Re: [CentOS] OpenJDK vs Sun JDK
> RedHat has acknowleged that Sun's JDK is faster - despite the fact > OpenJDK is native. Since it's native, it also means it's not platform > independent (in the sense of compile once run anywhere.) What do you mean "is native" ? The JDK (or rather the JVM) is native on all OS, since it is the layer which makes the Java compiled bytecode portable. OpenJDK could even be seen as more portable since the IcedTea build harness allows to port it to more platforms via the Zero JIT (there is a significant amount of processor-dependent assembler code in the JVM) I'm using OpenJDK on my servers and desktops under CentOS/Fedora for years, and my customers run the Java binaries on Windows without problem. I have no idea about speed difference, but I would be a bit surprised if it would be very big. My understanding is that the (native) Hotspot JVM is basically the same for both products and that the differences are about some java libraries. That would be interesting if you could send a reference to this Fedora thread. More generally OpenJDK is not a separate independent project (like Blackdown used to be, or Apache Harmony still is), this is just the Sun JVM codebase, with compatible licenses (some patches are then applied by the IcedTea build harness when building the binaries from OpenJDK sources). ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Building an "instant on" X terminal
On Thu, Apr 15, 2010 at 1:54 AM, Stephen Harris wrote: >> If you aren't adverse to Ubuntu, 10.04 LTS (beta right now but final by >> the end of the month) boots in 10 seconds from a hard drive. I've tried >> it: It was impressively fast. > Will it run in 256Mb RAM and on 512Mb of disk? 'Cos that's all this > machine has :-) I did a quick and dirty test setup yesterday and was quite impressed. One of the tests was running a VMWare with 128MB and a tiny empty disk. The VM booted off the LTSP binaries merrily and was up and running within seconds. The server was a VM on my file server with 768MB RAM and the client was a VM on my linux laptop so everything did go through the network cable in the end. I've also tried an ancient 700MHz Pentium 3 laptop with 256MB RAM and that was way faster than the local Linux installation on the box so I think this setup is going to stay and will be in use instead of the local OS. -- Hakan (m1fcj) - http://www.hititgunesi.org ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Building an "instant on" X terminal
On Thu, Apr 15, 2010 at 1:26 AM, Benjamin Franz wrote: > If you aren't adverse to Ubuntu, 10.04 LTS (beta right now but final by > the end of the month) boots in 10 seconds from a hard drive. I've tried > it: It was impressively fast. I was curious about this and installed one of these on an amd64 VM with a standard LTSP installation and my ancient 700MHz i386 laptop was running of it within an hour and pretty fast as well. Even sound worked fine and stuff like youtube were tolerable. The performance and experience was way better than the old thin-client terminals of the same age with a cut-down Linux on the on-board CF-Card. The whole thing took 13GB on disk and 768MB of RAM to support two clients. Trying the CentOS one is probably the next step. -- Hakan (m1fcj) - http://www.hititgunesi.org ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] burning an image
On 04/16/2010 04:59 AM, david walcroft wrote: ... > I tried your command but this error came up > > [da...@reddwarf ~]$ growisofs -dvd-compat -Z > /dev/dvd=rpm/CentOS-5.4-x86_64-bin-DVD.iso > :-( /dev/dvd: media is not recognized as recordable DVD: 0 What does this command say? dvd+rw-mediainfo /dev/dvd Mogens -- Mogens Kjaer, Carlsberg A/S, Computer Department Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark Phone: +45 33 27 53 25, Mobile: +45 22 12 53 25 Email: m...@crc.dk Homepage: http://www.crc.dk ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] memory leak observed with valgrind on CentOS release 5.4 (Final)
Hi All, Not sure exactly a memory leak or not. I was porting my nagios from Redhat 7.3 to CentOS 5.4 and I observed the memory usage was gradually increasing on the new centos box. When I ran all my perl plugins with Valgrind -3.2.1, all the plugins complained about a memory leak. Not sure if it's a leak or if its fault with valgrind way of evaluating things. I have attached valgrind output when i ran a simple hello-world.pl on my centos box. I shall greatly appreciate if anyone have faced similar behaviour. Thanks, Jai Prakash perl-leak.26127 Description: perl-leak.26127 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] OpenJDK jvm vs Sun jvm was Re: OpenJDK vs Sun JDK
On Friday, April 16, 2010 11:44 AM, Agile Aspect wrote: > On Tue, Apr 13, 2010 at 11:03 PM, Christopher Chan > wrote: >> Hi all, >> >> Any comments as to Centos/RHEL 5.3's openjdk implementation versus Sun's? > > RedHat has acknowleged that Sun's JDK is faster - despite the fact > OpenJDK is native. Since it's native, it also means it's not platform > independent (in the sense of compile once run anywhere.) Argh, it appears that I have gotten so used to installing the jdk, it does not click when all I actually want at the moment is the jvm. How do the jvms compare? > > See the Fedora mailing list - there was discussion about a year ago. > Sun's JDK is faster eh...I guess that is sad news. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OpenJDK vs Sun JDK
On Tue, Apr 13, 2010 at 11:03 PM, Christopher Chan wrote: > Hi all, > > Any comments as to Centos/RHEL 5.3's openjdk implementation versus Sun's? > > cheers, > > Christopher > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > RedHat has acknowleged that Sun's JDK is faster - despite the fact OpenJDK is native. Since it's native, it also means it's not platform independent (in the sense of compile once run anywhere.) See the Fedora mailing list - there was discussion about a year ago. -- Enjoy global warming while it lasts. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] burning an image
On 04/16/2010 01:02 PM, Rob Kampen wrote: > david walcroft wrote: >> On 04/15/2010 11:10 AM, Kahlil Hodgson wrote: >>> On 15/04/10 09:58, david walcroft wrote: I downloaded CentOS-5.4-x86_64-bin-DVD.iso but I haven't used Centos before and I've haven't used a -bin-DVD.iso before,every attempt so far to burn one has produced coasters,what do I do to get an image. >>> I've had graphical apps give me coasters on occasion. From the command >>> line you can try: >>> >>> growisofs -dvd-compat -Z /dev/dvd=CentOS-5.4-x86_64-bin-DVD.iso >>> >>> (yes the syntax is a bit silly) >>> >>> Kal >>> >>> > I have found K3b to be excellent for burning CD and DVD from iso and > making my own data disks. >>> ___ >>> CentOS mailing list >>> CentOS@centos.org >>> http://lists.centos.org/mailman/listinfo/centos >> I tried your command but this error came up >> >> [da...@reddwarf ~]$ growisofs -dvd-compat -Z >> /dev/dvd=rpm/CentOS-5.4-x86_64-bin-DVD.iso >> :-( /dev/dvd: media is not recognized as recordable DVD: 0 >> >> I used a dvd-rw and a dvd-rw-dl with the same results. >> >> Thanks david >> ___ >> CentOS mailing list >> CentOS@centos.org >> http://lists.centos.org/mailman/listinfo/centos > > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos Yes it is good and I use all the time david ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] burning an image
