MariaDB update failed

Hi, I do not think somebody can help you on the forum. There are too many reasons and the problem must be checked by a system administrator.

Ref.: https://www.mysterydata.com/update-upgrade-to-mariadb-10-4-on-vestacp-cwp-centos-7/

Go thru the steps again, make sure NOT to miss one or else it will mess everything up.
Especially Step 2. You want to follow the 2nd step labeled "For MariaDB 10.0/10.1/10.2/10.3 :", and NOT the 1st one.

I've used this guide on multiple servers, never had a problem.
If it still doesn't work. I agree with Igor, you'll have to have CWP support look at it.

CentOS 8 is a little easier, it has 10.4 by default.
You create the repo for 10.5, run dnf update and BAM that's it.

Upgrade successful

But my email smtp giving error when sending email

SMTP 451. Failed to add recipient.

Server configuration problem.

Please help

Here is the solution I found:

First step to save your database (I didn't do it!)

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mysqldump --all-databases > /home/fullbackup.sql.gz
Uninstall MariaDB client:

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yum remove MariaDB-server MariaDB-client -y
Now install MariaDB, it will automatically install MariaDB 10.2 (10.2.36):

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yum install MariaDB-server MariaDB-client -y
Then to finish:

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mysql_upgrade