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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| /* | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package amifamily | ||
|
|
||
| import ( | ||
| "github.com/samber/lo" | ||
| v1 "k8s.io/api/core/v1" | ||
| corev1beta1 "sigs.k8s.io/karpenter/pkg/apis/v1beta1" | ||
| "sigs.k8s.io/karpenter/pkg/cloudprovider" | ||
|
|
||
| "github.com/aws/karpenter-provider-aws/pkg/apis/v1beta1" | ||
| "github.com/aws/karpenter-provider-aws/pkg/providers/amifamily/bootstrap" | ||
| ) | ||
|
|
||
| type AL2023 struct { | ||
| DefaultFamily | ||
| *Options | ||
| } | ||
|
|
||
| func (a AL2023) DefaultAMIs(version string) []DefaultAMIOutput { | ||
| // TODO: SSM parameters not yet available | ||
| return []DefaultAMIOutput{} | ||
| } | ||
|
|
||
| func (a AL2023) UserData(kubeletConfig *corev1beta1.KubeletConfiguration, taints []v1.Taint, labels map[string]string, caBundle *string, _ []*cloudprovider.InstanceType, customUserData *string, _ *v1beta1.InstanceStorePolicy) bootstrap.Bootstrapper { | ||
| return bootstrap.Nodeadm{ | ||
| Options: bootstrap.Options{ | ||
| ClusterName: a.Options.ClusterName, | ||
| ClusterEndpoint: a.Options.ClusterEndpoint, | ||
| ClusterCIDR: a.Options.ClusterCIDR, | ||
| KubeletConfig: kubeletConfig, | ||
| Taints: taints, | ||
| Labels: labels, | ||
| CABundle: caBundle, | ||
| CustomUserData: customUserData, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| // DefaultBlockDeviceMappings returns the default block device mappings for the AMI Family | ||
| func (a AL2023) DefaultBlockDeviceMappings() []*v1beta1.BlockDeviceMapping { | ||
| return []*v1beta1.BlockDeviceMapping{{ | ||
| DeviceName: a.EphemeralBlockDevice(), | ||
| EBS: &DefaultEBS, | ||
| }} | ||
| } | ||
|
|
||
| func (a AL2023) EphemeralBlockDevice() *string { | ||
| return lo.ToPtr("/dev/xvda") | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,178 @@ | ||
| /* | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package bootstrap | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/base64" | ||
| "fmt" | ||
| "mime/multipart" | ||
| "net/textproto" | ||
| "reflect" | ||
| "strings" | ||
|
|
||
| admapi "github.com/awslabs/amazon-eks-ami/nodeadm/api" | ||
| "github.com/awslabs/amazon-eks-ami/nodeadm/api/v1alpha1" | ||
| "github.com/samber/lo" | ||
| v1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| "k8s.io/apimachinery/pkg/util/json" | ||
| ) | ||
|
|
||
| const nodeConfigContentType = "application/" + admapi.GroupName | ||
|
|
||
| // const shellConfigContentType = `text/x-shellscript; charset="us-ascii"` | ||
|
|
||
| type Nodeadm struct { | ||
| Options | ||
| } | ||
|
|
||
| func (n Nodeadm) Script() (string, error) { | ||
| nodeadmConfig, err := n.nodeadmConfig() | ||
| if err != nil { | ||
| return "", fmt.Errorf("generating NodeConfig, %w", err) | ||
| } | ||
| userData, err := n.mergeUserData(lo.Compact([]string{nodeadmConfig, lo.FromPtr(n.CustomUserData)})...) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| // The mime/multipart package adds carriage returns, while the rest of our logic does not. Remove all | ||
| // carriage returns for consistency. | ||
| return base64.StdEncoding.EncodeToString([]byte(strings.ReplaceAll(userData, "\r", ""))), nil | ||
| } | ||
|
|
||
| func (n Nodeadm) mergeUserData(userDatas ...string) (string, error) { | ||
| var outputBuffer bytes.Buffer | ||
| writer := multipart.NewWriter(&outputBuffer) | ||
| if err := writer.SetBoundary(Boundary); err != nil { | ||
| return "", fmt.Errorf("defining boundary for merged user data %w", err) | ||
| } | ||
| outputBuffer.WriteString(MIMEVersionHeader + "\n") | ||
| outputBuffer.WriteString(fmt.Sprintf(MIMEContentTypeHeaderTemplate, Boundary) + "\n\n") | ||
| for _, userData := range userDatas { | ||
| mimedUserData, err := n.mimeify(userData) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| if err := copyCustomUserDataParts(writer, mimedUserData); err != nil { | ||
| return "", err | ||
| } | ||
| } | ||
| writer.Close() | ||
