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kube-up.sh: set inotify limits

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also debug inotify limits before/after setting
This commit is contained in:
Benjamin Elder 2025-03-21 12:54:45 -07:00
parent 4288af4dc8
commit a264b0015e
1 changed files with 18 additions and 0 deletions
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18
cluster/gce/gci/configure-helper.sh
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@ -66,6 +66,24 @@ function setup-os-params {
# /sbin/crash_reporter which is more restrictive in saving crash dumps. So for
# now, set a generic core_pattern that users can work with.
echo "/core.%e.%p.%t" > /proc/sys/kernel/core_pattern
echo "Default max_user_watches / max_user_instances:"
# ensure we have enough inotify watches for many pods, versus the OS defaults
# debug before & after / defaults for comparison
sysctl fs.inotify.max_user_watches
sysctl fs.inotify.max_user_instances
cat <<EOF > /etc/sysctl.d/inotify.conf
fs.inotify.max_user_watches=65536
fs.inotify.max_user_instances=8192
EOF
# Ubuntu vs COS, load sysctl settings now
if [[ -e "/usr/lib/systemd/systemd-sysctl" ]]; then
/usr/lib/systemd/systemd-sysctl
else
/lib/systemd/systemd-sysctl
fi
echo "Updated max_user_watches / max_user_instances:"
sysctl fs.inotify.max_user_watches
sysctl fs.inotify.max_user_instances
}
# secure_random generates a secure random string of bytes. This function accepts