A service mesh provides additional security over the network, which spans outside the single EKS network. Part 4 - EKS Runtime Security Best Practices. This implies that all the tenants should have access to all the resources. These components can be computer resources, storage resources, etc. Let’s look at the below network policy, which allows communication within namespaces: There are more advanced network policies that can be used to isolate the tenants in a multi-cluster environment. Best practices for NAT instances In specific cases, there might be hundreds of EC2 instances within an AWS VPC which are creating lots of heavy web service or HTTP calls simultaneously. We covered different perspectives around compute, networking, and storage. Your building will not function well if the water is shut off in one apartment when people in another apartment take a shower. Each workload must be isolated. The 10 Best Practices for Enterprise Architecture Page 1 Anne Lapkin BRL28L_115, 4/07, AE This presentation, including any supporting materials, is owned by Gartner, Inc. and/or its affiliates and is for the sole use of the When it comes to configuring Kubernetes Multi tenancy with Amazon EKS, there are numerous advantages. All the apartments have to be isolated. • Data source integrations • Physical hardware, software, networking, and facilities • Provisioning • Application code • Container orchestration, provisioning Note. Monitoring key metrics provides critical visibility into your workload’s functional health and that it may need performance tuning or that it may require further investigation. Some of these benefits are highlighted below: Before we move ahead to discuss the challenges and best practices for Kubernetes multi tenant SaaS applications on EKS, let’s first understand what multi-tenancy is. Analysis of these logs will help detect some types of attacks against the cluster, and security auditors will want to know that you collect and retain this data. Namespaces are nothing but a logical way to divide cluster resources between multiple resources. Decide Whether to Sidecar or Not to Sidecar Kubernetes recommends using sidecar containers to collect logs. In this approach, every application container would have a neighboring ‘streaming container’ that streams all logs to stdout and stderr. An essential criterion for the success of any application is usability. As well, include cloud-native principles, and finally, adopt the multi-tenant architecture best practices and considerations described in this article. It's here especially to help you … Below are best practices you can follow to set up Kubernetes networks effectively in Amazon EKS. A Persistent Volume is usually declared at the cluster level along with the StorageClass (a cluster administrator, which is responsible for the configurations and the operations). AWS Elastic Container Service for Kubernetes (EKS) is a managed Kubernetes service ideal for large clusters of nodes running heavy and variable workloads. Non-namespaced resources do not specifically belong to a particular namespace. Includes using taints and tole… The next critical aspect to understand before getting started with EKS is the AWS EKS architecture. Why: Irregular spikes in application load or node usage can be a signal that an application may need programmatic troubleshooting, but they can also signal unauthorized activity in the cluster. In an apartment or a condominium building, you need to provide full isolation to the people staying inside. Tenant namespaces can be easily isolated using this technique. ClickIT Tech is a premium Cloud and DevOps Nearshore Solution Provider helping companies of all sizes in Healthcare, Fintech and MarTech with superior tech solutions focussed on Cloud Migrations, Continuous Delivery, DevSecOps, Micro services and AWS Managed services. GitHub - aws/aws-eks-best-practices: A best practices guide for day 2 operations, including operational excellence, security, reliability, performance efficiency, and cost optimization. There are several layers in EKS which provide a specific layer of security and isolation for a Kubernetes multi tenancy SaaS application. EKS leaves a large share of operational overhead to the user. Such an architecture can support growth in users, traffic, or data size with no drop-in performance. This version of the Amazon EKS Quick Start is no longer available. Kubernetes Architecture Architectural Overview Control Plane Data Plane Kubernetes Cluster Setup Amazon EKS ... Amazon EKS Workshop. Introduction to Kubernetes. EKS users, especially those with multiple clusters, will want to set up some form of automation to lighten the manual load and to ensure that critical security patches get applied to clusters quickly. For almost four years now, I’ve had the pleasure of hosting the #CIOChat forum on Twitter and LinkedIn. StorageOS uses the etcd distributed key-value store to store essential cluster metadata and manage distributed configuration state. This is a scalable isolation technique provided that there is an excellent provisioning and monitoring solution implemented in the infrastructure where Amazon EKS clusters are running. On the other hand, more pods will be added to the cluster if there is an unexpected hike in the application traffic. 100 View Street, Suite 204Mountain View, CA 94041, Gartner Report - Market Guide for Cloud Workload Protection Platforms (CWPP), Guide to Designing EKS Clusters for Better Security, Securing EKS Cluster Add-ons: Dashboard, Fargate, EC2 components, and more, make upgrading these components a standard part of cluster upgrades and patching, PCI compliance in container and Kubernetes environments, authenticator - the EKS component used to authenticate AWS IAM entities to the Kubernetes API. Let us delve into the best practices and considerations for multi-tenant SaaS applications using Amazon EKS in this article. What to do: Plan how to get notifications and how to handle security patches for your cluster and its nodes. Applications running on the cloud are diving deeper towards the most critical changes in how they are developed and deployed. Loft is a commercial offering with a free tier and is also included in the EKS Best Practices Guide for multi-tenancy. Implementation of Resource Quotas can ensure proportionate resource usage across tenants. Amazon EKS security best practices. These are Service Mesh and App Mesh. However, multi-tenancy poses multiple challenges, as described in the metaphor above. Twitter: @edXOnline. Tagged under: Security is a critical component of configuring and maintaining Kubernetes clusters and applications. Deploy another third-party monitoring or metrics collection service. From a high level, a Kubernetes environment consists of a control plane (master), a distributed storage system for keeping the cluster state consistent (), and a number of cluster nodes (Kubelets). 