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Thx for reply

As of mysql compatibility, could you give me a 'for instance' to detail like 'which part of ussuri code must need mysql v10.3.x, if we use mysql v10.1, the code will not run correctly '.

Prometheus exporter was depended on rabbitmq 3.8, so if vendor distribution doesn’t contain Prometheus,  rabbitmq v3.7.10 would be ok or not ?

I suggest the community that it add a doc page about why openstack version chooses the common component like 'mq/db/memcache' version.

When openstack version is released , in addition to release note is published , community releases this doc page to statement the reason of the common component version choice.

thx



Sheldon Hu    |  胡玉鹏

CBRD  |  云计算与大数据研发部

T: 18663761785

E: huyp at inspur.com



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-----邮件原件-----
发件人: Radosław Piliszek [mailto:radoslaw.piliszek at gmail.com] 
发送时间: 2020年9月4日 18:16
收件人: Brin Zhang(张百林) <zhangbailin at inspur.com>
抄送: openstack-discuss at lists.openstack.org; Sheldon Hu(胡玉鹏) <huyp at inspur.com>
主题: Re: [mq][mariadb] What kind of reasons are considered when choosing the mq/mariadb version

Hi Brin,

most of the time the distribution dictates the new version.
However, sometimes it is forced due to issues with new versions of OpenStack and old versions of these dependencies (for example MariaDB
10.1 would fail to work with newer releases due to lack of MySQL compatibility).
Newer versions usually mean new features that are useful for end users. In this case RabbitMQ 3.8 shines with its new Prometheus exporter.
We generally try to avoid needless updates but still stay current enough to receive proper support from upstreams and satisfy the users.

-yoctozepto

On Fri, Sep 4, 2020 at 10:54 AM Brin Zhang(张百林) <zhangbailin at inspur.com> wrote:
>
> Hi all
>
>
>
> We are using kolla to build the OpenStack, use kolla-ansible to deploy
>
> rabbitmq is v3.7.10, mariadb is v10.1.x when building Rocky release
>
> rabbitmq is v3.8.5, mariadb is v10.3.x when building Ussuri release
>
>
>
> what kind of reasons are considered as rabbitmq version is changed from v3.7.10 to v3.8.5 ?
>
> what kind of reasons are considered as mariadb version is changed from v10.1.x to v10.3.x ?
>
>
>
> If you can provide an explanation, or key explanation, we would be very grateful.
>
> Thanks.
>
>
>
> brinzhang
>
>
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