david walcroft wrote: On 04/15/2010 11:10 AM, Kahlil Hodgson wrote: On 15/04/10 09:58, david walcroft wrote: I downloaded CentOS-5.4-x86_64-bin-DVD.iso but I haven't used Centos before and I've haven't used a -bin-DVD.iso before,every attempt so far to burn one has produced coasters,what do I do to get an image. I've had graphical apps give me coasters on occasion. From the command line you can try: growisofs -dvd-compat -Z /dev/dvd=CentOS-5.4-x86_64-bin-DVD.iso (yes the syntax is a bit silly) Kal I have found K3b to be excellent for burning CD and DVD from iso and making my own data disks. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos I tried your command but this error came up [da...@reddwarf ~]$ growisofs -dvd-compat -Z /dev/dvd=rpm/CentOS-5.4-x86_64-bin-DVD.iso :-( /dev/dvd: media is not recognized as recordable DVD: 0 I used a dvd-rw and a dvd-rw-dl with the same results. Thanks david ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos <>___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] burning an image
On 04/15/2010 10:58 AM, Robert Heller wrote: > At Thu, 15 Apr 2010 09:58:40 +1000 CentOS mailing list > wrote: > >> >> I downloaded CentOS-5.4-x86_64-bin-DVD.iso but I haven't used Centos >> before and I've haven't used a -bin-DVD.iso before,every attempt so far >> to burn one has produced coasters,what do I do to get an image. > > Were you burning it to a *DVD*-R? It is NOT a CD image. You need two > things: > > 1) A DVD burner (as opposed to a CD burner). > 2) A DVD-R (as opposed to a CD-R). > > Make sure you have the proper hardware and blank media. > > Also: did you download the md5sum file? Use that to do a check of the > md5sum to make sure your ISO file is not broken. > >> >> Thanks david >> ___ >> CentOS mailing list >> CentOS@centos.org >> http://lists.centos.org/mailman/listinfo/centos >> >> > I used a dvd-rw and a dvd-rw-dl on a dvd-rw-dl burner. md5sum is correct. Thanks david ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] burning an image
On 04/15/2010 11:10 AM, Kahlil Hodgson wrote: > On 15/04/10 09:58, david walcroft wrote: >> I downloaded CentOS-5.4-x86_64-bin-DVD.iso but I haven't used Centos >> before and I've haven't used a -bin-DVD.iso before,every attempt so far >> to burn one has produced coasters,what do I do to get an image. > > I've had graphical apps give me coasters on occasion. From the command > line you can try: > > growisofs -dvd-compat -Z /dev/dvd=CentOS-5.4-x86_64-bin-DVD.iso > > (yes the syntax is a bit silly) > > Kal > > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos I tried your command but this error came up [da...@reddwarf ~]$ growisofs -dvd-compat -Z /dev/dvd=rpm/CentOS-5.4-x86_64-bin-DVD.iso :-( /dev/dvd: media is not recognized as recordable DVD: 0 I used a dvd-rw and a dvd-rw-dl with the same results. Thanks david ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Building an "instant on" X terminal
> > Huh. A small version of Debian Etch. Boots (once POST has complted) > in under 25 seconds. > > Hmm, old versions of software, and "apt-get upgrade" causes the system > to die (root disk filled out) but definitely a possibility. I believe Synaptic is installed. I did not upgrade but used Synaptic to install the packages I needed but not included - lpd, xpdf. I found an Etch repo somewhere. I ran out of flash at some point. I needed serial printers for a plant label printer and could never get the RS232 printer working. We have 10 or so HP thin clients and fragility of the flash data has not been an issue. Instant on is not an issue and I missed that in your original note. Good Luck. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Viewing the NTP Server configured
On Thu, Apr 15, 2010 at 03:42:22PM +0700, Wahyu Darmawan (wahyu.darma...@gmail.com) wrote: > You can use /var/log/messages info for your synchronized time server. > That is only for the standard config, if you inherit machines this could be in /var/log/ntp.log or something as you can specify e.g. "-l /var/log/ntp.log" A better way would be ps -Afw | grep ntp Jobst > > On Thu, Apr 15, 2010 at 3:40 PM, Jatin Davey wrote: > > How do i know which NTP server is my linux box contacting to synchronize > > its time with that of the server ? > > > > Thanks > > Jatin > > ___ > > CentOS mailing list > > CentOS@centos.org > > http://lists.centos.org/mailman/listinfo/centos > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos -- Why don't sheep shrink when it rains? | |0| | Jobst Schmalenbach, jo...@barrett.com.au, General Manager | | |0| Barrett Consulting Group P/L & The Meditation Room P/L |0|0|0| +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scripting CPAN installs
On Thu, Apr 15, 2010 at 04:31:08PM -0400, Alan McKay (alan.mc...@gmail.com) wrote: > > While I can't answer that, I might try to actually call a Perl check after > > which although slightly extra work would yield the answer. > snip > We don't do auto-updates on production boxes so this is not a concern. > And yeah, my other alternative would be to do it all via yum instead > of CPAN, but that would be a massive change to the system I've > inherited. Correct me if I am wrong, but I was under the impression that this does not matter as the RPM's plug all the stuff into the correct locations for perl and the modules ... I use a lot of perl modules (e.g. for mimedefang, some online stuff I do etc) and cross upgraded a few machines, e.g. from FC6 to CentOS 5.4. So the perl installation used to be totally CPAN based, now I upgrade most of the stuff from YUM. So far nothing has been broken and they are all rock solid. So I would look for the RPM first, then for CPAN. Jobst > > > -- > ?Don't eat anything you've ever seen advertised on TV? > - Michael Pollan, author of "In Defense of Food" > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos -- f u cn rd ths, u cn gt a gd jb n cmptr prgmmng. [Anon] | |0| | Jobst Schmalenbach, jo...@barrett.com.au, General Manager | | |0| Barrett Consulting Group P/L & The Meditation Room P/L |0|0|0| +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How Do I ...