04 Click on the name (link) of the EKS cluster that you want to examine to access the resource configuration settings. Problems and considerations when building Kubernetes multi tenant architecture. For managed node groups, Amazon CloudWatch remains the only viable option, because you can not modify the user data to automate to install a third-party collection agent at boot time nor can you use your own AMI (Amazon Machine Image) with the agent baked in. Similarly, you must ensure that each person should have ample access to resources in the apartment building when it comes to resource sharing. For the latest deployment, see Amazon EKS on the AWS Cloud. Pod: Pods are nothing but a collection of containers. “Volume” is a major tool that Kubernetes offers, which provides a way to connect a form of persistent storage to a pod. Best Practices Current Best Practices includes a (hopefully) current guide for some best practices regarding Label usage and configuration in Loki. Infrastructure as Code & Amazon EKS on AWS Fargate. Automatic sizing detects the application usage patterns and adds the corresponding scaling factor to your application. Kubernetes also allows users to limit and define the CPU request and memory for the pods. HPA provides a cost-optimized solution for scaling the applications to offer a higher uptime and availability. Similarly, all the tenants have to be sufficiently isolated. » Next Steps These guides were updated in collaboration with the quick start team at AWS. Includes multi-tenancy core components and logical isolation with namespaces. In this blog post, we’ll show you how to quickly and easily configure Artifactory as your Kubernetes registry for EKS. Azure Architecture Center. Consequently, the processing capacity of the application should grow linearly with the growth in the number of users. Changes in node CPU, memory, or network metrics that do not correlate with the cluster workload activity can be signs of security events or other issues. Before we move ahead to discuss the challenges and best practices for Kubernetes multi tenant SaaS applications on EKS, let’s first understand what multi-tenancy is. This feature helps to manage unpredictable workloads in Production environments. This is an auto-scaling feature for the pods. This makes it easier for the infrastructure admins to focus more on the cluster and the worker nodes. Learn how we leverage a central repository of IaC resources for AWS CloudFormation and Terraform that define code conventions and best practices. Part 3 - EKS networking best practices. You can achieve improved quality through infrastructure as code (IaC) standardization. Node: A node is a machine, either physical or virtual. A best practice is to send all application logs to stdout and all error logs to stderr. In this space, AWS provides a perfect platform for SaaS product deliveries, which highly complement its rich and diverse IaaS and PaaS offerings. It isolates the application and data from one user to another. EKS leaves a large portion of the responsibility for applying security updates and upgrading Kubernetes versions, and for detecting and replacing failed nodes, to the user. But, they do belong to a cluster. This article covered some of the best considerations for Kubernetes multi tenancy implementation using Amazon EKS. We are going to discuss some best practices for this implementation: Namespaces should be categorized based on usage. Architecture. Depending upon the SaaS service you are implementing, using any of the above implementation models or even a hybrid approach can suit your design needs. If you want to fully understand multi tenant, this blog reviews the differences between Single tenant vs Multi tenant so you can have a better comprehension of both architectures. Kubernetes Versions ¶ Ensure that you select the latest version of k8s for your EKS Cluster. Why: While EKS takes responsibility for making updated node images and control plane versions available to its users, it will not patch your nodes or control plane for you. Namespaces may not provide workload or user isolation, but it does provide RBAC (Role-based Access Control). This section captures best practices with Amazon EKS Clusters that will help customers deploy and operate reliable and resilient EKS infrastructure. Kubernetes network policies help in this kind of micro-segmentation of containers. With EKS, there is no need to install, upgrade, or maintain any kind of plugins of tools. While it was originally focused on multi-tenant development use cases, it can also be used for production use cases such as cluster sharding or to run multiple instances of a product in a shared cluster This is the management layer for your containers. You will want to formulate a reliable process for tracking these updates and applying them to your EKS cluster. Using this technique, the admins can create different roles for different users, e.g., one role for admin, and the other one can be for a tenant. Includes using resource quotas and pod disruption budgets. Practice 1: Separate Namespaces for Each Tenant (Compute Isolation) Having separate namespaces remains an essential consideration while deploying a multi-tenant SaaS application, as it essentially divides a single cluster resource across multiple clients. Node replacement only happens automatically if the underlying instance fails, at which point the EC2 autoscaling group will terminate and replace it. Enhance Cluster Network Controls Using Calico The default network configuration in Kubernetes clusters allows network traffic to move freely between pods and to leave the cluster network. Below are some layers of isolation which you can implement in your design: Container: A container providers a fundamental layer of isolation, but it does not isolate the identity or the network. AWS admins can use ResourceQuotas to describe different storage classes for other namespaces. In the architecture diagram below, we have multiple-tenants hosted on different and fully isolated namespaces. The perfect SaaS tech stack11 January, 2021, ClickIT Listed as a Top B2B service provider on the Clutch 1000 for 202029 December, 2020, How to create an IT team: Best practices and tips12 November, 2020, Kubernetes Multi tenancy with Amazon EKS: Best practices and considerations, AWS CloudFormation Lambda: An Online Mapping Software, Multi tenant Architecture SaaS Application on AWS, Apache and Ngnix Multi Tenant to Support SaaS Applications, Learn 3 ways to architect your SaaS application on AWS. EKS supports Elastic Load Balancer (ELB). Most of the Kubernetes object belongs to a particular namespace, which virtually isolates them from one another. Best Practices Cloud Platforms. Also read: Apache and Ngnix Multi Tenant to Support SaaS Applications. Concept. 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