Re: [CentOS] what causes CUPS to dis-enable a printer?
On Tue, Feb 9, 2010 at 11:37 PM, Paul Johnson wrote: > In our computer lab, there are 6 Centos 5.4 workstations. There is an > HP printer with jet direct card. It often works. > > But sometimes users come and get me saying the printer is broken, but > it is actually working fine for *most* of the workstations. > > On the troubled system, I run system-config-printer and I check the > printer in question (under properties) and I see the printer has been > disabled. I mean, the box by the word Enabled is empty. > > After I manually (use lprm) remove the print jobs, and set the printer > to Enabled, then the print queue will start working again. > There is a cups timeout value that might help. Cups will disable a printer if it doesn't respond after a certain amount of time. If you add a Timeout value to cupsd.conf you can either disable or set the timeout higher. If that doesn't work, you may need to change the loglevel to debug and watch until it fails. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone using Active Driectory auth with Centos 5.4.....?
On Tue, 2010-02-09 at 14:21 -0700, Craig White wrote: > On Tue, 2010-02-09 at 18:08 +, Joseph L. Casale wrote: > > >This looks like the way to go, I don't like the username /pass stored in > > >plain text but maybe if I create a special group that doesn't really have > > >any privileges this would work, geez AD is just plain bad...lol, Thanks. > > > > I guess you think insecure would be better? If I understand your need, you > > want > > to make AD insecure, so please enable anonymous binds so you don't need a > > user/pass > > to make the query:) > > > > Or program your own auth backend that binds with the intended creds asking > > for auth:) > > Oh, and do this w/o tls/ssl because you want it insecure:) > > seems to me that permitting an anonymous bind to LDAP is inherently more > secure than requiring a user/password combination so I don't think that > your explanation is exactly true. In Microsoft's view, the only systems > querying LDAP would be systems automatically passing the authentication. > > Craig Yes it is true, you have to have that for it to work correctly. John ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] R package on centos 5.1
Greetings, On Wed, Feb 10, 2010 at 10:58 AM, hersh parikh wrote: > I want to install R package on centos 5.1, however I am not able to > install it . Can anyone please tell me how can I install R on centos 5.1? yum -y install R Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * addons: mirrors.hns.net.in * base: mirrors.hns.net.in * epel: ftp.kddilabs.jp * extras: mirrors.hns.net.in * rpmforge: fr2.rpmfind.net * updates: mirrors.hns.net.in addons | 951 B 00:00 andrewfarley | 951 B 00:00 base | 2.1 kB 00:00 epel | 3.4 kB 00:00 extras | 1.1 kB 00:00 rpmforge | 1.1 kB 00:00 updates | 1.9 kB 00:00 Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package R.i386 0:2.10.0-2.el5 set to be updated --> Processing Dependency: R-devel = 2.10.0-2.el5 for package: R --> Processing Dependency: libRmath-devel = 2.10.0-2.el5 for package: R --> Running transaction check ---> Package R-devel.i386 0:2.10.0-2.el5 set to be updated --> Processing Dependency: R-core = 2.10.0-2.el5 for package: R-devel --> Processing Dependency: tcl-devel for package: R-devel --> Processing Dependency: bzip2-devel for package: R-devel --> Processing Dependency: libX11-devel for package: R-devel --> Processing Dependency: gcc-gfortran for package: R-devel --> Processing Dependency: tk-devel for package: R-devel --> Processing Dependency: pcre-devel for package: R-devel --> Processing Dependency: tetex-latex for package: R-devel ---> Package libRmath-devel.i386 0:2.10.0-2.el5 set to be updated --> Processing Dependency: libRmath = 2.10.0-2.el5 for package: libRmath-devel --> Running transaction check ---> Package R-core.i386 0:2.10.0-2.el5 set to be updated --> Processing Dependency: xdg-utils for package: R-core --> Processing Dependency: perl(File::Copy::Recursive) for package: R-core ---> Package bzip2-devel.i386 0:1.0.3-4.el5_2 set to be updated ---> Package gcc-gfortran.i386 0:4.1.2-46.el5_4.2 set to be updated ---> Package libRmath.i386 0:2.10.0-2.el5 set to be updated ---> Package libX11-devel.i386 0:1.0.3-11.el5 set to be updated --> Processing Dependency: xorg-x11-proto-devel >= 7.1-2 for package: libX11-devel --> Processing Dependency: libXau-devel for package: libX11-devel --> Processing Dependency: libXdmcp-devel for package: libX11-devel ---> Package pcre-devel.i386 0:6.6-2.el5_1.7 set to be updated ---> Package tcl-devel.i386 0:8.4.13-4.el5 set to be updated ---> Package tetex-latex.i386 0:3.0-33.8.el5 set to be updated --> Processing Dependency: tetex-dvips = 3.0 for package: tetex-latex --> Processing Dependency: tetex = 3.0 for package: tetex-latex ---> Package tk-devel.i386 0:8.4.13-5.el5_1.1 set to be updated --> Running transaction check ---> Package libXau-devel.i386 0:1.0.1-3.1 set to be updated ---> Package libXdmcp-devel.i386 0:1.0.1-2.1 set to be updated ---> Package perl-File-Copy-Recursive.noarch 0:0.38-1.el5.rf set to be updated ---> Package tetex.i386 0:3.0-33.8.el5 set to be updated --> Processing Dependency: tetex-fonts = 3.0 for package: tetex ---> Package tetex-dvips.i386 0:3.0-33.8.el5 set to be updated ---> Package xdg-utils.noarch 0:1.0.2-4.el5 set to be updated ---> Package xorg-x11-proto-devel.i386 0:7.1-13.el5 set to be updated --> Processing Dependency: mesa-libGL-devel for package: xorg-x11-proto-devel --> Running transaction check ---> Package mesa-libGL-devel.i386 0:6.5.1-7.7.el5 set to be updated ---> Package tetex-fonts.i386 0:3.0-33.8.el5 set to be updated --> Finished Dependency Resolution Dependencies Resolved Package Arch VersionRepository Size Installing: R i386 2.10.0-2.el5 epel 14 k Installing for dependencies: R-core i386 2.10.0-2.el5 epel 31 M R-devel i386 2.10.0-2.el5 epel 87 k bzip2-devel i386 1.0.3-4.el5_2 base 38 k gcc-gfortrani386 4.1.2-46.el5_4.2 updates 3.1 M libRmathi386 2.10.0-2.el5 epel 93 k libRmath-devel i386 2.10.0-2.el5 epel120 k libX11-develi386 1.0.3-11.el5 base661 k libXau-develi386 1.0.1-3.1 base 11 k libXdmcp-devel i386 1.0.1-2.1 bas
Re: [CentOS] R package on centos 5.1
Greetings, On Wed, Feb 10, 2010 at 10:58 AM, hersh parikh wrote: > Hi > > I want to install R package on centos 5.1, however I am not able to > install it . Can anyone please tell me how can I install R on centos 5.1? I am able to install it after enabling epel and rpmforge repo: yum install R Yes it is a capital letter R. I have earlier installed it on Centos 5.0 (circa 2005-6). What is the messages if any? Regards, Rajagopal ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone using Active Driectory auth with Centos 5.4.....?
