Jornal Semanal Gentoo: 18 de Agosto de 2003Gentoo migra para infraestrutura de DNS mais robusta Recentemente, a Gentoo Technologies trocou seus servidores DNS domésticos pelo uso de serviço de DNS terceirizado, powered by UltraDNS. Esta nova relação de terceirização oferece ao Gentoo uma infraestrutura de DNS mais confiável e escalável, e nos permite passar mais tempo desenvolvendo o Gentoo Linux e menos tempo administrando os servidores da infraestrutura. Além disso, a UltraDNS oferece várias novas possibilidades e capacidades antes inexistentes em nosso ambiente BIND de servidor de nomes. Estas possibilidades incluem SiteBacker e DirectionalDNS. O Gentoo atualmente está usando SiteBacker para garantir que usuários sempre consigam acessar www.gentoo.org, que atualmente engloba quatro servidores. Quando um servidor sai do ar, para manutenção por exemplo, o SiteBacker automaticamente redireciona os pedidos de clientes para um dos outros três servidores, minimizando as interrupções para nossos usuários. O Gentoo atualmente está experimentando o DirectionalDNS como uma forma de oferecer respostas direcionadas a requisições DNS por rsync.gentoo.org. Baseado no sucesso deste teste, procuraremos expandir o uso de DirectionalDNS a outros domínios também. Os servidores UltraDNS atualmente respondem a quase 5 milhões de requisições DNS por mês relacionados ao Gentoo, e se userviço e suporte têm sido excepcionais até o momento. Gostaríamos de aproveitar esta oportunidade para agradecer à UltraDNS por seu suporte ao projeto Gentoo Linux.
O desenvolvedor do Gentoo Linux Kevyn Shortell colocou mais fotos da Linux World Expo 2003 aqui neste sítio, e também nos informou que a equipe PPC tinha um PowerMac G4, um iBook e um Total Impact Briq, e não um iBook e um PowerMac G3 como falamos no Jornal da semana passada. No momento em que este texto foi escrito, Kevyn ainda não tinha posto pré-visualizações ou miniaturas das fotos, e a página tem 11MB incluindo imagens, então navegue até lá por sua própria conta e risco. :-) Obrigado ao Kevyn por colocar no ar as fotos e apontar o engano. Citado a partir do aviso: "A implementação de cache de rota no Linux 2.4 e o módulo IP conntrack do Netfilter permitem que atacantes remotos causem uma negação de serviço (consumo de CPU), por pacotes com endereço de origem adulterados que causam um grande número de colisões de tabelas hash" "A chamada de sistema ioperm no kernel 2.4.20 e anteriores não restringe privilégios corretamente, o que permite que usuários locais ganhem acesso a leitura e escrita a certas portas E/S" "Uma race condition na forma como os ponteiros env_start e env_end são inicializados na chamada de sistema execve e usados em fs/proc/base.c no Linux 2.4 permitem que usuários locais causem uma negação de serviço (travamento)."
"A (1) biblioteca semi MIME 1.14.5 e anteriores, e (2) wemi 1.14.0 e possivelmente outras versões, permitem que usuários locais sobrescrevam arquivos arbitrários através de um ataque de link simbólico a arquivos temporários."
Novos Relatos de Falhas de Segurança As seguintes novas falhas de segurança foram reportadas esta semana:
Histórias de Usuários não será publicade esta semana. Lembre-se de nos enviar a sua história bizarra, hilária, ou incrível do Gentoo para que possa ser publicada aqui! 4. Featured Developer of the Week Nick Hadaway
This week, we are featuring Nick Hadaway (raker), a very active and prolific developer. Nick started working on Gentoo in early 2001, initially taking responsibility for maintaining most of the packages in /net-mail, and a few other packages. He has now expanded that role into work with /media-*, /net-ftp, Windowmaker and LDAP packages. Apart from the usual dev duties of maintaining ebuilds, Nick contributes C and C++ code patches and testing. He perceives his primary role as dealing with bugs by "listening to what users want and mak[ing] their wish a reality", if he can. Some years ago, Nick began working on his own Linux source-based distro (Give Me Some Linux). His idea will sound familiar: using shell-scripts and higher-level languages to automate package installation from source. Upon discovering Gentoo, Nick abandoned the increasingly complex task of maintaining his distro, because "Gentoo filled [his] every desire", and because of his delight in its distinction from Red Hat. He promptly made a point to begin contributing to the Gentoo project. Over the past two years, Nick has earned the respect of his peers as an effective and able contributer. Nick works as a computer consultant in Chicago, and occasionally moonlights as a manager/jack-of-all-trades for his mother's restaurant near Milwaukee. He has an additional night job as a rock musician in Madison, WI. He currently is in the process of maintaining or establishing residences in all three cities. He studied Electrical Engineering and Music Performance at the University of Wisconsin - Madison and has taken Computer Science courses at the University of Wisconsin - Milwaukee. When not patching bugs or dealing with pizza (insert obligatory Hiro Protagonist reference here), he is usually creating music. He plays trumpet, bass and drums - even contributing vocals. He enjoys hard-core and "real techno" and was active in the rave scene when it was a little more current. He enjoys clubs and parties and will often travel a fair distance to attend a significant one. Nick uses an aging PII-450 at home, and a variety of boxen in other places. The first app he launches is the appropriately retro "xterm -bg black -fg green". He uses Windowmaker as his WM, and Pine or SquirrelMail for mail. He concluded our interview by reminding us that "Gentoo is ... FNORD!". Gentoo Forums Now With Italian User Interface Forum moderatrice Brandy announced on Thursday that Italian has been added as an interface language for the Gentoo Forums. Besides English and now Italian, available board languages include Dutch, French, German, Norwegian, Portuguese, Spanish and Swedish. Users who wish