DOCSLIB.ORG

The Nosh Package

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
The Nosh Package The nosh package The nosh package is a suite of system-level utilities for initializing and running a BSD or Linux system, for managing nosh pages: daemons, for managing terminals, and for managing logging. introduction and blurb For the BSD user source package FreeBSD binary It is originally intended for use on BSDs, and to fill the gaps where BSD users don't have the option of launchd, systemd, packages or upstart, and want more than what other daemontools family systems provide. The BSD user sees: Debian Linux binary packages BSD licensing: It's licensed under the MIT Expat Licence, the ISC Licence, and the FreeBSD Licence (in the The timorous admin's belief that they are all in essence identical). installation how-to A real-world worked no more waiting for rc.delay: The service management brings things up a lot more quickly. example of setting up and running a service skills transferrability from the systemd world: There are whole suites of shim layers to make things familiar with nosh for someone coming to BSD from a systemd or upstart Linux background. Want to run systemctl start wibble or A quick look at nosh initctl status wibble? You still can, and the command will do the equivalent nosh service management thing. user-space virtual skills portability from the OpenBSD world: Want to run rcctl enable wibble? You still can, and the command terminals will do the equivalent nosh service management thing. Combining the nosh user-space virtual properly designed dæmon management: The replacement service command does not have the pitfalls of the terminals with BRLTTY BSD service command. It is part of the daemontools family design that dæmons are always started from a known roadmap parent process with a known initial execution state, a clean environment that is fully adjustable on a per-dæmon command and tool list basis, and a known set of open file descriptors. Related pages: transparency and interoperability: Service configuration is expressed with ordinary files, directories, and symbolic links in the filesystem; so is service status. nosh service bundles and their configurations can be run scripts and service inspected and modified with the likes of the ls, rm, find, and ln commands, with no need for a running Desktop units side-by-side Bus, and even without the management programs running at all. Status and control information for running user-space virtual dæmons is in a well-known format that has been stable since the 1990s and that not only can be manipulated console dæmons for with other management toolsets but can also be manipulated from ad hoc tools incorporating the likes of Peter Linux (a white paper Ruibal's and Andrés J. Díaz's supervise library for Python. from 2006) designing Unix/Linux easy ports of Linux packages: Have a package that comes with a service unit? It can be run through convert- dæmon programs for systemd-units to produce a native nosh service bundle that will run on a BSD. Have a package that comes with a service management (by service unit and a socket unit? Such a pair can be converted, too. the nosh service manager, and by many notions from UNIXes: It's a fully fledged service and system management package. Like the AIX SRC, system others going back to management is separated from service management. Like the Solaris SMF, there are targets/milestones. 1992, in fact) Terminal login is arranged as proper, fully fledged, services that are integrated with the service management and not bolted on to the side of it. Other people's stuff that might or might not be useful: console-free operation: The system might be a smart telephone, or a server in a datacentre, or even a watch. It's not necessarily convenient to operate it using the system console. It might not even have a physical serial A Chef cookbook to port socket. So kernel (and other) logs go to log directories; the terminal management system provides user- install/configure nosh space virtual terminals that can be accessed from an SSH session in a pinch; and mechanisms are not in general from the source designed to demand the use of the console. package, by Kevin Berry polish: This doesn't just hand over the raw toolset and leave the rest to you. This package runs real BSD machines right now, and has been for some time. One of the early goals of the package was to write service bundles that did what the 157 scripts in FreeBSD's /etc/rc.d do. See the roadmap for the detailed status of this; but there's enough already done for running working desktop and low-end server machines. no more waiting for Godot: The launchd on BSD train is never coming and it's long past time to realize that. It's