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kubernetes.yaml
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---
AWSTemplateFormatVersion: '2010-09-09'
Parameters:
ClusterState:
Type: String
Description: |
etcd cluster state: If this option is set to existing, etcd
will attempt to join the existing cluster. If the wrong value is set, etcd
will attempt to start but fail safely.
Default: existing
KeyName:
Description: Existing EC2 KeyPair for SSH access.
Type: AWS::EC2::KeyPair::KeyName
ConstraintDescription: must be the name of an existing EC2 KeyPair.
Default: cfn-kubernetes
DomainName:
Type: String
ParentZoneID:
Type: String
ControllerSubdomain:
Description: Subdomain for controller ELB, relative to DomainName
Type: String
ControllerInstanceType:
Description: EC2 instance type for controller nodes.
Type: String
Default: m3.medium
ControllerPoolSize:
Type: Number
Default: 3
KubeVersion:
Type: String
Default: 1.9.2
KubeletImageTag:
Type: String
Default: v1.9.2_coreos.0
KubeadmVersion:
Type: String
Default: v1.9.2
KubeadmURLRoot:
Type: String
Description: No trailing /
Default: https://storage.googleapis.com/kubernetes-release/release
KubeadmURLPath:
Type: String
Description: No leading /
Default: bin/linux/amd64/kubeadm
WorkerInstanceType:
Description: EC2 instance type for controller nodes.
Type: String
Default: c5.4xlarge
WorkerPoolSizeMin:
Description: Number of Worker Nodes
Type: Number
Default: 2
WorkerPoolSizeMax:
Description: Number of Worker Nodes
Type: Number
Default: 25
WorkerVolumeSize:
Description: Worker volume size in GB
Type: Number
Default: 100
VPCID:
Description: Existing VPC with attached internet gateway to use for this cluster.
Type: AWS::EC2::VPC::Id
InternetGateway:
Description: The InternetGateway attached to the VPC
Type: String
PublicSubnetCidrPrefix:
Type: String
PublicSubnetCidrASuffix:
Type: String
Default: 0.0/23
PublicSubnetCidrBSuffix:
Type: String
Default: 2.0/23
PublicSubnetCidrCSuffix:
Type: String
Default: 4.0/23
PrivateSubnetCidrPrefix:
Type: String
PrivateSubnetCidrASuffix:
Type: String
Default: 0.0/23
PrivateSubnetCidrBSuffix:
Type: String
Default: 2.0/23
PrivateSubnetCidrCSuffix:
Type: String
Default: 4.0/23
SubnetAZA:
Type: String
Default: us-east-1b
SubnetAZB:
Type: String
Default: us-east-1c
SubnetAZC:
Type: String
Default: us-east-1d
assetBucket:
Type: String
Mappings:
Assets:
etcd:
# FIXME ExecStartPre=/bin/chown might not be needed since we bumped
# ignition version.
unit: |
[Unit]
Requires=coreos-metadata.service
After=coreos-metadata.service
[Service]
EnvironmentFile=/run/metadata/coreos
EnvironmentFile=/etc/etcd.env
Environment="RKT_RUN_ARGS=--volume etcd-ssl,kind=host,source=/etc/ssl/etcd \
--mount volume=etcd-ssl,target=/etc/ssl/etcd"
