Documentation ¶
Index ¶
Constants ¶
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Variables ¶
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var K3sKillallScript = template.Must(template.New("k3s-killall.sh").Parse( dedent.Dedent(`#!/bin/sh [ $(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 for service in /etc/systemd/system/k3s*.service; do [ -s $service ] && systemctl stop $(basename $service) done for service in /etc/init.d/k3s*; do [ -x $service ] && $service stop done 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 $({ set +x; } 2>/dev/null; getshims; set -x) do_unmount_and_remove() { set +x while read -r _ path _; do case "$path" in $1*) echo "$path" ;; esac done < /proc/self/mounts | sort -r | xargs -r -t -n 1 sh -c 'umount "$0" && rm -rf "$0"' set -x } do_unmount_and_remove '/run/k3s' do_unmount_and_remove '/var/lib/rancher/k3s' do_unmount_and_remove '/var/lib/kubelet/pods' do_unmount_and_remove '/var/lib/kubelet/plugins' do_unmount_and_remove '/run/netns/cni-' # Remove CNI namespaces ip netns show 2>/dev/null | grep cni- | xargs -r -t -n 1 ip netns delete # Delete network interface(s) that match 'master cni0' ip link show 2>/dev/null | grep 'master cni0' | while read ignore iface ignore; do iface=${iface%%@*} [ -z "$iface" ] || ip link delete $iface done ip link delete cni0 ip link delete flannel.1 ip link delete flannel-v6.1 ip link delete kube-ipvs0 ip link delete flannel-wg ip link delete flannel-wg-v6 ip link delete nodelocaldns ip link delete cilium_host ip link delete cilium_vxlan ip -br link show | grep 'cali[a-f0-9]*' | awk -F '@' '{print $1}' | xargs -r -t -n 1 ip link delete rm -rf /var/lib/cni/ iptables-save | grep -v KUBE- | grep -v CNI- | grep -iv flannel | iptables-restore ip6tables-save | grep -v KUBE- | grep -v CNI- | grep -iv flannel | ip6tables-restore `)))
K3sKillallScript defines the template of k3s-killall script.
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var ( // k3sRegistryConfigTempl defines the template of k3s' registry. K3sRegistryConfigTempl = template.Must(template.New("registries.yaml").Funcs(funcMap).Parse( dedent.Dedent(`{{ toYaml .Registries }}`))) )
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var ( // K3sService defines the template of kubelet service for systemd. K3sService = template.Must(template.New("k3s.service").Parse( dedent.Dedent(`[Unit] Description=Lightweight Kubernetes Documentation=https://k3s.io Wants=network-online.target After=network-online.target [Install] WantedBy=multi-user.target [Service] Type=notify EnvironmentFile=/etc/systemd/system/k3s.service.env {{ if .IsMaster }} Environment="K3S_ARGS={{ range .CertSANs }} --tls-san={{ . }}{{- end }} {{ range .ApiserverArgs }} --kube-apiserver-arg={{ . }}{{- end }} {{ range .ControllerManager }} --kube-controller-manager-arg={{ . }}{{- end }} {{ range .SchedulerArgs }} --kube-scheduler-arg={{ . }}{{- end }} --cluster-cidr={{ .PodSubnet }} --service-cidr={{ .ServiceSubnet }} --cluster-dns={{ .ClusterDns }} --flannel-backend=none --disable-network-policy --disable-cloud-controller --disable=servicelb,traefik,metrics-server,local-storage" {{ end }} Environment="K3S_EXTRA_ARGS={{ if .IsDockerRuntime }}--docker{{ end }} {{ if .ContainerRuntimeEndpoint }}--container-runtime-endpoint={{ .ContainerRuntimeEndpoint }}{{ end }} --node-name={{ .HostName }} --node-ip={{ .NodeIP }} --pause-image={{ .PauseImage }} {{ range .KubeletArgs }} --kubelet-arg={{ . }}{{- end }} {{ range .KubeProxyArgs }} --kube-proxy-arg={{ . }}{{- end }}" Environment="K3S_ROLE={{ if .IsMaster }}server{{ else }}agent{{ end }}" Environment="K3S_SERVER_ARGS={{ if .Server }}--server={{ .Server }}{{ end }}" KillMode=process Delegate=yes LimitNOFILE=1048576 LimitNPROC=infinity LimitCORE=infinity TasksMax=infinity TimeoutStartSec=0 Restart=always RestartSec=5s ExecStartPre=-/sbin/modprobe br_netfilter ExecStartPre=-/sbin/modprobe overlay ExecStart=/usr/local/bin/k3s $K3S_ROLE $K3S_ARGS $K3S_EXTRA_ARGS $K3S_SERVER_ARGS `))) )
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var K3sServiceEnv = template.Must(template.New("k3s.service.env").Parse( dedent.Dedent(`# Note: This dropin only works with k3s {{ if .IsMaster }} K3S_DATASTORE_ENDPOINT={{ .DataStoreEndPoint }} {{- if .DataStoreCaFile }} K3S_DATASTORE_CAFILE={{ .DataStoreCaFile }} {{- end }} {{- if .DataStoreCertFile }} K3S_DATASTORE_CERTFILE={{ .DataStoreCertFile }} {{- end }} {{- if .DataStoreKeyFile }} K3S_DATASTORE_KEYFILE={{ .DataStoreKeyFile }} {{- end }} K3S_KUBECONFIG_MODE=644 {{ end }} {{ if .Token }} K3S_TOKEN={{ .Token }} {{ end }} `)))
K3sServiceEnv defines the template of kubelet's Env for the kubelet's systemd service.
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var K3sUninstallScript = template.Must(template.New("k3s-uninstall.sh").Parse( dedent.Dedent(`#!/bin/sh set -x [ $(id -u) -eq 0 ] || exec sudo $0 $@ /usr/local/bin/k3s-killall.sh if which systemctl; then systemctl disable k3s systemctl reset-failed k3s systemctl daemon-reload fi if which rc-update; then rc-update delete k3s default fi rm -f /etc/systemd/system/k3s.service rm -rf /etc/systemd/system/k3s.service.d rm -f /etc/systemd/system/k3s.service.env remove_uninstall() { rm -f /usr/local/bin/k3s-uninstall.sh } trap remove_uninstall EXIT if (ls /etc/systemd/system/k3s*.service || ls /etc/init.d/k3s*) >/dev/null 2>&1; then set +x; echo 'Additional k3s services installed, skipping uninstall of k3s'; set -x exit fi for cmd in kubectl crictl ctr; do if [ -L /usr/local/bin/$cmd ]; then rm -f /usr/local/bin/$cmd fi done rm -rf /etc/rancher/k3s rm -rf /run/k3s rm -rf /run/flannel rm -rf /var/lib/rancher/k3s rm -rf /var/lib/kubelet rm -f /usr/local/bin/k3s rm -f /usr/local/bin/k3s-killall.sh if type yum >/dev/null 2>&1; then yum remove -y k3s-selinux rm -f /etc/yum.repos.d/rancher-k3s-common*.repo fi `)))
K3sUninstallScript defines the template of k3s-killall script.
Functions ¶
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Types ¶
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