AWS elasticsearch service with open access - aws-elasticsearch

I have this template that was working till February.
https://datameetgeobk.s3.amazonaws.com/cftemplates/EyeOfCustomer_updated.yaml.txt
Something related to Fine Grained access changed and I get the error...
Enable fine-grained access control or apply a restrictive access
policy to your domain (Service: AWSElasticsearch; Status Code: 400;
Error Code: ValidationException
This is just a test server and I do not want to protect it using Advanced security options.

The error you receive is because Amazon enabled the fine grained access control as part of its release in February 2020.
You can enable VPCOptions for the cluster and create a subnet + security group and allow access through that security group. Add VPC ID as a parameter say pVpc (default VPC in thise case)
Add vpc parameter
pVpc:
Description: VPC ID
Type: String
Default: default-xxadssad - your default vpc id
Add subnet & security group
ESSubnetA:
Type: AWS::EC2::Subnet
Properties:
VpcId:
Ref: !Ref pVpc
AvailabilityZone: ${self:provider.region}a
CidrBlock: !Ref pVpcCIDR
Tags:
- Key: Name
Value: es-subneta
ESSecurityGroup:
Type: AWS::EC2::SecurityGroup
Properties:
GroupDescription: SecurityGroup for Elasticsearch
VpcId:
Ref: !Ref pVpc
SecurityGroupIngress:
- FromPort: '443'
IpProtocol: tcp
ToPort: '443'
CidrIp: 0.0.0.0/0
Tags:
- Key: Name
Value: es-sg
Enable VPCOptions
VPCOptions:
SubnetIds:
- !Ref ESSubnetA
SecurityGroupIds:
- !Ref ESSecurityGroup

Related

is it possible to reuse existing route table in cloudformation template

I am writing one cft to connect dynamodb uisng vpcEndpoint.
DynamoDBEndpoint:
Type: "AWS::EC2::VPCEndpoint"
Properties:
RouteTableIds:
- !Ref PublicRouteTable
- !Ref Private0RouteTable
- !Ref Private1RouteTable
- !Ref Private2RouteTable
ServiceName:
!Sub "com.amazonaws.${AWS::Region}.dynamodb"
VpcId: !Ref VPC
Parameters:
vpcId:
Description: Choose the existing one
Type: AWS::EC2::VPC::Id
I am getting existing vpcId by using parameter ,is there any way I can ruse my existing routetable ,Please suggest me on this how could I define this ref PublicRouteTable and ref PrivateRouteTable .
Your parameter vpcId works because it uses AWS::EC2::VPC::Id type which belongs to Supported AWS-specific parameter types in CloudFormation.
Sadly, CloudFormation does not support similar type for route tables. You have to type out route tables IDs manually in console when you specify parameters.

504 Gateway Timeout using Application Load Balancer in ECS

Deploying a Laravel web application on ECS, in order to enable autoscaling I am using an Application Load Balancer. The application worked (and scaled) perfectly until I introduced a heavy weight page, where I started to get 504 Gateway Timeout errors after a minute or so.
I am pretty sure the single web server has a higher timeout (this never happens when the application is tested in local) so the problem must be related to something related to AWS environment (ECS / ALB).
Below you can find a snipped of the ALB setting
AdminLoadBalancer:
Type: AWS::ElasticLoadBalancingV2::LoadBalancer
Properties:
SecurityGroups:
- !Ref 'AlbSecurityGroup'
Subnets:
- !Ref 'PublicSubnetAz1'
- !Ref 'PublicSubnetAz2'
Scheme: internet-facing
Name: !Join ['-', [!Ref 'AWS::StackName', 'lb']]
After some attempts, I solved the issue setting the idle timeout attribute of the load balancer, as explained here in theory, because nothing was wrong with the single ECS Tasks. In Cloudformation, it was enough to add the attribute setting of the parameter, and double the default value.
AdminLoadBalancer:
Type: AWS::ElasticLoadBalancingV2::LoadBalancer
Properties:
LoadBalancerAttributes:
- Key: 'idle_timeout.timeout_seconds'
Value: 120
SecurityGroups:
- !Ref 'AlbSecurityGroup'
Subnets:
- !Ref 'PublicSubnetAz1'
- !Ref 'PublicSubnetAz2'
Scheme: internet-facing
Name: !Join ['-', [!Ref 'AWS::StackName', 'lb']]

How nested lists works or append to a list in Cloudformation?