now 2015, and one can do proper service and system management on BSD right now, with tools that have been succesfully running FreeBSD systems for a couple of years at this point. And you don't have to learn XML, let alone put it into process #1. For the Linux user However, it can also be used by Linux users, Debian Hurd users, and others. Conversely, the Linux user sees: It's not systemd: This is a point in its own right, for some people. A rather more sensible point of view is that it's part of maintaining heterogeneity in Linux. systemd unit files do not lock one in to systemd forevermore, because one can run them through convert-systemd-units and get nosh service bundles. And nosh is part of a family of toolsets where mix-and-match composability is a design feature. But one doesn't have to un-learn all systemd administration habits: Like the BSD user, one can still go on typing systemctl start wibble if one wants. Or even service wibble start. There is a bunch of System 5 command shims, too. But it is in the daemontools family: The fundamental concepts and architecture are well-known; other people's toolsets will interoperate, mix-and-match fashion; and there are widespread third party resources, from tutorials to run program collections, that can be adapted to it with ease. Know about running daemontools in a Docker container? The principles are much the same. (Indeed it is simpler. A service bundle for SSH is one of the several hundred service bundles pre-supplied, so you don't have to make one.) Know about running Ruby under runit? The ideas are all the same, and the change to the run script is a simple substitution of envdir for chpst -e, although that's by no means mandatory. Know about running node under runit or running node under daemontools? The same principles apply; in the latter case the same command names even apply, although one can do the logging in a better way (see the Nosh Guide pages on logging). Know about running Tomcat under daemontools? Again, it's just a simple change from multilog t to cyclog (since this is the common use case where none of the advanced features of multilog are used). Of course, it's not even that if one has multilog present, taken out of daemontools or daemontools encore; since one can mix and match. separation of policy and mechanism: service-manager is "mechanism", providing the raw mechanics of supervising dæmon processes. system- control and service-dt-scanner (a.k.a. svscan) are "policy", determining when, where, and why services are started and stopped. separation of service management and system management: The overall state of the system — emergency mode, rescue mode, "multi- user" mode, halted, and so forth — is the domain of the system-manager. The states of individual services — stopped, running, starting, stopping, failed — are the domain of the service-manager. avoidance of continually regenerated ephemera: Things such as mount@, fsck@, and ttylogin@ services are not stored in non-persistent storage and regenerated on the fly over and over again. Taking a leaf out of the BSD books, they are stored persistently and re-generated when the source information actually changes. See the roadmap for what's in store when it comes to automating this. properly designed dæmon management: As for BSD users (q.v.). console-free operation: As for BSD users (q.v.). transparency and interoperability: As for BSD users (q.v.). no kernel upgrade treadmill: There are no requirements that one be running the absolute latest kernel and keep on upgrading. nosh doesn't require Desktop Bus in the kernel. polish: One of the stumbling blocks for daemontools adoption has historically been rounding up run programs. Several people have published collections of run scripts, such as Gerrit Pape's famous collection of just under 80. There are (as of version 1.14) some 230 pre-supplied service bundle directories in the nosh-bundles package, ranging from GNU cron to mongodb, from OSSEC HIDS to RabbitMQ server, from exim4 to dnscache, from bcron to OpenStack. no central logging bottleneck: The daemontools family way is for individual services to have entirely separate log streams processed by entirely separate log services, which have no access to one another's files and directories and have no need of being the superuser at any point. A service that logs a vitally important line once per week won't have its output of the last few weeks entirely flooded out of the log by a prolific service generating thousands of lines of low importance stuff per minute. no mandatory logging tool: There's a whole range of ways to log just to local log files alone, from dumblog (supplied with freedt) through cyclog (supplied with nosh) to s6-log (supplied with s6).
