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Comment: Re:Gnome3 (Score 1) 171

by Peter H.S. (#43846043) Attached to: Fedora 19 Beta Released: Alive, Dead, or Neither?

And how do I do that when, for example, configuring a non-running system from a different system? Like, for instance, setting up embedded systems?

You don't _need_ the *ctl tools to configure a systemd system. Just use "ed -G" (or "vi" if you need some hand holding wysiwyg GUI) to edit the text configuration files. This is no different from sysvinit.

systemd and journald support live remote logging and what not, and if they doesn't all ready support reading of offline log files, they surely will. (not something I have looked at, but perhaps "systemd-journal-remote" is what you need).

The reliance on *ctl apps that have to actually run on the system is a big step back, towards Windows and how you can't really do much about the registry or event logs without a running and compatible Windows system, and for many things THE system it runs on.
This is the direction systemd/journald is taking us, and we've seen this before, with AIX. It didn't impress us then, and it doesn't now.
Those who don't know (Unix) history are doomed to repeat it.

Having to rely on systemctl is no different than to rely on eg. Bash, vi and all the nice GNU tools, without those, not much can be done.

I see no real world problem in either using the tools on the running system by using eg. ssh, or having a systemd compatible system to analyse log files on a remote system (either offline or live remote logging). In fact, I don't think this is any different from using sysvinit/rsyslog today, except that systemd offers better tools for analysing problems and much better security etc.

Comment: Re:Gnome3 (Score 2) 171

by Peter H.S. (#43845371) Attached to: Fedora 19 Beta Released: Alive, Dead, or Neither?

They didn't help me when systemd crashed and took with it the entire system. It's built as a card house, with assumptions that things don't go pear shaped, or if they do, you have time to wade through hundreds of configurations in search of the proverbial needle in a haystack.
I don't LIKE systems where you put all your eggs in one basket, and for good reason.

This is no different from a failed init that causes a kernel panic. The difference is that systemd now is thoroughly tested on *thousand of machines and keeps improving, so using it to control services will minimize all the dangers that comes from hand editing complicated, often undocumented init scripts.

systemd has superior debugging facilities and is well documented. You can actually systematically analyse what a certain run-level (called target) requires, or tell systemd to spawn a shell if it crashes. It is so much better when it comes to tracking down service/daemon troubles than static scripts.

Sure, there is something to learn about systemd before mastering it, and many people seems to loathe reading about new technology, or just doesn't have much time on their hands to learn new stuff. But neither is a systemd problem, and learning new technology and new ways of doing things, comes with the territory as SA.

Check out all the wonderful stuff one can do with systemd, journald, and all the *ctl tools; completely consistent control and behaviour across every Linux system that uses systemd. No need to learn and relearn dozens of small system peculiarities across distributions for controlling services, working with log-files, getting system info, etc. etc.

systemd is the future because it is such a good idea that most major distributions are switching to it. I will recommend all Linux SA's to put their real or imagined reservations against systemd aside, and start boning up on the subject

There is a lot to learn, not because systemd is complicated, but because it can do so many things, like resource limiting, mounting etc.

Here is a link that compares sysvinit, Upstart and systemd
http://0pointer.de/blog/projects/why.html

Come on, "On-demand socket activation for per-connection service instances" for virtual servers, how cool is that!

Comment: Re:Gnome3 (Score 3, Informative) 171

by Peter H.S. (#43843601) Attached to: Fedora 19 Beta Released: Alive, Dead, or Neither?

And what do you do when something goes wrong? Or you need access from a different arbitrary system?

That sort of questions is exactly why you should read the linked pages. So calm your fuming hate against Poettering and start reading.

I guess your very vague question is something about accessing Journal log files, something you probably think can be problematic since they are binary, right? No worries mate. Syslog is a first class Journal client, you can read all the usual text file stuff in /var/log/* if for some reason journalctl doesn't work, but everything else does. Journal send all messages to syslog, including early boot stuff that syslog couldn't log before.

It is just that when journalctl (and all the other cool *ctl tools) works, it is faster, easier and more secure than the usual chaotic syslog logging. So what is wrong with displaying not only an error message, but also the exact link where the error message is explained and documented? "journalctl -f" instead of "cat /var/log/messages | tail" ?
Cryptographic secure logging? That you have an actual guarantee that a message is written by the daemon it claims?

"journalctl", "systemctl" and all the other *ctl tools like localectl, hostnamectl and loginctl, are just wonderful and powerful tools, that promises some kind of consistency when it comes to Linux logging and system information gathering etc.

Comment: Re:Gnome3 (Score 5, Informative) 171

by Peter H.S. (#43843023) Attached to: Fedora 19 Beta Released: Alive, Dead, or Neither?

I think its just cranky old sysadmins that don't like systemd. Its actually quite good and offers several benefits over the old sysvinit.

It's the cranky old sysadmins who keep the servers and internet running. What they say is often important. When someone tries to re-invent Windows Services, AIX smit and Windows Event log, they may grump, but they do so with the experience saying that it wasn't a good idea the last time either.

