I see the same, plus one more, apparmor denials on a fresh up-to-date bionic system where I just install "mysql-server": [ter nov 20 15:30:58 2018] audit: type=1400 audit(1542741161.387:263): apparmor="DENIED" operation="open" namespace="root//lxd-bionic-mysql_<var-lib-lxd>" profile="/usr/sbin/mysqld" name="/sys/devices/system/node/" pid=15939 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=165536 ouid=0 [ter nov 20 15:30:58 2018] audit: type=1400 audit(1542741161.391:264): apparmor="DENIED" operation="capable" namespace="root//lxd-bionic-mysql_<var-lib-lxd>" profile="/usr/sbin/mysqld" pid=15939 comm="mysqld" capability=2 capname="dac_read_search" [ter nov 20 15:30:58 2018] audit: type=1400 audit(1542741161.403:265): apparmor="DENIED" operation="open" namespace="root//lxd-bionic-mysql_<var-lib-lxd>" profile="/usr/sbin/mysqld" name="/sys/devices/system/node/" pid=15943 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=165647 ouid=0
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