Replace m5.large -> t3.medium as default instance type

README.md

@@ -168,7 +168,7 @@ eksctl create cluster
 A cluster will be created with default parameters
 
 - exciting auto-generated name, e.g. "fabulous-mushroom-1527688624"
-- 2x `m5.large` nodes (this instance type suits most common use-cases, and is good value for money)
+- 2x `t3.medium` nodes (this instance type suits most common use-cases, and is good value for money)
 - use official AWS EKS AMI
 - `us-west-2` region
 - dedicated VPC (check your quotas)

docs/proposal-003-extending-use-of-config-file.md

@@ -30,10 +30,10 @@ metadata:
 
 nodeGroups:
   - name: ng1-public
-    instanceType: m5.xlarge
+    instanceType: t3.large
     desiredCapacity: 4
   - name: ng2-private
-    instanceType: m5.large
+    instanceType: t3.medium
     desiredCapacity: 10
     privateNetworking: true
 ```
@@ -56,18 +56,18 @@ metadata:
 
 nodeGroups:
   - name: ng1-public
-    instanceType: m5.xlarge
+    instanceType: t3.large
     desiredCapacity: 4
   - name: ng2-private
-    instanceType: m5.large
+    instanceType: t3.medium
     desiredCapacity: 10
     privateNetworking: true
   - name: ng3-dev
-    instanceType: m4.large
+    instanceType: t3.large
     desiredCapacity: 2
     privateNetworking: true
   - name: ng2-test
-    instanceType: m5.large
+    instanceType: t3.medium
     desiredCapacity: 4
     privateNetworking: true
 ```