Load more

Recommended publications
  • Introduction Use Runit with Traditional Init (Sysvinit)
    2021/07/26 19:10 (UTC) 1/12 Runit Runit Introduction runit is a UNIX init scheme with service supervision. It is a cross-platform Unix init scheme with service supervision, a replacement for sysvinit, and other init schemes and supervision that are used with the traditional init. runit is compatible with djb's daemontools. In Unix-based computer operating systems, init (short for initialization) is the first process started during booting of the computer system. Init is a daemon process that continues running until the system is shut down. Slackware comes with its own legacy init (/sbin/init) from the sysvinit package, that used to be included in almost all other major Linux distributions. The init daemon (or its replacement) is characterised by Process ID 1 (PID 1). To read on the benefits of runit, see here: http://smarden.org/runit/benefits.html * Unless otherwise stated, all commands in this article are to be run by root. Use runit with traditional init (sysvinit) runit is not provided by Slackware, but a SlackBuild is maintained on https://slackbuilds.org/. It does not have any dependencies. As we do not want yet to replace init with runit, run the slackbuild with CONFIG=no: CONFIG=no ./runit.SlackBuild Then install the resulting package and proceed as follows: mkdir /etc/runit/ /service/ cp -a /usr/doc/runit-*/etc/2 /etc/runit/ /sbin/runsvdir-start & Starting via rc.local For a typical Slackware-stlyle service, you can edit /etc/rc.d/rc.local file if [ -x /sbin/runsvdir-start ]; then /sbin/runsvdir-start & fi and then edit write /etc/rc.d/rc.local_shutdown #!/bin/sh SlackDocs - https://docs.slackware.com/ Last update: 2020/05/06 08:08 (UTC) howtos:slackware_admin:runit https://docs.slackware.com/howtos:slackware_admin:runit RUNIT=x$( /sbin/pidof runsvdir ) if [ "$RUNIT" != x ]; then kill $RUNIT fi Then give rc.local_shutdown executive permission: chmod +x /etc/rc.d/rc.local_shutdown and reboot Starting via inittab (supervised) Remove the entries in /etc/rc.d/rc.local and /etc/rc.d/rc.local_shutdown described above.
    [Show full text]
  • Troubleshooting Guide
    Java Platform, Standard Edition Troubleshooting Guide Release 9 E61074-05 October 2017 Java Platform, Standard Edition Troubleshooting Guide, Release 9 E61074-05 Copyright © 1995, 2017, Oracle and/or its affiliates. All rights reserved. This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. Except as expressly permitted in your license agreement or allowed by law, you may not use, copy, reproduce, translate, broadcast, modify, license, transmit, distribute, exhibit, perform, publish, or display any part, in any form, or by any means. Reverse engineering, disassembly, or decompilation of this software, unless required by law for interoperability, is prohibited. The information contained herein is subject to change without notice and is not warranted to be error-free. If you find any errors, please report them to us in writing. If this is software or related documentation that is delivered to the U.S. Government or anyone licensing it on behalf of the U.S. Government, then the following notice is applicable: U.S. GOVERNMENT END USERS: Oracle programs, including any operating system, integrated software, any programs installed on the hardware, and/or documentation, delivered to U.S. Government end users are "commercial computer software" pursuant to the applicable Federal Acquisition Regulation and agency- specific supplemental regulations. As such, use, duplication, disclosure, modification, and adaptation of the programs, including any operating system, integrated software, any programs installed on the hardware, and/or documentation, shall be subject to license terms and license restrictions applicable to the programs. No other rights are granted to the U.S.
    [Show full text]
  • Container Technologies
    Zagreb, NKOSL, FER Container technologies Marko Golec · Juraj Vijtiuk · Jakov Petrina April 11, 2020 About us ◦ Embedded Linux development and integration ◦ Delivering solutions based on Linux, OpenWrt and Yocto • Focused on software in network edge and CPEs ◦ Continuous participation in Open Source projects ◦ www.sartura.hr Introduction to GNU/Linux ◦ Linux = operating system kernel ◦ GNU/Linux distribution = kernel + userspace (Ubuntu, Arch Linux, Gentoo, Debian, OpenWrt, Mint, …) ◦ Userspace = set of libraries + system software Linux kernel ◦ Operating systems have two spaces of operation: • Kernel space – protected memory space and full access to the device’s hardware • Userspace – space in which all other application run • Has limited access to hardware resources • Accesses hardware resources via kernel • Userspace applications invoke kernel services with system calls User applications E.g. bash, LibreOffice, GIMP, Blender, Mozilla Firefox, etc. System daemons: Windowing system: User mode Low-level system systemd, runit, logind, X11, Wayland, Other libraries: GTK+, Qt, EFL, SDL, SFML, Graphics: Mesa, AMD components networkd, PulseAudio, SurfaceFlinger FLTK, GNUstep, etc. Catalyst, … … (Android) C standard library Up to 2000 subroutines depending on C library (glibc, musl, uClibc, bionic) ( open() , exec() , sbrk() , socket() , fopen() , calloc() , …) About 380 system calls ( stat , splice , dup , read , open , ioctl , write , mmap , close , exit , etc.) Process scheduling Memory management IPC subsystem Virtual files subsystem Network subsystem Kernel mode Linux Kernel subsystem subsystem Other components: ALSA, DRI, evdev, LVM, device mapper, Linux Network Scheduler, Netfilter Linux Security Modules: SELinux, TOMOYO, AppArmor, Smack Hardware (CPU, main memory, data storage devices, etc.) TABLE 1 Layers within Linux Virtualization Virtualization Concepts Two virtualization concepts: ◦ Hardware virtualization (full/para virtualization) • Emulation of complete hardware (virtual machines - VMs) • VirtualBox, QEMU, etc.
