AWS cloudformation是否支持创建Kubernetes Pod，服务，副本控制器等或设置EKS集群和工作程序节点并使用Kubectl创建资源是唯一方法？
答案 0 :(得分：1)
不是开箱即用的，但是如果您使用由CloudFormation中的lambda函数支持的自定义资源类型，则可以。
AWS EKS quickstart has an example：
AWSTemplateFormatVersion: "2010-09-09"
Description: "deploy an example workload into an existing kubernetes cluster (qs-1p817r5f9)"
Parameters:
KubeConfigPath:
Type: String
KubeConfigKmsContext:
Type: String
Default: "EKSQuickStart"
KubeClusterName:
Type: String
NodeInstanceProfile:
Type: String
QSS3BucketName:
AllowedPattern: ^[0-9a-zA-Z]+([0-9a-zA-Z-]*[0-9a-zA-Z])*$
ConstraintDescription: Quick Start bucket name can include numbers, lowercase
letters, uppercase letters, and hyphens (-). It cannot start or end with a hyphen
(-).
Default: aws-quickstart
Description: S3 bucket name for the Quick Start assets. This string can include
numbers, lowercase letters, uppercase letters, and hyphens (-). It cannot start
or end with a hyphen (-).
Type: String
QSS3KeyPrefix:
AllowedPattern: ^[0-9a-zA-Z-/.]*$
ConstraintDescription: Quick Start key prefix can include numbers, lowercase letters,
uppercase letters, hyphens (-), dots(.) and forward slash (/).
Default: quickstart-amazon-eks/
Description: S3 key prefix for the Quick Start assets. Quick Start key prefix
can include numbers, lowercase letters, uppercase letters, hyphens (-), dots(.) and
forward slash (/).
Type: String
QSS3BucketRegion:
Default: 'us-east-1'
Description: The AWS Region where the Quick Start S3 bucket (QSS3BucketName) is
hosted. When using your own bucket, you must specify this value.
Type: String
LambdaZipsBucketName:
Description: 'OPTIONAL: Bucket Name where the lambda zip files should be placed,
if left blank a bucket will be created.'
Type: String
Default: ''
K8sSubnetIds:
Type: List<AWS::EC2::Subnet::Id>
VPCID:
Type: AWS::EC2::VPC::Id
ControlPlaneSecurityGroup:
Type: AWS::EC2::SecurityGroup::Id
Conditions:
CreateLambdaZipsBucket: !Equals
- !Ref 'LambdaZipsBucketName'
- ''
UsingDefaultBucket: !Equals [!Ref QSS3BucketName, 'aws-quickstart']
Resources:
WorkloadStack:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: !Sub
- 'https://${S3Bucket}.s3.${S3Region}.${AWS::URLSuffix}/${QSS3KeyPrefix}templates/example-workload.template.yaml'
- S3Region: !If [UsingDefaultBucket, !Ref 'AWS::Region', !Ref QSS3BucketRegion]
S3Bucket: !If [UsingDefaultBucket, !Sub '${QSS3BucketName}-${AWS::Region}', !Ref QSS3BucketName]
Parameters:
KubeManifestLambdaArn: !GetAtt KubeManifestLambda.Arn
HelmLambdaArn: !GetAtt HelmLambda.Arn
KubeConfigPath: !Ref KubeConfigPath
KubeConfigKmsContext: !Ref KubeConfigKmsContext
KubeClusterName: !Ref KubeClusterName
NodeInstanceProfile: !Ref NodeInstanceProfile
CopyZips:
Type: Custom::CopyZips
Properties:
ServiceToken: !GetAtt 'CopyZipsFunction.Arn'
DestBucket: !Ref LambdaZipsBucketName
SourceBucket: !If [UsingDefaultBucket, !Sub '${QSS3BucketName}-${AWS::Region}', !Ref QSS3BucketName]
Prefix: !Ref 'QSS3KeyPrefix'
Objects:
- functions/packages/Helm/lambda.zip
- functions/packages/DeleteBucketContents/lambda.zip
- functions/packages/KubeManifest/lambda.zip
- functions/packages/LambdaEniCleanup/lambda.zip
VPCLambdaCleanup:
Type: Custom::LambdaCleanup
Properties:
ServiceToken: !GetAtt VPCLambdaCleanupLambdaFunction.Arn
Region: !Ref "AWS::Region"
LambdaFunctionNames:
- !Ref KubeManifestLambda
VPCLambdaCleanupLambdaFunction:
DependsOn: CopyZips
Type: "AWS::Lambda::Function"
Properties:
Handler: lambda_function.lambda_handler
MemorySize: 128
Role: !GetAtt LambdaCleanUpFunctionRole.Arn
Runtime: python3.7
Timeout: 900
Code:
S3Bucket: !Ref LambdaZipsBucketName
S3Key: !Sub '${QSS3KeyPrefix}functions/packages/LambdaEniCleanup/lambda.zip'
HelmLambda:
DependsOn: CopyZips
Type: AWS::Lambda::Function
Properties:
Handler: lambda_function.lambda_handler
