/etc/nova/rootwrap.d/api-metadata.filters is in nova-api-metadata 2:13.0.0-0ubuntu2.
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 9 10 11 12 13 | # nova-rootwrap command filters for api-metadata nodes
# This is needed on nova-api hosts running with "metadata" in enabled_apis
# or when running nova-api-metadata
# This file should be owned by (and only-writeable by) the root user
[Filters]
# nova/network/linux_net.py: 'ip[6]tables-save' % (cmd, '-t', ...
iptables-save: CommandFilter, iptables-save, root
ip6tables-save: CommandFilter, ip6tables-save, root
# nova/network/linux_net.py: 'ip[6]tables-restore' % (cmd,)
iptables-restore: CommandFilter, iptables-restore, root
ip6tables-restore: CommandFilter, ip6tables-restore, root
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