ExecStartPre=/bin/chown -R etcd:etcd /etc/ssl/etcd
# member-add fails if its run again before etcd comes up, so we ignore
# the error for now. A failure to add a peer will result in etcd
# failing and we can monitor that.
ExecStartPre=-/etc/etcd-member-add "${COREOS_EC2_HOSTNAME}"
ExecStart=
ExecStart=/usr/lib/coreos/etcd-wrapper $ETCD_OPTS \
--name="${COREOS_EC2_HOSTNAME}" \
--listen-peer-urls="https://${COREOS_EC2_IPV4_LOCAL}:2380" \
--listen-client-urls="https://0.0.0.0:2379" \
--initial-advertise-peer-urls="https://${COREOS_EC2_HOSTNAME}:2380" \
--advertise-client-urls="https://${COREOS_EC2_HOSTNAME}:2379" \
--trusted-ca-file=/etc/ssl/etcd/ca.crt \
--cert-file=/etc/ssl/etcd/server.crt \
--key-file=/etc/ssl/etcd/server.key \
--peer-cert-file=/etc/ssl/etcd/peer.crt \
--peer-key-file=/etc/ssl/etcd/peer.key \
--peer-trusted-ca-file=/etc/ssl/etcd/ca.crt \
--client-cert-auth=true \
--peer-client-cert-auth=true
ExecStop=
ExecStop=/etc/etcd-member-remove "${COREOS_EC2_HOSTNAME}"
ExecStop=-/usr/bin/rkt stop --uuid-file=/var/lib/coreos/etcd-member-wrapper.uuid
etcdctlWrapper: |
#!/bin/bash
. /etc/etcd.env
etcdctl -D ${ETCD_DISCOVERY_SRV} \
--ca-file=/etc/ssl/etcd/ca.crt \
--cert-file=/etc/ssl/etcd/peer.crt \
--key-file=/etc/ssl/etcd/peer.key \
--no-sync "$@"
etcdMemberAdd: |
#!/bin/bash
set -euo pipefail
. /run/metadata/coreos
if [[ "$ETCD_INITIAL_CLUSTER_STATE" == "new" ]]; then
echo "New cluster, exiting"
exit 0
else
echo "Adding ourself to cluster"
/etc/etcdctl-wrapper member add "$COREOS_EC2_HOSTNAME" "https://$COREOS_EC2_HOSTNAME:2380"
fi
etcdMemberRemove: |
#!/bin/bash
set -euo pipefail
hostname=$1
ID=$(/etc/etcdctl-wrapper member list | awk -F: "/name=$hostname / { print \$1 }")
/etc/etcdctl-wrapper member remove "$ID"
kubelet:
unit: |
[Unit]
Description=Kubernetes Kubelet Server
Documentation=https://github.com/kubernetes/kubernetes
Requires=coreos-metadata.service
After=coreos-metadata.service
[Service]
EnvironmentFile=/etc/kubernetes.env
Environment="RKT_RUN_ARGS=--uuid-file-save=/var/run/kubelet-pod.uuid \
--volume dns,kind=host,source=/etc/resolv.conf \
--volume cni-opt,kind=host,source=/opt/cni \
--volume cni-etc,kind=host,source=/etc/cni \
--mount volume=dns,target=/etc/resolv.conf \
--mount volume=cni-opt,target=/opt/cni \
--mount volume=cni-etc,target=/etc/cni"
ExecStartPre=/bin/mkdir -p /opt/cni /etc/cni
ExecStartPre=-/usr/bin/rkt rm --uuid-file=/var/run/kubelet-pod.uui
ExecStart=/usr/lib/coreos/kubelet-wrapper \
--kubeconfig=/etc/kubernetes/admin.conf \
--pod-manifest-path=/etc/kubernetes/manifests \
--cloud-provider=aws \
--cloud-config=/etc/kubernetes/cloud-config \
--network-plugin=cni \
--pod-cidr=10.244.0.0/16 \
--cluster-dns=10.96.0.10 \
--cluster-domain=${KUBELET_CLUSTER_DOMAIN} \
--allow-privileged
ExecStop=-/usr/bin/rkt stop --uuid-file=/var/run/kubelet-pod.uuid
[Install]
WantedBy=multi-user.target
kubeadm:
unit: |
[Unit]
After=etcd-member.service network-online.target
Description=Kubeadm init
Documentation=https://github.com/kubernetes/kubernetes
[Service]
Type=oneshot
EnvironmentFile=/run/metadata/coreos
EnvironmentFile=/etc/kubernetes.env