docs/proposal-004_cost-estimation.md

@@ -74,7 +74,7 @@ Examples:
 ```
 [ℹ]  using region eu-west-1
 [ℹ]  using "ami-0ce0ec06e682ee10e" for nodes
-[ℹ]  2 nodes m5.large
+[ℹ]  2 nodes t3.medium
 [ℹ]  EBS volumes 20go
 [ℹ]  free tier "yes"
 [ℹ]  usage type "utilization"

pkg/apis/eksctl.io/v1alpha5/instance_selector_test.go

@@ -43,27 +43,27 @@ var _ = Describe("Instance Selector Validation", func() {
 						VCPUs:  2,
 						Memory: "4",
 					},
-					InstanceType: "m5.large",
+					InstanceType: "t3.medium",
 				},
 			},
 			errMsg: `instanceType should be "mixed" or unset`,
 		}),
 		Entry("invalid use of instanceSelector and instancesDistribution", &instanceSelectorCase{
 			ng: &NodeGroup{
 				NodeGroupBase: &NodeGroupBase{
-					InstanceType:     "m5.large",
+					InstanceType:     "t3.medium",
 					InstanceSelector: &InstanceSelector{},
 				},
 				InstancesDistribution: &NodeGroupInstancesDistribution{
-					InstanceTypes: []string{"m5.large"},
+					InstanceTypes: []string{"t3.medium"},
 				},
 			},
 			errMsg: `instanceType should be "mixed" or unset`,
 		}),
 		Entry("instancesDistribution without instanceTypes and instanceSelector", &instanceSelectorCase{
 			ng: &NodeGroup{
 				NodeGroupBase: &NodeGroupBase{
-					InstanceType:     "m5.large",
+					InstanceType:     "t3.medium",
 					InstanceSelector: &InstanceSelector{},
 				},
 				InstancesDistribution: &NodeGroupInstancesDistribution{},
@@ -79,7 +79,7 @@ var _ = Describe("Instance Selector Validation", func() {
 					},
 				},
 				InstancesDistribution: &NodeGroupInstancesDistribution{
-					InstanceTypes: []string{"m5.large"},
+					InstanceTypes: []string{"t3.medium"},
 				},
 			},
 		}),

pkg/apis/eksctl.io/v1alpha5/types.go

@@ -237,7 +237,7 @@ const (
 
 const (
 	// DefaultNodeType is the default instance type to use for nodes
-	DefaultNodeType = "m5.large"
+	DefaultNodeType = "t3.medium"
 
 	// DefaultNodeCount defines the default number of nodes to be created
 	DefaultNodeCount = 2

pkg/cfn/builder/cluster_test.go

@@ -715,7 +715,7 @@ var _ = Describe("Cluster Template Builder", func() {
 				}
 				cfg.Outpost = &api.Outpost{
 					ControlPlaneOutpostARN:   "arn:aws:outposts:us-west-2:1234:outpost/op-1234",
-					ControlPlaneInstanceType: "m5.large",
+					ControlPlaneInstanceType: "t3.medium",
 				}
 
 				var output *ec2.DescribeVpcEndpointServicesOutput

pkg/cfn/builder/managed_nodegroup_test.go

@@ -386,7 +386,7 @@ func TestManagedNodeGroupNodeRepairConfig(t *testing.T) {
 			ng := &api.ManagedNodeGroup{
 				NodeGroupBase: &api.NodeGroupBase{
 					Name:         "test-ng",
-					InstanceType: "m5.large",
+					InstanceType: "t3.medium",
 				},
 				NodeRepairConfig: tt.nodeRepairConfig,
 			}

pkg/cfn/builder/network_interfaces_test.go

@@ -28,7 +28,7 @@ func TestBuildNetworkInterfaces(t *testing.T) {
 	}{
 		{
 			name:          "non-EFA nodegroup",
-			instanceTypes: []string{"m5.large"},
+			instanceTypes: []string{"t3.medium"},
 			efaEnabled:    false,
 			securityGroups: []*gfnt.Value{
 				gfnt.NewString("sg-12345"),
@@ -106,7 +106,7 @@ func TestBuildNetworkInterfaces(t *testing.T) {
 		},
 		{
 			name:          "EFA nodegroup with non-EFA instance type",
-			instanceTypes: []string{"m5.large"},
+			instanceTypes: []string{"t3.medium"},
 			efaEnabled:    true,
 			securityGroups: []*gfnt.Value{
 				gfnt.NewString("sg-12345"),
@@ -120,7 +120,7 @@ func TestBuildNetworkInterfaces(t *testing.T) {
 					},
 				},
 			},
-			expectedError: "instance type m5.large does not support EFA",
+			expectedError: "instance type t3.medium does not support EFA",
 		},
 		{
 			name:          "EFA nodegroup with default security groups (1.33+ scenario)",

pkg/cfn/builder/nodegroup_test.go

@@ -787,7 +787,7 @@ var _ = Describe("Unmanaged NodeGroup Template Builder", func() {
 				Expect(properties.LaunchTemplateData.IamInstanceProfile.Arn).To(Equal(makeIamInstanceProfileRef()))
 				Expect(properties.LaunchTemplateData.ImageID).To(Equal("ami-123"))
 				Expect(properties.LaunchTemplateData.UserData).To(Equal("lovely data right here"))
-				Expect(properties.LaunchTemplateData.InstanceType).To(Equal("m5.large"))
+				Expect(properties.LaunchTemplateData.InstanceType).To(Equal("t3.medium"))
 				Expect(properties.LaunchTemplateData.MetadataOptions.HTTPPutResponseHopLimit).To(Equal(float64(2)))
 				Expect(properties.LaunchTemplateData.MetadataOptions.HTTPTokens).To(Equal("required"))
 				Expect(properties.LaunchTemplateData.TagSpecifications).To(HaveLen(3))

pkg/cfn/builder/testdata/launch_template/launch_template_additional_volumes.json

@@ -99,7 +99,7 @@
       "AmiType": "AL2023_x86_64_STANDARD",
       "ClusterName": "lt",
       "InstanceTypes": [
-        "m5.large"
+        "t3.medium"
       ],
       "Labels": {
         "alpha.eksctl.io/cluster-name": "lt",

pkg/cfn/builder/testdata/launch_template/launch_template_additional_volumes_missing_size.json

@@ -98,7 +98,7 @@
       "AmiType": "AL2023_x86_64_STANDARD",
       "ClusterName": "lt",
       "InstanceTypes": [
-        "m5.large"
+        "t3.medium"
       ],
       "Labels": {
         "alpha.eksctl.io/cluster-name": "lt",

pkg/cfn/builder/testdata/launch_template/ssh_disabled.json

@@ -93,7 +93,7 @@
         "alpha.eksctl.io/cluster-name": "lt",
         "alpha.eksctl.io/nodegroup-name": "ssh-disabled"
       },
-      "InstanceTypes": ["m5.large"],
+      "InstanceTypes": ["t3.medium"],
       "NodeRole": {
         "Fn::GetAtt": [
           "NodeInstanceRole",

pkg/cfn/builder/testdata/launch_template/ssh_enabled.json

@@ -96,7 +96,7 @@
                 "alpha.eksctl.io/cluster-name": "lt",
                 "alpha.eksctl.io/nodegroup-name": "ssh-enabled"
             },
-            "InstanceTypes": ["m5.large"],
+            "InstanceTypes": ["t3.medium"],
             "NodeRole": {
                 "Fn::GetAtt": [
                     "NodeInstanceRole",

pkg/cfn/template/testdata/nodegroup-example-1.json

@@ -136,7 +136,7 @@
                         }
                     },
                     "ImageId": "ami-09729f03d2b24317c",
-                    "InstanceType": "m5.large",
+                    "InstanceType": "t3.medium",