    [Show full text]
  • Slides for the S6 Lightning Talk
    The s6 supervision suite Laurent Bercot, 2017 What is an init system ? - “init” is vague terminology. “init wars” happened because nobody had a clear vision on what an init system even is or should be. - The 4 elements of an init system: /sbin/init, pid 1, process supervision, service management. - Not necessarily in the same process. Definition: process supervision A long-lived process (daemon) is supervised when it’s spawned by the supervision tree, a set of stable, long-lived processes started at boot time by pid 1. (Often just pid 1.) Supervision is a good pattern: the service is stable and launched in a reproducible env. Supervision only applies to daemons. Service management: definition - Boot time: bring all services up - Shutdown time: bring all services down - More generally: change services’ states Services can be oneshots (short-lived programs with side effects) or longruns (daemons). They have dependencies, which the service manager should enforce. What features do “init”s offer ? - Integrated init systems (systemd, launchd, upstart): “the big guys”. All four elements in one package, plus out-of-scope stuff. - sysvinit, BSD init: /sbin/init, pid 1, supervision (/etc/inittab, /etc/gettys). Service manager not included: sysv-rc, /etc/rc - OpenRC: service manager. - Epoch: similar to sysvinit + sysv-rc The “daemontools family” - /etc/inittab supervision is impractical; nobody uses it for anything else than gettys. - daemontools (DJB, 1998): the first project offering flexible process supervision. Realistic to supervise all daemons with it. - daemontools-encore, runit, perp, s6: supervision suites. - nosh: suite of tools similar to s6, in C++ Supervision suites are not enough - Only ¼ of an init system.
    [Show full text]
  • 27Th Large Installation System Administration Conference (LISA '13)
    conference proceedings Proceedings of the 27th Large Installation System Administration Conference 27th Large Installation System Administration Conference (LISA ’13) Washington, D.C., USA November 3–8, 2013 Washington, D.C., USA November 3–8, 2013 Sponsored by In cooperation with LOPSA Thanks to Our LISA ’13 Sponsors Thanks to Our USENIX and LISA SIG Supporters Gold Sponsors USENIX Patrons Google InfoSys Microsoft Research NetApp VMware USENIX Benefactors Akamai EMC Hewlett-Packard Linux Journal Linux Pro Magazine Puppet Labs Silver Sponsors USENIX and LISA SIG Partners Cambridge Computer Google USENIX Partners Bronze Sponsors Meraki Nutanix Media Sponsors and Industry Partners ACM Queue IEEE Security & Privacy LXer ADMIN IEEE Software No Starch Press CiSE InfoSec News O’Reilly Media Computer IT/Dev Connections Open Source Data Center Conference Distributed Management Task Force IT Professional (OSDC) (DMTF) Linux Foundation Server Fault Free Software Magazine Linux Journal The Data Center Journal HPCwire Linux Pro Magazine Userfriendly.org IEEE Pervasive © 2013 by The USENIX Association All Rights Reserved This volume is published as a collective work. Rights to individual papers remain with the author or the author’s employer. Permission is granted for the noncommercial reproduction of the complete work for educational or research purposes. Permission is granted to print, primarily for one person’s exclusive use, a single copy of these Proceedings. USENIX acknowledges all trademarks herein. ISBN 978-1-931971-05-8 USENIX Association Proceedings of the 27th Large Installation System Administration Conference November 3–8, 2013 Washington, D.C. Conference Organizers Program Co-Chairs David Nalley, Apache Cloudstack Narayan Desai, Argonne National Laboratory Adele Shakal, Metacloud, Inc.
