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Offer to raise the kernel key limits instead of only naming them #81

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Merged
MickLesk merged 1 commit into from
Oct 1, 2026
Merged

Offer to raise the kernel key limits instead of only naming them #81

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25 changes: 20 additions & 5 deletions ui/build-ui.func
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Original file line number Diff line number Diff line change
Expand Up @@ -200,19 +200,34 @@ maxkeys_check() {

if [[ "$used_lxc_keys" -gt "$threshold_keys" ]]; then
msg_warn "Key usage is near the limit (${used_lxc_keys}/${per_user_maxkeys})"
echo -e "${INFO} Suggested action: Set ${GN}kernel.keys.maxkeys=${new_limit_keys}${CL} in ${BOLD}/etc/sysctl.d/98-community-scripts.conf${CL}."
failure=1
fi
if [[ "$used_lxc_bytes" -gt "$threshold_bytes" ]]; then
msg_warn "Key byte usage is near the limit (${used_lxc_bytes}/${per_user_maxbytes})"
echo -e "${INFO} Suggested action: Set ${GN}kernel.keys.maxbytes=${new_limit_bytes}${CL} in ${BOLD}/etc/sysctl.d/98-community-scripts.conf${CL}."
failure=1
fi

if [[ "$failure" -eq 1 ]]; then
msg_error "Kernel key limits exceeded - see suggestions above"
exit 108
[[ "$failure" -eq 1 ]] || return 0

# Offering beats explaining: the old text named a file that does not exist yet and left
# every further install on the node blocked behind a step nobody could copy.
local keys_conf="/etc/sysctl.d/98-community-scripts.conf"
if prompt_confirm "${TAB}Raise the kernel key limits now?" "y" 60; then
if printf 'kernel.keys.maxkeys = %s\nkernel.keys.maxbytes = %s\n' \
"$new_limit_keys" "$new_limit_bytes" >"$keys_conf" 2>/dev/null &&
sysctl --system >/dev/null 2>&1; then
msg_ok "Raised kernel key limits (maxkeys ${new_limit_keys}, maxbytes ${new_limit_bytes})"
return 0
fi
msg_error "Could not apply ${keys_conf}"
fi

echo -e "${TAB}${INFO} Run this on the node, then start the script again:"
echo -e "${TAB}${GN}echo 'kernel.keys.maxkeys = ${new_limit_keys}' > ${keys_conf}${CL}"
echo -e "${TAB}${GN}echo 'kernel.keys.maxbytes = ${new_limit_bytes}' >> ${keys_conf}${CL}"
echo -e "${TAB}${GN}sysctl --system${CL}"
msg_error "Kernel key limits too low to create another container"
exit 108
}

# ==============================================================================
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