On Mon, Feb 8, 2010 at 8:18 AM, Tom Bishop wrote: > Setting up a new backuppc for a small group of device and I am running > centos 5.4 with winbind setup and working. Everything is working and I > would like the users to authenicate using their AD creds and was wondering > what folks are using to do that with apache 2.2 and centos 5.4. I know > about mod_auth_pam but that seems pretty dead so I was just wondering what > folks were using and whats the easiest to setup. Any pointers to any how > to's would be appreciated...Thanks. This works for me PerlModule Authen::Simple::Apache PerlModule Authen::Simple::ActiveDirectory PerlSetVar AuthenSimpleActiveDirectory_host "mydc.inside.net" PerlSetVar AuthenSimpleActiveDirectory_principal "mydomain" PerlAuthenHandler Authen::Simple::ActiveDirectory AuthType Basic AuthName "Sekret Playce" require valid-user -- Stephen Carville ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] what causes CUPS to dis-enable a printer?
Greetings, On Wed, Feb 10, 2010 at 10:07 AM, Paul Johnson wrote: > But sometimes users come and get me saying the printer is broken, but > it is actually working fine for *most* of the workstations. > > On the troubled system, I run system-config-printer and I check the > printer in question (under properties) and I see the printer has been > disabled. I mean, the box by the word Enabled is empty. I would strongly suggest using the web interface localhost:631 instead of system-config-printer. Regards, Rajagopal ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] R package on centos 5.1
hersh parikh wrote: >> I want to install R package on centos 5.1, however I am not able to install it << I'm running it here on Centos 5.4. What problem are you having? Error messages? Best, --- Les Bell [http://www.lesbell.com.au] Tel: +61 2 9451 1144 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] R package on centos 5.1
Hi I want to install R package on centos 5.1, however I am not able to install it . Can anyone please tell me how can I install R on centos 5.1? Thank you Hersh Your Mail works best with the New Yahoo Optimized IE8. Get it NOW! http://downloads.yahoo.com/in/internetexplorer/___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] what causes CUPS to dis-enable a printer?
In our computer lab, there are 6 Centos 5.4 workstations. There is an HP printer with jet direct card. It often works. But sometimes users come and get me saying the printer is broken, but it is actually working fine for *most* of the workstations. On the troubled system, I run system-config-printer and I check the printer in question (under properties) and I see the printer has been disabled. I mean, the box by the word Enabled is empty. After I manually (use lprm) remove the print jobs, and set the printer to Enabled, then the print queue will start working again. I've checked the files in /var/log/cups and there's nothing evident. error_log has nothing. We have had the problem during the year (that others have reported in this list). When trying to print some pdf files from Evince, the symptom of the problem is that the pdf files don't print. They seem to "clog" the printer. When that happens, I have seen the Enabled box come unchecked in the printer configurator. However, the most recent problems are not associated with the use of Evince. I would really appreciate some tips about how to bugshoot this problem. pj ps. The Cups server is running on the system in question, lpq shows lots of print jobs waiting. -- Paul E. Johnson Professor, Political Science 1541 Lilac Lane, Room 504 University of Kansas ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone using Active Driectory auth with Centos 5.4.....?
On Tue, 2010-02-09 at 21:29 +, Joseph L. Casale wrote: > >seems to me that permitting an anonymous bind to LDAP is inherently more > >secure than requiring a user/password combination so I don't think that > >your explanation is exactly true. > > There are ways to create accounts just for this with reduced privileges. > Research technet... > > >In Microsoft's view, the only systems querying LDAP would be systems > >automatically passing the authentication. > > Wow, someone actually hacking on MS for expecting us to do things secure? > What will they expect next:) > > If they didn't and by default allowed anon binds, "someone" would surely > say "Microsoft sucks, they don't expect us to do this securely, blah blah". > > The topic is mute, lets save the list the despair of rehashing the severely > hashed. From the point of view of some, MS will always suck. Changing the > minds of that type of person isn't my interest, I was merely pointing out > some facts surrounding the implementation of the topic at hand. Sorry for > disagreeing with you:) I just disagree with your parsing and conclusions. I did not hack on MS for expecting us to do things securely nor did I say that preventing anonymous binds made it more secure. I think I actually said the opposite. anonymous binds are just that - anonymous binds and there could easily be ACL's that govern what you can access without a user/password but I think Microsoft is after overall simplicity. The topic would necessarily be 'moot' and not 'mute' and I was uncomfortable with the notion that you were chiding the OP for thinking that an anonymous bind was less secure - in most instances, it is a more secure option... especially for his usage. If he could bind anonymously, he could bind, let the user supply the account/password, authenticate and thus no account information would be necessary in the config files so it speaks directly to the OP's desires. Better security. Craig -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.4 x86_64 authenticating against AD (Server 2008r2)
