mirror of
https://github.com/kubesphere/kubekey.git
synced 2025-12-28 20:22:45 +00:00
101 lines
3.9 KiB
Go
101 lines
3.9 KiB
Go
/*
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Copyright 2020 The KubeSphere Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package dns
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import (
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"encoding/base64"
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"fmt"
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"github.com/kubesphere/kubekey/pkg/util/manager"
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"github.com/pkg/errors"
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"strings"
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)
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func OverrideCorednsService(mgr *manager.Manager) error {
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corednsSvc, err := GenerateCorednsService(mgr)
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if err != nil {
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return err
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}
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corednsSvcgBase64 := base64.StdEncoding.EncodeToString([]byte(corednsSvc))
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if _, err := mgr.Runner.ExecuteCmd(fmt.Sprintf("sudo -E /bin/sh -c \"echo %s | base64 -d > /etc/kubernetes/coredns-svc.yaml\"", corednsSvcgBase64), 1, false); err != nil {
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return errors.Wrap(errors.WithStack(err), "Failed to generate kubeadm config")
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}
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deleteKubednsSvcCmd := "/usr/local/bin/kubectl delete -n kube-system svc kube-dns"
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_, _ = mgr.Runner.ExecuteCmd(deleteKubednsSvcCmd, 1, true)
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if _, err := mgr.Runner.ExecuteCmd("sudo -E /bin/sh -c \"/usr/local/bin/kubectl apply -f /etc/kubernetes/coredns-svc.yaml\"", 2, true); err != nil {
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return errors.Wrap(errors.WithStack(err), "Failed to create coredns service")
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}
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return nil
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}
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func DeployNodelocaldns(mgr *manager.Manager, clusterIP string) error {
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nodelocaldns, err := GenerateNodelocaldnsService(mgr)
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if err != nil {
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return err
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}
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nodelocaldnsBase64 := base64.StdEncoding.EncodeToString([]byte(nodelocaldns))
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if _, err := mgr.Runner.ExecuteCmd(fmt.Sprintf("sudo -E /bin/sh -c \"echo %s | base64 -d > /etc/kubernetes/nodelocaldns.yaml\"", nodelocaldnsBase64), 1, false); err != nil {
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return errors.Wrap(errors.WithStack(err), "Failed to generate nodelocaldns manifests")
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}
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if _, err := mgr.Runner.ExecuteCmd("sudo -E /bin/sh -c \"/usr/local/bin/kubectl apply -f /etc/kubernetes/nodelocaldns.yaml\"", 5, true); err != nil {
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return errors.Wrap(errors.WithStack(err), "Failed to create nodelocaldns")
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}
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configMaps, err := mgr.Runner.ExecuteCmd("sudo -E /bin/sh -c \"/usr/local/bin/kubectl get cm -n kube-system nodelocaldns\"", 1, false)
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if err != nil && strings.Contains(configMaps, "NotFound") {
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nodelocaldns, err := GenerateNodelocaldnsConfigMap(mgr, clusterIP)
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if err != nil {
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return err
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}
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nodelocaldnsConfigMapBase64 := base64.StdEncoding.EncodeToString([]byte(nodelocaldns))
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if _, err := mgr.Runner.ExecuteCmd(fmt.Sprintf("sudo -E /bin/sh -c \"echo %s | base64 -d > /etc/kubernetes/nodelocaldnsConfigmap.yaml\"", nodelocaldnsConfigMapBase64), 1, false); err != nil {
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return errors.Wrap(errors.WithStack(err), "Failed to generate nodelocaldns configmap")
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}
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if _, err := mgr.Runner.ExecuteCmd("sudo -E /bin/sh -c \"/usr/local/bin/kubectl apply -f /etc/kubernetes/nodelocaldnsConfigmap.yaml\"", 5, true); err != nil {
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return errors.Wrap(errors.WithStack(err), "Failed to create nodelocaldns configmap")
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}
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}
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return nil
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}
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func CreateClusterDns(mgr *manager.Manager) error {
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var corednsClusterIP string
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services, err := mgr.Runner.ExecuteCmd("sudo -E /bin/sh -c \"/usr/local/bin/kubectl get svc -n kube-system coredns\"", 1, false)
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if err != nil {
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if strings.Contains(services, "NotFound") {
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if err := OverrideCorednsService(mgr); err != nil {
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return err
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}
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} else {
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return err
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}
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} else {
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if clusterIP, err := mgr.Runner.ExecuteCmd("sudo -E /bin/sh -c \"/usr/local/bin/kubectl get svc -n kube-system coredns -o jsonpath='{.spec.clusterIP}'\"", 1, false); err != nil {
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return err
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} else {
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corednsClusterIP = strings.TrimSpace(clusterIP)
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}
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}
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if err := DeployNodelocaldns(mgr, corednsClusterIP); err != nil {
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return err
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}
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return nil
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}
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