during the installation of Dynatrace Managed cluster node, the /etc/hosts is modified (added hostname for the loopback IP address). This, albeit mentioned in the documentation, might break other services on the host. In this case, we need to have the hostname in /etc/hosts in the record for the primary IP address, not for the loopback address.
I see there is an option to disable that behaviour in /etc/dynatrace.conf:
HOSTS_ALTERING_ENABLED = true
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