On Feb 9, 2010, at 6:27 PM, Dan Burkland wrote: > From: centos-boun...@centos.org [centos-boun...@centos.org] On > Behalf Of Ross Walker [rswwal...@gmail.com] > Sent: Tuesday, February 09, 2010 4:08 PM > To: CentOS mailing list > Subject: Re: [CentOS] CentOS 5.4 x86_64 authenticating against AD > (Server 2008r2) > > On Tue, Feb 9, 2010 at 3:23 PM, Joseph L. Casale > wrote: >>> That RID map feature of samba is great. >> >> Forgot about that, AFAIK, you can do that w/ SFU & pam mods. >> >> I have two Samba servers left that I want to get rid of:) > > You can do it with SFU, but SFU doesn't create UID/GIDs for existing > users, you have to do those manually. > > Then there is the whole issue of maintaining those IDs over a long > period of time. > > Also with RID mapping I can map different domains into different ID > ranges. > > 10 - 19 first domain > 20 - 29 second domain > > And so on. > > You know you don't need the full Samba install to setup a winbind->NIS > server, just the Samba client will do. > > Then have your Linux boxes using NIS+Kerberos and only 1-2 boxes needs > have a smb.conf and winbind running. > > NIS is only as secure as the network it runs on. If it bumps against > public networks (unsecure wifi so on) use 802.11 authentication. > > -Ross > ___ > > For anybody wanting to know how to go the LDAP Route I found an > interesting article in the linux.com archives > http://www.linux.com/archive/feed/40983 > > Thanks again guys for your input. If it works for you great. If you have hundreds or thousands of users and hundreds of groups, well good luck. It is extremely hard to automate assigning these uids/ gids and making sure they don't collide with each other or other unix systems and doing it by hand is a torture reserved for the ninth circle of hell. If only nss_ldap had a SID->UID/GID mapping like samba has. -Ross ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Lightscribe
On Tue, Feb 9, 2010 at 1:19 PM, Robert wrote: > > Yes, I have tried DVD media that is peddled as being lightscribe capable > and just minutes ago, opened a 20-pack of CD+R that are supposedly also > lightscribe capable. I have tried both the LaCie 4L s/w and > lightscribeApplications-1.18.6.1-0 and get nowhere with either of them. > I do have the driver, lightscribe-1.18.11.1-0 installed. > > After leaving the original question, I plugged the drive into a > WinXP-only laptop, Installed the bundled s/w and the same DVD was > recognized -- but only after quite a while. So, I'm about to conclude > that the media is flaky, the Linux s/w is impatient at best, broken at > worst. Whatever... I didn't throw away my CD marker. > I'd check with HP - they're pretty good about Linux support for their printers, so you might have some luck for this, too. I'm kind of surprised at this, too, though - lightscribe is no longer a new technology, and I would think by now that RH would include it, or have drivers for it, in the more recent releases (4 maybe, 5 for sure). Also, check some of the linux forums on the subject - you might find something else that works. I was looking for this a couple of years ago, but I never saw the value of lightscribe over labels, which can be printed on inkjet or lasers, in full colr, and "stomped" onto most CDs/DVDs with little or no trouble. (I've had to glue some down, but they work just fine.) HTH mhr ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone using Active Driectory auth with Centos 5.4.....?
I just need something for apache auth. I have winbind working just
fine for the other stuff...Thanks
On 2/9/10, Jay Leafey wrote:
> If you are using AD for JUST authentication and not user information,
> you can use the PAM Kerberos stuff. We've been using it for a couple of
> years from both CentOS/RHEL 4 and 5 systems with good results. It was
> actually pretty easy to do (once we figured out which type of chicken
> bones to burn).
>
> You can use authconfig to turn it all on:
>
> authconfig --enablekrb5 --krb5realm {AD domain name} \
> --enbablekrb5kdcdns --enablekrb5realmdns --update
>
> This will use DNS to locate the domain controller and KDC for the domain
> given the AD domain name. You can manually specify the KDC and admin
> servers too, see the authconfig man page for specific details.
>
> If you want something perhaps more polished, you could look into the
> Likewise products, which handle the whole shooting match pretty well
> (http://www.likewise.com/products/likewise_open/). I've played with the
> Open (free) version and it worked just fine, the Enterprise has more
> features but I haven't played with it.
>
> As always, YMMV.
> --
> Jay Leafey - Memphis, TN
> jay.lea...@mindless.com
>
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Re: [CentOS] Anyone using Active Driectory auth with Centos 5.4.....?
If you are using AD for JUST authentication and not user information,
you can use the PAM Kerberos stuff. We've been using it for a couple of
years from both CentOS/RHEL 4 and 5 systems with good results. It was
actually pretty easy to do (once we figured out which type of chicken
bones to burn).
You can use authconfig to turn it all on:
authconfig --enablekrb5 --krb5realm {AD domain name} \
--enbablekrb5kdcdns --enablekrb5realmdns --update
This will use DNS to locate the domain controller and KDC for the domain
given the AD domain name. You can manually specify the KDC and admin
servers too, see the authconfig man page for specific details.
If you want something perhaps more polished, you could look into the
Likewise products, which handle the whole shooting match pretty well
(http://www.likewise.com/products/likewise_open/). I've played with the
Open (free) version and it worked just fine, the Enterprise has more
features but I haven't played with it.
As always, YMMV.