> Then came blade servers with built-in nics you can't unplug because they're > plugged to the blade center enclosure's internal switches :) ok, granted: 2 (OUCH) Jobst On Thu, Apr 15, 2010 at 08:32:06AM -0700, Fernando Gleiser (ferglei...@yahoo.com) wrote: > > > > > - Original Message > > From: Jobst Schmalenbach > > To: centos@centos.org > > Sent: Thu, April 15, 2010 1:20:45 AM > > Subject: Re: [CentOS] How Do I ... > > > > > ;-) > > in the olden days it was so easy, you had PCI cards and they were > > named by the slot number, starting with eth0 in PCI slot 1 and so on. > > Then > > came the inbuilt nics > > Then came the PCIx built nics > > Then came the PCI-e > > built nics > > > OUCH! ;-) > > > > I had an awful time trying to install a bunch of servers via PXE, the server > booted from one nic, then tried to configure eth0 which was ANOTHER nic which > was (of course) connected to a different built in switch and the installation > failed because it couldn't access the kickstart file. > > We had to trunk the 4 internal switches for the install, then we had to look > into the switch's management to see which card was in what port, then modify > the ifcfg-ethX to configure each one of the NICs with the right IP > > > Fer > > > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos -- Note to DOS users: UNIX is a lot more FUN - Peter Norton | |0| | Jobst Schmalenbach, jo...@barrett.com.au, General Manager | | |0| Barrett Consulting Group P/L & The Meditation Room P/L |0|0|0| +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How Do I ...
Yeah, but that has an advantage! After you plug in the USB-nic you can do an ifconfig and immediately know the HW address ... make up an "ifcfg-ethX" for that ... plug in the next one ... ifconfig ... make up an "ifcfg-ethx" for that one and so on. I use this method to tap into bridged adsl connections, VOIP interfaces etc ... jobst On Thu, Apr 15, 2010 at 11:10:18AM -0500, Les Mikesell (lesmikes...@gmail.com) wrote: > On 4/15/2010 10:32 AM, Fernando Gleiser wrote: > > >> in the olden days it was so easy, you had PCI cards and they were > >> named by the slot number, starting with eth0 in PCI slot 1 and so on. > >> Then > >> came the inbuilt nics > >> Then came the PCIx built nics > >> Then came the PCI-e > >> built nics > > > >> OUCH! ;-) > > > > > > Then came blade servers with built-in nics you can't unplug because > > they're plugged to the blade center enclosure's internal switches :) > > Worse, and probably more to the point of non-deterministic hardware > detection, you can plug in a USB->ethernet adapter anytime or several in > any order. > > -- >Les Mikesell > lesmikes...@gmail.com > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos -- My Carpenter has a 1956 VW Beetle. He still can go to any place in Australia, use any Oil, spark plugs, pertol, tires, wiper blades, etc available today with a car that old. If only software would be like that. | |0| | Jobst Schmalenbach, jo...@barrett.com.au, General Manager | | |0| Barrett Consulting Group P/L & The Meditation Room P/L |0|0|0| +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.x and Fedora
That is NOT a CentOS thing, **ONLY**. It is valid for ANY distribution, indeed! Most computers would be stable including windows machines if people would stop installing crap, e.g. why did Mircosoft "invent" the feature of restoring system32 (from dllcache) or any of their other "features" to make it more stable? ... and because some (rpm) package is provided in some repository packaged by "someone else" does not necessary mean that it is stable or stable for a certain setup (hw, combintation of packages etc) or doesn't overwrite "stuff". ... and because some package is provided in the MAIN repository does not mean its stable, either. I run amanda and have been doing since 1998, the version that is in the main repository (2.5.0p2) is 5 years old and crashed my 5.4 server (and another server I look after part time voluntarily). I currently run a self compiled 2.6.1 and never looked back (this includes all of amanda's clients). I like CentOS, and it has a lot of advantages. I came from Fedora BUT the MAIN reason why I moved is not stability BUT security as I have had uptimes of 300+ days on lots of FC machines, including a FC6 box I just replaced. But getting a security update for CentOS (e.g. for bind) is easier than for a 2 year old FCX distro because its not supported anymore. jobst On Thu, Apr 15, 2010 at 10:02:52AM +0100, Ned Slider (n...@unixmail.co.uk) wrote: > Jobst Schmalenbach wrote: > > why dont you download the source and compile it, its really easy. > > > > Source installs are not encouraged: > > http://wiki.centos.org/PackageManagement/SourceInstalls > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos -- Passwords are like underwear. You don't share them, you don't hang them on your monitor, or under your keyboard, you don't email them, or put them on a web site, and you must change them very often. | |0| | Jobst Schmalenbach, jo...@barrett.com.au, General Manager | | |0| Barrett Consulting Group P/L & The Meditation Room P/L |0|0|0| +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] (semi-) rugged laptop running CentOS 5?
Jim Davis wrote: > We're looking for a laptop to run in a 10,000', cold, occasionally wet > environment, and it needs to run CentOS 5. Perhaps something like the > Dell Latitude E6400 ATG? There's a reference to a minor trackball bug > for the 6400 under CentOS 5 (http://bugs.centos.org/view.php?id=4192) > but otherwise it sounds like the x86_64 version should run on it. > Ideally the system would use a SSD too. Any suggestions? > panasonic toughbook, one of the serious ones with the ip65 rating, like the 19 or the 30. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] (semi-) rugged laptop running CentOS 5?
