forked from rancher/rke
/
up.go
346 lines (300 loc) · 10.8 KB
/
up.go
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package cmd
import (
"context"
"fmt"
"strings"
"time"
"github.com/rancher/rke/cluster"
"github.com/rancher/rke/dind"
"github.com/rancher/rke/hosts"
"github.com/rancher/rke/log"
"github.com/rancher/rke/pki"
v3 "github.com/rancher/types/apis/management.cattle.io/v3"
"github.com/urfave/cli"
"k8s.io/client-go/util/cert"
)
const DINDWaitTime = 3
func UpCommand() cli.Command {
upFlags := []cli.Flag{
cli.StringFlag{
Name: "config",
Usage: "Specify an alternate cluster YAML file",
Value: pki.ClusterConfig,
EnvVar: "RKE_CONFIG",
},
cli.BoolFlag{
Name: "local",
Usage: "Deploy Kubernetes cluster locally",
},
cli.BoolFlag{
Name: "dind",
Usage: "Deploy Kubernetes cluster in docker containers (experimental)",
},
cli.StringFlag{
Name: "dind-storage-driver",
Usage: "Storage driver for the docker in docker containers (experimental)",
},
cli.StringFlag{
Name: "dind-dns-server",
Usage: "DNS resolver to be used by docker in docker container. Useful if host is running systemd-resovld",
Value: "8.8.8.8",
},
cli.BoolFlag{
Name: "update-only",
Usage: "Skip idempotent deployment of control and etcd plane",
},
cli.BoolFlag{
Name: "disable-port-check",
Usage: "Disable port check validation between nodes",
},
cli.BoolFlag{
Name: "init",
Usage: "Initiate RKE cluster",
},
cli.StringFlag{
Name: "cert-dir",
Usage: "Specify a certificate dir path",
},
cli.BoolFlag{
Name: "custom-certs",
Usage: "Use custom certificates from a cert dir",
},
}
upFlags = append(upFlags, commonFlags...)
return cli.Command{
Name: "up",
Usage: "Bring the cluster up",
Action: clusterUpFromCli,
Flags: upFlags,
}
}
func ClusterUp(ctx context.Context, dialersOptions hosts.DialersOptions, flags cluster.ExternalFlags) (string, string, string, string, map[string]pki.CertificatePKI, error) {
var APIURL, caCrt, clientCert, clientKey string
clusterState, err := cluster.ReadStateFile(ctx, cluster.GetStateFilePath(flags.ClusterFilePath, flags.ConfigDir))
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
kubeCluster, err := cluster.InitClusterObject(ctx, clusterState.DesiredState.RancherKubernetesEngineConfig.DeepCopy(), flags)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
// check if rotate certificates is triggered
if kubeCluster.RancherKubernetesEngineConfig.RotateCertificates != nil {
return rebuildClusterWithRotatedCertificates(ctx, dialersOptions, flags)
}
log.Infof(ctx, "Building Kubernetes cluster")
err = kubeCluster.SetupDialers(ctx, dialersOptions)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
err = kubeCluster.TunnelHosts(ctx, flags)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
currentCluster, err := kubeCluster.GetClusterState(ctx, clusterState)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
if !flags.DisablePortCheck {
if err = kubeCluster.CheckClusterPorts(ctx, currentCluster); err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
}
err = cluster.SetUpAuthentication(ctx, kubeCluster, currentCluster, clusterState)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
if len(kubeCluster.ControlPlaneHosts) > 0 {
APIURL = fmt.Sprintf("https://" + kubeCluster.ControlPlaneHosts[0].Address + ":6443")
}
clientCert = string(cert.EncodeCertPEM(kubeCluster.Certificates[pki.KubeAdminCertName].Certificate))
clientKey = string(cert.EncodePrivateKeyPEM(kubeCluster.Certificates[pki.KubeAdminCertName].Key))
caCrt = string(cert.EncodeCertPEM(kubeCluster.Certificates[pki.CACertName].Certificate))
// moved deploying certs before reconcile to remove all unneeded certs generation from reconcile
err = kubeCluster.SetUpHosts(ctx, flags)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
err = cluster.ReconcileCluster(ctx, kubeCluster, currentCluster, flags)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
// update APIURL after reconcile
if len(kubeCluster.ControlPlaneHosts) > 0 {
APIURL = fmt.Sprintf("https://" + kubeCluster.ControlPlaneHosts[0].Address + ":6443")
}
if err := kubeCluster.PrePullK8sImages(ctx); err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
err = kubeCluster.DeployControlPlane(ctx)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
// Apply Authz configuration after deploying controlplane
err = cluster.ApplyAuthzResources(ctx, kubeCluster.RancherKubernetesEngineConfig, flags, dialersOptions)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
err = kubeCluster.UpdateClusterCurrentState(ctx, clusterState)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
err = cluster.SaveFullStateToKubernetes(ctx, kubeCluster, clusterState)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
err = kubeCluster.DeployWorkerPlane(ctx)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
if err = kubeCluster.CleanDeadLogs(ctx); err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
err = kubeCluster.SyncLabelsAndTaints(ctx, currentCluster)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
err = cluster.ConfigureCluster(ctx, kubeCluster.RancherKubernetesEngineConfig, kubeCluster.Certificates, flags, dialersOptions, false)
if err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