    [Show full text]
  • Your Init; Your Choice
    Your Computer; Your Init; Your Choice By Steve Litt Version 20150108_1348 Copyright © 2015 by Steve Litt Creative Commons Attribution-NoDerivatives 4.0 International License http://creativecommons.org/licenses/by-nd/4.0/legalcode Available online at http://www.troubleshooters.com/linux/presentations/golug_inits/golug_inits.pdf NO WARRANTY, use at your own risk. Slide 1 of 26 Your Computer; Your Init; Your Choice Steve Litt System Overview ● Kernel runs one program, init. ● Everything else run directly or indirectly by init. Slide 2 of 26 Your Computer; Your Init; Your Choice Steve Litt Many Different Init Systems ● Epoch ● nosh ● OpenRC ● perp ● RichFelker ● runit ● s6 ● systemd ● sysvinit ● Upstart ● uselessd ● Many more ● There's an init for every situation ● You can make your own Slide 3 of 26 Your Computer; Your Init; Your Choice Steve Litt Full vs Partial ● Kernel->full-init at PID1->daemons – Systemd, sysvinit, runit, Epoch, Upstart, etc. ● Kernel->PID1->partial-init->daemons – OpenRC, daemontools, damontools-encore, etc. Slide 4 of 26 Your Computer; Your Init; Your Choice Steve Litt Many Features ● Socket Activation ● Parallel starting ● Event controlled ● Sequential starting ● Daemontools-like ● Numeric ordering ● Simplicity ● Dependency ordering ● Descriptive config ● Work with sysvinit scripts ● Script config ● OS toolkit ● Forget features ● Look for benefits that fit your priorities and situation Slide 5 of 26 Your Computer; Your Init; Your Choice Steve Litt Many Routes to Benefits ● Within and outside of init ● With or without sockets ● With or without packaging ● Cutting edge or oldschool Slide 6 of 26 Your Computer; Your Init; Your Choice Steve Litt Bogus Characterizations ● ___ is a toy. – What does that even mean? ● ___ is not ready for prime time.
    [Show full text]
  • FAQ Release V1
    FAQ Release v1 The Syncthing Authors Jul 28, 2020 CONTENTS 1 What is Syncthing?1 2 Is it “syncthing”, “Syncthing” or “SyncThing”?3 3 How does Syncthing differ from BitTorrent/Resilio Sync?5 4 What things are synced?7 5 Is synchronization fast?9 6 Why is the sync so slow? 11 7 Why does it use so much CPU? 13 8 Should I keep my device IDs secret? 15 9 What if there is a conflict? 17 10 How do I serve a folder from a read only filesystem? 19 11 I really hate the .stfolder directory, can I remove it? 21 12 Am I able to nest shared folders in Syncthing? 23 13 How do I rename/move a synced folder? 25 14 How do I configure multiple users on a single machine? 27 15 Does Syncthing support syncing between folders on the same system? 29 16 When I do have two distinct Syncthing-managed folders on two hosts, how does Syncthing handle moving files between them? 31 17 Is Syncthing my ideal backup application? 33 18 Why is there no iOS client? 35 19 How can I exclude files with brackets ([]) in the name? 37 20 Why is the setup more complicated than BitTorrent/Resilio Sync? 39 21 How do I access the web GUI from another computer? 41 i 22 Why do I get “Host check error” in the GUI/API? 43 23 My Syncthing database is corrupt 45 24 I don’t like the GUI or the theme. Can it be changed? 47 25 Why do I see Syncthing twice in task manager? 49 26 Where do Syncthing logs go to? 51 27 How can I view the history of changes? 53 28 Does the audit log contain every change? 55 29 How do I upgrade Syncthing? 57 30 Where do I find the latest release? 59 31 How do I run Syncthing as a daemon process on Linux? 61 32 How do I increase the inotify limit to get my filesystem watcher to work? 63 33 How do I reset the GUI password? 65 ii CHAPTER ONE WHAT IS SYNCTHING? Syncthing is an application that lets you synchronize your files across multiple devices.
