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Enhance/system config eks/#2842/#165 #168

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d314502
Draft commit. Signed-off-by: Sekiranda Hamza sekirandahamza@gmail.com
Zanda256 Mar 30, 2022
465515e
Draft commit1. Signed-off-by: Sekiranda Hamza sekirandahamza@gmail.com
Zanda256 Mar 31, 2022
6ef9cc9
Added warning message. Signed-off-by: Sekiranda Hamza sekirandahamza@…
Zanda256 Apr 3, 2022
739ea5a
Added time to filename. Signed-off-by: Sekiranda Hamza sekirandahamza…
Zanda256 Apr 12, 2022
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1 change: 1 addition & 0 deletions go.mod
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ replace (
)

require (
github.com/aws/aws-sdk-go v1.34.9
github.com/evanphx/json-patch v4.12.0+incompatible // indirect
github.com/go-git/go-git/v5 v5.4.2
github.com/go-logr/logr v0.4.0
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6 changes: 2 additions & 4 deletions go.sum
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Original file line number Diff line number Diff line change
Expand Up @@ -129,6 +129,7 @@ github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a/go.mod h1:l
github.com/asaskevich/govalidator v0.0.0-20200428143746-21a406dcc535 h1:4daAzAu0S6Vi7/lbWECcX0j45yZReDZ56BQsrVBOEEY=
github.com/asaskevich/govalidator v0.0.0-20200428143746-21a406dcc535/go.mod h1:oGkLhpf+kjZl6xBf758TQhh5XrAeiJv/7FRz/2spLIg=
github.com/aws/aws-sdk-go v1.15.11/go.mod h1:mFuSZ37Z9YOHbQEwBWztmVzqXrEkub65tZoCYDt7FT0=
github.com/aws/aws-sdk-go v1.34.9 h1:cUGBW9CVdi0mS7K1hDzxIqTpfeWhpoQiguq81M1tjK0=
github.com/aws/aws-sdk-go v1.34.9/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
github.com/benbjohnson/clock v1.0.3/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
github.com/beorn7/perks v0.0.0-20160804104726-4c0e84591b9a/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
Expand Down Expand Up @@ -596,6 +597,7 @@ github.com/jinzhu/now v1.1.1 h1:g39TucaRWyV3dwDO++eEc6qf8TVIQ/Da48WmqjZ3i7E=
github.com/jinzhu/now v1.1.1/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
github.com/jmespath/go-jmespath v0.0.0-20160202185014-0b12d6b521d8/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
github.com/jmespath/go-jmespath v0.0.0-20160803190731-bd40a432e4c7/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
github.com/jmespath/go-jmespath v0.3.0 h1:OS12ieG61fsCg5+qLJ+SsW9NicxNkg3b25OyT2yCeUc=
github.com/jmespath/go-jmespath v0.3.0/go.mod h1:9QtRXoHjLGCJ5IBSaohpXITPlowMeeYCZ7fLUTSywik=
github.com/jmoiron/sqlx v1.3.1 h1:aLN7YINNZ7cYOPK3QC83dbM6KT0NMqVMw961TqrejlE=
github.com/jmoiron/sqlx v1.3.1/go.mod h1:2BljVx/86SuTyjE+aPYlHCTNvZrnJXghYGpNiXLBMCQ=
Expand Down Expand Up @@ -751,12 +753,8 @@ github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRW
github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f/go.mod h1:ZdcZmHo+o7JKHSa8/e818NopupXU1YMK5fe1lsApnBw=
github.com/nats-io/jwt/v2 v2.2.1-0.20220113022732-58e87895b296 h1:vU9tpM3apjYlLLeY23zRWJ9Zktr5jp+mloR942LEOpY=
github.com/nats-io/jwt/v2 v2.2.1-0.20220113022732-58e87895b296/go.mod h1:0tqz9Hlu6bCBFLWAASKhE5vUA4c24L9KPUUgvwumE/k=
github.com/nats-io/nats-server/v2 v2.7.3 h1:P0NgsnbTxrPMMPZ1/rLXWjS5bbPpRMCcPwlMd4nBDK4=
github.com/nats-io/nats-server/v2 v2.7.3/go.mod h1:eJUrA5gm0ch6sJTEv85xmXIgQWsB0OyjkTsKXvlHbYc=
github.com/nats-io/nats-server/v2 v2.7.4 h1:c+BZJ3rGzUKCBIM4IXO8uNT2u1vajGbD1kPA6wqCEaM=
github.com/nats-io/nats-server/v2 v2.7.4/go.mod h1:1vZ2Nijh8tcyNe8BDVyTviCd9NYzRbubQYiEHsvOQWc=
github.com/nats-io/nats.go v1.13.1-0.20220121202836-972a071d373d h1:GRSmEJutHkdoxKsRypP575IIdoXe7Bm6yHQF6GcDBnA=
github.com/nats-io/nats.go v1.13.1-0.20220121202836-972a071d373d/go.mod h1:BPko4oXsySz4aSWeFgOHLZs3G4Jq4ZAyE6/zMCxRT6w=
github.com/nats-io/nats.go v1.13.1-0.20220308171302-2f2f6968e98d h1:zJf4l8Kp67RIZhoVeniSLZs69SHNgjLHz0aNsqPPlx8=
github.com/nats-io/nats.go v1.13.1-0.20220308171302-2f2f6968e98d/go.mod h1:BPko4oXsySz4aSWeFgOHLZs3G4Jq4ZAyE6/zMCxRT6w=
github.com/nats-io/nkeys v0.3.0 h1:cgM5tL53EvYRU+2YLXIK0G2mJtK12Ft9oeooSZMA2G8=
Expand Down
68 changes: 68 additions & 0 deletions utils/kubernetes/kubeconfig.go
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Original file line number Diff line number Diff line change
@@ -1,12 +1,22 @@
package kubernetes

