ERR: Execution of '/usr/bin/mongo --quiet --eval db.getMongo().getDBNames()' returned 1

[Anastasia Palkina]

"build_id": "2014-04-22_01-00-26",
"mirantis": "yes",
"build_number": "121",
"nailgun_sha": "978d70312250b72af9d29390f13ce7df8907c05d",
"production": "prod",
"ostf_sha": "7d0ea20e1c450a5f571d91bb03141b12c301184b",
"fuelmain_sha": "8a9c73e7deaa8e6d8cf37deaa4f8c3314a7e0dbc",
"astute_sha": "421a9f28080f8d10b4d006ce06af8568cce40b9b",
"release": "5.0",
"fuellib_sha": "28d82c796081978ef937853dafbe489a251d8103"

1. Create new environment (CentOS, simple mode)
2. Choose Ceilometer installation
3. Add controller+mongo and mongo node
4. Start deployment. It has failed.
5. There are error in puppet logs on single mongo role

(/Stage[main]/Openstack::Mongo/Mongodb::Db[ceilometer]/Mongodb_database[ceilometer]) Could not evaluate: Execution of '/usr/bin/mongo --quiet --eval db.getMongo().getDBNames()' returned 1: Tue Apr 22 09:34:40.045 Error: couldn't connect to server 127.0.0.1:27017 at src/mongo/shell/mongo.js:145

[Mike Scherbakov (mihgen)]

I consider this as High priority bug, as it doesn't stop other features from being QAed.

[Max Mazur (mmaxur)]

we does not support multiple mongodb nodes in simple cluster mode.

Do we need add such feature? Otherwise it looks like UI bug.

[Anastasia Palkina (apalkina)]

Error on SINGLE mongo node, not multi-node.

[Mike Scherbakov (mihgen)]

I don't see any reason why we would not want to have multiple mongodb in simple mode.

BTW, we want to get rid of simple mode, and have only HA. Though with an ability to scale up from one HA node to many. So it's mandatory to have support of such in MongoDB scaling as well.

For now, it looks to me as simple backports of some configs from cluster_ha.pp to simple manifest, to support more than one mongo node in simple deployment mode.

I'm also wondering on requirement for having odd number of mongodb nodes. Looks like we don't have any UI limitation on this. Should we introduce one and enforce user to have only odd number of mongodb nodes?

[Bogdan Dobrelya (bogdando)]

...As well as we don't have now a limitation in UI for deploying HA cluster on even numbers of controllers which cannot form a quorum (i.e 2 controllers should not be allowed to deploy, but 1 and 3 - is OK). Funny is what we have a contrary for mongo roles now.

[Dmitry Ilyin (idv1985)]

Duplicate if #1308988