could not find package

[Kevin Fox]

When passing through the package to be installed, there is a failure:

PkgNotFoundError: Could not find pkg [umariadb-server]

Its from trove/guestagent/pkg.py:147

manually yum install mariadb-server works fine.

Looks a little like it may be mangling the name due to a unicode string?

guestagent is running within sl7 python 2.7 on x86_64.

This is with trunk.

[Denis M. (dmakogon)]

Trove doesn't support MariaDB.

[Kevin Fox (kevpn)]

I inderstand now that mariadb is unsupported. That being said, this bug is simply with troves ability to install a package. What its named should be irrelevant. Its specified by the user. If I were to try with mongodb, I wouldnt hit the same bug?

[Denis M. (dmakogon)]

Not sure, but it seems that you've hit this bug because of incorrect datastore version registration. I guess you need to check out your data at the Troves backend. Trove is pretty sensetive to malformed data, especially data that is being passed by admin to trove-manage utility.

Take a look at https://github.com/openstack/trove-integration/blob/master/scripts/redstack#L318-L322

[Amrith Kumar (amrith)]

Kevin Fox, please provide more information about what (exactly) you were doing.

[Kevin Fox (kevpn)]

Ok. I created a datastore mysql and a datastore version mysql-5.5. I was trying to use the 'mariadb-server' package as that is what rhel7 provides.

MariaDB [trove]> select * from datastore_versions;
+--------------------------------------+--------------------------------------+------------------------+--------------------------------------+----------------+--------+---------+
| id | datastore_id | name | image_id | packages | active | manager |
+--------------------------------------+--------------------------------------+------------------------+--------------------------------------+----------------+--------+---------+
| 20000000-0000-0000-0000-000000000002 | 10000000-0000-0000-0000-000000000001 | Unknown Legacy Version | 00000000-0000-0000-0000-000000000000 | | 0 | mysql |
| 268b92ff-be9b-4383-91d8-d7a7bad9e316 | bd8cf4b9-5487-4437-bec5-463bea445916 | mysql-5.5 | 53395e3d-1922-4aa4-8ece-a22ff70ee3ea | mariadb-server | 1 | mysql |
+--------------------------------------+--------------------------------------+------------------------+--------------------------------------+----------------+--------+---------+

see the field packages = 'mariadb-server'

In the trace I got out of the guestagent, it was failing because it could not find '[umariadb-server]' Looking at the string match that comes out there, I'm guessing the package name was mangled either when it was fetched out of the db, or when it was sent to yum. the '[u' and ']' thing are odd looking.

If I pre-install the mariadb-server package into the image before launching that instance type, then it all works properly. so something's wrong with either my database entry or the code that tries to install the package.

[Denis M. (dmakogon)]

Thanks for explanation. Looks like this issue appears to take place while deserializing message for prepare call. It seems like we might do force convertion of 'packages'.

Can you add logging at the beggining of 'prepare' method that writes to log file vars() ?

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/129216

[OpenStack Infra (hudson-openstack)]

Change abandoned by Sushil Kumar (<email address hidden>) on branch: master
Review: https://review.openstack.org/129216
Reason: issue resolved by https://review.openstack.org/#/c/129523/