--
Jay Leafey - Memphis, TN
jay.lea...@mindless.com
smime.p7s
Description: S/MIME Cryptographic Signature
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Re: [CentOS] CentOS 5.4 x86_64 authenticating against AD (Server 2008r2)
From: centos-boun...@centos.org [centos-boun...@centos.org] On Behalf Of Ross Walker [rswwal...@gmail.com] Sent: Tuesday, February 09, 2010 4:08 PM To: CentOS mailing list Subject: Re: [CentOS] CentOS 5.4 x86_64 authenticating against AD (Server 2008r2) On Tue, Feb 9, 2010 at 3:23 PM, Joseph L. Casale wrote: >>That RID map feature of samba is great. > > Forgot about that, AFAIK, you can do that w/ SFU & pam mods. > > I have two Samba servers left that I want to get rid of:) You can do it with SFU, but SFU doesn't create UID/GIDs for existing users, you have to do those manually. Then there is the whole issue of maintaining those IDs over a long period of time. Also with RID mapping I can map different domains into different ID ranges. 10 - 19 first domain 20 - 29 second domain And so on. You know you don't need the full Samba install to setup a winbind->NIS server, just the Samba client will do. Then have your Linux boxes using NIS+Kerberos and only 1-2 boxes needs have a smb.conf and winbind running. NIS is only as secure as the network it runs on. If it bumps against public networks (unsecure wifi so on) use 802.11 authentication. -Ross ___ For anybody wanting to know how to go the LDAP Route I found an interesting article in the linux.com archives http://www.linux.com/archive/feed/40983 Thanks again guys for your input. Dan ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] disk I/O problems with LSI Logic RAID controller
On Tue, Feb 9, 2010 at 4:33 PM, Fernando Gleiser wrote: > - Original Message > >> From: nate >> >> Not sure I know what the issue is but telling us how many disks, >> what the RPM of the disks are, and what level of RAID would probably >> help. >> >> It sounds like perhaps you have a bunch of 7200RPM disks in a RAID >> setup where the data:parity ratio may be way out of whack(e.g. high >> number of data disks to parity disks), which will result in very >> poor write performance. > > > yes, ita bunch of 12 7k2 RPM disks organized as 1 hot spare, 2 parity > disks, 9 data disks in a RAID 5 configuration. is 9/2 a "high ratio"? A bit. Your RAID array is configured for a read-mostly configuration. Here is a simple rule, given you have a HW RAID controller with write-back cache, assume each write will span the whole stripe width (controller tries to cache full stripe writes), if that is the case then the write IOPS will be equal to the IOPS of your slowest disk within the set as the next write can't go until the first write has finished. Of course with RAID5/RAID6 the write performance can be much, much worse if the write is short of the whole stripe width as it will then have to read the remaining stripe set (in order to caclulate parity), then write the whole stripe set out. It sounds like your data is sequential though so this shouldn't happen much, maybe the first or last stripes, so using the above simple rule is a good guide. For software RAID5/RAID6 that doesn't have a write-cache to cache the stripe-width, make sure the file system knows the stripe width and hope it does the write thing :) -Ross ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.4 x86_64 authenticating against AD (Server 2008r2)
On Tue, Feb 9, 2010 at 3:23 PM, Joseph L. Casale wrote: >>That RID map feature of samba is great. > > Forgot about that, AFAIK, you can do that w/ SFU & pam mods. > > I have two Samba servers left that I want to get rid of:) You can do it with SFU, but SFU doesn't create UID/GIDs for existing users, you have to do those manually. Then there is the whole issue of maintaining those IDs over a long period of time. Also with RID mapping I can map different domains into different ID ranges. 10 - 19 first domain 20 - 29 second domain And so on. You know you don't need the full Samba install to setup a winbind->NIS server, just the Samba client will do. Then have your Linux boxes using NIS+Kerberos and only 1-2 boxes needs have a smb.conf and winbind running. NIS is only as secure as the network it runs on. If it bumps against public networks (unsecure wifi so on) use 802.11 authentication. -Ross ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] disk I/O problems with LSI Logic RAID controller
nate wrote: > Perhaps RAID 6, as I've never heard of RAID 5 with two parity (two > parity is dual parity which is RAID 6). Forgot to mention my own personal preference on my high end SAN at least is for RAID 5 with a 3:1 parity ratio, or a max of 5:1 or 6:1, really never higher than that unless activity is very low. The RAID controllers on my array are the fastest in the industry, and despite that, in the near future I am migrating to a parity ratio of 2:1 to get (even)better performance, that brings me to within about 3-4% of RAID 1+0 performance for typical workloads. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] disk I/O problems with LSI Logic RAID controller
Fernando Gleiser wrote: > yes, ita bunch of 12 7k2 RPM disks organized as 1 hot spare, 2 parity disks, > 9 data disks in a RAID 5 configuration. is 9/2 a "high ratio"? Perhaps RAID 6, as I've never heard of RAID 5 with two parity (two parity is dual parity which is RAID 6). RAID 6 performance can vary dramatically between controllers, if it were me unless you get any other responses shortly I would test other RAID configurations and see how the performance compares RAID 1+0 RAID 5+0 (striped RAID 5 arrays, in your case perhaps 3+1 * 4 w/no hot spares? at least for testing) RAID 5+0 (5+1 * 2) RAID 1+0 should be first though, even if you don't end up using it in the end, it's good to get a baseline with the fastest configuration. I would expect the RAID card to support RAID 50, but not all do, if it doesn't one option may be to perform striping using LVM at the OS level. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone using Active Driectory auth with Centos 5.4.....?
>seems to me that permitting an anonymous bind to LDAP is inherently more >secure than requiring a user/password combination so I don't think that >your explanation is exactly true. There are ways to create accounts just for this with reduced privileges. Research technet... >In Microsoft's view, the only systems querying LDAP would be systems >automatically passing the authentication. Wow, someone actually hacking on MS for expecting us to do things secure? What will they expect next:) If they didn't and by default allowed anon binds, "someone" would surely say "Microsoft sucks, they don't expect us to do this securely, blah blah". The topic is mute, lets save the list the despair of rehashing the severely hashed. From the point of view of some, MS will always suck. Changing the minds of that type of person isn't my interest, I was merely pointing out some facts surrounding the implementation of the topic at hand. Sorry for disagreeing with you:) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] disk I/O problems with LSI Logic RAID controller
- Original Message > From: nate > > Not sure I know what the issue is but telling us how many disks, > what the RPM of the disks are, and what level of RAID would probably > help. > > It sounds like perhaps you have a bunch of 7200RPM disks in a RAID > setup where the data:parity ratio may be way out of whack(e.g. high > number of data disks to parity disks), which will result in very > poor write performance. yes, ita bunch of 12 7k2 RPM disks organized as 1 hot spare, 2 parity disks, 9 data disks in a RAID 5 configuration. is 9/2 a "high ratio"? Thanks for your help Fer ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] best parallel / cluster SSH
> I mean if you go from supplying perl and some perl-scripted functionality, you > either have to drop the functionality or some engineer has to rewrite the code > in a different language - something that usually isn't cheap. I've never > tried > perl2c - if such a thing exists it probably embeds most of perl as a library. The few things we needed we rewrote in BASH - it was pretty easy (I did most of it) -- “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] Anyone using Active Driectory auth with Centos 5.4.....?