We're looking for a laptop to run in a 10,000', cold, occasionally wet environment, and it needs to run CentOS 5. Perhaps something like the Dell Latitude E6400 ATG? There's a reference to a minor trackball bug for the 6400 under CentOS 5 (http://bugs.centos.org/view.php?id=4192) but otherwise it sounds like the x86_64 version should run on it. Ideally the system would use a SSD too. Any suggestions? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
Larry Vaden wrote: > On Thu, Apr 15, 2010 at 3:53 PM, Scott Silva wrote: > >> on 4-15-2010 1:36 PM Larry Vaden spake the following: >> >>> On Thu, Apr 15, 2010 at 3:18 PM, Ned Slider wrote: >>> Larry Vaden wrote: > On Thu, Apr 15, 2010 at 3:03 PM, Ned Slider wrote: > >> Changing dns to public services such as google or OpenDNS is not going >> to help as DNSBLs like Spamhaus will have blocked access by these >> services. Otherwise it would be simple to avoid paying for (business) >> access to Spamhaus. >> > Au contraire, there are benefits/economies of scale to spamhaus.org > from having an aggregator like opendns. > > Indeed, but not if you are charging for high volume and/or commercial use. >>> opendns resolves queries to zen.spamhaus.org and AFAIK all the major >>> DNSBLs. Period. End. >>> >>> kind regards/ldv >>> > > >> Resolves them, or forwards them? Just curious... >> > > Avoiding answering your question because of lack of expertise in the > difference of resolving vs. forwarding, but (IP taken from a recent > (Apr 15 16:01:25 CT) postfix NOQUEUE): > > [redac...@catch22 etc]# host 251.54.51.173.zen.spamhaus.org 208.67.222.222 > Using domain server: > Name: 208.67.222.222 > Address: 208.67.222.222#53 > Aliases: > > 251.54.51.173.zen.spamhaus.org has address 127.0.0.10 > 251.54.51.173.zen.spamhaus.org has address 127.0.0.4 > Well adding the -a option to host shows that the answer is not authoritative, so the query is being forwarded. host -a 251.54.51.173.zen.spamhaus.org 208.67.222.222 Trying "251.54.51.173.zen.spamhaus.org" Using domain server: Name: 208.67.222.222 Address: 208.67.222.222#53 Aliases: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23703 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;251.54.51.173.zen.spamhaus.org.INANY ;; ANSWER SECTION: 251.54.51.173.zen.spamhaus.org.893 INA127.0.0.10 251.54.51.173.zen.spamhaus.org.893 INA127.0.0.4 > [redac...@catch22 etc]# > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
On Thu, Apr 15, 2010 at 3:53 PM, Scott Silva wrote: > on 4-15-2010 1:36 PM Larry Vaden spake the following: >> On Thu, Apr 15, 2010 at 3:18 PM, Ned Slider wrote: >>> Larry Vaden wrote: On Thu, Apr 15, 2010 at 3:03 PM, Ned Slider wrote: > Changing dns to public services such as google or OpenDNS is not going > to help as DNSBLs like Spamhaus will have blocked access by these > services. Otherwise it would be simple to avoid paying for (business) > access to Spamhaus. Au contraire, there are benefits/economies of scale to spamhaus.org from having an aggregator like opendns. >>> >>> Indeed, but not if you are charging for high volume and/or commercial use. >> >> opendns resolves queries to zen.spamhaus.org and AFAIK all the major >> DNSBLs. Period. End. >> >> kind regards/ldv > Resolves them, or forwards them? Just curious... Avoiding answering your question because of lack of expertise in the difference of resolving vs. forwarding, but (IP taken from a recent (Apr 15 16:01:25 CT) postfix NOQUEUE): [redac...@catch22 etc]# host 251.54.51.173.zen.spamhaus.org 208.67.222.222 Using domain server: Name: 208.67.222.222 Address: 208.67.222.222#53 Aliases: 251.54.51.173.zen.spamhaus.org has address 127.0.0.10 251.54.51.173.zen.spamhaus.org has address 127.0.0.4 [redac...@catch22 etc]# ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
on 4-15-2010 1:36 PM Larry Vaden spake the following: > On Thu, Apr 15, 2010 at 3:18 PM, Ned Slider wrote: >> Larry Vaden wrote: >>> On Thu, Apr 15, 2010 at 3:03 PM, Ned Slider wrote: Changing dns to public services such as google or OpenDNS is not going to help as DNSBLs like Spamhaus will have blocked access by these services. Otherwise it would be simple to avoid paying for (business) access to Spamhaus. >>> >>> Au contraire, there are benefits/economies of scale to spamhaus.org >>> from having an aggregator like opendns. >>> >> >> Indeed, but not if you are charging for high volume and/or commercial use. > > opendns resolves queries to zen.spamhaus.org and AFAIK all the major > DNSBLs. Period. End. > > kind regards/ldv Resolves them, or forwards them? Just curious... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scripting CPAN installs
On 4/15/2010 3:23 PM, Alan McKay wrote: > Hey folks, > > Maybe there is a Perl/CPAN list that is a better place to ask this? > If so, maybe someone can point me to it. > > Anyway, I want to be able to script the installation of a bunch of > CPAN modules, and the first basic problem I am coming up against is > that the "cpan" command seems to always return 0 regardless of whether > or not the install completed. > > Google does not bring up a whole lot of help for me here, but I have > to think this problem has already been solved. > > Thanks for any guidance you can give. Things sometimes get ugly when you mix CPAN/rpm installs. Have you checked epel/rpmforge/etc. for the modules you need? -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scripting CPAN installs
>Hmmm, good point - I could do that. I've come across several methods >of checking module versions and none of them seemed "perfect" to me. >Can you recommend a method? Well, depends if you are in Perl, or bash, but really something as simple as: perl -e 'use HTML::Parser;' echo $? Aside from the mess of Perl diag which you can redirect away, you'll get a 0 or not. >We don't do auto-updates on production boxes so this is not a concern. > And yeah, my other alternative would be to do it all via yum instead >of CPAN, but that would be a massive change to the system I've >inherited. Good lord no, I don't either:) But when you "do" update:) Shame about the inheritance issue, it's not hard to install modules out of the base location and pull them in, unless you have a mess to change I guess... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
On Thu, Apr 15, 2010 at 3:18 PM, Ned Slider wrote: > Larry Vaden wrote: >> On Thu, Apr 15, 2010 at 3:03 PM, Ned Slider wrote: >>> Changing dns to public services such as google or OpenDNS is not going >>> to help as DNSBLs like Spamhaus will have blocked access by these >>> services. Otherwise it would be simple to avoid paying for (business) >>> access to Spamhaus. >> >> Au contraire, there are benefits/economies of scale to spamhaus.org >> from having an aggregator like opendns. >> > > Indeed, but not if you are charging for high volume and/or commercial use. opendns resolves queries to zen.spamhaus.org and AFAIK all the major DNSBLs. Period. End. kind regards/ldv ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scripting CPAN installs