I want to refer the security that is getting created in the stack itself. I am trying this but nothing gets worked. Can someone help me out.
Parameters:
env:
Default: qa
Type: String
Here are the mappings
Mappings:
envMap:
qa:
securityGroups: 'sg-xxxxxxxx,sg-xxxxxxxx'
sub:
subnets: 'subnet-xxxxxxxx,subnet-xxxxxxxx'
I am creating Security Group and also want to map existing security groups as well.
Resources:
InstanceSecurityGroup:
Type: AWS::EC2::SecurityGroup
Properties:
GroupDescription: Allow http to client host
SecurityGroupIngress:
- IpProtocol: tcp
FromPort: 80
ToPort: 80
CidrIp: 0.0.0.0/0
LoadBalancer:
Type: 'AWS::ElasticLoadBalancingV2::LoadBalancer'
Properties:
SecurityGroups: !Split
- ','
- !Sub
- '!Ref InstanceSecurityGroup,${mappedGroup}'
- mappedGroup: !FindInMap
- envMap
- !Ref env
- securityGroups
Subnets: !Split
- ','
- !FindInMap
- envMap
- sub
- subnets

fargate failing on docker pull in private subnet

I am having trouble deploying a fargate cluster, and it is failing on the docker pull image with error "CannotPullContainerError". I am creating the stack with cloudformation, which is not optional, and it creates the full stack, but fails when trying to start the task based on the above error.
I have attached the cloudformation stack file which might highlight the problem, and I have doubled checked that the subnet has a route to nat(below). I also ssh'ed into an instance in the same subnet which was able to route externally. I am wondering if i have not correctly placed the pieces required i.e the service + loadbalancer are in the private subnet, or should i not be placing the internal lb in the same subnet???
This subnet is the one that currently has the placement but all 3 in the file have the same nat settings.
subnet routable (subnet-34b92250)
* 0.0.0.0/0 -> nat-05a00385366da527a
cheers in advance.
yaml cloudformaition script:
AWSTemplateFormatVersion: 2010-09-09
Description: Cloudformation stack for the new GRPC endpoints within existing vpc/subnets and using fargate
Parameters:
StackName:
Type: String
Default: cf-core-ci-grpc
Description: The name of the parent Fargate networking stack that you created. Necessary
vpcId:
Type: String
Default: vpc-0d499a68
Description: The name of the parent Fargate networking stack that you created. Necessary
Resources:
CoreGrcpInstanceSecurityGroupOpenWeb:
Type: 'AWS::EC2::SecurityGroup'
Properties:
GroupName: sgg-core-ci-grpc-ingress
GroupDescription: Allow http to client host
VpcId: !Ref vpcId
SecurityGroupIngress:
- IpProtocol: tcp
FromPort: '80'
ToPort: '80'
CidrIp: 0.0.0.0/0
SecurityGroupEgress:
- IpProtocol: tcp
FromPort: '80'
ToPort: '80'
CidrIp: 0.0.0.0/0
LoadBalancer:
Type: 'AWS::ElasticLoadBalancingV2::LoadBalancer'
DependsOn:
- CoreGrcpInstanceSecurityGroupOpenWeb
Properties:
Name: lb-core-ci-int-grpc
Scheme: internal
Subnets:
# # pub
# - subnet-f13995a8
# - subnet-f13995a8
# - subnet-f13995a8
# pri
- subnet-34b92250
- subnet-82d85af4
- subnet-ca379b93
LoadBalancerAttributes:
- Key: idle_timeout.timeout_seconds
Value: '50'
SecurityGroups:
- !Ref CoreGrcpInstanceSecurityGroupOpenWeb
TargetGroup:
Type: 'AWS::ElasticLoadBalancingV2::TargetGroup'
DependsOn:
- LoadBalancer
Properties:
Name: tg-core-ci-grpc
Port: 3000
TargetType: ip
Protocol: HTTP
HealthCheckIntervalSeconds: 30
HealthCheckProtocol: HTTP
HealthCheckTimeoutSeconds: 10
HealthyThresholdCount: 4
Matcher:
HttpCode: '200'
TargetGroupAttributes:
- Key: deregistration_delay.timeout_seconds
Value: '20'
UnhealthyThresholdCount: 3
VpcId: !Ref vpcId
LoadBalancerListener:
Type: 'AWS::ElasticLoadBalancingV2::Listener'
DependsOn:
- TargetGroup
Properties:
DefaultActions:
- Type: forward
TargetGroupArn: !Ref TargetGroup
LoadBalancerArn: !Ref LoadBalancer
Port: 80
Protocol: HTTP