The problem is that many aren't "cranky old SA's" but just uninformed old gits that refuses to even read up on new technology and flat out denies that there any problems whatsoever with Linux logfiles, and the way Linux handles services (init etc).

Whenever I see systemd or Journal hate here on Slashdot, it is always just snarky remarks that almost always are totally wrong, and clearly demonstrate that they don't know what they are talking about.

Even if you never, ever use the Journal tools or access the Journal log files, systemd and Journal will enhance the Syslog files considerably, by enabling log info early in the boot process, and tagging and aggregate the logfiles.

IMHO, systemd and Journal is the best new tools for the Linux SA made in the past decade.

I really recommend reading this list of systemd myths:

http://0pointer.de/blog/projects/the-biggest-myths.html

And Lennart's "systemd for Administrators". Here is a link to the first part of twenty instalments:
http://0pointer.de/blog/projects/systemd-for-admins-1.html

Very good stuff. A must read for any Linux SA, whether they think they dislike systemd or not.

Comment: Re:Need a control. (Score 4, Interesting) 327

They placed the AP's so that the heat they generated wouldn't affect the garden cress. Room temperature was computer monitored and regulated, the humidity was regulated, and they photographed the batches to document that no drying up or rot was present. They mixed the seed batches, randomized the seed selection etc etc.

The experimental setup and their elimination of errors and bias is considered to of very high quality, which is why they won a junior science prize. Their actual result meant nothing in that regard.

The first experiment was with idle AP's only broadcasting ESSID. The second experiment added some Linux laptops that ping-flooded to generate lots of network activity. The second experiment showed a clear increase in plant "damage" /lack of development.

Comment: Re:"Doing something no other distro vendor has don (Score 3, Informative) 25

by Peter H.S. (#43457629) Attached to: Red Hat Launching Its Own Community Distro of OpenStack

Red Hat is doing something no other distro vendor has done

... Gentoo? And Daniel Robbins' Funtoo project?

These two distros are very similar, with a few key differences but in both you can choose how stable or not stable you would like. If you want stable, you can have stable. If you need bleeding edge, you can have bleeding edge.

Granted its not "automatic updates" but I don't like the idea of my server doing updates like that without me initiating them.

The point is that RDO isn't a new distro, or a specific RH flavour of OpenStack, but just plain vanilla OpenStack builds, nicely packed in RPM's and with a "yum" repository. So RH based distros like Fedora 18, CentOS, Scientific Linux can install and maintain it, just by enabling the RDO yum repo.

There is a quickstart guide and lots of documentation here:
http://openstack.redhat.com/Quickstart

All in all, this makes it really easy to test and play around with OpenStack.

Comment: Re:Great, but what does it *DO*? (Score 1) 327

by Peter H.S. (#43074069) Attached to: Apple's iWatch Could Come With IOS, Earn $6 Billion a Year

I haven't seen a prototype, but a really hot technology that would fit perfectly with a watch device is two factor authentication (2FA) with one time passwords (OTP), combined with NFC, and probably some biometric stuff too.
Use it to lock or unlock your phone, tablet, pc, to encrypt your devices, and really good password management and internet authentication and secure connections. Could be used to boost credit card and on-line banking security significantly. It wouldn't matter any more if a hacker stole your password from either your pc or from a web service break in; they can't abuse the password without the iWatch too.

Look at Ubikey for a 2FA, OTP, NFC usb device:
http://www.yubico.com/products/yubikey-hardware/yubikey/

Could be integrated with your car or house lock system too, or your house lighting system.

Since it could work as a broadcasting tracking device, high end boutiques could use it to dispatch grovelling salespersons directly at the iWatch wearer when they entered the premises:-)

Comment: Terrible clever idea or just terrible? (Score 4, Interesting) 354

I really don't have the technical knowledge to praise or damn the idea, but as I understand it, there are some clever moves in this;

It appears that they rip out enough of Android that they can use the Android graphic drivers for Mir, so that every device with android drivers delivers "free" drivers for Mir too. That would give them a huge advantage in the Smartphone and Tablet arena.

QtMir, QtUbuntu, Qt/QML; it looks like Ubuntu dumps Gnome/GTK in favour of Qt5 for core OS (GUI) development. As I see it they will clone KDE/Qt, substituting the KDE parts with QtUbuntu.

Their time line seems very optimistic though.

Comment: Re:Security by obscurity ... (Score 1) 349

by Peter H.S. (#42924021) Attached to: SSH Password Gropers Are Now Trying High Ports

Denying root access

I'm also hoping to start using a Yubikey for password authentication, just waiting for my hardware token to arrive in the mail.

"Yubikey" looks very interesting. I have been thinking about two-factor and OTP hardware to increase my security, but I wasn't aware of actual implementations that worked for Linux.

Comment: Re:how red hat hires (Score 4, Informative) 113

by Peter H.S. (#42830599) Attached to: How Red Hat Hires

"Come on, who doesn't want individual audio level settings for each program?"

Me. WTF do I need that for? My system sounds just fine, always has although audio is rarely used. Mostly just in connection with multimedia apps, and the login screen.

