Hi,

our server received release 21.01 - a lot of cleanup and repair has been done, highlights are:

• all RZ1 systems data available via Graphana Server Metrics
• reworked postgresql memory tuning, prevent overcommiting
• unified docker configuration of 38 hosts
• unified mail relaying for system mails without using mailgw servers
• persistent storage for system boot logs
• automated removal of old kernel installations
• htop: added I/O statistics to standard display
• 25 missing systems added to ansible inventory and maintenance

Details of Release 21.01 (2021-04-16):

Added

• zstd package (tools) - fast compressor replacing pigz
• implemented persistent storage for journald boot log
• postfix: added role to base server configuration, one user login for all
  servers
• system: kernel number install limit and automatic cleanup
• system: yum clean all for centos systems implemented as playbook
  “update-packages.yml”
• tools: global htoprc implemented, display IO read/write and IOWait
• nagios: software and basic-config rollout without vmhost checks
• backuppc: rollout completed, adapted server.yml for taking backup targets
  from from backup groups
• collectd / Graphana setup for all hosts (base role)

Changes

• Ipv6 disabled in /etc/hosts - clean mail system startup
• ntp: preliminary fix for ntpdate setup failure: replaced ntpdate for centos8 by systemd service
• postgresql: config calculation reworked, no overbooking = failed state when
  there is not anough RAM available for given constraints
• docker role: unified docker configuration
• facl module: added directory creation in case file does not exist
• finished httpd setup, split out php
• finished collectd setup
• apcupsd: changed ups inventory handling from host_vars to group_vars
• ansible: removed redis ansible cache due to errors with peristent storage
• ansible: implemented ansible-linter in docker-compose link setup
• ansible: split out inventory from ansible main repository to have independent
  master branch
• ansible: split out docker-compose project into own git repository, improved
  multi-user operation
• overcommit_memory=2 for postgresql and mariadb database servers