/usr/share/lxc/config/fedora.common.conf is in lxc-templates 3.0.0-0ubuntu1.
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 14 15 16 17 18 19 20 21 | # This derives from the global common config
lxc.include = /usr/share/lxc/config/common.conf
# Capabilities
# Uncomment these if you don't run anything that needs the capability, and
# would like the container to run with less privilege.
#
# Dropping sys_admin disables container root from doing a lot of things
# that could be bad like re-mounting lxc fstab entries rw for example,
# but also disables some useful things like being able to nfs mount, and
# things that are already namespaced with ns_capable() kernel checks, like
# hostname(1).
# lxc.cap.drop = sys_admin
# lxc.cap.drop = net_raw # breaks dhcp/ping
# lxc.cap.drop = setgid # breaks login (initgroups/setgroups)
# lxc.cap.drop = dac_read_search # breaks login (pam unix_chkpwd)
# lxc.cap.drop = setuid # breaks sshd,nfs statd
# lxc.cap.drop = audit_control # breaks sshd (set_loginuid failed)
# lxc.cap.drop = audit_write
# lxc.cap.drop = setpcap # big big login delays in Fedora 20 systemd
lxc.cap.drop = setfcap sys_nice sys_pacct sys_rawio
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