Jira upgrade 8.19.0 cannot connect to mysql 5.7.35

I have confluence and jira running on a standalone server.

I just upgraded confluence - no problems. It runs connected to mysql and is up as we speak on the latest version.

I just updated jira but it says it cannot connect to the database:

Database: We've found an error in MySQL supported version! The database type in your dbconfig.xml is set up to MySQL 5.7 and your MySQL version is different. Consider using MySQL 5.7 database type instead See our documentation for more information on changing database type.

But the database config or database version never changed.

I updated the .jar from mysql-connector-java-5.1.48 to:

mysql-connector-java-5.1.48-bin.jar

But still wont connect.

The dbconfig looks like:

<?xml version="1.0" encoding="UTF-8"?>

<jira-database-config>
  <name>defaultDS</name>
  <delegator-name>default</delegator-name>
  <database-type>mysql57</database-type>
  <jdbc-datasource>
    <url>jdbc:mysql://dbserver:3306/jiradb?useUnicode=true&amp;characterEncoding=UTF8&amp;sessionVariables=default_storage_engine=InnoDB</url>
    <driver-class>com.mysql.jdbc.Driver</driver-class>
    <username>jiradb</username>
    <password>somepassword</password>
    <pool-min-size>20</pool-min-size>
    <pool-max-size>20</pool-max-size>
    <pool-max-wait>30000</pool-max-wait>
    <validation-query>select 1</validation-query>
    <min-evictable-idle-time-millis>60000</min-evictable-idle-time-millis>
    <time-between-eviction-runs-millis>300000</time-between-eviction-runs-millis>
    <pool-max-idle>20</pool-max-idle>
    <pool-remove-abandoned>true</pool-remove-abandoned>
    <pool-remove-abandoned-timeout>300</pool-remove-abandoned-timeout>
    <pool-test-on-borrow>false</pool-test-on-borrow>
    <pool-test-while-idle>true</pool-test-while-idle>
    <validation-query-timeout>3</validation-query-timeout>
  </jdbc-datasource>
</jira-database-config>

Without rolling back everything I don't know what to do, has anyone else hit similar issues?

I have rolled back the entire server (complete with database) but JIRA still will not start :/ does anyone have any ideas?

I had the same problem on one of my three instances after upgrading JIRA to version 8.19.0. I have a containerized deployment, all three instances use the same JIRA image and the same MySQL image, nevertheless only one instance was affected.

For me the solution was to add the allowPublicKeyRetrieval=true parameter to the URL.

<url>jdbc:mysql://mysql:3306/jira?useUnicode=true&amp;characterEncoding=utf8&amp;allowPublicKeyRetrieval=true&amp;useSSL=false&amp;sessionVariables=default_storage_engine=InnoDB</url>