MemorySize: 128
Role: !GetAtt ManifestRole.Arn
Runtime: python3.6
Timeout: 900
Code:
S3Bucket: !Ref LambdaZipsBucketName
S3Key: !Sub '${QSS3KeyPrefix}functions/packages/Helm/lambda.zip'
VpcConfig:
SecurityGroupIds: [ !Ref EKSLambdaSecurityGroup ]
SubnetIds: !Ref K8sSubnetIds
KubeManifestLambda:
DependsOn: CopyZips
Type: AWS::Lambda::Function
Properties:
Handler: lambda_function.lambda_handler
MemorySize: 128
Role: !GetAtt ManifestRole.Arn
Runtime: python3.6
Timeout: 900
Code:
S3Bucket: !Ref LambdaZipsBucketName
S3Key: !Sub '${QSS3KeyPrefix}functions/packages/KubeManifest/lambda.zip'
VpcConfig:
SecurityGroupIds: [ !Ref EKSLambdaSecurityGroup ]
SubnetIds: !Ref K8sSubnetIds
DeleteBucketContentsLambda:
DependsOn: CopyZips
Type: AWS::Lambda::Function
Properties:
Handler: lambda_function.lambda_handler
MemorySize: 128
Role: !GetAtt DeleteBucketContentsRole.Arn
Runtime: python3.7
Timeout: 900
Code:
S3Bucket: !Ref LambdaZipsBucketName
S3Key: !Sub '${QSS3KeyPrefix}functions/packages/DeleteBucketContents/lambda.zip'
CopyZipsFunction:
Type: AWS::Lambda::Function
Properties:
Description: Copies objects from a source S3 bucket to a destination
Handler: index.handler
Runtime: python3.7
Role: !GetAtt CopyZipsRole.Arn
Timeout: 900
Code:
ZipFile: |
import json
import logging
import threading
import boto3
import cfnresponse
def copy_objects(source_bucket, dest_bucket, prefix, objects):
s3 = boto3.client('s3')
for o in objects:
key = prefix + o
copy_source = {
'Bucket': source_bucket,
'Key': key
}
print('copy_source: %s' % copy_source)
print('dest_bucket = %s'%dest_bucket)
print('key = %s' %key)
s3.copy_object(CopySource=copy_source, Bucket=dest_bucket,
Key=key)
def delete_objects(bucket, prefix, objects):
s3 = boto3.client('s3')
objects = {'Objects': [{'Key': prefix + o} for o in objects]}
s3.delete_objects(Bucket=bucket, Delete=objects)
def timeout(event, context):
logging.error('Execution is about to time out, sending failure response to CloudFormation')
cfnresponse.send(event, context, cfnresponse.FAILED, {}, physical_resource_id)
def handler(event, context):
physical_resource_id = None
if "PhysicalResourceId" in event.keys():
physical_resource_id = event["PhysicalResourceId"]
# make sure we send a failure to CloudFormation if the function is going to timeout
timer = threading.Timer((context.get_remaining_time_in_millis()
/ 1000.00) - 0.5, timeout, args=[event, context])
timer.start()
print('Received event: %s' % json.dumps(event))
status = cfnresponse.SUCCESS
try:
source_bucket = event['ResourceProperties']['SourceBucket']
dest_bucket = event['ResourceProperties']['DestBucket']
prefix = event['ResourceProperties']['Prefix']
objects = event['ResourceProperties']['Objects']
if event['RequestType'] == 'Delete':
delete_objects(dest_bucket, prefix, objects)
else:
copy_objects(source_bucket, dest_bucket, prefix, objects)
except Exception as e:
logging.error('Exception: %s' % e, exc_info=True)
status = cfnresponse.FAILED
finally:
timer.cancel()
cfnresponse.send(event, context, status, {}, physical_resource_id)
LambdaZipsBucket:
Type: AWS::S3::Bucket
Condition: CreateLambdaZipsBucket
LambdaCleanUpFunctionRole:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Statement:
- Action: ['sts:AssumeRole']
Effect: Allow
Principal:
Service: [lambda.amazonaws.com]
Version: '2012-10-17'
Path: /
Policies:
- PolicyName: LambdaRole
PolicyDocument:
Version: '2012-10-17'
Statement:
- Action:
- 'logs:CreateLogGroup'
- 'logs:CreateLogStream'
- 'logs:PutLogEvents'
Effect: Allow
Resource: !Sub "arn:${AWS::Partition}:logs:*:*:*"
- Action:
- 'ec2:*'
Effect: Allow
Resource: "*"
DeleteBucketContentsRole:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Principal:
Service: lambda.amazonaws.com
Action: sts:AssumeRole
