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Controlling access to rootless Podman for users

Controlling access to rootless Podman for users

It’s easy to have mistaken assumptions about security controls when it comes to rootless Podman containers.
Dan Walsh
Thu, 6/10/2021 at 1:14pm

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Image by Arek Socha from Pixabay

Recently the Podman team received a Bugzilla report claiming that there was no way to stop rootless Podman from running containers. The reporter set up a user account with no entries in /etc/subuid and /etc/subgid and reported that rootless Podman could still run the hello-world container.

Topics:  
Containers  
Linux  
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Vim vs. Nano vs. Emacs: Three sysadmins weigh in

Vim vs. Nano vs. Emacs: Three sysadmins weigh in

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Image by Patrik Houštecký from Pixabay

Three editors. Three experts. Which Linux text editor is right for you?

Posted:
June 22, 2021

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by
Tyler Carrigan (Red Hat), Amy Marrich (Red Hat, Sudoer), Seth Kenlon (Red Hat), Ricardo Gerardi (Red Hat, Sudoer)

Read the full article on redhat.com

Topics:  
Linux  
Text editors  
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Linux sysadmins: 6 reasons you should write technical articles

Linux sysadmins: 6 reasons you should write technical articles

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Image by StockSnap from Pixabay

Writing a technical article isn’t difficult and doesn’t have to be intimidating. Here are six reasons you should take the plunge.

Read the full article on redhat.com

My goal is to convince you to write articles—specifically, technical articles. The six reasons to write technical articles also apply to other types of written pieces, such as documentation and project proposals. I can’t promise that you’ll become a billionaire or that this will improve your romantic life, but the benefits for you will be higher than for those who choose not to write.

Why should you put effort into something that is voluntary work and (apparently) won’t help you pay your bills?

Posted:
June 16, 2021

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by
Roberto Nozaki (Red Hat, Sudoer)

Topics:  
Linux  
Career  
Read More at Enable Sysadmin

Happy anniversary Enable Sysadmin

Let’s celebrate two years of growth and community.
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Gain a New Skill This Summer With 25% Off Linux Foundation Training & Certification

Summer is here, which means it’s time for summer school! Take advantage of longer days and more downtime by gaining new open source skills to advance your career prospects. With the Open Source Jobs Report finding 93% of hiring managers are having a difficult time filling positions requiring these skills, now is the time to make your move.

To help, we’re offering a 25% discount on ALL training courses, certification exams, bundled offerings and bootcamps. This includes programs exploring in-demand skills like Linux and system administration, cloud and containers, DevOps, web and application development, and more. Simply use code SUMMER25 at checkout to receive your savings.

Check out the full catalog to get started, or if you need some direction first, try taking our career quiz to figure out which career path is best for you!

The post Gain a New Skill This Summer With 25% Off Linux Foundation Training & Certification appeared first on Linux Foundation – Training.

Finding block and file OCP application contents in ODF: Creating a file storage project

Wrapping up how to map application data in an ODF cluster.
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Finding block and file OCP application contents in ODF: Creating the project

Part two in the series covering mapping block storage in ODF clusters.
Read More at Enable Sysadmin

Free Course Explores Hyperledger Besu, the Open Source, Java-Based Ethereum Client

Hyperledger Besu is an Ethereum client designed to be enterprise-friendly for both public and private permissioned network use cases. Accepted as a Hyperledger project in 2019, Besu is the first Hyperledger DLT that can operate on a public blockchain.

Developed under the Apache 2.0 license and written in Java, Hyperledger Besu runs on the Ethereum public network, private networks, and test networks such as Rinkeby, Ropsten, and Görli. Besu implements Proof of Work (Ethash) and Proof of Authority (IBFT 2.0 and Clique) consensus mechanisms and supports enterprise features including privacy and permissioning.

Hyperledger Besu can be used to develop enterprise applications requiring secure, high-performance transaction processing in private networks, making it applicable to many different use cases in both the public and private sectors. It is growing rapidly in popularity and adoption, which is why Hyperledger has partnered with Linux Foundation Training & Certification to develop a new, free online training course to help more individuals get started with this exciting distributed ledger technology, Hyperledger Besu Essentials: Creating a Private Blockchain Network.

The course covers how to install Hyperledger Besu, start up Hyperledger Besu for Ethereum mainnet and build a Hyperledger Besu private network. It also explores how to create a private network with privacy and send a private transaction in a private network using Tessera. This course will provide a learner with insight into how to configure and use Hyperledger Besu to do these activities. It’s perfect for experienced Developers and DevOps professionals who are interested in learning about Hyperledger Besu features and capabilities, and who are looking to expand their blockchain architecture knowledge. It will be also helpful to blockchain architects who are looking to learn more about Ethereum Virtual Machine compatible blockchains.

This course was developed by Thomas Hay, Head of Developer Relations for ConsenSys, who helps to bring the power of the blockchain to the developer community through practical tutorials and learning materials. Tom serves as an instructor for the ConsenSys Academy Blockchain Developer Program Bootcamp. He first got interested in blockchain through his work with student data and got excited about its potential in the education space, leading him on a path to join ConsenSys as a Product Manager on the Academy team. 

Enroll today and upgrade your blockchain skills!  And to get involved with the Besu community, you’re welcome to join the group’s calls and chat channel and make contributions to the project.  Learn more on the Besu wiki.

The post Free Course Explores Hyperledger Besu, the Open Source, Java-Based Ethereum Client appeared first on Linux Foundation – Training.

Participate in the 2021 Open Source Jobs Report!

Take the open source professionals survey

Take the hiring managers survey

The Linux Foundation has once again partnered with edX for the next iteration of our Open Source Jobs Report. The report examines the latest trends in open source careers, which skills are in demand, what motivates open source job seekers, and how employers can attract and retain top talent. This year’s report will also examine the effects of the ongoing pandemic on the industry.

The report is anchored by two surveys, one of which explores what hiring managers are looking for in employees, and one focused on what motivates open source professionals. Ten respondents to each survey (twenty in total) will be randomly selected to receive a US$150 gift card to the new Linux Foundation online store as a thank you for participating!

We encourage you to share your thoughts and experiences. The surveys take around 10 minutes to complete, and all data is collected anonymously. Links to the surveys are at the top and bottom of this post.

Take the open source professionals survey

Take the hiring managers survey

The post Participate in the 2021 Open Source Jobs Report! appeared first on Linux Foundation – Training.

Finding block and file OCP application contents in ODF: The infrastructure

Finding block and file OCP application contents in ODF: The infrastructure

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“Blockitecture Project #2e” by The Marmot is licensed under CC BY 2.0

Part one of a three part series on mapping application data in an OpenShift Data Foundation cluster.

Posted:
July 6, 2021

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by
Alexon Oliveira (Red Hat)

Read the full article on redhat.com

Topics:  
Containers  
Openshift  
Linux  
Read More at Enable Sysadmin