Hi,
I have 1 central and 3 pollers, all with CentOS 7.9 and Centreon 22.04.7
I’m preparing the migration from CentOS 7.9 to AlmaLinux 8.7, same centreon version for now..
For that, I will begin with poller upgrades.
I have installed the first new alma poller ( OS+centreon 22.04 ). The poller is not registered at the moment. I always have a snapshot just in case.
I have installed all centreon-plugins, except centreon-plugin-Applications-Databases-Mongodb
If I want install this plugin, it will downgrade the dependancy perl-Exporter-Tiny, use by all others plugins.
![](https://uploads-eu-west-1.insided.com/centreon-en/attachment/c518f8cf-77f0-4120-a0bb-241969642831.png)
The version installed with centreon is:
![](https://uploads-eu-west-1.insided.com/centreon-en/attachment/1c9fddb0-b49d-40ce-bdc3-f196f8b1ed19.png)
When I test to install mongdb plugin, and downgrade the dependancy, I have several errors when I try to do a
dnf update
![](https://uploads-eu-west-1.insided.com/centreon-en/attachment/4882b24e-85c4-44cb-9eb1-71bc1f8386d2.png)
dnf update --nobest
![](https://uploads-eu-west-1.insided.com/centreon-en/attachment/289c16be-1dce-4990-9d29-ca8df61cb841.png)
dnf update --best --allowerasing
![](https://uploads-eu-west-1.insided.com/centreon-en/attachment/a78186d4-dac6-480b-9dd2-63f6de927459.png)
dnf update --nobest --allowerasing
![](https://uploads-eu-west-1.insided.com/centreon-en/attachment/0537dbbe-59ab-4c91-8da0-a99de27a97e6.png)
The only thing that works is to exclude the package
dnf update --exclude=perl-Exporter-Tiny*
But I’m worried, why centreon installs a more recent version, then want to downgrade it for only 1 plugin ?
Do I risk problems with the functionning of tre platorm with the downgrade version of this package ?
I don’t have this problem on CentOS 7, and I prefer to not have to exclude this package each time I want to do an update.
Thanks