to see the menu texts in their native language can switch the default in their profile. Yet Another Portage Debate There were times when the Forums went weeks without someone asking why Portage isn't rewritten in C++, but this week was clearly not one of them. Check this thread for an assessment of this and other proposed variations to Gentoo's package management technology: Xvnc Terminal Server Installation Guide, Diskless Gentoo Installation On occasion, tutorials about things that are not yet covered by the general documentation are being donated by Forum users. This week lines explains the procedure for setting up a VNC server that automatically spawns sessions when someone is connecting to it, a clever way to prevent having to start a new VNC server for each user. Contributions like that can lead to more than just 15 minutes of fame: Another installation guide posted by Swiss.Mage back in June, this one talking about a diskless Gentoo installation, must have been so convincing that it ascended to be a chapter of the official Alternative Install Guide last week:
Canada: Adelie Linux - Gentoo Single System Image Project A little sidelined by other news surrounding Gentoo's Linuxworld Expo (LWE) involvement two weeks ago, the Gentoo Cluster Project certainly deserves more attention. After all, the remote cluster system that showed graphics rendering with a parallel version of POVRAY at the booth in San Francisco was proof for an exceptionally well done collaboration between academics, corporate backers and Gentoo developers: The driving force behind it all is an initiative known as Adelie Linux, part of the University of Montreal's Center for Research on Computation and its Applications (CERCA), an institute specializing in parallel and distributed multi-processor systems. When CERCA's High Performance Computing Group needed an environment for their own Beowulf systems, they chose Gentoo Linux "because is a young, innovative, and very well designed distribution that give their users a great deal of flexibility, a clear upgrade path and a very high level of hardware optimization, which makes it especially attractive for all kind of high performance applications". A local IT-solutions firm, Cyberlogic, joined CERCA in conducting the Single System Image project that is now fully operational, running on the university's own and an external industrial Beowulf. According to Cyberlogic, the Adelie/SSI cluster management system allows for a centralization of all operations on the server, providing a single point of control for the whole distributed environment, offering a performance increase of up to 30%, easier administration and expansion, fast bootup and enhanced robustness. Cyberlogic's complete cluster solutions, based on Gentoo and Adelie, are available with processors ranging from Xeon and Pentium 4 to Athlon MP/XP, and - thanks to Olivier Cr?te's AMD 64 port of Gentoo - even Opteron CPUs. Germany: Interview with Gentoo PPC Lead Developer Pieter van den Abeele The German online Linux magazine PPCNUX (obviously focussing on Linux for the Macintosh platform) has conducted an interview with Pieter van den Abeele, lead developer for Gentoo PPC. Pieter describes his involvement in producing a Gentoo LiveCD aiming for bootability on every single Macintosh out there, and has a lot to say about how Gentoo differentiates from other Linuces for the PowerPC, about the MetaPkg project porting Portage to Mac OS X and other aspects of Gentoo Linux development for the most popular non-x86 platform. Difficult to overlook is also his call for help: developers who would like to offer time, expertise and possibly hardware to expand Gentoo PPC to hardware from Eyetech (AmigaOne), Genesi (PegasosPPC), IBM (RS/6000) and oldworld Macintoshs should contact him right away. No need to be afraid to click on the link to the magazine if you don't speak German, by the way: They decided to publish the interview in English. Os seguintes pacotes estáveis foram atualizados ou adicionados nas duas últimas semanas: Total categories: 96 (1 category added in the last week) Total packages: 6295 (311 packages added in the last week) The Gentoo community uses Bugzilla (bugs.gentoo.org) to record and track bugs, notifications, suggestions and other interactions with the development team. Between 08 August 2003 and 14 August 2003, activity on the site has resulted in:
Of the 3605 currently open bugs: 94 are labeled 'blocker', 156 are labeled 'critical', and 287 are labeled 'major'. The developers and teams who have closed the most bugs during this period are:
The developers and teams who have been assigned the most new bugs during this period are:
Creating ScreenShots with import This week's tip shows you how to take screenshots of your desktop or individual windows using the import command. import is provided by ImageMagick so you'll need to install it from portage.
Now that ImageMagick is installed, you can use it to take screenshots of either your entire desktop, parts of it, or just individual windows. First, let's look at taking a screenshot of your entire desktop and saving it as the file desktop.png.
Next we'll look at taking a screenshot of just one window. To do this, use the import command and click on the window you want to capture.
This should get you started but there are many other things you can do with import and ImageMagick. To see a list of the many options that can be passed to import, see the man page (man 1 import). 10. Citação/Assinatura da Semana A Citação/Assinatura da Semana não será publicada nessa edição. Se você ver uma assinatura interessante ou uma citação nos forums web, listas de e-mail, IRC, ou em uma conversa com um amigo Gentooista, nos avise no gwn-feedback@gentoo.org. The following developers recently left the Gentoo team:
The following developers recently joined the Gentoo Linux team:
The following developers recently changed roles within the Gentoo Linux project.
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