Foredrag om Linux Vserver virtualisering tirsdag den 25. maj 18-21

Posted on by flywheel

Linux VServer er en udvidelse til Linux kernen således at man samtidig kan køre flere adskilte og forskellige userlands på den samme kerne. Derved kan man på den samme maskine på samme tid køre RedHat, SuSE, Debian, osv.

I Linux VServer er der også tænkt på sikkerheden, både imod rettigheder og imod ressource tyveri. Fx. så kan root inde i en Linux VServer gæste “maskine” ikke tilgå hardware, hverken diske, netværk eller andre devices. Man kan tilgå sit eget specielle filsystem som også kan ses fra rod “maskinen”. Derved kan man give root til mennesker man måske ellers ikke ville give det til.

Man kan også forhindre ressource tyveri, fx. kan man begrænse antallet af processer, ram og cpu forbrug. Nogle gange har man behov for at give specielle muligheder til specielle maskiner. Det kan man gøre ved at give gæste “maskinerne” capabilities så de må gøre specielle ting, fx. tilgå specifik hardware.

Under foredraget vil jeg fortælle om mine erfaringer, give eksempler og fortælle hvorfor man altid skal køre Linux VServer, også oven på anden virtualisering.

Læs mere: http://linux-vserver.org/Overview

Om foredragsholder

Jon Bendtsen er uddannet datalog fra KU og har arbejdet i 14 år med computere, de sidste 10 som systemadministrator. Jon Bendtsen har sit eget firma og kan hyres som freelance konsulent.

Om deltagelse

Deltagelse er gratis for medlemmer af DKUUG og SSLUG. Dette kan også gælde for andre foreninger, se annoncering på de respektive foreningers medlemslister eller websider. For andre er der en entré på 50 kr per aften.

Tilmelding bedes sendt til tilmeld(at)dkuug.dk per email, med angivelse af medlemskab af DKUUG, SSLUG eller anden forening, eller om man ikke er medlem af nogen samarbejdende forening.

Man er velkommen til at videresende denne invitation til andre.

Adressen http://findvej.dk/fruebjergvej3,2100 har ca. 200 gratis parkeringspladser, ligger tæt på Ryparken station og er
handikapvenlig.

—
Vel mødt
Arrangementsudvalget i DKUUG

Haiku R1 Alpha 2

Posted on by flywheel

Efter et godt stykke tid er Haiku R1 Alpha 2 nu kommet på gaden. Haiku er en genimplementation af det mytiske BeOS styresystem.

This is a glimpse into some of the more notable improvements and additions to Haiku, since the previous release, R1 Alpha 1. It should be noted that countless bugs have been fixed.

Lidt fra changelog (Så tager vi resten på engelsk og jeg kravler tilbage i sygesengen):

New Features

This is a glimpse into some of the more notable improvements and additions to Haiku, since the previous release, R1 Alpha 1. It should be noted that countless bugs have been fixed.

  • Haiku includes a new web browser, WebPositive, which is powered by WebKit. It is not yet a mature web browser.
  • WiFi via FreeBSD 8 compatibility. Non-distributable firmwares can be installed via install-wifi-firmwares.sh. A temporary & experimental application setwep can allow WEP based encryption.
  • Message Signaled Interrupts (MSI) have been implemented. This helps to alleviate the lack of proper IRQ routing.
  • Fixed a network bug that could result in web pages being loaded only partially.
  • When partitioning a disk, DriveSetup will now install a basic boot loader into the Master Boot Record which boots the active partition.
  • Locale kit for providing internationalization in programs.
  • Translations for User Guide and other system provided documentation.
  • Many lock contentions have been improved, leading to significantly better compilation times.
  • Numerous code refactoring to kernel/VM subsystems.
  • Font hinting in FreeType.
  • Various vendor software has been updated, most notably bash from 2.x to 4.x.
  • Introduced installoptionalpackage, a rudimentary script to alleviate the lack of a proper package management solution via PackageFS. It allows the installation of some of Haiku’s OptionalPackages.
  • Vastly improved USB mass storage performance through a better page mapping strategy.
  • ACPI is now enabled by default.
  • HDA on nvidia chipset improvements.
  • The UDF file system module has been fixed.
  • Various POSIX compliance fixes.
  • API/ABI Changes
  • BJoystick — fixed a BeOS compatibility issue
  • GCC 4 ABI changes that require applications to be recompiled
  • Introduced library versioning
  • Haiku GCC4 can now be compiled directly on a 64bit Linux distro. GCC2 still requires the use of linux32.
  • Created a new file image type, ‘anyboot’, which allows a Haiku image to be burned as an ISO or written directly to USB. To note, some burning software may try to be ‘clever’ and will incorrectly burn.
  • Beefed-up Internet hosting infrastructure, thanks to our much-appreciated donors.