ExecStartPre=/bin/sh -c 'grep nodeName: /etc/kubernetes/controller.yaml \
&& exit 0; echo "nodeName: $COREOS_EC2_HOSTNAME" \
>> /etc/kubernetes/controller.yaml'
ExecStart=/opt/bin/kubeadm init --config /etc/kubernetes/controller.yaml \
--ignore-preflight-errors=KubeletVersion,Port-10250
ExecStartPost=/opt/bin/patch-kube-proxy-cm https://${KUBELET_API_SERVERS}:6443
ExecStartPost=/etc/etcd-signal-health
[Install]
WantedBy=multi-user.target
patchKubeProxyCM: |
#!/bin/bash
set -euo pipefail
API=$1
shift
KUBECONFIG=${KUBECONFIG:-/etc/kubernetes/admin.conf}
configMapPath="api/v1/namespaces/kube-system/configmaps/kube-proxy"
TMP=$(mktemp -d)
trap "rm -r '$TMP'" EXIT
kc_get() {
awk '/'$1'/ { print $2 }' "$KUBECONFIG" \
| base64 -d
}
http() {
path=$1
shift
curl --cacert "$TMP/ca.crt" \
--cert "$TMP/client.crt" \
--key "$TMP/client.key" "$@" "$API/$path"
}
umask 177
kc_get certificate-authority-data > "$TMP/ca.crt"
kc_get client-key-data > "$TMP/client.key"
kc_get client-certificate-data > "$TMP/client.crt"
conf=$(http $configMapPath \
| jq '.data["kubeconfig.conf"]' \
| sed 's|server: http[^\\\n]*|server: '$API'|')
cat <<EOF | http $configMapPath -X PATCH \
-H 'Content-Type: application/strategic-merge-patch+json' \
-d @-
{ "data": { "kubeconfig.conf": $conf } }'
EOF
# Generate with:
# curl -L https://coreos.com/dist/aws/aws-stable.json \
# | jq 'to_entries|map(select(.key != "release_info"))|from_entries' \
# | json2yaml | sed 's/^/ /'
RegionToImageMap:
ap-northeast-1:
hvm: ami-8f65c4e9
pv: ami-7d69c81b
ap-northeast-2:
hvm: ami-5901a437
pv: ami-6b02a705
ap-south-1:
hvm: ami-8ad89ae5
pv: ami-1fd89a70
ap-southeast-1:
hvm: ami-64f1b007
pv: ami-c4f2b3a7
ap-southeast-2:
hvm: ami-6e89660c
pv: ami-27896645
ca-central-1:
hvm: ami-91853df5
pv: ami-fd853d99
cn-north-1:
hvm: ami-d727f4ba
pv: ami-d627f4bb
eu-central-1:
hvm: ami-ea53e885
pv: ami-7350eb1c
eu-west-1:
hvm: ami-bbaf0ac2
pv: ami-a5ae0bdc
eu-west-2:
hvm: ami-c3978aa7
pv: ami-fa908d9e
sa-east-1:
hvm: ami-181c6474
pv: ami-051b6369
us-east-1:
hvm: ami-a89d3ad2
pv: ami-eb9b3c91
us-east-2:
hvm: ami-1c81ad79
pv: ami-2280ac47
us-gov-west-1:
hvm: ami-644dc005
pv: ami-674dc006
us-west-1:
hvm: ami-23566a43
pv: ami-cf566aaf
us-west-2:
hvm: ami-7c488704
pv: ami-af4d82d7
Conditions:
isExisting: !Equals [ {"Ref": "ClusterState"}, "existing" ]
Resources:
### Private Subnets ###
PrivateSubnetA:
Type: AWS::EC2::Subnet
Properties:
VpcId: !Ref VPCID
CidrBlock: !Join [ "", [ !Ref PrivateSubnetCidrPrefix, !Ref PublicSubnetCidrASuffix ] ]
AvailabilityZone: !Ref SubnetAZA
Tags:
- Key: KubernetesCluster
Value: !Ref DomainName
- Key: kubernetes.io/role/internal-elb
Value: 1
- Key: !Join [ "/", [ "kubernetes.io/cluster", !Ref DomainName ] ]
Value: owned
PrivateSubnetB:
Type: AWS::EC2::Subnet
Properties:
VpcId: !Ref VPCID
CidrBlock: !Join [ "", [ !Ref PrivateSubnetCidrPrefix, !Ref PublicSubnetCidrBSuffix ] ]
AvailabilityZone: !Ref SubnetAZB
Tags:
- Key: KubernetesCluster
Value: !Ref DomainName
- Key: kubernetes.io/role/internal-elb
Value: 1
- Key: !Join [ "/", [ "kubernetes.io/cluster", !Ref DomainName ] ]
Value: owned
PrivateSubnetC:
Type: AWS::EC2::Subnet
Properties:
VpcId: !Ref VPCID
