/usr/share/icinga2/pki/vars is in icinga2-common 2.1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | # Icinga 2 default CA vars
export REQ_COUNTRY_NAME="AU"
export REQ_STATE="Some-State"
export REQ_ORGANISATION="Internet Widgits Pty Ltd"
export REQ_ORG_UNIT="Monitoring"
export REQ_COMMON_NAME="Icinga CA"
export REQ_DAYS="3650"
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