Workload cluster release cloud-director-35.3.0 for CAPVCD
Changes compared to v35.2.1
Components
- cluster-cloud-director from v7.4.2 to v7.5.0
- cluster from v8.4.2 to v8.5.0
- Flatcar from v4757.2.1 to v4757.2.2
Added
- Ignition: Expose
sysctl and sysfs configuration per node pool via kernel.sysctls (/etc/sysctl.d/90-node-pool.conf) and kernel.sysfs (/etc/tmpfiles.d/00-node-pool.conf). The parameters required by kubelet’s protectKernelDefaults cannot be set by name, and the Image Builder and Cilium sysctl configuration keeps precedence.
Changed
- Ignition: Rename
/etc/sysctl.d/hardening.conf to 80-hardening.conf so it sorts after Flatcar’s 65-baselayout.conf but before Image Builder’s 99-sysctl.conf and Cilium’s 99-zzz-override_cilium.conf. Previously the unprefixed file sorted last and overrode both. As a result, nodes now run with fs.inotify.max_user_watches = 524288 (previously 16384) and net.ipv4.conf.all.rp_filter = 0 (previously 1). - Ignition: Clean up sysctl hardening. Drop keys already set by Image Builder or Cilium (
fs.inotify.max_user_watches, fs.inotify.max_user_instances, net.ipv4.conf.all.rp_filter, vm.overcommit_memory, kernel.panic, kernel.panic_on_oops). Stop disabling net.ipv4.tcp_timestamps, since modern kernels randomize timestamp offsets.
Removed
- Ignition: Remove
os-hardening.service. Its sysctl -p duplicated what systemd-sysctl already applies at boot. Its gpasswd calls had no effect: glibc merges group memberships from /usr/share/baselayout/group (via nss-usrfiles) regardless of /etc/group.
