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package services
import (
"context"
"fmt"
"github.com/docker/docker/api/types/container"
"github.com/rancher/rke/docker"
"github.com/rancher/rke/hosts"
"github.com/rancher/rke/pki"
"github.com/rancher/types/apis/management.cattle.io/v3"
)
func runKubelet(ctx context.Context, host *hosts.Host, kubeletService v3.KubeletService, df hosts.DialerFactory) error {
imageCfg, hostCfg := buildKubeletConfig(host, kubeletService)
if err := docker.DoRunContainer(ctx, host.DClient, imageCfg, hostCfg, KubeletContainerName, host.Address, WorkerRole); err != nil {
return err
}
return runHealthcheck(ctx, host, KubeletPort, true, KubeletContainerName, df)
}
func removeKubelet(ctx context.Context, host *hosts.Host) error {
return docker.DoRemoveContainer(ctx, host.DClient, KubeletContainerName, host.Address)
}
func buildKubeletConfig(host *hosts.Host, kubeletService v3.KubeletService) (*container.Config, *container.HostConfig) {
imageCfg := &container.Config{
Image: kubeletService.Image,
Entrypoint: []string{"/opt/rke/entrypoint.sh",
"kubelet",
"--v=2",
"--address=0.0.0.0",
"--cluster-domain=" + kubeletService.ClusterDomain,
"--pod-infra-container-image=" + kubeletService.InfraContainerImage,
"--cgroups-per-qos=True",
"--enforce-node-allocatable=",
"--hostname-override=" + host.HostnameOverride,
"--cluster-dns=" + kubeletService.ClusterDNSServer,
"--network-plugin=cni",
"--cni-conf-dir=/etc/cni/net.d",
"--cni-bin-dir=/opt/cni/bin",
"--resolv-conf=/etc/resolv.conf",
"--allow-privileged=true",
"--cloud-provider=",
"--kubeconfig=" + pki.KubeNodeConfigPath,
"--require-kubeconfig=True",
},
}
for _, role := range host.Role {
switch role {
case ETCDRole:
imageCfg.Cmd = append(imageCfg.Cmd, "--node-labels=node-role.kubernetes.io/etcd=true")
case ControlRole:
imageCfg.Cmd = append(imageCfg.Cmd, "--node-labels=node-role.kubernetes.io/master=true")
case WorkerRole:
imageCfg.Cmd = append(imageCfg.Cmd, "--node-labels=node-role.kubernetes.io/worker=true")
}
}
hostCfg := &container.HostConfig{
VolumesFrom: []string{
SidekickContainerName,
},
Binds: []string{
"/etc/kubernetes:/etc/kubernetes",
"/usr/libexec/kubernetes/kubelet-plugins:/usr/libexec/kubernetes/kubelet-plugins",
"/etc/cni:/etc/cni:ro",
"/opt/cni:/opt/cni:ro",
"/etc/resolv.conf:/etc/resolv.conf",
"/sys:/sys",
"/var/lib/docker:/var/lib/docker:rw",
"/var/lib/kubelet:/var/lib/kubelet:shared",
"/var/run:/var/run:rw",
"/run:/run",
"/etc/ceph:/etc/ceph",
"/dev:/host/dev",
"/var/log/containers:/var/log/containers",
"/var/log/pods:/var/log/pods"},
NetworkMode: "host",
PidMode: "host",
Privileged: true,
RestartPolicy: container.RestartPolicy{Name: "always"},
}
for arg, value := range kubeletService.ExtraArgs {
cmd := fmt.Sprintf("--%s=%s", arg, value)
imageCfg.Entrypoint = append(imageCfg.Entrypoint, cmd)
}
return imageCfg, hostCfg
}
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