import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"time"

"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/eks"
"k8s.io/client-go/tools/clientcmd"
clientcmdapi "k8s.io/client-go/tools/clientcmd/api"

"github.com/layer5io/meshkit/models"
"github.com/layer5io/meshkit/utils"
"github.com/pkg/errors"
logger "github.com/sirupsen/logrus"
"gopkg.in/yaml.v2"
)

Expand Down Expand Up @@ -38,3 +48,61 @@ func (c *Client) GetCurrentContext() (string, error) {

return config.CurrentContext, nil
}

func WriteEKSConfig(clusterName, region, configPath string) error {
sess := session.Must(session.NewSession(&aws.Config{
Region: aws.String(region),
}))
eksSvc := eks.New(sess)

input := &eks.DescribeClusterInput{
Name: aws.String(clusterName),
}
result, err := eksSvc.DescribeCluster(input)
if err != nil {
return errors.New(fmt.Sprintf("Error calling DescribeCluster: %v", err))
}

cname := *result.Cluster.Arn
endpt := *result.Cluster.Endpoint
clusters := make(map[string]*clientcmdapi.Cluster)
clusters[clusterName] = &clientcmdapi.Cluster{
Server: endpt,
CertificateAuthorityData: []byte(*result.Cluster.CertificateAuthority.Data),
}
contexts := make(map[string]*clientcmdapi.Context)
contexts[cname] = &clientcmdapi.Context{
Cluster: cname,
AuthInfo: cname,
}

clientConfig := clientcmdapi.Config{
Kind: "Config",
APIVersion: "v1",
Clusters: clusters,
Contexts: contexts,
CurrentContext: cname,
}

prevConfigbytes, err := ioutil.ReadFile(configPath)
if err != nil {
return err
}
t := time.Now().Local().Format(time.RFC3339)
// Need for a common project wide directory to dump these archived config
err = os.MkdirAll("/tmp/meshery/", os.ModePerm)
if err != nil {
return err
}
tmpArch := "tmp/meshery/config" + t + ".yaml"
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@Zanda256
Please use the below path for storing the backup config files:

	home, err := os.UserHomeDir()
	if err != nil {
		log.Warn("failed to get user home directory")
	}
	tmpArch = filepath.Join(home, ".meshery", "config"+t+".yaml")

err = os.WriteFile(tmpArch, prevConfigbytes, 0644)
if err != nil {
return err
}
logger.WithFields(logger.Fields{"archived": tmpArch}).Warn("Overwriting previous config, archived config at %s", tmpArch)
if err := clientcmd.WriteToFile(clientConfig, configPath); err != nil {
return err
}
// O_CREATE O_TRUNC
return nil
}