> While I can't answer that, I might try to actually call a Perl check after > which although slightly extra work would yield the answer. Hmmm, good point - I could do that. I've come across several methods of checking module versions and none of them seemed "perfect" to me. Can you recommend a method? > You installing these locally in a non root users home? :) > > If not, I can tell you that will wreak havoc if a Perl related updated > comes down the pipe via yum... We don't do auto-updates on production boxes so this is not a concern. And yeah, my other alternative would be to do it all via yum instead of CPAN, but that would be a massive change to the system I've inherited. -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food" ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scripting CPAN installs
Alan McKay wrote: > Hey folks, > > Maybe there is a Perl/CPAN list that is a better place to ask this? > If so, maybe someone can point me to it. > > Anyway, I want to be able to script the installation of a bunch of > CPAN modules, and the first basic problem I am coming up against is > that the "cpan" command seems to always return 0 regardless of whether > or not the install completed. > > Google does not bring up a whole lot of help for me here, but I have > to think this problem has already been solved. > > Thanks for any guidance you can give. First suggestion would be to check if these modules are available as rpms. Check the epel and rpmforge repositories. This will make things go much smoother both now and when you need to update later. -- Bowie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
On 4/15/2010 3:00 PM, listserv.traf...@sloop.net wrote: > >> What happens if you change your resolv.conf to google's dns ? > I haven't tried this, but from reports, spamhaus.org blocks google's dns. [The > traffic limits are too high. If they didn't, no one would buy a > commercial zone transfer license...] > > So, while it's not likely to fix this problem, even if it were, it > seems like your "solution" to the broken DNS server is to use > someone else's DNS server. > > So, yeah, I could drive the neighbor's car when mine doesn't work. > But that doesn't fix my car. > > I'm interested in fixing mine, or at least understanding how and why it's > broken. Did you try reverting to bind-9.3.4-10.P1.el5_3.3 per the RH bug? Or can you temporarily run some other distribution (ubuntu/fedora, etc.) as a resolver or forwarder? -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scripting CPAN installs
>Anyway, I want to be able to script the installation of a bunch of >CPAN modules, and the first basic problem I am coming up against is >that the "cpan" command seems to always return 0 regardless of whether >or not the install completed. While I can't answer that, I might try to actually call a Perl check after which although slightly extra work would yield the answer. You installing these locally in a non root users home? :) If not, I can tell you that will wreak havoc if a Perl related updated comes down the pipe via yum... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] scripting CPAN installs
Hey folks, Maybe there is a Perl/CPAN list that is a better place to ask this? If so, maybe someone can point me to it. Anyway, I want to be able to script the installation of a bunch of CPAN modules, and the first basic problem I am coming up against is that the "cpan" command seems to always return 0 regardless of whether or not the install completed. Google does not bring up a whole lot of help for me here, but I have to think this problem has already been solved. Thanks for any guidance you can give. -Alan -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food" ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
Larry Vaden wrote: > On Thu, Apr 15, 2010 at 3:03 PM, Ned Slider wrote: >> Changing dns to public services such as google or OpenDNS is not going >> to help as DNSBLs like Spamhaus will have blocked access by these >> services. Otherwise it would be simple to avoid paying for (business) >> access to Spamhaus. > > Au contraire, there are benefits/economies of scale to spamhaus.org > from having an aggregator like opendns. > Indeed, but not if you are charging for high volume and/or commercial use. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
On Thu, Apr 15, 2010 at 3:03 PM, Ned Slider wrote: > > Changing dns to public services such as google or OpenDNS is not going > to help as DNSBLs like Spamhaus will have blocked access by these > services. Otherwise it would be simple to avoid paying for (business) > access to Spamhaus. Au contraire, there are benefits/economies of scale to spamhaus.org from having an aggregator like opendns. kind regards/ldv ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
listserv.traf...@sloop.net wrote: >> What happens if you change your resolv.conf to google's dns ? >> > I haven't tried this, but from reports, spamhaus.org blocks google's dns. [The > traffic limits are too high. If they didn't, no one would buy a > commercial zone transfer license...] > > So, while it's not likely to fix this problem, even if it were, it > seems like your "solution" to the broken DNS server is to use > someone else's DNS server. > > So, yeah, I could drive the neighbor's car when mine doesn't work. > But that doesn't fix my car. > > I'm interested in fixing mine, or at least understanding how and why it's > broken. > > Thanks for your time and thoughts though. I think the point was to test using a different DNS in order to verify that the problem is with your DNS server before you spend a lot of time on it. Unfortunately, this is not going to work in your case for the stated reasons. -- Bowie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
sys Admin wrote: > What happens if you change your resolv.conf to google's dns ? > > Changing dns to public services such as google or OpenDNS is not going to help as DNSBLs like Spamhaus will have blocked access by these services. Otherwise it would be simple to avoid paying for (business) access to Spamhaus. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