CidrBlock: !Join [ "", [ !Ref PrivateSubnetCidrPrefix, !Ref PublicSubnetCidrCSuffix ] ]
AvailabilityZone: !Ref SubnetAZC
Tags:
- Key: KubernetesCluster
Value: !Ref DomainName
- Key: kubernetes.io/role/internal-elb
Value: 1
- Key: !Join [ "/", [ "kubernetes.io/cluster", !Ref DomainName ] ]
Value: owned
PrivateSubnetRouteTableA:
Type: AWS::EC2::RouteTable
Properties:
VpcId: !Ref VPCID
Tags:
- Key: KubernetesCluster
Value: !Ref DomainName
- Key: !Join [ "/", [ "kubernetes.io/cluster", !Ref DomainName ] ]
Value: owned
PrivateSubnetRouteTableB:
Type: AWS::EC2::RouteTable
Properties:
VpcId: !Ref VPCID
Tags:
- Key: KubernetesCluster
Value: !Ref DomainName
- Key: !Join [ "/", [ "kubernetes.io/cluster", !Ref DomainName ] ]
Value: owned
PrivateSubnetRouteTableC:
Type: AWS::EC2::RouteTable
Properties:
VpcId: !Ref VPCID
Tags:
- Key: KubernetesCluster
Value: !Ref DomainName
- Key: !Join [ "/", [ "kubernetes.io/cluster", !Ref DomainName ] ]
Value: owned
PrivateSubnetRouteA:
Type: AWS::EC2::Route
Properties:
RouteTableId: !Ref PrivateSubnetRouteTableA
DestinationCidrBlock: 0.0.0.0/0
NatGatewayId: !Ref NATGatewayA
PrivateSubnetRouteB:
Type: AWS::EC2::Route
Properties:
RouteTableId: !Ref PrivateSubnetRouteTableB
DestinationCidrBlock: 0.0.0.0/0
NatGatewayId: !Ref NATGatewayB
PrivateSubnetRouteC:
Type: AWS::EC2::Route
Properties:
RouteTableId: !Ref PrivateSubnetRouteTableC
DestinationCidrBlock: 0.0.0.0/0
NatGatewayId: !Ref NATGatewayC
PrivateSubnetRouteTableAssociationA:
Type: AWS::EC2::SubnetRouteTableAssociation
Properties:
SubnetId: !Ref PrivateSubnetA
RouteTableId: !Ref PrivateSubnetRouteTableA
PrivateSubnetRouteTableAssociationB:
Type: AWS::EC2::SubnetRouteTableAssociation
Properties:
SubnetId: !Ref PrivateSubnetB
RouteTableId: !Ref PrivateSubnetRouteTableB
PrivateSubnetRouteTableAssociationC:
Type: AWS::EC2::SubnetRouteTableAssociation
Properties:
SubnetId: !Ref PrivateSubnetC
RouteTableId: !Ref PrivateSubnetRouteTableC
NATEIPA:
Type: AWS::EC2::EIP
Properties:
Domain: vpc
NATEIPB:
Type: AWS::EC2::EIP
Properties:
Domain: vpc
NATEIPC:
Type: AWS::EC2::EIP
Properties:
Domain: vpc
NATGatewayA:
Type: AWS::EC2::NatGateway
Properties:
AllocationId: !GetAtt NATEIPA.AllocationId
SubnetId: !Ref PublicSubnetA
NATGatewayB:
Type: AWS::EC2::NatGateway
Properties:
AllocationId: !GetAtt NATEIPB.AllocationId
SubnetId: !Ref PublicSubnetB
NATGatewayC:
Type: AWS::EC2::NatGateway
Properties:
AllocationId: !GetAtt NATEIPC.AllocationId
SubnetId: !Ref PublicSubnetA
### Public Subnets ###
PublicSubnetA:
Type: AWS::EC2::Subnet
Properties:
VpcId: !Ref VPCID
CidrBlock: !Join [ "", [ !Ref PublicSubnetCidrPrefix, !Ref PublicSubnetCidrASuffix ] ]
AvailabilityZone: !Ref SubnetAZA
Tags:
- Key: KubernetesCluster
Value: !Ref DomainName
- Key: kubernetes.io/role/internal-elb
Value: 1
- Key: !Join [ "/", [ "kubernetes.io/cluster", !Ref DomainName ] ]
Value: owned
MapPublicIpOnLaunch: true
PublicSubnetB:
Type: AWS::EC2::Subnet
Properties:
VpcId: !Ref VPCID
CidrBlock: !Join [ "", [ !Ref PublicSubnetCidrPrefix, !Ref PublicSubnetCidrBSuffix ] ]
AvailabilityZone: !Ref SubnetAZB
Tags:
- Key: KubernetesCluster
Value: !Ref DomainName
- Key: kubernetes.io/role/internal-elb
