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Pulsar on KubeSphere: Installing Distributed Messaging and Streaming Platform

KubeSphere, an open-source container platform running on Kubernetes, provides users with an app-centric experience. In this connection, it features a comprehensive set of tools for developers to manage apps across their entire lifecycle. In this article, I will demonstrate how to install Apache Pulsar on a KubeSphere cluster as an example. Apache Pulsar, a cloud-native, distributed messaging and streaming tool, represents a go-to platform to meet the real-time event-streaming needs of enterprises.

Before You Begin

To install Pulsar on KubeSphere, you need to do the following beforehand:

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Scale Your Cluster With KubeKey: Best Practices To Make Life Easier for Kubernetes Cluster Operators

In my last post, I demonstrated how to set up a three-node Kubernetes cluster using KubeKey. As I mentioned in the article, KubeKey is a lightweight, powerful installer that is able to install Kubernetes as well as its related add-ons in a quick and convenient way. In fact, KubeKey can do way more than that as it is also an efficient tool to scale your Kubernetes cluster.

On some cloud platforms, you can directly scale your cluster by increasing or decreasing the number of nodes. Usually, this does not entail complex operations as these platforms will do almost everything for you and you only need to click a few buttons. However, in some on-premises environments, you may need to manually change the number of nodes. In this article, I am going to demonstrate how to scale out and scale in your cluster using KubeKey. The steps are listed as follows:

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TiDB on KubeSphere: Using Cloud-Native Distributed Database on Kubernetes Platform Tailored for Hybrid Cloud

In a world where Kubernetes has become the de facto standard to build application services that span multiple containers, running a cloud-native distributed database represents an important part of the experience of using Kubernetes. In this connection, TiDB, a cloud-native, open-source NewSQL database that supports hybrid transactional and analytical processing (HTAP) workloads, meets those needs admirably. Its architecture is suitable for Kubernetes, and it is MySQL-compatible. TiDB also features horizontal scalability, strong consistency, and high availability.

In addition to TiDB, I am also using KubeSphere, an open-source distributed operating system that manages cloud-native applications with Kubernetes as its kernel. It provides a plug-and-play architecture for the seamless integration of third-party applications to boost its ecosystem. KubeSphere can be run anywhere as it is highly pluggable without any hacking into Kubernetes.