On Tue, 2010-02-09 at 18:08 +, Joseph L. Casale wrote: > >This looks like the way to go, I don't like the username /pass stored in > >plain text but maybe if I create a special group that doesn't really have > >any privileges this would work, geez AD is just plain bad...lol, Thanks. > > I guess you think insecure would be better? If I understand your need, you > want > to make AD insecure, so please enable anonymous binds so you don't need a > user/pass > to make the query:) > > Or program your own auth backend that binds with the intended creds asking > for auth:) > Oh, and do this w/o tls/ssl because you want it insecure:) seems to me that permitting an anonymous bind to LDAP is inherently more secure than requiring a user/password combination so I don't think that your explanation is exactly true. In Microsoft's view, the only systems querying LDAP would be systems automatically passing the authentication. Craig -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Lightscribe
Arun Khan wrote: > On Sun, Feb 7, 2010 at 5:35 AM, Robert wrote: > >> I just bought an HP DVD Writer 1040r (as identified by k3b), an external >> USB-connected CD/DVD burner. The drive gets assigned /dev/scd0. I can >> burn CDs and DVDs, read from CDs and DVDs, boot from DVDs (and, I >> assume, CDs) but have been unable to use the lightscribe software to >> label a disk. I have lightscribe-1.18.11.1-0 and >> lightscribeApplications-1.18.6.1-0 installed, can run the GUI at >> /opt/lightscribe/Applications/SimpleLabeler/SimpleLabeler which promptly >> and stubbornly tells me "". >> This IS a lightscribe drive, according to the specs, the box and the >> logo on the tray. >> > I do not have any lightscribe capable DVD writer. > > I am presuming you have lightscribe capable media in the drive as > well. If so, it might be worthwhile to contact the software vendor. > IIRC, LaCie had published rpm package for lightscribe but I suspect it > worked with their own branded hardware. > > -- Arun Khan > Yes, I have tried DVD media that is peddled as being lightscribe capable and just minutes ago, opened a 20-pack of CD+R that are supposedly also lightscribe capable. I have tried both the LaCie 4L s/w and lightscribeApplications-1.18.6.1-0 and get nowhere with either of them. I do have the driver, lightscribe-1.18.11.1-0 installed. After leaving the original question, I plugged the drive into a WinXP-only laptop, Installed the bundled s/w and the same DVD was recognized -- but only after quite a while. So, I'm about to conclude that the media is flaky, the Linux s/w is impatient at best, broken at worst. Whatever... I didn't throw away my CD marker. Thanks for the reply ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] xentop batch mode
On Tue, Feb 9, 2010 at 8:50 AM, Pasi Kärkkäinen wrote: > On Tue, Feb 09, 2010 at 04:06:37AM +0200, Nux wrote: >> Hi guys, >> First of all, sorry to send this one here on the centos ml. I know it's kind >> of off-topic, but the xen-users list seems a dead end, I was hoping some of >> you guys are experienced in this. >> >> I have a problem with a xen 3.4.2 on Centos 5 x86_64 installation, I need to >> see the total/used/available memory of dom0 when using xentop, however in >> batch mode it doesn't seem to work. >> If I use the normal mode of xentop I get all that info nicely, however in >> batch mode it looks like this: >> http://bayimg.com/mAkNEAace >> >> A friend of mine told me that the memory info I need gets displayed on >> Centos 5 stock xen versions when running xentop in batch mode. >> Anyone can tell me what is going on? What am I missing? Is there any other >> way I can obtain that info? >> >> The xen is installed from gitco.de/repo/, should it matter. The kernel is >> 2.6.18-164. >> > > For me the output from batch-mode and non-batch-mode is the same, using stock > centos5 xen. > > Why do you need to know that information? You can get the Xen hypervisor > memory stats from "xm info", > and you should always dedicate a fixed amount of memory for dom0 anyway > (disable dom0 ballooning). > > http://wiki.xensource.com/xenwiki/XenBestPractices > > -- Pasi > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > Dooh, thanks for the xm info thing. I was too dumb last night to actually think of that. Also I completely agree with disabling dom0 ballooning and it's how I run all my servers. Thanks again, Lucian ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.4 x86_64 authenticating against AD (Server 2008r2)
>That RID map feature of samba is great. Forgot about that, AFAIK, you can do that w/ SFU & pam mods. I have two Samba servers left that I want to get rid of:) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.4 x86_64 authenticating against AD (Server 2008r2)
On Sun, Feb 7, 2010 at 8:29 PM, Christopher Chan wrote: > >>> Take my advice: >>> yum erase samba == uber happiness >>> >>> Get ldap working, no interop issues with the old samba version in rhel and >>> newer ms servers. Plus you will be using something forward compatible that >>> a txt edit could likely fix in the event something drastic changed in the >>> schema and search filters for example had to change. >> >> +1 >> >> We've been using nss_ldap against AD for years. It's never a problem. >> >> >> Version 3.4.5 of Samba did end up resolving the issue I was having and now >> AD users can login to the box. I am however interested in going the LDAP >> route mainly for the forward compatability reason stated by Jeff. Is there >> anything special I need to do on the DC for the LDAP authentication to work? >> > > Do we lose kerberos security if one switches from samba + winbind to ldap? No, but you'll have to generate UIDs and GIDs for all AD users and groups That is the one thing that has stopped me from using AD LDAP for user/group management. You could use winbind to create a NIS map (sans passwords) and have Linux/Mac clients authenticate with NIS+Kerberos. That RID map feature of samba is great. -Ross ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone using Active Driectory auth with Centos 5.4.....?
Point taken and I do understand, in reality I would rather have nothing to do with MS which is insecure from the start, ever try to firewall an SBS 2003 install, good luck, they recommend turning it off, go figurelol On Tue, Feb 9, 2010 at 12:08 PM, Joseph L. Casale wrote: > >This looks like the way to go, I don't like the username /pass stored in > plain text but maybe if I create a special group that doesn't really have > any privileges this would work, geez AD is just plain bad...lol, Thanks. > > I guess you think insecure would be better? If I understand your need, you > want > to make AD insecure, so please enable anonymous binds so you don't need a > user/pass > to make the query:) > > Or program your own auth backend that binds with the intended creds asking > for auth:) > Oh, and do this w/o tls/ssl because you want it insecure:) > ___ > 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] Anyone using Active Driectory auth with Centos 5.4.....?
