I use Ubuntu 20.04 LTS + MySQL 8.0.20 + ODBC from recommended link https://dev.mysql.com/downloads/connector/odbc/5.2.html - but after selecting Ubuntu Linux 20.04 there is only one version - mysql-connector-odbc_8.0.20-1ubuntu20.04_amd64.deb
In april I've upgraded Ubuntu from 18.04 LTS to 20.04 LTS. Works perfectly with EMCS 7.1.503.0. Couple days ago I wanted to upgrade EMCS to 7.2.2233.0 via WebConsole. But upgrade was not sucessfull. From logs I read that I have no SUPER right for DB user. I've given this right but EMCS just not worked. I can't repeat update via WebConsole. I downloaded EMCS installer from Web, but instalation failed - with error sth like "corupted DB". I deleted DB and restored from backup and once again - run installer. Instalation was successfull, but EMCS service failed. Port 2222 was not open, few seconds after start eraserver - server crashed.
After many different tries, I wrote to polish Eset support (Dagma). I've got simple answer (without any log analysis) - something like "you use unsupported Ubuntu version. Try on supported version and contact us if it will not work".
Today I do clean install EMCS (without certs create). Install was successfull but... EMCS stil crashes few seconds after start. I can send you full logs and crashdumps, but I prefer not to publish logs on public forum.
Sorry for my English. Regards
Oups! I have deleted some earlier logs (before clean install), but I send these logs to polish Eset support - ticket number #0675574.