Brief overview of selected AWS online training courses and discount

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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 briefly talk about some of them. Besides that, this article would provide links so that you may get a discounted price if it is …

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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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Curated list of open source and low-cost bug and issue tracking software (2020)

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Introduction about bug and issue tracking software

I had to admit I liked Atlassian Jira as a bug and issue tracking software. However, Atlassian had announced that when it's in 2021 February, the standalone server version would be gone. Also, there would be a price increase of all the existing data center version.

So let's look at other alternatives. In this article, I would briefly describe several open source and low cost bug and issue tracking …

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SSH public key authentication could bypass your security (PAM) policy

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Even after using Linux for years, you would always learn something new everyday. In this short article, I would talk about how SSH public key authentication could bypass security policy.

Let's start with pluggable authentication module (PAM). By using Linux PAM, the system could use modules to enhance the security of a system. For example, PAM could setup security policy that a password has to meet certain length and complexity. Another use case of the PAM …

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Brief overview of major Kubernetes distributions and cloud providers (1st Edition 2020)

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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. SUSE does not have Kubernetes offering but they acquired Rancher recently. VMware had acquired Pivotal and integrated Pivotal Kubernetes Service (PKS) with vSphere platform. HPE joins the competition with their HPE Ezmeral software portfolio.

This article describes and …

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