Missing Features

  • Haiku does not yet support WPA encryption for wireless networking, only WEP encryption is supported.
  • There is no package management yet.
  • The Haiku boot manager (bootman) supports a single hard disk drive only.
  •  USB keyboards attached to OHCI or to USB 2.0 hubs do not work in Kernel Debugging Land (KDL). They need to be connected to UHCI root ports to work in KDL. Also note that when entering the kernel debugger by means of a panic it is possible that the keyboard does not work. To work around this issue you can manually enter the kernel debugger once and leave it again to enable the USB keyboard.
  • Font overlay is not yet implemented in Haiku. As a result, if at the beginning of the installation you choose a language that uses glyphs not supported by the default font (such is the case for Japanese, for instance), the localized text on the screen will become

 

openSUSE 11.3 Milestone 6

Posted on by flywheel

Med milepæl nummer seks (M6) begynder det at ligne noget. M6 er den første revision siden feature-freeze, dermed har openSUSE 11.3 bevæget sig ind i beta-test. Nu drejer det sig ikke om at tilføre eller fjerne funktionalitet, men at få den eksisterende funktionalitet til at fungere stabilt. Siden M5 er 162 fejl blevet rettet.

Af regulær dovenskab få i resten på god gammeldags udenlandsk:

General & Hardware-related

  • radeon video driver has superseded radeonhd, providing KMS/DRI support. (Bug #574749, Bug #590248, Bug #595653, Bug #598123)
  • using the radeon video driver on an Atom-based system no longer causes graphical corruption. (Bug #589022, kernel commit message)
  • Added xorg.conf.d snippets so you can easily override defaults if your monitor has not been detected via DDC. (Bug #598125)
  • cups 1.4.2 now works properly on 64-bit systems. (Bug #575544)
  • Suspend works again.(Bug #586953, Bug #587779)
  • a buffer overflow issue in lockdev has been resolved. (Bug #588325)
  • a kernel-bootsplash bug issue causing corrupted terminal editing has been resolved. (Bug #594209)
  • a dependency issue with yum and createrepo has been resolved, allowing Live images to be built from Factory again. (Bug #588628)
  • libsane had some dependency issues resolved. (Bug #592143)
  • sane-backends, cups-backends, and yast-scanner no longer depend on hal (deprecated). (Bug #590707, Bug #593946).
  • libvdpau, the vendor-neutral component of vdpau is now packaged separately from the Nvidia vdpau component. (Bug #596481)
  • Thinkpad scroll wheel emulation has been repaired. (Bug #597214)

Installation

  • X11 server properly handles language preference specified in grub. (Bug #591048)
  • nm-applet.conf was moved to the NetworkManager package, instead of being in each NetworkManager frontend package. (Bug #476502)
  • NTP can now be configured during setup. (Bug #537859)
  • “Boot From Hard Disk” option on the DVD boot menu has been repaired. (Bug #597167)
  • perl-bootloader hdd detection has been altered to match the behavior of libstorage, resolving issues with incorrect grub configuration when installing to a drive other than the first detected (hd0,1). (Bug #597774)
  • sax2-tools has been added back to the LiveCD images resolving a YaST dependency issue in installation stage 2. (Bug #585432)
  • open-vm-tools are installed on LiveCDs to enable VMWare drivers. (Bug #591085)
  • Typos in start-ttys.conf (from upstart) were fixed. (Bug #591705)
  • LanguageTool is now included in patterns-openSUSE-office_opt, therefore installed by default. (Bug #592752)
  • YaST sw_single will now switch to the installation summary when resolving a conflict. (Bug #596519)
  • mkinitrd was patched to resolve an issue with SELinux. (Bug #598075)

Security & Administration

  • SSH login with a key is now prevented by pam_nologin when /etc/nologin is present. (Bug #530885)
  • SELinux packages are available and working, although there is currently no config for openSUSE. (Bug #581505)
  • serviceRefresh in yast2-pkg-bindings reloads the repos list and refreshes cache after a service change. (Bug #581766)
  • upgrade to syslog-ng 3.1.1. (Bug #590348)
  • upgrade to openSSL 1.0.0. (Bug #592955)
  • yast2-printer now checks if a CUPS server is accessible. (Bug #595612)