> What happens if you change your resolv.conf to google's dns ? I haven't tried this, but from reports, spamhaus.org blocks google's dns. [The traffic limits are too high. If they didn't, no one would buy a commercial zone transfer license...] So, while it's not likely to fix this problem, even if it were, it seems like your "solution" to the broken DNS server is to use someone else's DNS server. So, yeah, I could drive the neighbor's car when mine doesn't work. But that doesn't fix my car. I'm interested in fixing mine, or at least understanding how and why it's broken. Thanks for your time and thoughts though. -Greg > On 4/15/10, Nataraj wrote: >> listserv.traf...@sloop.net wrote: Check out the following bug report. I would also look at other bind bug reports. My sense is that redhat has deviated quite a bite from the ISC version of bind. In particular I believe that they disabled or otherwise modified the caching behavior back about 6-8 months ago when there were major security issues with bind. I have felt that my Red Hat/Centos name servers have not worked as well as Fedora or ISC bind name servers since this time. You might try installing ISC bind and see if that solves your problem. >>> >>> https://bugzilla.redhat.com/show_bug.cgi?id=553334 >>> >>> Nataraj >>> >>> Interesting - though in our case it's failing long before a few >>> million lookups. I don't much relish compiling ISC versions to run on >>> my box - the security implications and other hassles don't seem >>> trivial. [We don't allow external [the world] lookups - just local >>> "trusted" users, but that only mitigates some of the security concerns.] >>> >>> Perhaps it's possible to use an older version that's security >>> patched. Ugh. >>> >> Though I have not done it in a while, It's not a big deal to build ISC >> bind. If you have compilers installed, you untar it and run "make" or >> "make install", maybe setting up the path for installation. With the >> security issues today, I often run a separate system for name servers >> (actually I use virtual machines). In fact, mostly I setup both an >> internal and a external nameserver where the internal one forwards >> queries to the external one so it never receives packets from the >> Internet. So the internal one could be on your mail server and the >> external one could be a seperate box. For test purposes, you could try >> ISC bind on any old box just to determine if it solves the problem. >> >> Alternatively, if the problem is urgent I guess you could buy a red hat >> license and try to get them to up the priority on resolving this. If >> you have the time and skills, you could install a debug compiled version >> of CentOS bind and try to either debug it or capture a dump of it when >> it breaks and submit that to developers. >> >> I don't think running ISC bind for a short time is a major risk. It's >> quite widely deployed in the field. >> >> Nataraj >> ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
What happens if you change your resolv.conf to google's dns ? On 4/15/10, Nataraj wrote: > listserv.traf...@sloop.net wrote: >>> Check out the following bug report. I would also look at other bind bug >>> reports. My sense is that redhat has deviated quite a bite from the ISC >>> version of bind. In particular I believe that they disabled or otherwise >>> modified the caching behavior back about 6-8 months ago when there were >>> major security issues with bind. I have felt that my Red Hat/Centos name >>> servers have not worked as well as Fedora or ISC bind name servers since >>> this time. You might try installing ISC bind and see if that solves your >>> problem. >>> >> >> >>> https://bugzilla.redhat.com/show_bug.cgi?id=553334 >>> >> >> >>> Nataraj >>> >> >> Interesting - though in our case it's failing long before a few >> million lookups. I don't much relish compiling ISC versions to run on >> my box - the security implications and other hassles don't seem >> trivial. [We don't allow external [the world] lookups - just local >> "trusted" users, but that only mitigates some of the security concerns.] >> >> Perhaps it's possible to use an older version that's security >> patched. Ugh. >> > Though I have not done it in a while, It's not a big deal to build ISC > bind. If you have compilers installed, you untar it and run "make" or > "make install", maybe setting up the path for installation. With the > security issues today, I often run a separate system for name servers > (actually I use virtual machines). In fact, mostly I setup both an > internal and a external nameserver where the internal one forwards > queries to the external one so it never receives packets from the > Internet. So the internal one could be on your mail server and the > external one could be a seperate box. For test purposes, you could try > ISC bind on any old box just to determine if it solves the problem. > > Alternatively, if the problem is urgent I guess you could buy a red hat > license and try to get them to up the priority on resolving this. If > you have the time and skills, you could install a debug compiled version > of CentOS bind and try to either debug it or capture a dump of it when > it breaks and submit that to developers. > > I don't think running ISC bind for a short time is a major risk. It's > quite widely deployed in the field. > > Nataraj > >> -Greg >> >> ___ >> CentOS mailing list >> CentOS@centos.org >> http://lists.centos.org/mailman/listinfo/centos >> > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > -- Sent from my mobile device ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
listserv.traf...@sloop.net wrote: >> Check out the following bug report. I would also look at other bind bug >> reports. My sense is that redhat has deviated quite a bite from the ISC >> version of bind. In particular I believe that they disabled or otherwise >> modified the caching behavior back about 6-8 months ago when there were >> major security issues with bind. I have felt that my Red Hat/Centos name >> servers have not worked as well as Fedora or ISC bind name servers since >> this time. You might try installing ISC bind and see if that solves your >> problem. >> > > >> https://bugzilla.redhat.com/show_bug.cgi?id=553334 >> > > >> Nataraj >> > > Interesting - though in our case it's failing long before a few > million lookups. I don't much relish compiling ISC versions to run on > my box - the security implications and other hassles don't seem > trivial. [We don't allow external [the world] lookups - just local > "trusted" users, but that only mitigates some of the security concerns.] > > Perhaps it's possible to use an older version that's security > patched. Ugh. > Though I have not done it in a while, It's not a big deal to build ISC bind. If you have compilers installed, you untar it and run "make" or "make install", maybe setting up the path for installation. With the security issues today, I often run a separate system for name servers (actually I use virtual machines). In fact, mostly I setup both an internal and a external nameserver where the internal one forwards queries to the external one so it never receives packets from the Internet. So the internal one could be on your mail server and the external one could be a seperate box. For test purposes, you could try ISC bind on any old box just to determine if it solves the problem. Alternatively, if the problem is urgent I guess you could buy a red hat license and try to get them to up the priority on resolving this. If you have the time and skills, you could install a debug compiled version of CentOS bind and try to either debug it or capture a dump of it when it breaks and submit that to developers. I don't think running ISC bind for a short time is a major risk. It's quite widely deployed in the field. Nataraj > -Greg > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] timeout problem
