mysql-client-5.6 recommends mysql-wsrep-common-5.6

[Alexander Tsamutali]

Please read https://bugs.launchpad.net/fuel/+bug/1475288 first.

Now I found that mysql-wsrep-common-5.6 is installed by recommendation of mysql-client-5.6. My question is: does mysql-client really use mysql-wsrep-common files in some setups? If not - let's remove this recommendation.

[Aleksander Mogylchenko (amogylchenko)]

mysql-wsrep package is a custom build of MySQL-server, with patches for Galera (which are not in upstream):
https://review.fuel-infra.org/gitweb?p=packages/trusty/mysql-wsrep-5.6.git;a=blob;f=debian/control;h=ad3d7b68cb8015f62fecf2cbb8bec03859ce25c2;hb=bf5a03beff445b88d3ec6f9c1c1d16741ae60036

It is not correct to mix them on the same machine.

Build team, please recheck (taken from LP #1475288):
http://osci-jenkins.srt.mirantis.net:8080/job/7.0.mos-new.install-deb/893/consoleFull

[Alexander Tsamutali (astsmtl)]

There is no intention to mix those packages in test. Check this script:
https://review.fuel-infra.org/gitweb?p=openstack-build/ceilometer-build.git;a=blob;f=tests/runtests.sh;h=29f8093f36dcd17ddfa3a9ef29b883763e4de728;hb=refs/heads/openstack-ci/fuel-7.0/2015.1.0 It just happens that installation of mysql-client-5.6 also installs mysql-wsrep-common-5.6 and breaks configuration of mysql-server.

[Aleksander Mogylchenko (amogylchenko)]

They are already mixed, and that is exactly the problem:
http://172.18.160.74/osci/mos/7.0/cluster/base/trusty/pool/main/m/mysql-wsrep-5.6/

You might also check the link I provided. It shows that both mysql-client-5.6 also installs mysql-wsrep-common-5.6 are build from the same source package.

[Alexander Tsamutali (astsmtl)]

I can't get your point. We already found that it's incorrect to mix these packages on the same machine. But package management system doesn't protect us from doing so, instead it encourages broken setup with "Recommends".

[Aleksander Mogylchenko (amogylchenko)]

Both packages (mysql-client-5.6 also installs mysql-wsrep-common-5.6) were build from the same source package. That is why mysql-client recommends installing mysql-wsrep-common (check my previous comments for exact links). It is not the job of package management system to correct broken packages, but the job of build team - either to correct broken package, or fix repositories so that our packages are selected in all cases and the situation with mixed packages (upstream and ours) are avoided.

[Alexander Tsamutali (astsmtl)]

IIUC "Maintainer: MOS Linux team <email address hidden>" means that MOS Linux team _owns_ this package and thus must fix problems related to this package.

Do you request help from Build team in this particular case?

[Alexei Sheplyakov (asheplyakov)]

> Please read https://bugs.launchpad.net/fuel/+bug/1475288 first.

The test [1] is broken and should either

a) install mysql-server-wsrep-5.6 for tests,
b) make sure the upstream mysql packages get installed, i.e. put something like this into /etc/apt/preferences:

Package: mysql-client-5.6
Pin: release o=Ubuntu
Pin-Priority: 1101

[1] https://review.fuel-infra.org/#/c/9407/6/tests/runtests.sh@135

[Alexei Sheplyakov (asheplyakov)]

It's the ceilometer tests which are broken => reassigning to ceilometer team

[Alexander Tsamutali (astsmtl)]

I can't see any workarounds in tests and everything works. It means that someone fixed something. :)