ManagedPolicyArns:
- !Sub 'arn:${AWS::Partition}:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole'
Policies:
- PolicyName: deletebucketcontents
PolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Action: s3:*
Resource:
- !Sub 'arn:${AWS::Partition}:s3:::${LambdaZipsBucketName}/*'
- !Sub 'arn:${AWS::Partition}:s3:::${LambdaZipsBucketName}'
CopyZipsRole:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Principal:
Service: lambda.amazonaws.com
Action: sts:AssumeRole
ManagedPolicyArns:
- !Su 'arn:${AWS::Partition}:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole'
Policies:
- PolicyName: lambda-copier
PolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Action: s3:GetObject
Resource: !Sub
- 'arn:${AWS::Partition}:s3:::${S3Bucket}/${QSS3KeyPrefix}*'
- S3Bucket: !If [UsingDefaultBucket, !Sub '${QSS3BucketName}-${AWS::Region}', !Ref QSS3BucketName]
- Effect: Allow
Action:
- s3:PutObject
- s3:DeleteObject
Resource: !Sub 'arn:${AWS::Partition}:s3:::${LambdaZipsBucketName}/${QSS3KeyPrefix}*'
ManifestRole:
Type: "AWS::IAM::Role"
Properties:
AssumeRolePolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Principal:
Service: lambda.amazonaws.com
Action: sts:AssumeRole
Policies:
- PolicyName: eksStackPolicy
PolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Action: s3:GetObject
Resource: !Sub
- "arn:${AWS::Partition}:s3:::${BucketName}/*"
- S3Bucket: !If [UsingDefaultBucket, !Sub '${QSS3BucketName}-${AWS::Region}', !Ref QSS3BucketName]
- Effect: Allow
Action:
- logs:CreateLogGroup
- logs:CreateLogStream
- logs:PutLogEvents
- ec2:CreateNetworkInterface
- ec2:DescribeNetworkInterfaces
- ec2:DeleteNetworkInterface
Resource:
- "*"
- Action: "kms:decrypt"
Effect: Allow
Resource: "*"
- Action: "s3:GetObject"
Effect: Allow
Resource: "*"
EKSLambdaSecurityGroup:
Type: AWS::EC2::SecurityGroup
Properties:
GroupDescription: Security group for lambda to communicate with cluster API
VpcId: !Ref VPCID
ClusterControlPlaneSecurityGroupIngress:
Type: AWS::EC2::SecurityGroupIngress
Properties:
Description: Allow lambda to communicate with the cluster API Server
GroupId: !Ref ControlPlaneSecurityGroup
SourceSecurityGroupId: !Ref EKSLambdaSecurityGroup
IpProtocol: tcp
ToPort: 443
FromPort: 443
通过创建分别安装了kubectl和helm的lambda函数客户资源KubeManifestLambda和HelmLambda来工作，它们都配置有允许他们访问EKS k8s集群的角色。
然后，这些自定义资源可用于部署具有自定义值（例如in this example）的k8s清单和舵图。
KubeManifestExample:
Type: "Custom::KubeManifest"
Version: '1.0'
Properties:
# The lambda function that executes the manifest against the cluster. This is created in one of the parent stacks
ServiceToken: !Ref KubeManifestLambdaArn
# S3 path to the encrypted config file eg. s3://my-bucket/kube/config.encrypted
KubeConfigPath: !Ref KubeConfigPath
# context for KMS to use when decrypting the file
KubeConfigKmsContext: !Ref KubeConfigKmsContext
# Kubernetes manifest
Manifest:
apiVersion: v1
kind: ConfigMap
metadata:
# If name is not specified it will be automatically generated,
# and can be retrieved with !GetAtt LogicalID.name
#
# name: test
#
# if namespace is not specified, "default" namespace will be used
namespace: kube-system
data:
# examples of consuming outputs of the HelmExample resource below's output. Creates an implicit dependency, so
# this resource will only launch once the HelmExample resource has completed successfully
ServiceCatalogReleaseName: !Ref HelmExample
ServiceCatalogKubernetesServiceName: !GetAtt HelmExample.Service0
这甚至可以让您引用其他云形成资源，例如作为工作负载的一部分创建的RDS实例。
答案 1 :(得分：0)
您可以使用CloudFormation创建EKS集群和辅助节点，但是必须对集群上的任何操作使用kubectl，例如创建服务，pod，部署等..您不能为此使用CloudFormation
答案 2 :(得分：0)
如果使用 CDK，则可以使用 cluster.add_helm_chart() 或 HelmChart 类。它将在幕后创建一个 lambda。
或者您可以直接使用 https://docs.aws.amazon.com/cdk/api/v2/python/aws_cdk.lambda_layer_kubectl/README.html
创建一个 lambda