>This looks like the way to go, I don't like the username /pass stored in plain >text but maybe if I create a special group that doesn't really have any >privileges this would work, geez AD is just plain bad...lol, Thanks. I guess you think insecure would be better? If I understand your need, you want to make AD insecure, so please enable anonymous binds so you don't need a user/pass to make the query:) Or program your own auth backend that binds with the intended creds asking for auth:) Oh, and do this w/o tls/ssl because you want it insecure:) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] disk I/O problems with LSI Logic RAID controller
Fernando Gleiser wrote: > we're having a weird disk I/O problem on a 5.4 server connected to an > external SAS storage with an LSI logic megaraid sas 1078. Not sure I know what the issue is but telling us how many disks, what the RPM of the disks are, and what level of RAID would probably help. It sounds like perhaps you have a bunch of 7200RPM disks in a RAID setup where the data:parity ratio may be way out of whack(e.g. high number of data disks to parity disks), which will result in very poor write performance. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone using Active Driectory auth with Centos 5.4.....?
This looks like the way to go, I don't like the username /pass stored in plain text but maybe if I create a special group that doesn't really have any privileges this would work, geez AD is just plain bad...lol, Thanks. On Tue, Feb 9, 2010 at 10:57 AM, Pat and Lori Boyer wrote: > I've had decent luck with LDAP authentication for Apache. AD does not > support anonymous LDAP searches so you have to have a user account that has > the ability to search AD. Here's a modified sample config (.htaccess or > httpd.conf) that includes security group membership checks. This would > require that a user login with their Windows domain username and password > and that the user be a member of the AD security group 'managers': > > AuthType basic > AuthName "Windows Domain Credentials - Managers Only" > AuthzLDAPMethod ldap > AuthzLDAPServer "dc1.example.com" > AuthzLDAPBindDN "CN=username,CN=Users,DC=example,DC=com" > AuthzLDAPBindPassword "superSecretPassword" > AuthzLDAPUserBase "CN=Users,DC=example,DC=com" > AuthzLDAPUserKey sAMAccountName > AuthzLDAPUserScopesubtree > AuthzLDAPGroupBase"CN=Users,DC=example,DC=com" > AuthzLDAPGroupKey cn > AuthzLDAPGroupScope subtree > AuthzLDAPMemberKeymember > AuthzLDAPSetGroupAuth ldapdn > require group managers > > > > > On Tue, Feb 9, 2010 at 11:35 AM, Tom Bishop wrote: > >> I looked over an most of which I have already done, the last piece that I >> am trying to address is how to do authentication with Apache against active >> directory, mod_auth_pam is one way but I have not had any luck getting it to >> compile with the latest ApacheThanks >> >> >> On Mon, Feb 8, 2010 at 6:49 PM, Arvind P R wrote: >> >>> I had written a blog quite some time back on this. There might be some >>> glitches in it, but will give you some clue. The blog is >>> blog.Palalinha.Com >>> i am sitting at the airport with my mobile so cant find you the >>> correct thread in the blog. Let me know if it helps. >>> >>> On 2/8/10, Tom Bishop wrote: >>> > Setting up a new backuppc for a small group of device and I am running >>> > centos 5.4 with winbind setup and working. Everything is working and I >>> > would like the users to authenicate using their AD creds and was >>> wondering >>> > what folks are using to do that with apache 2.2 and centos 5.4. I know >>> > about mod_auth_pam but that seems pretty dead so I was just wondering >>> what >>> > folks were using and whats the easiest to setup. Any pointers to any >>> how >>> > to's would be appreciated...Thanks. >>> > >>> ___ >>> 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 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] disk I/O problems with LSI Logic RAID controller
we're having a weird disk I/O problem on a 5.4 server connected to an external SAS storage with an LSI logic megaraid sas 1078. The server is used as a samba file server. Every time we try to copy some large file to the storage-based file system, the disk utilization see-saws up to 100% to several seconds of inactivity, to climb up again to 100% and so forth. Here are a snip from the iostat -kx 1: Device: rrqm/s wrqm/s r/s w/srkB/swkB/s avgrq-sz avgqu-sz await svctm %util sdb1 0.00 133811.00 0.00 1889.00 0.00 513660.00 543.84 126.24 65.00 0.47 89.40 sdb1 0.00 138.61 0.00 109.90 0.00 29845.54 543.14 2.54 54.32 0.37 4.06 sdb1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdb1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdb1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdb1 0.00 134680.00 0.00 1920.00 0.00 526524.00 548.46 126.06 64.57 0.47 90.00 sdb1 0.00 142.00 0.00 74.00 0.00 20740.00 560.54 1.25 45.14 0.47 3.50 sdb1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdb1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdb1 0.00 0.00 1.00 0.00 4.00 0.00 8.00 0.01 14.00 14.00 1.40 sdb1 0.00 116129.00 1.00 1576.00 4.00 434816.00 551.45 125.47 75.38 0.57 90.30 sdb1 0.00 17301.98 0.00 412.87 0.00 106506.93 515.93 24.59 75.40 0.48 19.80 sdb1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdb1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdb1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 It happens when I copy a file over the net using samba or when copying/creating a local file It looks like the disk tries to get more than it can handle, then it chokes with data and stales for a few seconds until some buffer empties and it's able to get a bit more data again. It happens in two identical servers, so I'd discard faulty hardware as the cause and look into a miscofiguration issue. Are there any guidelines/docs for heavy I/O tuning? are there any issues with this raid controller? any help will be apreciated Fer ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone using Active Driectory auth with Centos 5.4.....?