                     "KeyName": "eksctl-test-nodegroup-n5-bd:d8:ab:d8:3a:09:95:22:91:61:9f:1c:92:b5:dc:2e",
                     "MetadataOptions": {
                         "HttpPutResponseHopLimit": 2,

pkg/ctl/cmdutils/filter/nodegroup_filter_test.go

@@ -378,7 +378,7 @@ const expected = `
 		  {
 			  "name": "test-ng1a",
 			  "amiFamily": "AmazonLinux2023",
-			  "instanceType": "m5.large",
+			  "instanceType": "t3.medium",
 			  "privateNetworking": false,
 			  "securityGroups": {
 			    "withShared": true,
@@ -424,7 +424,7 @@ const expected = `
 		  {
 			  "name": "test-ng2a",
 			  "amiFamily": "AmazonLinux2023",
-			  "instanceType": "m5.large",
+			  "instanceType": "t3.medium",
 			  "privateNetworking": false,
 			  "securityGroups": {
 			    "withShared": true,
@@ -515,7 +515,7 @@ const expected = `
 		  {
 			  "name": "test-ng1b",
 			  "amiFamily": "AmazonLinux2023",
-			  "instanceType": "m5.large",
+			  "instanceType": "t3.medium",
 			  "privateNetworking": false,
 			  "securityGroups": {
 			    "withShared": true,
@@ -609,7 +609,7 @@ const expected = `
 		  {
 			  "name": "test-ng3b",
 			  "amiFamily": "AmazonLinux2023",
-			  "instanceType": "m5.large",
+			  "instanceType": "t3.medium",
 			  "privateNetworking": false,
 			  "securityGroups": {
 			    "attachIDs": [

pkg/ctl/create/cluster_test.go

@@ -102,7 +102,7 @@ var _ = Describe("create cluster", func() {
 			Entry("with authenticator-role-arn flag", "--authenticator-role-arn", "arn::dummy::123/role"),
 			Entry("with auto-kubeconfig flag", "--auto-kubeconfig"),
 			// common node group flags
-			Entry("with node-type flag", "--node-type", "m5.large"),
+			Entry("with node-type flag", "--node-type", "t3.medium"),
 			Entry("with nodes flag", "--nodes", "2"),
 			Entry("with nodes-min flag", "--nodes-min", "2"),
 			Entry("with nodes-max flag", "--nodes-max", "2"),
@@ -180,7 +180,7 @@ var _ = Describe("create cluster", func() {
 			Entry("with authenticator-role-arn flag", "--authenticator-role-arn", "arn::dummy::123/role"),
 			Entry("with auto-kubeconfig flag", "--auto-kubeconfig"),
 			// common node group flags
-			Entry("with node-type flag", "--node-type", "m5.large"),
+			Entry("with node-type flag", "--node-type", "t3.medium"),
 			Entry("with nodes flag", "--nodes", "2"),
 			Entry("with nodes-min flag", "--nodes-min", "2"),
 			Entry("with nodes-max flag", "--nodes-max", "2"),

pkg/ctl/create/nodegroup_test.go

@@ -35,7 +35,7 @@ var _ = Describe("create nodegroup", func() {
 			Entry("with nodegroup name with a hyphen as flag", "--name", "nodegroup-name"),
 			Entry("with nodegroup name as argument", "nodegroupName"),
 			Entry("with nodegroup name with a hyphen as argument", "nodegroup-name"),
-			Entry("with node-type flag", "--node-type", "m5.large"),
+			Entry("with node-type flag", "--node-type", "t3.medium"),
 			Entry("with nodes flag", "--nodes", "2"),
 			Entry("with nodes-min flag", "--nodes-min", "2"),
 			Entry("with nodes-max flag", "--nodes-max", "2"),
@@ -121,7 +121,7 @@ var _ = Describe("create nodegroup", func() {
 			Entry("with nodegroup name with a hyphen as flag", "--name", "nodegroup-name"),
 			Entry("with nodegroup name as argument", "nodegroupName"),
 			Entry("with nodegroup name with a hyphen as argument", "nodegroup-name"),
-			Entry("with node-type flag", "--node-type", "m5.large"),
+			Entry("with node-type flag", "--node-type", "t3.medium"),
 			Entry("with nodes flag", "--nodes", "2"),
 			Entry("with nodes-min flag", "--nodes-min", "2"),
 			Entry("with nodes-max flag", "--nodes-max", "2"),

pkg/eks/instance_selector_test.go

@@ -159,8 +159,8 @@ var _ = Describe("Instance Selector", func() {
 				VCPUs:  2,
 				Memory: "4",
 			},
-			createFakeInstanceSelector: makeInstanceSelector("m5.large", "m5.xlarge"),
-			expectedInstanceTypes:      []string{"m5.large", "m5.xlarge"},
+			createFakeInstanceSelector: makeInstanceSelector("t3.medium", "t3.large"),
+			expectedInstanceTypes:      []string{"t3.medium", "t3.large"},
 		}),
 
 		Entry("mismatching instanceTypes and instance selector criteria for unmanaged nodegroup", instanceSelectorCase{

pkg/eks/testdata/bad-field-1.json

@@ -6,6 +6,6 @@
     "region": "eu-north-1"
   },
   "nodeGroups": [
-    { "name": "ng-1", "instanceType": "m5.large", "nodes": 10 }
+    { "name": "ng-1", "instanceType": "t3.medium", "nodes": 10 }
   ]
 }

pkg/eks/testdata/example.json

@@ -6,6 +6,6 @@
     "region": "eu-north-1"
   },
   "nodeGroups": [
-    { "name": "ng-1", "instanceType": "m5.large", "desiredCapacity": 10 }
+    { "name": "ng-1", "instanceType": "t3.medium", "desiredCapacity": 10 }
   ]
 }

pkg/eks/testdata/old-version.json

@@ -6,6 +6,6 @@
     "region": "eu-north-1"
   },
   "nodeGroups": [
-    { "name": "ng-1", "instanceType": "m5.large", "desiredCapacity": 10 }
+    { "name": "ng-1", "instanceType": "t3.medium", "desiredCapacity": 10 }
   ]
 }

pkg/utils/kubeconfig/kubeconfig_test.go

@@ -179,7 +179,7 @@ var _ = Describe("Kubeconfig", func() {
 			NodeGroups: []*eksctlapi.NodeGroup{
 				{
 					NodeGroupBase: &eksctlapi.NodeGroupBase{
-						InstanceType:      "m5.large",
+						InstanceType:      "t3.medium",
 						AvailabilityZones: []string{"us-west-2b", "us-west-2a", "us-west-2c"},
 						PrivateNetworking: false,
 						SSH: &eksctlapi.NodeGroupSSH{

userdocs/src/getting-started.md

@@ -33,7 +33,7 @@ contributions from the community.
     A cluster will be created with default parameters:
 
     - exciting auto-generated name, e.g., `fabulous-mushroom-1527688624`
-    - two `m5.large` worker nodes (this instance type suits most common use-cases, and is good value for money)
+    - two `t3.medium` worker nodes (this instance type suits most common use-cases, and is good value for money)
     - use the official AWS [EKS AMI](https://github.com/awslabs/amazon-eks-ami)
     - `us-west-2` region
     - a dedicated VPC (check your quotas)
@@ -88,10 +88,10 @@ metadata:
 
 nodeGroups:
   - name: ng-1
-    instanceType: m5.large
+    instanceType: t3.medium
     desiredCapacity: 10
   - name: ng-2
-    instanceType: m5.xlarge
+    instanceType: t3.large
     desiredCapacity: 2
 ```
 