The point is that PA allows unobtrusive audio clues, like a gentle "ding ding" 10 minutes before an appointment, even though you are listening to fairly loud music. I like the fact the sound levels in VLC and Amarok is different from the rest of the system.
Before PA there wasn't a functional sound daemon, so everybody just turned off any sound notifications and manually set the sound level to zero to avoid a sudden blast of noise when accidental starting a web commercial, or when "System Bell" gave a extremely loud warning "DING!" just because you had been listening to load music earlier that day.

Not talking about the problems with running sound i Dosbox, or using two apps with sound at the same time, bluetooth sound, etc. PA solved all those problems, it just works and makes life easier for developers, distro makers and end users, which is the reason why all major Linux distributions have converted to it.
People trash talk PA, but it just that, trash talk, without technical argumentation, without any alternative to the many features that PA gives, and without regard to the fact that PA works well in the real world.

That's it.

ALSA did everything I needed for years, and ESD/OSS before that. As a user I really don't give a rat's ass how the code looks behind it all, as long as it works, which it did.

As far as SysVinit, same idea - it worked, and worked very well for decades. I still have no use for fast booting since I rarely if ever reboot. And I fail to see what other use there is for tinkering with something that worked just fine - I liked the old scripts since they were very self-documenting and easily modifiable.

So, no. Keep it.

SystemD goes way, way beyond the wish of faster booting. It really is a Sysadmins dream come true when it comes to controlling the many services (not just daemons) that runs on modern Linux systems. "systemctl" is just a natural, UNIX like way of controlling all these services from the command line or in scripting. "init/Sys V" was perhaps a fitting system for the needs of Unix boxes in the 1980's, but modern day servers and desktop systems have other needs, and init scripts are complicated, messy and fragile to edit. SystemD is just so coherent and natural to use, and allows far superior ways of maintaining, configuring, and monitoring systems.

I think your main problem is, that make your own way of using your system, a baseline for everybody else. You may not use sound very much, but many people actually do, you probably don't use bluetooth sound on your system, but many Linux devices, like smartphones do, you may not have the need to tweak init scripts, or administrating or monitoring services on a server, but other people do.

Comment: Re:how red hat hires (Score 1) 113

by Peter H.S. (#42828271) Attached to: How Red Hat Hires

pulseaudio sucks donkey balls. It plain works unless it doesn't, in which case you're fucked. Fortunately plain ALSA works as good as ever and since I first encountered pulseaudio I've kept it off my systems and I haven't had any problems.

I was an early adopter of PulseAudio since I used Fedora Core. Yes I had problems in the beginning, but only because I used my uncommon internal audio chip. When I used an old, but common and well supported SB 16 card, my problems went away. Really, if you still have problems with PulseAudio, it is because your distro or the audio chip drivers sucks.

Not only does PulseAudio works, it provides features and benefits that ALSA/ OSS /ESD /ArtsD doesn't have. PulseAudio is an elegant solution to the many problems Linux used to have with its audio system. Come on, who doesn't want individual audio level settings for each program?

Comment: Re:how red hat hires (Score 3, Insightful) 113

by Peter H.S. (#42827445) Attached to: How Red Hat Hires

I'm just wondering why you think Red Hat wants to kill open source?

Two words. Lennart Poettering.

See also systemd and pulseaudio. Or better yet, ask Linus himself.

I think Lennart Poettering's work on PulseAudio and Systemd is superb. PulsAudio just plain works; sound has never been so easy and flexible in Linux.
Sys V /init can't die fast enough in my opinion. Fedora, Ubuntu, OpenSuse, Arch Linux and many lesser distroes, have all ditched it in favour of modern solutions.

Claiming that Red Hat want to kill Open Source is just plain pathetic. RH is _THE_ major contributor to Linux, both with their own projects and up stream contributions. They have always been unwavering staunch in their belief and support of Open Source.

Science

+ - Nanoscale Device Makes Light Travel Infinitely Fast->

Submitted by sciencehabit
sciencehabit writes "Physicists have developed a tiny device in which the index of refraction for visible light is zero—so that within it, visible light travels infinitely fast. The gizmo won't lead to instantaneous communication—the famous speed limit of Albert Einstein's theory of relativity remains in force—but it could have a variety of pretty cool uses, including serving as an element in a type of optical circuitry."
Link to Original Source

Comment: Just a nutcase blogger with a grudge? (Score 1) 130

by Peter H.S. (#41617789) Attached to: Pressure Rises On German Science Minister In Plagiarism Scandal

I have yet to see even one example of plagiarism among the 92 examples given. The blogger seems unable to understand that it is common academic praxis to sum up e.g. a theory from a work. Of course such a summery will bear some resemblance to the original work, otherwise it wouldn't be a summery. But as long as there are good footnotes documenting this, it isn't a problem.

One could in fact argue, that since the blogger doesn't seem to have found even one good clear case of plagiarism, the dissertation comes out strengthened.

Given its constituency, the only thing I expect to be "open" about [the Open Software Foundation] is its mouth. -- John Gilmore

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