/etc/sysctl.d/zz-container-tools.conf is in open-infrastructure-container-tools 20180218-2.
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 | # The default limits are set to small and eventually lead to errors like
# the following on container start:
# Failed to allocate directory watch: Too many open files
# /proc/sys/fs/inotify/max_queued_events defaults to 16384
fs.inotify.max_queued_events=1048576
# /proc/sys/fs/inotify/max_user_instances defaults to 128
fs.inotify.max_user_instances=1048576
# /proc/sys/fs/inotify/max_user_watches defaults to 8192
fs.inotify.max_user_watches=1048576
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