I've had decent luck with LDAP authentication for Apache. AD does not support anonymous LDAP searches so you have to have a user account that has the ability to search AD. Here's a modified sample config (.htaccess or httpd.conf) that includes security group membership checks. This would require that a user login with their Windows domain username and password and that the user be a member of the AD security group 'managers': AuthType basic AuthName "Windows Domain Credentials - Managers Only" AuthzLDAPMethod ldap AuthzLDAPServer "dc1.example.com" AuthzLDAPBindDN "CN=username,CN=Users,DC=example,DC=com" AuthzLDAPBindPassword "superSecretPassword" AuthzLDAPUserBase "CN=Users,DC=example,DC=com" AuthzLDAPUserKey sAMAccountName AuthzLDAPUserScopesubtree AuthzLDAPGroupBase"CN=Users,DC=example,DC=com" AuthzLDAPGroupKey cn AuthzLDAPGroupScope subtree AuthzLDAPMemberKeymember AuthzLDAPSetGroupAuth ldapdn require group managers On Tue, Feb 9, 2010 at 11:35 AM, Tom Bishop wrote: > I looked over an most of which I have already done, the last piece that I > am trying to address is how to do authentication with Apache against active > directory, mod_auth_pam is one way but I have not had any luck getting it to > compile with the latest ApacheThanks > > > On Mon, Feb 8, 2010 at 6:49 PM, Arvind P R wrote: > >> I had written a blog quite some time back on this. There might be some >> glitches in it, but will give you some clue. The blog is >> blog.Palalinha.Com >> i am sitting at the airport with my mobile so cant find you the >> correct thread in the blog. Let me know if it helps. >> >> On 2/8/10, Tom Bishop wrote: >> > Setting up a new backuppc for a small group of device and I am running >> > centos 5.4 with winbind setup and working. Everything is working and I >> > would like the users to authenicate using their AD creds and was >> wondering >> > what folks are using to do that with apache 2.2 and centos 5.4. I know >> > about mod_auth_pam but that seems pretty dead so I was just wondering >> what >> > folks were using and whats the easiest to setup. Any pointers to any >> how >> > to's would be appreciated...Thanks. >> > >> ___ >> 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 mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone using Active Driectory auth with Centos 5.4.....?
I looked over an most of which I have already done, the last piece that I am trying to address is how to do authentication with Apache against active directory, mod_auth_pam is one way but I have not had any luck getting it to compile with the latest ApacheThanks On Mon, Feb 8, 2010 at 6:49 PM, Arvind P R wrote: > I had written a blog quite some time back on this. There might be some > glitches in it, but will give you some clue. The blog is > blog.Palalinha.Com > i am sitting at the airport with my mobile so cant find you the > correct thread in the blog. Let me know if it helps. > > On 2/8/10, Tom Bishop wrote: > > Setting up a new backuppc for a small group of device and I am running > > centos 5.4 with winbind setup and working. Everything is working and I > > would like the users to authenicate using their AD creds and was > wondering > > what folks are using to do that with apache 2.2 and centos 5.4. I know > > about mod_auth_pam but that seems pretty dead so I was just wondering > what > > folks were using and whats the easiest to setup. Any pointers to any how > > to's would be appreciated...Thanks. > > > ___ > 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] Using (was: Announcing) Gluster Storage Platform
On Wed, Dec 16, 2009 at 6:13 PM, Les Mikesell wrote: > Chan Chung Hang Christopher wrote: > > Alan McKay wrote: > >> On Tue, Dec 15, 2009 at 7:48 PM, Christopher Chan > >> wrote: > >>> A cluster filesystem > >> OK, but you've just given me a circular definition. > >> > >>> When you do not need/want a cluster file system > >> and again ... > >> > > > > Okay, a cluster/distributed file system that does not have its own on > > disk format. It makes use of whatever existing filesystem there is for > > actual storage and allows you to replicate files/load balance requests > > to files to 'storage servers' of any supported platform. > > > > At the same time, user level processes on 'clients' access the system as > > if it was an actual file system. > > > > This enables one to have Linux clients that run say samba to export the > > files to Windows clients but the actual files are kept on OpenSolaris > > servers on zfs. Should the Linux clients all go down, the Windows > > clients could still access the files on the OpenSolaris servers via > samba. > > I'm having trouble finding any real information about how (and how well) > this works and I'd like to know if it would be suitable for a backuppc > storage archive which generates millions of hardlinks. Does it deal > with hardlinks spanning backend storage servers transparently? And can > it replicate efficiently enough to have remote copies? > > -- > Les Mikesell >lesmikes...@gmail.com > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > Has anyone implemented, or used GlusterFS yet? What is your viewpoint on it? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] strange disk error
On Feb 9, 2010, at 7:55 AM, Алексей wrote: > Hi everyone . > > Recently I had a strange error on one of my servers ,running Centos > 5.4 > 64bit > > FAILED > kernel: status = 1, message = 00, host = 0, driver = 08 > kernel: <6>sd: Current: sense key: Illegal Request > kernel: Add. Sense: Logical block address out of range > > > *Should i be worried sick about it or is it normal??* > > > *There are 2 sas hdd connected into raid 1 to Adaptec AIC-9410W SAS > controller. > I can't get any information about my drives health (no S.M.A.R.T > there) and to get information about raid quality i must restart > system and enter raid bios- which is not very good option > > > And maybe someone knows how to get health information om my raid > \hdd from Centos ? > > > P.S. error happened about 20 times for the last 2 days and I am > worried The illegal request error means something on the system tried to issue a SCSI command that isn't supported on the controller. Probably smartmon. Try excluding those drives from smartmon and see if Adaptec has a Linux monitoring tool for that card. -Ross ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] strange disk error
Алексей wrote: > Hi everyone . > > Recently I had a strange error on one of my servers ,running Centos 5.4 > 64bit > > FAILED > kernel: status = 1, message = 00, host = 0, driver = 08 > kernel: <6>sd: Current: sense key: Illegal Request > kernel: Add. Sense: Logical block address out of range > > > *Should i be worried sick about it or is it normal??* > > > *There are 2 sas hdd connected into raid 1 to Adaptec AIC-9410W SAS > controller. > I can't get any information about my drives health (no S.M.A.R.T there) and > to get information about raid quality i must restart system and enter raid > bios- which is not very good option > > > And maybe someone knows how to get health information om my raid\hdd from > Centos ? > > > P.S. error happened about 20 times for the last 2 days and I am worried Does 'dmesg' give a better description? I frequently see messages like that associated with empty CD/DVD drives - not sure what tries to access them. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] strange disk error
Hi everyone . Recently I had a strange error on one of my servers ,running Centos 5.4 64bit FAILED kernel: status = 1, message = 00, host = 0, driver = 08 kernel: <6>sd: Current: sense key: Illegal Request kernel: Add. Sense: Logical block address out of range *Should i be worried sick about it or is it normal??* *There are 2 sas hdd connected into raid 1 to Adaptec AIC-9410W SAS controller. I can't get any information about my drives health (no S.M.A.R.T there) and to get information about raid quality i must restart system and enter raid bios- which is not very good option And maybe someone knows how to get health information om my raid\hdd from Centos ? P.S. error happened about 20 times for the last 2 days and I am worried Best wishes, Alexey Galishnikov * __ Information from ESET Smart Security, version of virus signature database 4850 (20100209) __ The message was checked by ESET Smart Security. http://www.esetnod32.ru ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Asus Xonar DX PCIe sound card?
