I was pleasantly surprised at how easy it was to install Duply and Duplicity to enable S3 backups on my CentOS cPanel box. This is a bit rushed, so instructions are brief. If you notice anything wrong, please let me know in the comments and I fix it up.
On one of our RHEL5 servers running Ensim, we noticed after the last big update of RHEL using 'yum update', that MailScanner was capped out, using tons of our CPU power. In the past when this happens I usually find it is ClamAV acting up. However, we were using on this server a free version of f-prot. I took a chance and purchased the latest greatest mail server version of f-prot and installed it. Bingo, the problem went away.
This post covers the issues I experienced when upgrading a remote VM on Ubuntu 14.04 to 18.04. Some fine folks online say "Don't do it" and others say "I just upgraded 100 VMs without any issue". If you are going to upgrade, ensure you have a good snapshot and backups. Upgrading is fraught with danger.