Value: 1
- Key: !Join [ "/", [ "kubernetes.io/cluster", !Ref DomainName ] ]
Value: owned
MapPublicIpOnLaunch: true
PublicSubnetC:
Type: AWS::EC2::Subnet
Properties:
VpcId: !Ref VPCID
CidrBlock: !Join [ "", [ !Ref PublicSubnetCidrPrefix, !Ref PublicSubnetCidrCSuffix ] ]
AvailabilityZone: !Ref SubnetAZC
Tags:
- Key: KubernetesCluster
Value: !Ref DomainName
- Key: kubernetes.io/role/internal-elb
Value: 1
- Key: !Join [ "/", [ "kubernetes.io/cluster", !Ref DomainName ] ]
Value: owned
MapPublicIpOnLaunch: true
PublicSubnetRouteTable:
Type: AWS::EC2::RouteTable
Properties:
VpcId: !Ref VPCID
Tags:
- Key: KubernetesCluster
Value: !Ref DomainName
- Key: !Join [ "/", [ "kubernetes.io/cluster", !Ref DomainName ] ]
Value: owned
PublicSubnetRoute:
Type: AWS::EC2::Route
Properties:
RouteTableId: !Ref PublicSubnetRouteTable
DestinationCidrBlock: 0.0.0.0/0
GatewayId: !Ref InternetGateway
PublicSubnetRouteTableAssociationA:
Type: AWS::EC2::SubnetRouteTableAssociation
Properties:
SubnetId: !Ref PublicSubnetA
RouteTableId: !Ref PublicSubnetRouteTable
PublicSubnetRouteTableAssociationB:
Type: AWS::EC2::SubnetRouteTableAssociation
Properties:
SubnetId: !Ref PublicSubnetB
RouteTableId: !Ref PublicSubnetRouteTable
PublicSubnetRouteTableAssociationC:
Type: AWS::EC2::SubnetRouteTableAssociation
Properties:
SubnetId: !Ref PublicSubnetC
RouteTableId: !Ref PublicSubnetRouteTable
BastionSecurityGroup:
Type: AWS::EC2::SecurityGroup
Properties:
GroupDescription: Enable SSH access via port 22
VpcId: !Ref VPCID
SecurityGroupIngress:
- IpProtocol: tcp
FromPort: '22'
ToPort: '22'
CidrIp: '0.0.0.0/0'
BastionHost:
Type: AWS::EC2::Instance
Properties:
ImageId: !FindInMap [ RegionToImageMap, !Ref "AWS::Region", hvm ]
InstanceType: t2.micro
SubnetId: !Ref PublicSubnetA
SecurityGroupIds: [ !Ref BastionSecurityGroup ]
KeyName: !Ref KeyName
BastionRecordSet:
Type: "AWS::Route53::RecordSet"
Properties:
HostedZoneId: !Ref HostedZone
Name: !Join [ ".", [ "bastion", !Ref DomainName, "" ] ]
Type: A
TTL: 60
ResourceRecords:
- !GetAtt [ "BastionHost", "PublicIp" ]
AutoScalingNotificationTopic:
Type: "AWS::SNS::Topic"
Properties:
DisplayName: "Controller AutoScaling Events"
Subscription:
- Protocol: lambda
Endpoint: !GetAtt [ AutoScalingDNSUpdateLambda, Arn ]
ControllerAutoScalingGroup:
Type: AWS::AutoScaling::AutoScalingGroup
Properties:
VPCZoneIdentifier:
- !Ref PrivateSubnetA
- !Ref PrivateSubnetB
- !Ref PrivateSubnetC
LaunchConfigurationName:
Ref: ControllerLaunchConfiguration
DesiredCapacity: !Ref ControllerPoolSize
MaxSize: !Ref ControllerPoolSize
MinSize: !Ref ControllerPoolSize
LoadBalancerNames:
- !Ref ControllerELB
NotificationConfigurations:
- NotificationTypes:
- "autoscaling:EC2_INSTANCE_LAUNCH"
- "autoscaling:EC2_INSTANCE_TERMINATE"
TopicARN: !Ref AutoScalingNotificationTopic
Tags:
- Key: StackName
PropagateAtLaunch: true
Value: !Ref AWS::StackName
- Key: KubernetesCluster
PropagateAtLaunch: true
Value: !Ref DomainName
UpdatePolicy:
AutoScalingRollingUpdate:
MaxBatchSize: 1
MinInstancesInService: 2
WaitOnResourceSignals: true
PauseTime: PT1H
AutoScalingDNSUpdateLambda:
Type: "AWS::Lambda::Function"
Properties:
Role: !GetAtt [ AutoScalingDNSUpdateLambdaRole, Arn ]
Runtime: python3.6
Handler: index.lambda_handler
Code:
ZipFile: !Sub |
import boto3
import json
domain = "${DomainName}"
hostedZoneID= "${HostedZone}"
prefix = 'controller-'
ec2 = boto3.client('ec2')
route53 = boto3.client('route53')
autoscaling = boto3.client('autoscaling')
def lambda_handler(event, context):
print('Processing event: {}'.format(event))
record = event['Records'][0]
message = json.loads(record['Sns']['Message'])
asgis = autoscaling.describe_auto_scaling_groups(
AutoScalingGroupNames = [ message['AutoScalingGroupName'] ],
MaxRecords = 1
)['AutoScalingGroups'][0]['Instances']
print('Found instance ids: {}'.format(asgis))
reservations = ec2.describe_instances(
InstanceIds = list(map(lambda i: i['InstanceId'], asgis))
)['Reservations']
instances = [ y for x in list(map(lambda r: r['Instances'],
reservations)) for y in x ]
print('Found instances: {}'.format(instances))
changes = [{
'Action': 'UPSERT',
'ResourceRecordSet': {
'Type': 'SRV',
'Name': '_etcd-server-ssl._tcp.' + domain,
'TTL': 60,
'ResourceRecords': list(map(
lambda i: { 'Value': '0 0 2380 ' + i['PrivateDnsName'] },
instances
))
}
}, {
'Action': 'UPSERT',
'ResourceRecordSet': {
'Type': 'SRV',
'Name': '_etcd-client-ssl._tcp.' + domain,
'TTL': 60,
'ResourceRecords': list(map(
lambda i: { 'Value': '0 0 2379 ' + i['PrivateDnsName'] },
instances
))
}
}]
print('Applying these Changes: {}'.format(changes))
route53.change_resource_record_sets(HostedZoneId=hostedZoneID,
ChangeBatch={ 'Changes': changes }
)
LambdaInvokePermission:
Type: "AWS::Lambda::Permission"
Properties:
Action: "lambda:InvokeFunction"
Principal: sns.amazonaws.com
SourceArn: !Ref AutoScalingNotificationTopic
FunctionName: !GetAtt [ AutoScalingDNSUpdateLambda, Arn ]
AutoScalingDNSUpdateLambdaRole:
Type: "AWS::IAM::Role"
Properties:
AssumeRolePolicyDocument:
Version: "2012-10-17"
Statement:
- Effect: Allow
Principal:
Service: lambda.amazonaws.com
Action: "sts:AssumeRole"
Policies:
- PolicyName: "root"
PolicyDocument:
Version: "2012-10-17"
Statement:
- Effect: Allow
Action:
- "ec2:DescribeNetworkInterfaces"
- "ec2:CreateNetworkInterface"
- "ec2:DeleteNetworkInterface"
- "ec2:DescribeInstances"
- "autoscaling:DescribeAutoScalingGroups"
Resource: "*"
- Effect: Allow
Action:
- "logs:CreateLogGroup"
- "logs:CreateLogStream"
- "logs:PutLogEvents"
Resource: "arn:aws:logs:*:*:*"
- Effect: Allow
Action:
- "route53:GetChange"
Resource:
- "*"
- Effect: Allow
Action:
- "route53:ChangeResourceRecordSets"
- "route53:ListResourceRecordSets"
Resource: !Sub
- "arn:aws:route53:::hostedzone/${HostedZone}"
- { HostedZone: !Ref HostedZone }
PolicyController:
Type: AWS::IAM::ManagedPolicy
Properties:
Description: "k8s-controller"
Path: /
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action:
- "ec2:Describe*"
- "elasticloadbalancing:*"
- "autoscaling:DescribeAutoScalingGroups"
- "autoscaling:DescribeLaunchConfigurations"
- "ec2:CreateRoute"
- "ec2:CreateSecurityGroup"
- "ec2:CreateVolume"
- "ec2:ModifyVolume"
- "ec2:AttachVolume"
- "ec2:DetachVolume"
- "ec2:DeleteVolume" # FIXME: Once k8s tags the volumes,
- "ec2:CreateTags" # these should be scoped.