Development

  • A gcc segfault condition was identified and reported upstream. (Bug #593923, gcc bug report)

Gnome Desktop

  • reverted back to at-spi due to issues with at-spi2 preventing a usable accesibility stack. (Bug #595197)
  • gnome-desktop-sharp2 has been updated to reference Gnome 2.30 on openSUSE 11.3; this resolves an issue with gnome-do not reading .desktop files. ([Bug #584612, commit message)
  • a dbus issue with couchdb was resolved; this was causing gwibber to crash. (Bug #592720)
  • pulseaudio had some dependency issues resolved. (Bug #592155)

KDE Desktop

  • A crasher in System Monitor triggered by killing a process has been reported upstream. (Bug #597156)
  • xrdb configuration was changed to resolve some application crashes due to undefined color names. (Bug #598020)
  • powerdevil/kidletime no longer consumes excessive CPU cycles on idle. (Bug #584919)
  • KSystemLog now has proper paths to logs by default. (Bug #567615)
  • Sysinfo Display shows version information about the proprietary Nvidia video driver, if installed. (Bug #570200)
  • Smb4K starts properly. (Bug #593664)
  • Amarok informs users when they attempt to playback an unsupported format, and suggests a codec download. (Bug #537875)
  • Amarok can fetch cover art (again). (Bug #539978)

LXDE Desktop

  • vte was patched to resolve a segfault in lxterm when using a transparent background. (Bug #594590)
  • Files and folders can be selected in PCManFM. (Bug #593094)
  • xdg-open has been patched to successfully find a browser in more cases. (Bug #591714)

Multimedia

  • rpmlint no longer treats rosegarden files as scripts. (Bug #574650)

—–

The following annoyances have already been reported (M6):

  • gconf2-branding-openSUSE isn’t installed by default, which causes no default settings (e.g. Sonar theme isn’t used by default, two panels instead one-panel arrangement, etc…). Workaround: install gconf2-branding-openSUSE package.
  • nouveau video driver for Nvidia hardware has some issues detecting monitors via DDC. Bug #596740 – workaround: use nomodeset and configure monitor manually.
  • KDE System Monitor crashes when killing a process Bug #597156
  • A number of issues have been encountered using KMS with Intel/nouveau/radeon drivers and specific hardware configurations. Workaround: use nomodeset boot flag to disable KMS.

—–

For dem der vil være med i arbejdet med at finde fejl, der kan luges ud af udviklerne – eller bare er nysgerrige :


Henvisninger :

(Kilde : news.opensuse.org)

Qt Mobility 1.0.0 på gaden

Posted on by flywheel

Nokia har “endelig” frigivet deres mobile udgave af deres Qt-framework – hermed menes den Qt-version der er tiltænkt at dække koldens mobile enheder (MeeGo, Symbian, iPhoneOS, AndroidOS,hvad man ellers kan hitte på).

Som en halv liter malurt i bægeret skaldet lige siges at denne version kun understøtter firmware version PR 1.2 for Maemo-enheder – der skulle være nogenlunde lige på trapperne. Hvis du har en SymbianOS enhed så skal den også lige patches – disse skulle også være lige på trapperne.

Ligesom sin storebror er Qt-mobility tilgængelig under både lukket og frie licenser.
På trods af at det kaldes version 1.0.0 er der et af de ti nye API’er der stadig er mærket beta.

Final :

  • Service Framework
  • Bearer Management
  • Messaging
  • Contacts
  • Versit
  • Publish and Subscribe
  • Location
  • System Information
  • Sensors

Beta, men tæt på final :

  • Multimedia

Qt-mobility og SDK kan hentes via nedenstående henvisninger :

(Kilde : Qt-Labs)

MeeGo preview fremvist

Posted on by flywheel

Intel har på deres Youtube-kanal, offentliggjort en video af en Acer Aspire One der blev fremvist på IDF 2010. Det specielle er at den kører et preview af MeeGo Linux distributionen, med det Qt-baserede grafiske miljø der er ved at blive udviklet på Intel-siden. Det er næppe den store overraskelse at miljøet til forveksling ligner det eksisterende Moblin miljø.

Som endnu en lækkerbidsken ses en anden video, hvor der blandt andet fremvises MeeGo på en AAVA Moorestown baseret smartphone og et TV.

Henvisninger:

(Kilde : engadget)