Sorry, edit is limited to 15 min. See first problem here (part of log):
Need Obsidian, because fail2ban fails on IPv6 on Onyx, because 0.9.6 is taken from stone age.
PLESK_18_0_27-thirdparty | 2.9 kB 00:00
SITEBUILDER_17_8_12-dist | 2.9 kB 00:00
SITEBUILDER_17_8_12-thirdparty | 2.9 kB 00:00
6278 packages excluded due to repository priority protections
Attempt to remove 'plesk-skins' to resolve conflict has succeeded
Attempt to remove 'log4cpp-plesk' to resolve conflict has succeeded
Exception: Failed to solve dependencies:
plesk-backup-utilities conflicts with plesk-service-node-utilities-17.8.11-cos6.build1708190227.21.x86_64
plesk-backup-utilities-18.0-2.centos.6+p18.0.27.1+t200522.1215.x86_64 requires psa >= 17.9
plesk-core-utilities-18.0-2.centos.6+p18.0.27.1+t200522.1215.x86_64 requires plesk-mysql-server >= 18.0
plesk-control-panel conflicts with plesk-core-17.8.11-cos6.build1708180301.19.x86_64
plesk-web-socket-18.0-2.centos.6+p18.0.26.0+t200327.1757.x86_64 requires plesk-core >= 18.0
plesk-web-socket-18.0-2.centos.6+p18.0.26.0+t200327.1757.x86_64 requires psa >= 18.0.17