.com ~]\> mongo
/usr/bin/mongo: symbol lookup error: /usr/bin/mongo: undefined symbol: js_DateClass

It doesn't work on stage(devenv-stage_237)

[rack9test-wsunstg914.stg.rhcloud.com ~]\> mongo
/usr/bin/mongo: symbol lookup error: /usr/bin/mongo: undefined symbol: js_DateClass

It still doesn't work on stage(devenv-stage_237),so I re-open this bug.

step:
1. for non-scaling ruby1.9 app

Result:

[rack9test-wsunstg917.stg.rhcloud.com ~]\> mongo
/usr/bin/mongo: symbol lookup error: /usr/bin/mongo: undefined symbol: js_DateClass

info:

Application Info
================
rack9test
    Framework: ruby-1.9
     Creation: 2012-09-17T01:50:37-04:00
         UUID: 4d3b1db7af0f42699b337f60fa9478e8
      Git URL: ssh://4d3b1db7af0f42699b337f60fa9478e8.rhcloud.com/~/git/rack9test.git/
   Public URL: http://rack9test-wsunstg917.stg.rhcloud.com/

 Embedded: 
      mongodb-2.0 - Connection URL: mongodb://127.6.95.129:27017/

2.for scaling ruby1.9 app

Result:
[rack9scaletest-wsundevstg917.dev.rhcloud.com ~]\> mongo
/usr/bin/mongo: symbol lookup error: /usr/bin/mongo: undefined symbol: js_DateClass

info:
Application Info
================
rack9scaletest
    Framework: ruby-1.9
     Creation: 2012-09-17T02:07:00-04:00
         UUID: 44fc14e402914dada18616ce95d66949
      Git URL: ssh://44fc14e402914dada18616ce95d66949.rhcloud.com/~/git/rack9scaletest.git/
   Public URL: http://rack9scaletest-wsundevstg917.dev.rhcloud.com/

 Embedded: 
      haproxy-1.4
      mongodb-2.0 - Connection URL: mongodb://06636e3d6d-wsundevstg917.dev.rhcloud.com:35616/

As mentioned, there's a workaround for stage. And it doesn't address all cases -- see comment #9.

I created a pull request for stage -- https://github.com/openshift/li/pull/378

Spoke to admiller and he will merge it if it is really needed. Assigning to admiller.
Adam, please close/assign to QA as we deem neccessary.  
Thanks.

tested this with the workaround on devenv-stage_237

refer comment 9 for full fix for this bug.


1. Create ruby 1.9 app
2. embed mongo
3. log in to the apps gear and 'unset LD_LIBRARY_PATH'
[rb-cgoledfvv.dev.rhcloud.com ~]\> mongo
MongoDB shell version: 2.0.7
connecting to: 127.0.250.129:27017/admin

After discussions it was decided Ram's patch was the most logical course of action right now. Patch was merged, package was built. 

Package rhc-node-0.98.7-1.el6_3 should be available via devenv-stage_238

Correction, it would appear there was a race condition in the build for 238 that caused apache to not start and that caused the validation to fail, which failed the ami build. This will be available in devenv-stage_239

verified on devenv-stage_239

step:
1.create ruby1.9 app
2.add mongodb-2.0
3.log in to the apps gear

Result:
1.for non-scaling app
[rack9test-wsundevstg918.dev.rhcloud.com ~]\> mongo
MongoDB shell version: 2.0.7
connecting to: 127.0.250.129:27017/admin
> 

2.for scaling app
[rack9scaletest-wsundevstg918.dev.rhcloud.com ~]\> mongo
MongoDB shell version: 2.0.7
connecting to: 98a8ac89ff-wsundevstg918.dev.rhcloud.com:35551/admin
>

verified on stage(devenv-stage_239)

Result:

1.non-scaling app
[ruby9-bmengstg918.stg.rhcloud.com ~]\> mongo
MongoDB shell version: 2.0.7
connecting to: 127.8.165.1:27017/admin
> 

2.scaling app
[ruby9s-bmengstg918.stg.rhcloud.com ~]\> mongo
MongoDB shell version: 2.0.7
connecting to: 1c1a2098c1-bmengstg918.stg.rhcloud.com:50441/admin
>