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Diffstat (limited to 'system/k3s/config/rc.k3s')
| -rw-r--r-- | system/k3s/config/rc.k3s | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/system/k3s/config/rc.k3s b/system/k3s/config/rc.k3s new file mode 100644 index 0000000000..3cfeed1b5c --- /dev/null +++ b/system/k3s/config/rc.k3s @@ -0,0 +1,139 @@ +#!/usr/bin/env bash + +### BEGIN INIT INFO +# Provides: k3s +# Required-Start: $network $remote_fs $syslog +# Required-Stop: $network $remote_fs $syslog +# Default-Start: 2 3 4 5 +# Default-Stop: 0 1 6 +# Short-Description: Lightweight Kubernetes Distribution +### END INIT INFO + +PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin + +BASE=k3s +DAEMON_DIR=/usr/bin +DAEMON="$BASE server" +PID=/var/run/$BASE.pid +SOCK=/run/k3s/containerd/containerd.sock +ENVFILE=/etc/rancher/$BASE/$BASE.service.env + +# Load environment variables +[ -r $ENVFILE ] && . $ENVFILE + +do_start() { + # Load kernel modules + /sbin/modprobe br_netfilter || true + /sbin/modprobe overlay || true + + $DAEMON_DIR/$DAEMON > /dev/null 2>&1 & + pidof "$DAEMON" > $PID + + sleep 7 + if [ -f $PID ]; then + echo "$BASE has started." + else + echo "$BASE failed to start. Please restart the daemon." + fi +} + +do_stop() { + if [ -f $PID ]; then + echo "Stopping $BASE.." + kill $(ps aux | grep "$SOCK" | awk '{print $2}') \ + $(cat $PID) > /dev/null 2>&1 + sleep 2 + ip link delete flannel.1 > /dev/null 2>&1 + rm -f $PID + echo "$BASE has stopped." + else + killall "$DAEMON" > /dev/null 2>&1 || echo "$BASE is not running." + fi +} + +do_restart() { + do_stop > /dev/null + do_start > /dev/null + echo "$BASE has restarted." +} + +do_stat() { + if [ -s $PID ]; then + echo "$BASE is running: $(cat $PID)" + else + echo "$BASE is not running." + fi +} + +case "$1" in + start) + echo "Starting $BASE.." + do_start + ;; + stop) + do_stop + ;; + killall) + # This option is merged from killall script, good idea to have it here! + echo "Stopping $BASE and cleaning up resources.." + if [ ! -f $PID ]; then + do_start > /dev/null + fi + sleep 5 + 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() { + kill -9 $( + { set +x; } 2>/dev/null; + pstree $@; + set -x; + ) 2>/dev/null + } + getshims() { + ps -e -o pid= -o args= | sed -e 's/^ *//; s/\s\s*/\t/;' | grep -w 'k3s/data/[^/]*/bin/containerd-shim' | cut -f1 + } + killtree $({ set +x; } 2>/dev/null; getshims; set -x) + do_unmount_and_remove() { + awk -v path="$1" '$2 ~ ("^" path) { print $2 }' /proc/self/mounts | sort -r | xargs -r -t -n 1 sh -c 'umount "$0" && rm -rf "$0"' + } + sleep 2 + do_unmount_and_remove '/run/k3s' + do_unmount_and_remove '/var/lib/rancher/k3s' + do_unmount_and_remove '/var/lib/kubelet/pods' + do_unmount_and_remove '/run/netns/cni-' + ip netns show 2>/dev/null | grep cni- | xargs -r -t -n 1 ip netns delete + ip link show 2>/dev/null | grep 'master cni0' | while read ignore iface ignore; do + iface=${iface%%@*} + [ -z "$iface" ] || ip link delete $iface + done + ip link delete cni0 + ip link delete flannel.1 + rm -rf /var/lib/cni/ + iptables-save | grep -v 'KUBE-\|CNI-' | iptables-restore + do_stop > /dev/null + echo "Done." + ;; + status) + do_stat + ;; + restart) + echo "Restarting $BASE.." + do_restart + ;; + *) + echo "Usage: $0 {start|stop|killall|status|restart}" >&2 + exit 1 + ;; +esac
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