    [Show full text]
  • The Qmail Handbook by Dave Sill ISBN:1893115402 Apress 2002 (492 Pages)
    < Free Open Study > The qmail Handbook by Dave Sill ISBN:1893115402 Apress 2002 (492 pages) This guide begins with a discussion of qmail s history, architecture and features, and then goes into a thorough investigation of the installation and configuration process. Table of Contents The qmail Handbook Introduction Ch apt - Introducing qmail er 1 Ch apt - Installing qmail er 2 Ch apt - Configuring qmail: The Basics er 3 Ch apt - Using qmail er 4 Ch apt - Managing qmail er 5 Ch apt - Troubleshooting qmail er 6 Ch apt - Configuring qmail: Advanced Options er 7 Ch apt - Controlling Junk Mail er 8 Ch apt - Managing Mailing Lists er 9 Ch apt - Serving Mailboxes er 10 Ch apt - Hosting Virtual Domain and Users er 11 Ch apt - Understanding Advanced Topics er 12 Ap pe ndi - How qmail Works x A Ap pe ndi - Related Packages x B Ap pe ndi - How Internet Mail Works x C Ap pe ndi - qmail Features x D Ap pe - Error Messages ndi x E Ap pe - Gotchas ndi x F Index List of Figures List of Tables List of Listings < Free Open Study > < Free Open Study > Back Cover • Provides thorough instruction for installing, configuring, and optimizing qmail • Includes coverage of secure networking, troubleshooting issues, and mailing list administration • Covers what system administrators want to know by concentrating on qmail issues relevant to daily operation • Includes instructions on how to filter spam before it reaches the client The qmail Handbook will guide system and mail administrators of all skill levels through installing, configuring, and maintaining the qmail server.
    [Show full text]
  • Supervisor a Process Control System
    Supervisor A Process Control System Sergej Kurakin Need for Long Running Scripts under Linux ● Job Queues in PHP (or any other language) ● Application Servers in PHP (or any other language) ● NodeJS Applications ● Selenium WebDriver + Xvfb ● You name it Solutions ● Self-Made Daemons ● SysV / systemd / launchd ● Screen or tmux ● nohup ● Five star crons ● Daemontools ● Might be more possible solutions ● Supervisor ● Docker Needed options ● Automatic start ● Automatic restart ● Execute under some user account ● Logs (stdout and stderr) ● Easy to use Self-Made Daemons ● Wrote once by myself ● I will never do it twice ● Third-party is not always good or maintainable ● Lots of debugging ● All features must be implemented by yourself ● Depends on SysV/launchd/systemd Screen / tmux or nohup ● No automatic start ● No automatic restart ● Logs... daemontools ● Old (but not obsolete) ● Does not work under some virtualizations ● Might be hard to configure Five star cron ● Still popular and usable ● Perfect for job queues (in some situations) Docker This topic deserves a separate talk from someone who has good experience with Docker in production environment. Supervisor! Supervisor? Supervisor is a client/server system that allows its users to monitor and control a number of processes on UNIX-like operating systems. Features ● Simple - INI-style files ● Centralized - one place to manage ● Efficient - fork, don’t daemonize ● Extensible - events and XML-RPC interface ● Compatible - Linux, Mac OS X, Solaris and FreeBSD ● Proven Components supervisord
    [Show full text]
  • Achieve Fastest System Startup Sequences
    Achieve Fastest System Startup Sequences. How to tune an Embedded System. Embedded Systems Design Conference ARM vs. x86 July 3, 2014 Kei Thomsen MicroSys Electronics GmbH Agenda • Target: reduce startup time of embedded systems. • Meaning of Fast-Boot. • Comparison of Operating Systems, function, benefit and startup times. • Embedded Systems, boot medium and behavior. • Identifying time consuming artifacts. • Summary. ESDC, July 3, 2014 2 © MicroSys Electronics GmbH Meaning of Fast-Boot? • Sense of time depends on the Application • Is a Windows Start below 60 seconds fast? • Do I want to wait 2 seconds for my camera to start? • An endoscope must be available after a power fault within 0.8 seconds, including graphic on 2 screens: Not possible? It is possible! • Fast-Boot = System start time from reset to running application in shortest time. ESDC, July 3, 2014 3 © MicroSys Electronics GmbH Comparison of Operating Systems, function, benefit and startup times. Standard Operating System Real Time Operating System (RTOS) Linux, Windows (CE) OS-9, QNX, VxWorks … • „All Inclusive Plus“. • „Bed & Breakfast“. • extensive and complex. • simple and fast. • Many functions already included • Additional functions are added and build in. and configured. • Simple to set up, as everything • Simple to create and extend the is included. functionality volume. • Many components available, • Only functions, which are really were it is difficult to understand used / needed. No „nice to have what it is for, or needed by other features“. components. • Long startup times • Very fast startup times ESDC, July 3, 2014 4 © MicroSys Electronics GmbH Function und benefit in Linux (Embedded) • The Kernel-Start of a Linux System initializes the build-in Kernel driver.
