Merge branch 'develop' of https://github.com/aws-quickstart/quickstar…

…t-examples into develop
aws-quickstart · Oct 14, 2021 · 1693387 · 1693387
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diff --git a/blog-assets/eks-cluster-prework/scripts/pw-script.sh b/blog-assets/eks-cluster-prework/scripts/pw-script.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+# Install kubectl
+yum install -y unzip
+
+# TODO: Make this generic based on the EKS Version
+curl -o kubectl https://amazon-eks.s3.us-west-2.amazonaws.com/1.16.8/2020-04-16/bin/linux/amd64/kubectl
+chmod +x ./kubectl
+
+#============= INSERT YOUR PREWORK STEPS HERE ====================#
+# Confirm VNI version (Current is 1.9.0) - we could just assume this since it is a new cluster
+kubectl describe daemonset aws-node --namespace kube-system | grep Image | cut -d "/" -f 2 > /tmp/foo.txt
+# TODO: add to a kubernetes secret we output into the CloudFormation template 
+
+# Set AWS_VPC_K8S_CNI_CUSTOM_NETWORK_CFG to True
+kubectl set env daemonset aws-node -n kube-system AWS_VPC_K8S_CNI_CUSTOM_NETWORK_CFG=true
+
+# Add additional steps below 
diff --git a/blog-assets/eks-cluster-prework/templates/eks-cluster-prework.template.yaml b/blog-assets/eks-cluster-prework/templates/eks-cluster-prework.template.yaml
@@ -0,0 +1,40 @@
+AWSTemplateFormatVersion: '2010-09-09'
+Description: "Amazon EKS PreWork pattern Blog"
+Parameters:
+  PreworkJobName:
+    Type: String
+    Default: 'example-job'
+  PreworkNameSpace:
+    Type: String
+    Default: 'example-job-ns'
+  PreworkScriptBucket:
+    Type: String
+    Default: 'aws-quickstart'
+  PreworkScriptObject:
+    Type: String
+    Default: 'quickstart-examples/blog-assets/eks-cluster-prework/script/pw-script.sh'
+Resources:
+  EKSStack:
+    Type: AWS::CloudFormation::Stack
+    Properties:
+      TemplateURL: 'https://aws-quickstart.s3.us-east-1.amazonaws.com/quickstart-amazon-eks/templates/amazon-eks-entrypoint-new-vpc.template.yaml'
+      Parameters:
+        # AWS Quick Start properties
+        QSS3BucketName: aws-quickstart
+        QSS3KeyPrefix: quickstart-amazon-eks/
+        QSS3BucketRegion: us-east-1
+        # Amazon EKS Cluster properties
+        ProvisionBastionHost: Disabled
+        NodeInstanceType: t3.large
+        NumberOfNodes: 1
+        MaxNumberOfNodes: 1
+  PreworkStack:
+    Type: AWS::CloudFormation::Stack
+    Properties:
+      TemplateURL: 'https://aws-quickstart.s3.us-east-1.amazonaws.com/quickstart-examples/blog-assets/eks-cluster-prework/templates/prework.template.yaml'
+      Parameters:
+        ClusterName: !Sub "EKSStack.Outputs.EKSClusterName"
+        PreworkScriptBucket: "aws-quickstart"
+        PreworkScriptObject: !Ref "PreworkScriptObject"
+        JobName: !Ref "PreWorkJobName"
+        KubernetesNameSpace: !Ref "PreworkNamespace"
diff --git a/blog-assets/eks-cluster-prework/templates/prework.template.yaml b/blog-assets/eks-cluster-prework/templates/prework.template.yaml
@@ -0,0 +1,175 @@
+AWSTemplateFormatVersion: "2010-09-09"
+Description:
+Parameters:
+  ClusterName:
+    Type: String
+  PreworkScriptBucket:
+    Type: String
+    Default: aws-quickstart
+  PreworkScriptObject:
+    Type: String
+    Default: "quickstart-examples/blog-assets/eks-cluster-prework/scripts/pw-script.sh"
+  JobName:
+    Type: String
+    Default: ExampleJob
+  KubernetesNameSpace:
+    Type: String
+    Default: "prework-example"
+Resources:
+  KubernetesPreWorkIAMRole:
+    Type: AWS::IAM::Role
+    Properties:
+      RoleName: !Sub "pw-role-${JobName}"   
+      AssumeRolePolicyDocument: !Sub
+        - |
+          {
+            "Version": "2012-10-17",
+            "Statement": [
+              {
+                "Effect": "Allow",
+                "Principal": {
+                  "Federated": "arn:aws:iam::${AWS::AccountId}:oidc-provider/${OIDCProvider}"
+                },
+                "Action": "sts:AssumeRoleWithWebIdentity",
+                "Condition": {
+                  "StringEquals": {
+                    "${OIDCProvider}:sub": "system:serviceaccount:${NameSpace}:${ResourceName}-${JobName}"
+                  }
+                }
+              }
+            ]
+          }
+        - NameSpace: !Ref KubernetesNameSpace
+          ResourceName: "pw-service-account" 
+      Path: "/"
+      Policies:
+        - PolicyName: root
+          PolicyDocument:
+            Version: '2012-10-17'
+            Statement:
+              - Effect: Allow
+                Action:
+                  - s3:GetObject
+                Resource:
+                  -  !Sub "arn:aws:s3:::${PreworkScriptBucket}/${PreworkScriptObject}"
+  PeworkNameSpace:
+    Type: "AWSQS::Kubernetes::Resource"
+    Properties:
+      ClusterName: !Ref ClusterName
+      Manifest: !Sub |
+        kind: Namespace
+        apiVersion: v1
+        metadata:
+          name: ${KubernetesNameSpace}
+      Namespace: default
+  KubernetesRole:
+    Type: AWSQS::Kubernetes::Resource
+    Properties:
+      ClusterName: !Ref ClusterName
+      Namespace: !Ref KubernetesNameSpace
+      Manifest: !Sub
+      - |
+        apiVersion: rbac.authorization.k8s.io/v1
+        kind: Role
+        metadata:
+          labels:
+            app.kubernetes.io/name: "${ResourceName}-${JobName}"
+          name: "${ResourceName}-${JobName}"
+        # Modify for your scripts here
+        rules:
+        - apiGroups:
+          - ""
+          resources:
+          - secrets
+          verbs:
+          - create
+          - delete
+      - ResourceName: "pw-role"
+        NameSpace: !Ref "KubernetesNameSpace"
+
+  PreWorkServiceAccount:
+    Type: AWSQS::Kubernetes::Resource
+    Properties:
+      ClusterName: !Ref ClusterName
+      Namespace: !Ref KubernetesNameSpace
+      Manifest: !Sub
+        - |
+          apiVersion: v1
+          kind: ServiceAccount
+          metadata:
+            labels:
+              app.kubernetes.io/name: "${ResourceName}-${JobName}"
+            annotations:
+              eks.amazonaws.com/role-arn: arn:aws:iam::${AWS::AccountId}:role/${RoleName}-${JobName}
+            name: "${ResourceName}-${JobName}"
+            namespace: ${NameSpace}
+        - ResourceName: "pw-service-account"
+          NameSpace: !Ref KubernetesNameSpace
+          RoleName: !Ref "PreWorkIAMRole"
+
+  PreWorkClusterRoleBinding:
+    Type: AWSQS::Kubernetes::Resource
+    Properties:
+      ClusterName: !Ref ClusterName
+      Namespace: !Ref KubernetesNameSpace
+      Manifest: !Sub
+        - |
+          apiVersion: rbac.authorization.k8s.io/v1
+          kind: RoleBinding
+          metadata:
+            labels:
+              app.kubernetes.io/name: "${ResourceName}-${JobName}"
+            name: "${ResourceName}-${JobName}"
+          roleRef:
+            apiGroup: rbac.authorization.k8s.io
+            kind: Role
+            name: "pw-role-${JobName}"
+          subjects:
+          - kind: ServiceAccount
+            name: "pw-service-account-${JobName}"
+            namespace: ${NameSpace}
+        - ResourceName: "pw-role-binding-${JobName}"
+          NameSpace: !Ref KubernetesNameSpace
+
+  PreWorkJob:
+    DependsOn: [ PreWorkIAMRole, PreWorkRole, PreWorkServiceAccount, PreWorkRoleBinding ]
+    Type: AWSQS::Kubernetes::Resource
+    Properties:
+      ClusterName: !Ref ClusterName
+      Namespace: !Ref KubernetesNameSpace
+      Manifest: !Sub
+        - |
+          apiVersion: batch/v1
+          kind: Job
+          metadata:
+            name: "${ResourceName}-${JobName}"
+            namespace: ${NameSpace}
+          spec:
+            template:
+              spec:
+                containers:
+                - name: ${ResourceName}
+                  image: amazonlinux:2
+                  command: ["/bin/bash","-c"]
+                  args:
+                  - >
+                    sleep 15;
+                    yum update -y;
+                    yum install -y awscli;
+                    export AWS_REGION=${AWS::Region};
+                    export NS=${NameSpace};
+                    aws sts get-caller-identity;
+                    aws s3 cp ${!S3_SCRIPT_URL} ./prework-script.sh &&
+                    chmod +x ./prework-script.sh &&
+                    ./prework-script.sh
+                  env:
+                  - name: S3_SCRIPT_URL
+                    value: ${S3ScriptURL}
+                  - name: AWS_REGION
+                    value: ${AWS::Region}
+                serviceAccountName: "pw-service-account-${JobName}"
+                restartPolicy: Never
+            backoffLimit: 4
+        - ResourceName: "pw-job"
+          NameSpace: !Ref "KubernetesNameSpace"
+          S3ScriptURL: !Sub "s3://${PreworkScriptBucket}/${PreworkScriptObject}"