if err := checkAllIncluded(kubeCluster); err != nil {
return APIURL, caCrt, clientCert, clientKey, nil, err
}
log.Infof(ctx, "Finished building Kubernetes cluster successfully")
return APIURL, caCrt, clientCert, clientKey, kubeCluster.Certificates, nil
}
func checkAllIncluded(cluster *cluster.Cluster) error {
if len(cluster.InactiveHosts) == 0 {
return nil
}
var names []string
for _, host := range cluster.InactiveHosts {
names = append(names, host.Address)
}
return fmt.Errorf("Provisioning incomplete, host(s) [%s] skipped because they could not be contacted", strings.Join(names, ","))
}
func clusterUpFromCli(ctx *cli.Context) error {
if ctx.Bool("local") {
return clusterUpLocal(ctx)
}
if ctx.Bool("dind") {
return clusterUpDind(ctx)
}
clusterFile, filePath, err := resolveClusterFile(ctx)
if err != nil {
return fmt.Errorf("Failed to resolve cluster file: %v", err)
}
rkeConfig, err := cluster.ParseConfig(clusterFile)
if err != nil {
return fmt.Errorf("Failed to parse cluster file: %v", err)
}
rkeConfig, err = setOptionsFromCLI(ctx, rkeConfig)
if err != nil {
return err
}
updateOnly := ctx.Bool("update-only")
disablePortCheck := ctx.Bool("disable-port-check")
// setting up the flags
flags := cluster.GetExternalFlags(false, updateOnly, disablePortCheck, "", filePath)
// Custom certificates and certificate dir flags
flags.CertificateDir = ctx.String("cert-dir")
flags.CustomCerts = ctx.Bool("custom-certs")
if ctx.Bool("init") {
return ClusterInit(context.Background(), rkeConfig, hosts.DialersOptions{}, flags)
}
if err := ClusterInit(context.Background(), rkeConfig, hosts.DialersOptions{}, flags); err != nil {
return err
}
_, _, _, _, _, err = ClusterUp(context.Background(), hosts.DialersOptions{}, flags)
return err
}
func clusterUpLocal(ctx *cli.Context) error {
var rkeConfig *v3.RancherKubernetesEngineConfig
clusterFile, filePath, err := resolveClusterFile(ctx)
if err != nil {
log.Infof(context.Background(), "Failed to resolve cluster file, using default cluster instead")
rkeConfig = cluster.GetLocalRKEConfig()
} else {
rkeConfig, err = cluster.ParseConfig(clusterFile)
if err != nil {
return fmt.Errorf("Failed to parse cluster file: %v", err)
}
rkeConfig.Nodes = []v3.RKEConfigNode{*cluster.GetLocalRKENodeConfig()}
}
rkeConfig.IgnoreDockerVersion = ctx.Bool("ignore-docker-version")
// setting up the dialers
dialers := hosts.GetDialerOptions(nil, hosts.LocalHealthcheckFactory, nil)
// setting up the flags
flags := cluster.GetExternalFlags(true, false, false, "", filePath)
if ctx.Bool("init") {
return ClusterInit(context.Background(), rkeConfig, dialers, flags)
}
if err := ClusterInit(context.Background(), rkeConfig, dialers, flags); err != nil {
return err
}
_, _, _, _, _, err = ClusterUp(context.Background(), dialers, flags)
return err
}
func clusterUpDind(ctx *cli.Context) error {
// get dind config
rkeConfig, disablePortCheck, dindStorageDriver, filePath, dindDNS, err := getDindConfig(ctx)
if err != nil {
return err
}
// setup dind environment
if err = createDINDEnv(context.Background(), rkeConfig, dindStorageDriver, dindDNS); err != nil {
return err
}
// setting up the dialers
dialers := hosts.GetDialerOptions(hosts.DindConnFactory, hosts.DindHealthcheckConnFactory, nil)
// setting up flags
flags := cluster.GetExternalFlags(false, false, disablePortCheck, "", filePath)
flags.DinD = true
if ctx.Bool("init") {
return ClusterInit(context.Background(), rkeConfig, dialers, flags)
}
if err := ClusterInit(context.Background(), rkeConfig, dialers, flags); err != nil {
return err
}
// start cluster
_, _, _, _, _, err = ClusterUp(context.Background(), dialers, flags)
return err
}
func getDindConfig(ctx *cli.Context) (*v3.RancherKubernetesEngineConfig, bool, string, string, string, error) {
disablePortCheck := ctx.Bool("disable-port-check")
dindStorageDriver := ctx.String("dind-storage-driver")
dindDNS := ctx.String("dind-dns-server")
clusterFile, filePath, err := resolveClusterFile(ctx)
if err != nil {
return nil, disablePortCheck, "", "", "", fmt.Errorf("Failed to resolve cluster file: %v", err)
}
rkeConfig, err := cluster.ParseConfig(clusterFile)
if err != nil {
return nil, disablePortCheck, "", "", "", fmt.Errorf("Failed to parse cluster file: %v", err)
}
rkeConfig, err = setOptionsFromCLI(ctx, rkeConfig)
if err != nil {
return nil, disablePortCheck, "", "", "", err
}
// Setting conntrack max for kubeproxy to 0
if rkeConfig.Services.Kubeproxy.ExtraArgs == nil {
rkeConfig.Services.Kubeproxy.ExtraArgs = make(map[string]string)
}
rkeConfig.Services.Kubeproxy.ExtraArgs["conntrack-max-per-core"] = "0"
return rkeConfig, disablePortCheck, dindStorageDriver, filePath, dindDNS, nil
}
func createDINDEnv(ctx context.Context, rkeConfig *v3.RancherKubernetesEngineConfig, dindStorageDriver, dindDNS string) error {
for i := range rkeConfig.Nodes {
address, err := dind.StartUpDindContainer(ctx, rkeConfig.Nodes[i].Address, dind.DINDNetwork, dindStorageDriver, dindDNS)
if err != nil {
return err
}
if rkeConfig.Nodes[i].HostnameOverride == "" {
rkeConfig.Nodes[i].HostnameOverride = rkeConfig.Nodes[i].Address
}
rkeConfig.Nodes[i].Address = address
}
time.Sleep(DINDWaitTime * time.Second)
return nil
}