userdocs/src/usage/cloudwatch-cluster-logging.md

@@ -112,7 +112,7 @@ metadata:
 
 nodeGroups:
   - name: ng-1
-    instanceType: m5.large
+    instanceType: t3.medium
     desiredCapacity: 1
 
 cloudWatch:

userdocs/src/usage/container-runtime.md

@@ -47,7 +47,7 @@ The `overrideBootstrapCommand` option requires that you specify an AMI for the m
 managedNodeGroups:
   - name: m-ng-1
     ami: ami-XXXXXXXXXXXXXX
-    instanceType: m5.large
+    instanceType: t3.medium
     overrideBootstrapCommand: |
       #!/bin/bash
       /etc/eks/bootstrap.sh <cluster-name> <other flags> --container-runtime containerd

userdocs/src/usage/creating-and-managing-clusters.md

@@ -9,7 +9,7 @@ eksctl create cluster
 ```
 
 That will create an EKS cluster in your default region (as specified by your AWS CLI configuration) with one managed
-nodegroup containing two m5.large nodes.
+nodegroup containing two t3.medium nodes.
 
 ???+ note
     eksctl now creates a managed nodegroup by default when a config file isn't used. To create a self-managed nodegroup,
@@ -47,13 +47,13 @@ metadata:
 
 nodeGroups:
   - name: ng-1
-    instanceType: m5.large
+    instanceType: t3.medium
     desiredCapacity: 10
     volumeSize: 80
     ssh:
       allow: true # will use ~/.ssh/id_rsa.pub as the default ssh key
   - name: ng-2
-    instanceType: m5.xlarge
+    instanceType: t3.large
     desiredCapacity: 2
     volumeSize: 100
     ssh: