Jim Gauld 169a0c0ee3 Move k8s container cleanup to containerd service ... This introduces k8s-container-cleanup script that will be called when containerd.service is stopped. The script detects whether systemd state is 'stopping' due to shutdown/reboot, then stops all running containers before the service shuts down. During shutdown/reboot, some containers are not receiving the SIGTERM signal. This leads to unexpected behaviour such as generating huge coredumps. There is an upstream issue regarding this: https://github.com/kubernetes/kubernetes/issues/107158 The problem seems to be systemd related but this commit addresses the problem with a workaround. This reverts commit f3c18b0f79. The k8s-container-cleanup script is moved from kubelet.service to containerd.service. The ExecStopPost that calls this script is removed, and replaced with ExecStop in containerd.service to call the script (in config-files repo). The k8s-container-cleanup script requires containerd is running in order to use crictl utility. The shutdown of kubelet and containerd have unpredictable timing, so the cleanup must be done in containerd. Test Plan: On AIO-SX PASS: Verify k8s-container-cleanup logs to daemon.log during 'stopping. PASS: Manual change containerd/kubelet shutdown timing and verify. k8s-container-cleanup running to completion before containerd stopped. PASS: Reboot and verify k8s-container-cleanup running to completion. PASS: Lock/unlock and verify k8s-container-cleanup running to completion. PASS: Manually run spellintian tool against k8s-container-cleanup.sh. PASS: Manually run shellcheck tool against k8s-container-cleanup.sh. PASS: Zuul tox bashate tool against k8s-container-cleanup.sh. Partial-Bug: 1964111 Change-Id: Ic8a9e257f861ae218a8520205eced3eaa580dd20 Signed-off-by: Jim Gauld <james.gauld@windriver.com>		2022-04-12 13:52:40 -04:00
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centos	Move k8s container cleanup to containerd service	2022-04-12 13:52:40 -04:00