Brief overview of major Kubernetes distributions and cloud providers (2nd Edition, 2021)

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This is the second edition of the article about major Kubernetes distribution. Click here for the first edition of the article.

I really feel Kubernetes is everywhere. It took over the place of OpenStack, Apache Mesos and Cloud Foundry. All major cloud providers are providing containers services, utilizing Kubernetes. Major Linux vendors are having container products based on Kubernetes. Previously, SUSE did not have Kubernetes offering but they acquired Rancher (completed on 2020 Dec). VMware had …

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Curated list of messaging and collaboration solutions (2021)

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Introduction about messaging and collaboration solutions

Slack is used by many enterprises and open source projects, like CNCF, Kubernetes, Istio, Rancher and etc. Besides that, many communities use it. In this article, we are going to explore some of the chat and collaboration solutions.

Table: Curated list of messaging and collaboration solutions

Name License and pricing model Advantages Cons and pain points
  • Proprietary. Free plans is available but no self hosting
  • Paid plans are …
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About the Quest TLD domain

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The .Quest TLD domain, together with, .Beauty, .Hair, .Skin, and .Makeup are available for public to purchase. To me, it seems the news was not advertised a lot (I mainly use Twitter). While browsing for some new domains I discovered these TLD are already on sale. These domains are under the operation of Generation.XYZ LLC. They have a blog about it. The "Quest" means pursuing, searching, or an attempt to achieve something or a …

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A short experiment with Transparent Huge Pages (THP) on Linux

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Introduction of THP

A typical page in Linux memory management system is 4KB. To enhance the efficiency of allocating large amount of memory pages, the OS could make use of huge memory pages. Instead of using 4KB as a page, the OS could allocate a bigger block of page size in 2MB or 1GB. To use huge memory pages, the OS need to be configured so that the memory is preserved or allocated. Refer to the …

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Brief overview of selected AWS online training courses and discounts

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  • Edit 1: In Apr 2021, DolfinED moved to a subscription based model
  • Edit 2: DolfinED AWS courses in Udemy are not accepting new enrollment

Amazon Web Services (AWS) currently is the market leader in cloud computing. Azure and Google Cloud Platform is the second and third place respectively. If you are interested in AWS certification path, you can check out the official site.

There are lots of online training courses about AWS certifications. This article would …

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Curated list of open source and low-cost wiki software (2020)

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Introduction about wiki software

I liked using Atlassian Confluence as wiki or knowledge management application. However, Atlassian had announced that the standalone server version would be gone in 2021 February. Also, there would be a price increase of all the existing data center version of Atlassian software.

So, let us look at other alternatives. In this article, I would briefly describe several open source and low-cost wiki and knowledge management software. We would have a summary …

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