In this blog, we will look at the list of best service mesh tools for microservices that provides security, canary deployment, telemetry, load balancing, and much more.
The number of service mesh tools for deploying and operating microservices is ever-increasing. In this post, we will explore the top service mesh tools that you should be using to build your own service mesh architecture.
The first thing to do when developing a strategy for selecting the right tool is to understand what it will provide you with and how well it works.
Note: To understand service mesh better, you should have knowledge of microservices and Kubernetes or similar container orchestration tools.
What is a Service Mesh?
What if you want to manage, monitor, and secure communications between all microservices? Here is where a Service mesh comes in to picture.
A service mesh is a tool that provides an abstraction layer for microservices. They provide intelligent routing, resiliency, and load balancing capabilities between services with better fault tolerance than traditional solutions.
Overall, a service mesh manages all the service-to-service communication. It intercepts all the traffic flow between services. The best part is, you can manage all the service mesh functionalities in a declarative way, the same manner you deploy objects in Kubernetes.
What does a Service mesh do?
A service mesh essentially manages the traffic flow between multiple microservices primarily using a sidecar proxy.
There are many benefits from using a service mesh including increased security by providing communication encryption, simplified debugging processes through observability tools, as well as higher availability due to smart failover features and horizontal scalability with distributed tracing across containers or machines.
A service mesh aims to provide the following features
- Routing & Load Balancing
- Service discovery
- Authentication and authorization
- Canary deployments
- Circuit breaking, Rate limiting, Health checks and retry budgets
- mutual Transport Level Security (mTLS) & Access control lists.
- Observability through Distributed tracing
- Access logs of service to service communication
In most cases, a sidecar container running along with the application container takes care of all the above-mentioned features. You don’t have to specially design an application to work with a service mesh. Also, there is no extra instrumentation required to monitor services with service mesh capabilities.
List of Service Mesh Tools
Istio is a service mesh that was originally developed by Google but is now open source. It provides a way to connect, manage and secure microservices that communicate with each other.
Istio’s security features include encrypting all communication between services in transit as well as providing authentication credentials for authorized users. Istio also offers functionality such as distributed tracing across containers or machines without the need for third-party software agents within individual nodes.
Istio is used in production by many companies such as Adobe, Baidu, and Google.
Here are some Istio production stories.
Linkerd is an open-source service mesh that can run on top of Kubernetes or a Mesos cluster and is designed for high-scale environments to manage large numbers of microservices.
Linkerd will also provide monitoring, tracing, routing, load balancing, and other features as well as automatic deployment upgrades across clusters
Few Linkerd production-related readings,
- Buoyant’s Linkerd Production Runbook, from the creators of Linkerd.
- Linkerd service mesh in production
3. Consul connect
Consul connect is a service mesh solution from Hashicorp.
Consul was initially designed for service discovery. However, with consul connect, the service mesh is deployed on top of the consul and provides service discovery, configuration synchronization, and failure detection.
Consul connect can run in production with or without Kubernetes.
4. Traefik Mesh
Traefik Mesh is a simple service mesh solution, primarily used for load balancing.
Traefik Mesh is a plug-in for the popular reverse proxy Traefik that aids in service discovery and routing between services to balance out workloads.
It also provides features like SSL termination and web socket proxying so you don’t have to worry about those things on your own if they
5. Open Service Mesh (OSM)
Open Service Mesh (OSM) is a lightweight and extensible cloud-native service mesh that supports dynamic service discovery, monitoring, and routing.
OSM is pluggable at all levels to provide the best fit for your requirements:
- Service Discovery – Layer four (IP), or layer seven (URL)
- Monitoring – Prometheus based metrics with backends supporting Graphite, InfluxDB, and Elasticsearch
- Routing – HAProxy as a proxy between services providing high availability via load balancing of requests across pods in a cluster. It also provides features like SSL termination and web socket proxying so you don’t have to worry about those things on your own if they run over insecure protocols such as plaintext TCP/UDP connection. This helps ensure access control by only allowing traffic from authorized IPs through service mesh.
6. Nginx Service Mesh (NSM)
Nginx service mesh is a lightweight service mesh for kubernetes with a zero-trust environment providing encrypted traffic between containers.
It manages data traffic between containers using the data plane powered by Nginx Plus. Nginx service mesh focuses on the following.
- Security: mTLS‑encrypted traffic between services.
- Traffic management: Policy managed traffic control between services with rate limiting and circuit breakers.
- Visualization: Inbuilt grafana dashboard provided visibility in to NGINX plus metrics.
- Hybrid deployments: Legacy applications can community with service mesh through Nginx ingress controller.
Kuma service mesh was originally created by Kong, Inc and is now a CNCF sandbox project. It is built on top of the Envoy proxy. It can act as a service mesh for both the kubernetes cluster and VMs.
Following are the key features of Kuma
- Universal Control Plane
- Lightweight Data Plane
- mTLS & TLS rotation
- Fault Injection
- Traffic tracing and traffic metrics
- Transparent proxying
Other Service Mesh Tools To Consider
Following are the other CNCF based service mesh tools to look at.
- Gloo Mesh
- Grey Matter
- Service Mesh Interface
- Network Service Mesh
In this blog, we have looked at the list of best service mesh tools for microservice-based architecture.
I will keep updating this blog with the latest information about the tools and their releases.