sigs.k8s.io/cluster-api-provider-aws@v1.5.5/cmd/clusterawsadm/cloudformation/bootstrap/cluster_api_node.go (about)

     1  /*
     2  Copyright 2020 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8  	http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package bootstrap
    18  
    19  import (
    20  	infrav1 "sigs.k8s.io/cluster-api-provider-aws/api/v1beta1"
    21  	iamv1 "sigs.k8s.io/cluster-api-provider-aws/iam/api/v1beta1"
    22  )
    23  
    24  func (t Template) secretPolicy(secureSecretsBackend infrav1.SecretBackend) iamv1.StatementEntry {
    25  	switch secureSecretsBackend {
    26  	case infrav1.SecretBackendSecretsManager:
    27  		return iamv1.StatementEntry{
    28  			Effect: iamv1.EffectAllow,
    29  			Resource: iamv1.Resources{
    30  				"arn:*:secretsmanager:*:*:secret:aws.cluster.x-k8s.io/*",
    31  			},
    32  			Action: iamv1.Actions{
    33  				"secretsmanager:DeleteSecret",
    34  				"secretsmanager:GetSecretValue",
    35  			},
    36  		}
    37  	case infrav1.SecretBackendSSMParameterStore:
    38  		return iamv1.StatementEntry{
    39  			Effect: iamv1.EffectAllow,
    40  			Resource: iamv1.Resources{
    41  				"arn:*:ssm:*:*:parameter/cluster.x-k8s.io/*",
    42  			},
    43  			Action: iamv1.Actions{
    44  				"ssm:DeleteParameter",
    45  				"ssm:GetParameter",
    46  			},
    47  		}
    48  	}
    49  	return iamv1.StatementEntry{}
    50  }
    51  
    52  func (t Template) sessionManagerPolicy() iamv1.StatementEntry {
    53  	return iamv1.StatementEntry{
    54  		Effect:   iamv1.EffectAllow,
    55  		Resource: iamv1.Resources{iamv1.Any},
    56  		Action: iamv1.Actions{
    57  			"ssm:UpdateInstanceInformation",
    58  			"ssmmessages:CreateControlChannel",
    59  			"ssmmessages:CreateDataChannel",
    60  			"ssmmessages:OpenControlChannel",
    61  			"ssmmessages:OpenDataChannel",
    62  			"s3:GetEncryptionConfiguration",
    63  		},
    64  	}
    65  }
    66  
    67  func (t Template) nodeManagedPolicies() []string {
    68  	policies := t.Spec.Nodes.ExtraPolicyAttachments
    69  
    70  	if !t.Spec.EKS.Disable {
    71  		policies = append(policies,
    72  			t.generateAWSManagedPolicyARN("AmazonEKSWorkerNodePolicy"),
    73  			t.generateAWSManagedPolicyARN("AmazonEKS_CNI_Policy"),
    74  		)
    75  	}
    76  
    77  	if t.Spec.Nodes.EC2ContainerRegistryReadOnly {
    78  		policies = append(policies, t.generateAWSManagedPolicyARN("AmazonEC2ContainerRegistryReadOnly"))
    79  	}
    80  
    81  	return policies
    82  }
    83  
    84  func (t Template) nodePolicy() *iamv1.PolicyDocument {
    85  	policyDocument := t.cloudProviderNodeAwsPolicy()
    86  	for _, secureSecretsBackend := range t.Spec.SecureSecretsBackends {
    87  		policyDocument.Statement = append(
    88  			policyDocument.Statement,
    89  			t.secretPolicy(secureSecretsBackend),
    90  		)
    91  	}
    92  	policyDocument.Statement = append(
    93  		policyDocument.Statement,
    94  		t.sessionManagerPolicy(),
    95  	)
    96  
    97  	return policyDocument
    98  }
    99  
   100  func (t Template) generateAWSManagedPolicyARN(name string) string {
   101  	return "arn:" + t.Spec.Partition + ":iam::aws:policy/" + name
   102  }