| return outputBuffer.String(), nil | ||
| } | ||
|
|
||
| func (n Nodeadm) nodeadmConfig() (string, error) { | ||
| config := &v1alpha1.NodeConfig{ | ||
| TypeMeta: v1.TypeMeta{ | ||
| Kind: "NodeConfig", | ||
| APIVersion: admapi.GroupName + "/v1alpha1", | ||
| }, | ||
| Spec: v1alpha1.NodeConfigSpec{ | ||
| Cluster: v1alpha1.ClusterDetails{ | ||
| Name: n.ClusterName, | ||
| APIServerEndpoint: n.ClusterEndpoint, | ||
| CIDR: n.ClusterCIDR, | ||
| }, | ||
| }, | ||
| } | ||
| if n.CABundle != nil { | ||
| ca, err := base64.StdEncoding.DecodeString(*n.CABundle) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| config.Spec.Cluster.CertificateAuthority = ca | ||
| } | ||
| inlineConfig, err := n.generateInlineKubeletConfiguration() | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| if len(inlineConfig) != 0 { | ||
| config.Spec.Kubelet.Config = inlineConfig | ||
| } | ||
| if labelArg := n.nodeLabelArg(); labelArg != "" { | ||
| config.Spec.Kubelet.Flags = []string{labelArg} | ||
| } | ||
|
|
||
| configJSON, err := json.Marshal(config) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| return string(configJSON), nil | ||
| } | ||
|
|
||
| func (n Nodeadm) generateInlineKubeletConfiguration() (map[string]runtime.RawExtension, error) { | ||
| config := map[string]runtime.RawExtension{} | ||
| if n.KubeletConfig != nil { | ||
| t := reflect.TypeOf(n.KubeletConfig).Elem() | ||
| rv := reflect.Indirect(reflect.ValueOf(n.KubeletConfig)) | ||
| for i := 0; i < t.NumField(); i++ { | ||
| field := t.Field(i) | ||
| name := "" | ||
| if tags := strings.Split(field.Tag.Get("json"), ","); len(tags) > 0 { | ||
| name = tags[0] | ||
| } else { | ||
| return nil, fmt.Errorf("failed to serialize KubeletConfiguration, field %q doesn't specify a json tag", field.Name) | ||
| } | ||
| val := rv.FieldByName(field.Name).Interface() | ||
| if reflect.DeepEqual(val, reflect.Zero(field.Type).Interface()) { | ||
| // don't attempt to serialize zero values | ||
| continue | ||
| } | ||
| jsonVal, err := json.Marshal(val) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to serialize KubeletConfiguration, %w", err) | ||
| } | ||
| config[name] = runtime.RawExtension{Raw: jsonVal} | ||
| } | ||
| } | ||
| if len(n.Taints) != 0 { | ||
| taintsJSON, err := json.Marshal(n.Taints) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to serialize KubeletConfiguration, %w", err) | ||
| } | ||
| config["registerWithTaints"] = runtime.RawExtension{Raw: taintsJSON} | ||
| } | ||
| if _, ok := config["maxPods"]; !n.AWSENILimitedPodDensity && !ok { | ||
| config["maxPods"] = runtime.RawExtension{Raw: []byte("110")} | ||
| } | ||
| return config, nil | ||
| } | ||
|
|
||
| // TODO: attempt to parse as yaml / json then fall back to shell-script? Or only support yaml / json in non-mime format | ||
| // mimeify returns userData in a mime format | ||
| // if the userData passed in is already in a mime format, then the input is returned without modification | ||
| func (n Nodeadm) mimeify(customUserData string) (string, error) { | ||
| if strings.HasPrefix(strings.TrimSpace(customUserData), "MIME-Version:") || | ||
| strings.HasPrefix(strings.TrimSpace(customUserData), "Content-Type:") { | ||
| return customUserData, nil | ||
| } | ||
| var outputBuffer bytes.Buffer | ||
| writer := multipart.NewWriter(&outputBuffer) | ||
| outputBuffer.WriteString(MIMEVersionHeader + "\n") | ||
| outputBuffer.WriteString(fmt.Sprintf(MIMEContentTypeHeaderTemplate, writer.Boundary()) + "\n\n") | ||
| partWriter, err := writer.CreatePart(textproto.MIMEHeader{ | ||
| "Content-Type": []string{nodeConfigContentType}, | ||
| }) | ||
| if err != nil { | ||
| return "", fmt.Errorf("creating multi-part section from custom user-data: %w", err) | ||
| } | ||
| _, err = partWriter.Write([]byte(customUserData)) | ||
| if err != nil { | ||
| return "", fmt.Errorf("writing custom user-data input: %w", err) | ||
| } | ||
| writer.Close() | ||
| return outputBuffer.String(), nil | ||
| } |
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