Resource:
- "*"
- Effect: Allow
Action:
- "ec2:ModifyInstanceAttribute"
- "ec2:AuthorizeSecurityGroup*" # k8s needs to run this on the k8s managed and stack SG below
Resource:
- "*"
Condition:
StringEquals:
"ec2:ResourceTag/aws:cloudformation:stack-id": !Ref AWS::StackId
- Effect: Allow
Action:
- "ec2:AuthorizeSecurityGroup*"
- "ec2:DeleteSecurityGroup"
- "ec2:DeleteRoute"
Resource:
- "*"
Condition:
StringEquals:
"ec2:ResourceTag/KubernetesCluster": !Ref DomainName
- Effect: Allow
Action:
- "autoscaling:SetDesiredCapacity"
- "autoscaling:TerminateInstanceInAutoScalingGroup"
Resource:
- !Sub "arn:aws:autoscaling:${AWS::Region}:${AWS::AccountId}:autoScalingGroup:*:autoScalingGroupName/${WorkerAutoScalingGroup}"
- Effect: Allow
Action:
- "s3:Get*"
- "s3:List*"
- "s3:Head*"
Resource:
- !Sub
- "arn:aws:s3:::${assetBucket}/${domain}/*"
- assetBucket: !Ref assetBucket
domain: !Ref DomainName
- !Sub
- "arn:aws:s3:::${assetBucket}/${domain}"
- assetBucket: !Ref assetBucket
domain: !Ref DomainName
ControllerRole:
Type: AWS::IAM::Role
Properties:
ManagedPolicyArns:
- !Ref PolicyController
AssumeRolePolicyDocument:
Version: "2012-10-17"
Statement:
- Effect: Allow
Principal:
Service: ec2.amazonaws.com
Action: "sts:AssumeRole"
ControllerInstanceProfile:
Type: AWS::IAM::InstanceProfile
Properties:
Path: /
Roles:
- !Ref ControllerRole
ControllerLaunchConfiguration:
Type: AWS::AutoScaling::LaunchConfiguration
Properties:
KeyName: !Ref KeyName
ImageId: !FindInMap [ RegionToImageMap, !Ref "AWS::Region", hvm ]
InstanceType: !Ref ControllerInstanceType
IamInstanceProfile: !GetAtt [ ControllerInstanceProfile, Arn ]
SecurityGroups:
- !Ref ControllerSecurityGroup
UserData:
# FIXME: "user" { "name": "etcd" } somehow isn't working. Working
# around by chown in systemd unit.
Fn::Base64:
Fn::Sub:
- |
{
"ignition": {
"version": "2.1.0",
"config": {}
},
"storage": {
"files": [{
"filesystem": "root",
"path": "/etc/ssl/etcd/server.crt",
"user": { "name": "etcd" },
"mode": 420,
"contents": { "source": "s3://${assetBucket}/${domain}/etcd/server.pem" }
}, {
"filesystem": "root",
"path": "/etc/ssl/etcd/server.key",
"user": { "name": "etcd" },
"mode": 384,
"contents": { "source": "s3://${assetBucket}/${domain}/etcd/server-key.pem" }
}, {
"filesystem": "root",
"path": "/etc/ssl/etcd/peer.crt",
"user": { "name": "etcd" },
"mode": 420,
"contents": { "source": "s3://${assetBucket}/${domain}/etcd/peer.pem" }
}, {
"filesystem": "root",
"path": "/etc/ssl/etcd/peer.key",
"user": { "name": "etcd" },
"mode": 384,
"contents": { "source": "s3://${assetBucket}/${domain}/etcd/peer-key.pem" }
}, {
"filesystem": "root",
"path": "/etc/ssl/etcd/ca.crt",
"user": { "name": "etcd" },
"mode": 420,
"contents": { "source": "s3://${assetBucket}/${domain}/etcd/ca.pem" }
}, {
"filesystem": "root",
"path": "/etc/kubernetes/pki/ca.crt",
"mode": 420,
"contents": { "source": "s3://${assetBucket}/${domain}/kubeadm/ca.crt" }
}, {
"filesystem": "root",
"path": "/etc/kubernetes/pki/ca.key",
"mode": 384,
"contents": { "source": "s3://${assetBucket}/${domain}/kubeadm/ca.key" }
}, {
"filesystem": "root",
"path": "/etc/kubernetes/pki/sa.pub",
"mode": 420,
"contents": { "source": "s3://${assetBucket}/${domain}/kubeadm/sa.pub" }
}, {
"filesystem": "root",
"path": "/etc/kubernetes/pki/sa.key",
"mode": 384,
"contents": { "source": "s3://${assetBucket}/${domain}/kubeadm/sa.key" }
}, {
"filesystem": "root",
"path": "/etc/kubernetes/pki/front-proxy-ca.crt",
"mode": 420,
"contents": { "source": "s3://${assetBucket}/${domain}/kubeadm/front-proxy-ca.crt" }
}, {
"filesystem": "root",
"path": "/etc/kubernetes/pki/front-proxy-ca.key",
"mode": 384,
"contents": { "source": "s3://${assetBucket}/${domain}/kubeadm/front-proxy-ca.key" }
}, {
"filesystem": "root",
"path": "/etc/kubernetes/cloud-config",
"mode": 420,
"contents": { "source": "data:;base64,${cloudProviderConfig}" }
},
{
"filesystem": "root",
"path": "/etc/kubernetes/controller.yaml",
"mode": 420,
"contents": { "source": "data:;base64,${controllerConfig}" }
},
{
"filesystem": "root",
"path": "/etc/etcd.env",
"mode": 420,
"contents": { "source": "data:;base64,${etcdEnv}" }
}, {
"filesystem": "root",
"path": "/etc/etcdctl-wrapper",
"mode": 493,
"contents": { "source": "data:;base64,${etcdctlWrapper}" }
}, {
"filesystem": "root",
"path": "/etc/etcd-member-remove",
"mode": 493,
"contents": { "source": "data:;base64,${etcdMemberRemove}" }
}, {
"filesystem": "root",
"path": "/etc/etcd-member-add",
"mode": 493,
"contents": { "source": "data:;base64,${etcdMemberAdd}" }
}, {
"filesystem": "root",
"path": "/etc/etcd-signal-health",
"mode": 493,
"contents": { "source": "data:;base64,${etcdSignalHealth}" }
}, {
"filesystem": "root",
"path": "/opt/bin/patch-kube-proxy-cm",
"mode": 493,
"contents": { "source": "data:;base64,${patchKubeProxyCM}" }
}, {
"filesystem": "root",
"path": "/opt/bin/kubeadm",
"mode": 493,
"contents": { "source": "${kubeadmURL}" }
}, {
"filesystem": "root",
"path": "/etc/kubernetes.env",
"mode": 420,
"contents": { "source": "data:;base64,${kubernetesEnv}" }
}]
},
"systemd": {
"units": [{
"name": "etcd-member.service",
"enable": true,
"dropins": [{
"name": "20-etcd-member.conf",
"contents": "${etcdUnit}"
}]
}, {
"name": "kubelet.service",
"enable": false,
"contents": "${kubeletUnit}"
}, {
"name": "kubeadm.service",
"enable": true,
"contents": "${kubeadmUnit}"
}, {
"name": "update-engine.service",
"mask": true
}, {
"name": "locksmithd.service",
"mask": true
}]