Oh, static IP on the computer. Yeah, already did that to no avail. -Original Message- Message: 7 Date: Wed, 14 Apr 2010 13:08:16 -0400 From: JohnS Subject: Re: [CentOS] timeout problem To: CentOS mailing list Message-ID: <1271264896.3366.23.ca...@ethies> Content-Type: text/plain On Wed, 2010-04-14 at 16:23 +, tony.chamberl...@lemko.com wrote: > I found the response below today online to a question I had. > For some reason I never got the mail. I am not quite clear > on what "DHCP + DFG + 2DNS entries" means when calculating the IP > to set for the router: > > Thanks > > Re: [CentOS] Yum/WGET/HTTP sourceforge etc. new > April 12, 2010 08:10AM > On Sun, 2010-04-11 at 22:57 +, tony.chamberl...@lemko.com wrote: > > > Here is what I tried. When I put the machine directly on an AT&T IP > > connection (12.147.X.Y) everything worked fine. > > Same with Comcast on a direct link. The times I am having problems is when > > our router is hooked up to a Comcast > > IP (70.88.X.Y) and assigns 192.168.5.X addresses to our machines. So when I > > was doing the above from 192.168.5.27 > > going through the router through Comcast is when I had the problem. > > > --- > Try this: > For the NIC on your Comcast router set its ip to one that the dhcp in > the router gives out + DFG + 2 DNS entries. In order to have it static. > I see lots of routers with your problem. > > John --- DFG = default gateway 2DNS = primary and secondary dns server addresses DHCP = Would be your normal assigned ip address from the router on the nic card that the comcast router hands out. So now you pick one ip address the router assigns from it's dhcp address block and create a static ip configuration for your eth0 nic, If the routers dhcp address block is 192.168.2.2 - 192.168.2.100 pick 192.168.2.10 for the ip. Now eth0 needs a default gateway which is your routers address maybe like 192.168.2.1. Now eth0 needs a primary and secondary DNS entry. If the isp only has one then use one else you can use the default gateway address of the router but not recomended because you are having problems so I think you need the real dns. If you log into the router you will see or find the dns entries you need and the dhcp block that is assigned. John ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
>> > Check out the following bug report. I would also look at other bind bug > reports. My sense is that redhat has deviated quite a bite from the ISC > version of bind. In particular I believe that they disabled or otherwise > modified the caching behavior back about 6-8 months ago when there were > major security issues with bind. I have felt that my Red Hat/Centos name > servers have not worked as well as Fedora or ISC bind name servers since > this time. You might try installing ISC bind and see if that solves your > problem. > https://bugzilla.redhat.com/show_bug.cgi?id=553334 > Nataraj Interesting - though in our case it's failing long before a few million lookups. I don't much relish compiling ISC versions to run on my box - the security implications and other hassles don't seem trivial. [We don't allow external [the world] lookups - just local "trusted" users, but that only mitigates some of the security concerns.] Perhaps it's possible to use an older version that's security patched. Ugh. -Greg ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
> On Wed, 2010-04-14 at 17:36 -0700, listserv.traf...@sloop.net wrote: >> -- >> Problem: >> Postfix is doing RBL lookups on zen.spamhaus.org. >> Everything goes along groovy - but then lookups start failing. >> > Does your network interface show any abnormalities - dropped packets > etc? I assume you have no local ratelimiting (via iptables etc)? No rate limiting, and ifconfig isn't showing any errors/drops/overruns etc. -Greg ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How Do I ...
On 4/15/2010 10:32 AM, Fernando Gleiser wrote: >> in the olden days it was so easy, you had PCI cards and they were >> named by the slot number, starting with eth0 in PCI slot 1 and so on. >> Then >> came the inbuilt nics >> Then came the PCIx built nics >> Then came the PCI-e >> built nics > >> OUCH! ;-) > > > Then came blade servers with built-in nics you can't unplug because they're > plugged to the blade center enclosure's internal switches :) Worse, and probably more to the point of non-deterministic hardware detection, you can plug in a USB->ethernet adapter anytime or several in any order. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How Do I ...
>We had to trunk the 4 internal switches for the install, then we had to... Actually all you had to do was utilize ks config params for this scenario. See the link I posted earlier or read the ks deployment chapter. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How Do I ...
- Original Message > From: Jobst Schmalenbach > To: centos@centos.org > Sent: Thu, April 15, 2010 1:20:45 AM > Subject: Re: [CentOS] How Do I ... > > ;-) > in the olden days it was so easy, you had PCI cards and they were > named by the slot number, starting with eth0 in PCI slot 1 and so on. > Then > came the inbuilt nics > Then came the PCIx built nics > Then came the PCI-e > built nics > OUCH! ;-) Then came blade servers with built-in nics you can't unplug because they're plugged to the blade center enclosure's internal switches :) I had an awful time trying to install a bunch of servers via PXE, the server booted from one nic, then tried to configure eth0 which was ANOTHER nic which was (of course) connected to a different built in switch and the installation failed because it couldn't access the kickstart file. We had to trunk the 4 internal switches for the install, then we had to look into the switch's management to see which card was in what port, then modify the ifcfg-ethX to configure each one of the NICs with the right IP Fer ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Cloud on CentOS
You mention 200 locations... Do you want to consolidate the application to 1 location and those locations use this? Not clear to me what it is you want to accomplish... On Thu, 15 Apr 2010, CList wrote: >> For what its worth...I do a little cloud-y type stuff at home. Mostly >> spinning up VMs using KOAN/Cobbler and configuration with Puppet. Is that > >> the kind of thing you are interested in? > > I am deploying an application for about 200 locations, and I think cloud is > what I am looking for > > -- Scot P. Floess 27 Lake Royale Louisburg, NC 27549 252-478-8087 (Home) 919-890-8117 (Work) Chief Architect JPlate http://sourceforge.net/projects/jplate Chief Architect JavaPIM http://sourceforge.net/projects/javapim Architect Keros http://sourceforge.net/projects/keros ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Power consumption monitoring
At Thu, 15 Apr 2010 13:31:11 +0200 CentOS mailing list
wrote:
>
>
>
> On Thursday 15 April 2010, Mathieu Baudier wrote:
> > Hi,
> >
> > I have quite a few low-end development/test servers running
> > continuously and I would like to better manage their power
> > consumption.