Can anyone here report success or failure at making the Asus Xonar DX PCI-express sound card work under CentOS 4? Or failing that, 5? Google only turned up people using it on Ubunt or SuSE... I need to specify the addition of audio outputs to a HP DL360 system, and don't want to buy stuff that will be a pain to get working. :-) Or can anyone recommend any other simple sound cards for PCI-express that have been trouble-free under CentOS 4 or 5? Cheers Tony -- Tony Mountifield Work: t...@softins.co.uk - http://www.softins.co.uk Play: t...@mountifield.org - http://tony.mountifield.org ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to backup virtual machines fromCitrix XenServer.
If the goal is to backup the VMs rather than the Citrix XenServer Dom0, I find that exporting each VM to a shared disk (NFS, iSCSI, whatever) is the easiest solution. If you need zero-downtime, then make a snapshot of the VM and then export it. I did this specifically for the purpose of disaster recovery. Recovering individual files or datasets from within a VM is also possible but is slightly more of a hassle. I have some scripts that do this that I'm willing to share. BTW... Centos and Citrix XenServer are different enough that these kinds of questions should probably be asked on the XenSource mailing list or the Citrix forums. You can get potentially misleading advice otherwise. -geoff - Geoff Galitz Blankenheim NRW, Germany http://www.galitz.org/ http://german-way.com/blog/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to backup virtual machines from Citrix XenServer.
Pasi Kärkkäinen sent a missive on 2010-02-09: > On Mon, Feb 08, 2010 at 12:07:30PM -0800, nate wrote: >> Simon Billis wrote: >> >>> Good quality storage (which usually comes at a price) will provide the >>> functionality that is needed to backup the VM's either as a complete >>> VM image or files from the VM filesystem. Entry level storage from >>> suppliers such as Equallogic/Dell comes with this functionality and it >>> is possible to have the storage up and attached to servers within 10 >>> mins from un-boxing it (but do allow a little longer to understand it >>> ;-) .) >> >> Suggest reading this interesting piece "3 years of equallogic" >> before thinking about using it's snapshot stuff - >> >> http://www.tuxyturvy.com/blog/index.php?/archives/61-Three-Years-of- Eq >> uallogic.html >> >> Of course not all snapshot solutions are created equal, equallogic's >> appears to be especially poor in this regard. >> > > I think that blog post gives too negative view of the EQL snapshots. > They work very well for many use cases. Having a lot of random small > writes all over the volume seems to cause a lot of wasted disk space > though. I agree - I'm not suggesting that the EQL box is the best thing since sliced bread, but it does what it says on the tin. There are better/different arrays and array controllers out there (3par, BlueArc, Pillar, EMC, Hitachi etc., etc., etc.,) and depending on your needs and budget both now and in the future and it would be wise to select the one that provides the best fit for you and your business. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] xentop batch mode
On Tue, Feb 09, 2010 at 04:06:37AM +0200, Nux wrote: > Hi guys, > First of all, sorry to send this one here on the centos ml. I know it's kind > of off-topic, but the xen-users list seems a dead end, I was hoping some of > you guys are experienced in this. > > I have a problem with a xen 3.4.2 on Centos 5 x86_64 installation, I need to > see the total/used/available memory of dom0 when using xentop, however in > batch mode it doesn't seem to work. > If I use the normal mode of xentop I get all that info nicely, however in > batch mode it looks like this: > http://bayimg.com/mAkNEAace > > A friend of mine told me that the memory info I need gets displayed on Centos > 5 stock xen versions when running xentop in batch mode. > Anyone can tell me what is going on? What am I missing? Is there any other > way I can obtain that info? > > The xen is installed from gitco.de/repo/, should it matter. The kernel is > 2.6.18-164. > For me the output from batch-mode and non-batch-mode is the same, using stock centos5 xen. Why do you need to know that information? You can get the Xen hypervisor memory stats from "xm info", and you should always dedicate a fixed amount of memory for dom0 anyway (disable dom0 ballooning). http://wiki.xensource.com/xenwiki/XenBestPractices -- Pasi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to backup virtual machines from Citrix XenServer.
On Mon, Feb 08, 2010 at 12:07:30PM -0800, nate wrote: > Simon Billis wrote: > > > Good quality storage (which usually comes at a price) will provide the > > functionality that is needed to backup the VM's either as a complete VM > > image or files from the VM filesystem. Entry level storage from suppliers > > such as Equallogic/Dell comes with this functionality and it is possible to > > have the storage up and attached to servers within 10 mins from un-boxing it > > (but do allow a little longer to understand it ;-) .) > > Suggest reading this interesting piece "3 years of equallogic" before > thinking about using it's snapshot stuff - > > http://www.tuxyturvy.com/blog/index.php?/archives/61-Three-Years-of-Equallogic.html > > Of course not all snapshot solutions are created equal, equallogic's > appears to be especially poor in this regard. > I think that blog post gives too negative view of the EQL snapshots. They work very well for many use cases. Having a lot of random small writes all over the volume seems to cause a lot of wasted disk space though. -- Pasi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