    [Show full text]
  • Gentoo Kernel Recent and Future Project
    Gentoo Kernel recent and Future project Fast Releasing and Testing of Gentoo Kernel Packages and Future plans of the Gentoo Kernel Project Alice Ferrazzi <[email protected]> kernel :~ $ whoami - Gentoo Kernel Project Leader - Gentoo Kernel Security - Gentoo General System Administrator - Gentoo Proxy Maintainer - Gentoo Study Meeting Tokyo Organizator Tokyo University of Technology - Google Summer of Code 2017 for Gentoo organization - Currently searching job as researcher in Japan Summary ● What is Gentoo? ○ Why I should consider Gentoo? ● What is Gentoo Kernel Project? ● Kernel related project in Gentoo ● Gentoo Kernel recent and Future project ○ Toward Automation ○ Gentoo Kernel CI ○ kernel security live patch ○ Considering PAX fork ● Concluding What is Gentoo? ● Highly customizable meta-distribution ● Built from source and support for user patching ● Available in most architecture ● Freedom of choice (OpenRC, SystemD, Runit, Epoch, and Busybox) ● Easy maintenance (also of the Linux Kernel) Who is using Gentoo? ● Chrome OS ○ Chrome OS Has Double the Marketshare of Regular Linux in USA(2017/03) ○ Chromebooks outsold Macs for the first time in the US (2016/05) ● Softbank Pepper (NAOqi OS) ● CoreOS ● Most of Gentoo’s sponsors run Gentoo: ○ https://www.gentoo.org/inside-gentoo/sponsors/ ● Daniel Robbins maintains a useful graphic of Gentoo derivatives: ○ http://www.funtoo.org/Gentoo_Ecosystem Why I should consider Gentoo? ● Easy management of most recent upstream including kernel ● Many Kernel options (gentoo-sources, git-sources, rt-sources, ck-sources) ● Increased security with Hardened package ● Kernel Patches managed by package settings (USE flag) ● Gentoo Kernel wiki documentation ● Automatic Kernel deblobing for specific kernel (ck-sources, hardened-sources, rt-sources) What is the Gentoo Kernel Project? ● Writing Gentoo Kernel guide and policy ● Stabilizing Gentoo Kernel for most architectures ● Releasing Gentoo Kernel sources packages ● Writing library for managing the Gentoo Kernel sources installation.
    [Show full text]
  • System, Software, DR, and Skill Requirements Webneers, an EFNEP Web Application
    System, Software, DR, and Skill Requirements WebNeers, An EFNEP Web Application Youth Learning Institute, Clemson University 10-27-2016 Contents Minimum System Requirements .................................................................................................................. 2 Software Requirements ................................................................................................................................ 2 Disaster Recovery Requirements* ................................................................................................................ 2 Skill Requirements ........................................................................................................................................ 3 Development............................................................................................................................................. 3 Server Side ............................................................................................................................................ 3 Client Side ............................................................................................................................................. 3 System Administration .............................................................................................................................. 3 Data and Database Management ............................................................................................................. 3 Competency Matrix .....................................................................................................................................
    [Show full text]