EcsCluster:
Type: 'AWS::ECS::Cluster'
DependsOn:
- LoadBalancerListener
Properties:
ClusterName: ecs-core-ci-grpc
EcsTaskRole:
Type: 'AWS::IAM::Role'
Properties:
AssumeRolePolicyDocument:
Statement:
- Effect: Allow
Principal:
Service:
# - ecs.amazonaws.com
- ecs-tasks.amazonaws.com
Action:
- 'sts:AssumeRole'
Path: /
Policies:
- PolicyName: iam-policy-ecs-task-core-ci-grpc
PolicyDocument:
Statement:
- Effect: Allow
Action:
- 'ecr:**'
Resource: '*'
CoreGrcpTaskDefinition:
Type: 'AWS::ECS::TaskDefinition'
DependsOn:
- EcsCluster
- EcsTaskRole
Properties:
NetworkMode: awsvpc
RequiresCompatibilities:
- FARGATE
ExecutionRoleArn: !Ref EcsTaskRole
Cpu: '1024'
Memory: '2048'
ContainerDefinitions:
- Name: container-core-ci-grpc
Image: 'nginx:latest'
Cpu: '256'
Memory: '1024'
PortMappings:
- ContainerPort: '80'
HostPort: '80'
Essential: 'true'
EcsService:
Type: 'AWS::ECS::Service'
DependsOn:
- CoreGrcpTaskDefinition
Properties:
Cluster: !Ref EcsCluster
LaunchType: FARGATE
DesiredCount: '1'
DeploymentConfiguration:
MaximumPercent: 150
MinimumHealthyPercent: 0
LoadBalancers:
- ContainerName: container-core-ci-grpc
ContainerPort: '80'
TargetGroupArn: !Ref TargetGroup
NetworkConfiguration:
AwsvpcConfiguration:
AssignPublicIp: DISABLED
SecurityGroups:
- !Ref CoreGrcpInstanceSecurityGroupOpenWeb
Subnets:
- subnet-34b92250
- subnet-82d85af4
- subnet-ca379b93
TaskDefinition: !Ref CoreGrcpTaskDefinition
Unfortunately AWS Fargate only supports images hosted in ECR or public repositories in Docker Hub and does not support private repositories which are hosted in Docker Hub. For more info - https://forums.aws.amazon.com/thread.jspa?threadID=268415
Even we faced the same problem using AWS Fargate couple of months back. You have only two options right now:
Migrate your images to Amazon ECR.
Use AWS Batch with custom AMI, where the custom AMI is built with Docker Hub credentials in ECS config (which we are using right now).
Edit: As mentioned by Christopher Thomas in the comment, ECS fargate now supports pulling images from DockerHub Private repositories. More info on how to set it up can be found here.
Do define this policy in your ECR registry and attach the IAM role with your task.
{
"Version": "2008-10-17",
"Statement": [
{
"Sid": "new statement",
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::99999999999:role/ecsEventsRole"
},
"Action": [
"ecr:GetDownloadUrlForLayer",
"ecr:BatchGetImage",
"ecr:BatchCheckLayerAvailability",
"ecr:PutImage",
"ecr:InitiateLayerUpload",
"ecr:UploadLayerPart",
"ecr:CompleteLayerUpload"
]
}
]
}

Cloudformation error: Value of property NetworkInterfaces must be a list of objects

I get the error Value of property NetworkInterfaces must be a list of objects when referring to a NetworkInterface in a CloudFormation template.
Here is the relevant section:
MyAppNetworkInterface:
Type: AWS::EC2::NetworkInterface
Properties:
SubnetId: !Ref SubnetPrivate
MyApp:
Type: AWS::EC2::Instance
Properties:
InstanceType: t2.medium
NetworkInterfaces:
- !Ref MyAppNetworkInterface
You can actually refer the Network Interface directly from the EC2 Host. But the syntax is slightly different:
MyAppNetworkInterface:
Type: AWS::EC2::NetworkInterface
Properties:
SubnetId: !Ref SubnetPrivate
MyApp:
Type: AWS::EC2::Instance
Properties:
InstanceType: t2.medium
NetworkInterfaces:
- NetworkInterfaceId: !Ref MyAppNetworkInterface
DeviceIndex: 0
(see: http://docs.amazonaws.cn/en_us/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-network-interface.html#cfn-awsec2networkinterface-templateexamples)
You can't do it that way. Instead , create the two resources independently, then connect with a network interface attachment resource.
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-network-interface-attachment.html