Show HN: A simple FOSS and self-hosted budgeting app https://ift.tt/3ik9Zwz

Show HN: A simple FOSS and self-hosted budgeting app https://ift.tt/2qrzPJx August 8, 2020 at 03:22AM

Show HN: Home cooking recipes index with powerful filtering https://ift.tt/3fBbbdf

Show HN: Home cooking recipes index with powerful filtering https://ift.tt/30D6fAz August 7, 2020 at 11:28PM

Show HN: 33% Memory Savings by Re-Ordering Go Struct Fields https://ift.tt/2XDTJ1H

Show HN: 33% Memory Savings by Re-Ordering Go Struct Fields https://ift.tt/3ioEXUf August 8, 2020 at 12:01AM

Show HN: Kafka Sprout – Web GUI for Your Kafka Clusters https://ift.tt/2XGKVYR

Show HN: Kafka Sprout – Web GUI for Your Kafka Clusters https://ift.tt/2DLvh7g August 7, 2020 at 11:39PM

Show HN: Guestboard 2.0 – Our Alternative to FB Events – Now with Video Chat https://ift.tt/3krjKLh

Show HN: Guestboard 2.0 – Our Alternative to FB Events – Now with Video Chat https://guestboard.co August 7, 2020 at 10:24PM

Show HN: Session–a pomodoro timer app with beautiful analytics https://ift.tt/2CcxsR8

Show HN: Session–a pomodoro timer app with beautiful analytics https://ift.tt/2XDDwtk August 7, 2020 at 08:32PM

Show HN: Auto Generate REST API Client from Flask https://ift.tt/3ipGbip

Show HN: Auto Generate REST API Client from Flask https://ift.tt/3kuYUuP August 7, 2020 at 07:56PM

Show HN: Open-source a simple profile card builder for developers https://ift.tt/3koflJ5

Show HN: Open-source a simple profile card builder for developers https://ift.tt/3ieLSzx August 7, 2020 at 02:10PM

Show HN: In-Memory Filesystem for Hadoop https://ift.tt/3gErW8Q

Show HN: In-Memory Filesystem for Hadoop https://ift.tt/3a6BNSv August 7, 2020 at 08:58PM

Launch HN: Nestybox (YC S20) – Containers beyond microservices https://ift.tt/3ihto1i

Launch HN: Nestybox (YC S20) – Containers beyond microservices Hi HN, This is Cesar Talledo and Rodny Molina, co-founders of Nestybox (www.nestybox.com). Nestybox has developed a new container runtime that sits under Docker/containerd (it's a new type of runc) and enables containers to act as virtual-servers capable of running software such as systemd, Docker, and Kubernetes, easily and with proper isolation. The motivation came from noticing that containers are great at running microservices but struggle to run system-level software in them such as those mentioned above. That is, in order to run such software in a container, we needed unsecure privileged containers with complex images, custom entrypoints, volume mounts, etc., or alternatively a heavier virtual machine. This did not seem right. We studied the problem and noticed that the container abstraction was not complete enough, meaning that inside the container a root process lacked capabilities to perform certain low-level operations, the namespacing of procfs and sysfs had a few holes, there are limitations for running overlayfs-on-overlayfs, and more. To solve this, we decided to create a new container runtime that would set up the container in such a way that it could run system software easily and without resorting to privileged containers. That is, a user should be able to do "docker run -it some-image" and get a container inside of which she can run systemd, dockerd, or even K8s without problem (much as if it were a virtual machine). After lots of long days, we came up with Sysbox. It's a new type of "runc" and sits below OCI-based container managers (e.g., Docker/containerd). You typically don't interact with Sysbox directly, but rather use Docker (or similar) to launch the containers. Sysbox was forked from the excellent OCI runc in early 2019 and has undergone significant changes since then. It uses OS virtualization techniques such as always enabling the Linux user namespace, uid shifting via shiftfs, partial virtualization of procfs and sysfs, selective syscall trapping in user-space, setting up special mounts into the container, and more. It's written in Go. Here is a video: https://ift.tt/3fAQsGn Today we are happy to announce that we are open-sourcing Sysbox (Apache 2.0). You can find it at https://ift.tt/3fCCcgx . We welcome users and contributors, as it has plenty of room to grow and improve. There are plenty of docs in the repo describing how to use it and how it works. We think Sysbox is a very useful tool to expand the use cases for containers and provides an alternative to virtual machines in many scenarios, particularly for dev environments, testing, CI/CD, and even running legacy apps in containers. In order to pay the bills, Nestybox (the company we founded) will sell a version of Sysbox called Sysbox Enterprise Edition (Sysbox-EE). We are using an open-core model, such that Sysbox-EE is based on the open-source Sysbox and adds a layer of proprietary enterprise level features. We think this model will help us strike a healthy balance between creating useful technology that all can benefit from and keeping the lights on. Thanks for reading and we welcome your feedback. Best, -Cesar & Rodny August 7, 2020 at 08:00PM

Show HN: Hndex.org – a full-text search engine of articles submitted to HN https://ift.tt/2EVn1lO

Show HN: Hndex.org – a full-text search engine of articles submitted to HN https://hndex.org/ August 7, 2020 at 10:17AM

Show HN: Bedrock.io, a solid template for building on Kubernetes, Node and React https://ift.tt/3ifQ95G

Show HN: Bedrock.io, a solid template for building on Kubernetes, Node and React https://bedrock.io/ August 7, 2020 at 03:30PM

Show HN: Devsheets – Quickly find the cheatsheets for everything tech https://ift.tt/2EVUjkJ

Show HN: Devsheets – Quickly find the cheatsheets for everything tech https://ift.tt/31wpElA August 7, 2020 at 03:09PM