> > I have found interesting information on how to perform CPU scaling
> > (e.g. [1] or [2]).
> >
> > But I cannot find if there is a way to (software) monitor power
> > consumption on CentOS (or other such data like CPU temperature, fan
> > speed etc.).
>
> Most machines simply don't have that hardware. Some laptops do and then, with
> proper kernel, you can run powertop (or read /proc/acpi/power...).
Some things are handled by motherboard and/or processor sensors and
lm_sensors will access these sensors ("CPU temperature, fan speed etc.").
--
Robert Heller -- Get the Deepwoods Software FireFox Toolbar!
Deepwoods Software-- Linux Installation and Administration
http://www.deepsoft.com/ -- Web Hosting, with CGI and Database
hel...@deepsoft.com -- Contract Programming: C/C++, Tcl/Tk
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Re: [CentOS] Power consumption monitoring
On Thursday 15 April 2010, Mathieu Baudier wrote: > Hi, > > I have quite a few low-end development/test servers running > continuously and I would like to better manage their power > consumption. > I have found interesting information on how to perform CPU scaling > (e.g. [1] or [2]). > > But I cannot find if there is a way to (software) monitor power > consumption on CentOS (or other such data like CPU temperature, fan > speed etc.). Most machines simply don't have that hardware. Some laptops do and then, with proper kernel, you can run powertop (or read /proc/acpi/power...). Some servers have power meters built in but uses tools specific to that vendor/server (like HP ppic). > What I read so far is that support is quite limited in this kernel > (e.g. PowerTop not providing useful information). > > Before I start tuning I would like to be able to measure whether my > changes are having any impact at all. I'd suggest that you buy an external power meter like kill-a-watt. /Peter > Thanks in advance, > > Mathieu > > > [1] http://www.lesswatts.org/tips/cpu.php > [2] http://www.spencerstirling.com/computergeek/powersaving.html signature.asc Description: This is a digitally signed message part. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Power consumption monitoring
Hi, I have quite a few low-end development/test servers running continuously and I would like to better manage their power consumption. I have found interesting information on how to perform CPU scaling (e.g. [1] or [2]). But I cannot find if there is a way to (software) monitor power consumption on CentOS (or other such data like CPU temperature, fan speed etc.). What I read so far is that support is quite limited in this kernel (e.g. PowerTop not providing useful information). Before I start tuning I would like to be able to measure whether my changes are having any impact at all. Thanks in advance, Mathieu [1] http://www.lesswatts.org/tips/cpu.php [2] http://www.spencerstirling.com/computergeek/powersaving.html ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apparent BIND problem doing RBL lookups for Postfix
On Wed, 2010-04-14 at 17:36 -0700, listserv.traf...@sloop.net wrote: > -- > Problem: > Postfix is doing RBL lookups on zen.spamhaus.org. > Everything goes along groovy - but then lookups start failing. > Does your network interface show any abnormalities - dropped packets etc? I assume you have no local ratelimiting (via iptables etc)? John. -- John Horne, University of Plymouth, UK Tel: +44 (0)1752 587287Fax: +44 (0)1752 587001 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Viewing the NTP Server configured
Thanks for all the support , i found that i dont have the ntp daemon running on my box which will contact the server. once i have it i could use the support provided. Thanks Jatin On 4/15/2010 2:25 PM, John R Pierce wrote: > Jatin Davey wrote: > >> How do i know which NTP server is my linux box contacting to synchronize >> its time with that of the server ? >> >> > $ /usr/sbin/ntptrace > localhost: stratum 3, offset 0.17, synch distance 0.07758 > io.sf.netdot.net: stratum 2, offset 0.000548, synch distance 0.04774 > bigben.cac.washington.edu: stratum 1, offset -0.001988, synch distance > 0.00060, refid 'USNO' > > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.x and Fedora
Jobst Schmalenbach wrote: > why dont you download the source and compile it, its really easy. > Source installs are not encouraged: http://wiki.centos.org/PackageManagement/SourceInstalls ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Viewing the NTP Server configured
Jatin Davey wrote: > How do i know which NTP server is my linux box contacting to synchronize > its time with that of the server ? > $ /usr/sbin/ntptrace localhost: stratum 3, offset 0.17, synch distance 0.07758 io.sf.netdot.net: stratum 2, offset 0.000548, synch distance 0.04774 bigben.cac.washington.edu: stratum 1, offset -0.001988, synch distance 0.00060, refid 'USNO' ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Viewing the NTP Server configured
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 thus Wahyu Darmawan spake: > You can use /var/log/messages info for your synchronized time server. > > > On Thu, Apr 15, 2010 at 3:40 PM, Jatin Davey wrote: >> How do i know which NTP server is my linux box contacting to synchronize >> its time with that of the server ? >> >> Thanks >> Jatin A detailed listing can be created by issuing ntpq -c peers HTH, Timo -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.5 (GNU/Linux) iD8DBQFLxtJ/fg746kcGBOwRAspGAKCh9oEN8Z3VVUs5kHZWHGF9+A2TJwCguL1x ym6hEQDMhszijZ0eyF/2va4= =Dd+P -END PGP SIGNATURE- ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Viewing the NTP Server configured
You can use /var/log/messages info for your synchronized time server. On Thu, Apr 15, 2010 at 3:40 PM, Jatin Davey wrote: > How do i know which NTP server is my linux box contacting to synchronize > its time with that of the server ? > > Thanks > Jatin > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Viewing the NTP Server configured
How do i know which NTP server is my linux box contacting to synchronize its time with that of the server ? Thanks Jatin ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
