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#!/bin/sh
# Based on: k3s-killall.sh installed when running Rancher Lab's K3S install.sh
# In open-source project: https://github.com/k3s-io/k3s
#
# Original file: Copyright (c) 2021 Rancher Labs and Contributors.
# Modifications: Copyright (c) 2021 Arm Limited and Contributors. All rights reserved.
#
# Modifications:
# - Change systemd service directory location
# - Fix PID parsing to run on core image
# - Remove service stopping code (as this is intended to run as part of service
# stop)
# - Changes to resolve warnings from the ShellCheck static analysis tool
#
# SPDX-License-Identifier: Apache License 2.0
[ "$(id -u)" -eq 0 ] || exec sudo "$0" "$@"
for bin in /var/lib/rancher/k3s/data/**/bin/; do
[ -d "$bin" ] && export PATH=$PATH:$bin:$bin/aux
done
set -x
pschildren() {
ps -e -o ppid= -o pid= | sed -e 's/^\s*//g; s/\s\s*/\t/g;' | grep -w "^$1" | cut -f2
}
pstree() {
for pid in "$@"; do
echo "$pid"
for child in $(pschildren "$pid"); do
pstree "$child"
done
done
}
killtree() {
while read -r pid; do
if [ -n "${pid}" ]; then
kill -9 "${pid}" 2>/dev/null
fi
done <<EOF
$({ set +x; } 2>/dev/null; pstree "$@"; set -x;)
EOF
}
getshims() {
ps -e -o pid= -o args= | sed -e 's/^ *//; s/\s\s*/\t/;' | grep -w '[^/]*/bin/containerd-shim' | cut -f1
}
killtree "$({ set +x; } 2>/dev/null; getshims; set -x)"
# shellcheck disable=SC2016
do_unmount_and_remove() {
set +x
while read -r _ path _; do
case "$path" in $1*) echo "$path" ;; esac
done < /proc/self/mounts | sort -r | xargs -r -t -n 1 sh -c 'umount "$0" && rm -rf "$0"'
set -x
}
do_unmount_and_remove '/run/k3s'
do_unmount_and_remove '/var/lib/rancher/k3s'
do_unmount_and_remove '/var/lib/kubelet/pods'
do_unmount_and_remove '/var/lib/kubelet/plugins'
do_unmount_and_remove '/run/netns/cni-'
# Remove CNI namespaces
ip netns show 2>/dev/null | grep cni- | xargs -r -t -n 1 ip netns delete
# Delete network interface(s) that match 'master cni0'
ip link show 2>/dev/null | grep 'master cni0' | while read -r _ iface _; do
iface=${iface%%@*}
[ -z "$iface" ] || ip link delete "$iface"
done
ip link delete cni0
ip link delete flannel.1
ip link delete flannel-v6.1
rm -rf /var/lib/cni/
iptables-save | grep -v KUBE- | grep -v CNI- | iptables-restore
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