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Re: [CentOS] OT: Suggestions for RAID HW for 2 SATA drives in DellPowerEdge SC
by Lanny Marcus 31 Aug '07

31 Aug '07

On 31 August 2007, Feizhou <feizhou(a)graffiti.net> wrote: > Message: 77 <snip> > Whoa there! > > Hardware raid + battery backed up memory cache in raid 1,10 mode is > hard to beat with software raid and hardware raid offers data > integrity guarantee beyond software raid. > > If you were planning a huge array especially a raid5 array, then > software raid may be better. Hardware RAID cards all come with memory > caches now so their throughput is no longer limited. > > Another route you can go is getting a PCI/PCIe/PCI-X BBU RAM/NVRAM > card to put an external journal on to speed up fsync performance for > filesystems like ext3 over software raid since these cards can go > beyond 1GB of memory unlike hardware raid cards that usually max out > at 256MB. > > Software RAID is also good if you need to be able to transfer the > disks to another box that does not have a hardware raid controller or > the same controller. > Feizhou: THANK YOU! What you wrote is *extremely* helpful (and educational) for me! MUCH appreciated! Lanny

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Re: delay after wrong password
by edf＠riskproof.no-ip.org 31 Aug '07

31 Aug '07

> Hi list > > If a user connect by Console or OpenSSH and type in the wrong > password, I wish to delay the next password prompt. Use case is for > example brute force attacks. > > I played with FAIL_DELAY in login.defs, but without success. > > cheers > Simon > > -- > XMPP: sjolle(a)swissjabber.org try using the PAM method.. http://www.kernel.org/pub/linux/libs/pam/Linux-PAM-html/sag-pam_faildelay.h… wfm.. ymmv ed

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Re: CentOS Digest, Vol 31, Issue 31
by Rohit Rai 31 Aug '07

31 Aug '07

---------- Forwarded message ---------- From: Phil Schaffner <Philip.R.Schaffner(a)NASA.gov> To: CentOS mailing list <centos(a)centos.org> Date: Thu, 30 Aug 2007 10:57:18 -0400 Subject: Re: [CentOS] NFS Question and answers On Thu, 2007-08-30 at 18:38 +0530, Rohit Rai wrote: > HI! Friends, > > in followup to my last article regarding my experiences with setting > up CentOS, > taking the advice from Phil, I have written an article dealing with > NFS setup. > > Please visit it at > http://mytechrantings.blogspot.com/2007/08/nfs-network-file-system.html > > The article format is in "Questions and Answers" which I chose so that > It can be a increase Knowledge Base . . . > > Please see to it and tell me what do you think about this format... > And leave any questions in the comment that I might have missed... > And ofcourse you are welcome to put in your thoughts and knowledge in > the topic there :D > > I am planning to write more artciles in this series, already working > on them, one is on YUM setups for LANs and another one is on XEN and > Virt manager. But before I proceed I want to know about the format... > will this Q&A format be appealing enough??? > > Kind Regards, > Rohit Rai I still think joining http://lists.centos.org/mailman/listinfo/centos-docs and contributing to the Wiki would better serve this audience. > -- > I am careful not to confuse excellence with perfection. > Excellence, I can reach for; perfection is God's business. > - Michael J. Fox An excellent start. With regard to firewalls, a simpler if less-secure approach it to open the firewall to trusted machines on the local net. Might want to address the "insecure" parameter in /etc/exports for those using NAT. Fixing a few typos ("variou configuration" "But bere is") would take you a bit further down the road in an asymptotic approach toward perfection. :-) Regards, Phil Hi! Phil, I joined in the list and am waiting for the first digest to get a feel of it. I somehow just felt that making the article over my blog and then once I feel it is complete, submitting it to the documentation will be much easier for me to keep a track of things. Generally I tend to miss out quite a few mails in these lists... :( Thanks for the correntions. Also I have added a long list of options that are available for use in /etc/exports. I am not sure how insecure affects NAT users. I am no Linux guru, though I have been using it since 6-7 years now, I am much more a enthusiast than a pro... That is one reason I am interested in getting sufficient and right document in place. Though we have lot of document it is very scattered, so I am playing my part as much as I can to get a consolidated documentation in CentOS and Fedora. Kind regards, Rohit

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controlling module load order
by Jerry Geis 31 Aug '07

31 Aug '07

Is there a method to control module load order? I want to ensure that the e1000 module loads before the forcedeth driver. Jerry

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Package Tracking System
by Server Gremlin 31 Aug '07

31 Aug '07

Hello CentOS users, Is there any sort of package tracking system for CentOS? I'm used to Debian where I can view a changelog for each *Debian* specific package. This is great because I can see specifically what has been fixed and what known issues remain from release to release in the Debian package, which is subtly different from the upstream release. For instance, I can see what's changed from "apache2.1-debian.deb" to "apache2.2-debian.deb" by using the Debian Package Tracking System. (I'm fudging the package names, but you get the idea). Is there anything like that in CentOS? Thanks, - SG

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CentOS-announce Digest, Vol 30, Issue 10
by centos-announce-request＠centos.org 31 Aug '07

31 Aug '07

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2007:0875 Important CentOS 4 ia64 mysql - security update (Pasi Pirhonen) 2. CESA-2007:0875 Important CentOS 5 i386 mysql Update (Karanbir Singh) 3. CESA-2007:0875 Important CentOS 5 x86_64 mysql Update (Karanbir Singh) 4. CESA-2007:0875 Important CentOS 4 s390(x) mysql - security update (Pasi Pirhonen) ---------------------------------------------------------------------- Message: 1 Date: Thu, 30 Aug 2007 21:26:18 +0300 From: Pasi Pirhonen <upi(a)centos.fi> Subject: [CentOS-announce] CESA-2007:0875 Important CentOS 4 ia64 mysql - security update To: centos-announce(a)centos.org Message-ID: <20070830182618.GK14462(a)centos.fi> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory 2007:0875 https://rhn.redhat.com/errata/RHSA-2007-0875.html The following updated files have been uploaded and are currently syncing to the mirrors: ia64: updates/ia64/RPMS/mysql-4.1.20-2.RHEL4.1.0.1.ia64.rpm updates/ia64/RPMS/mysql-bench-4.1.20-2.RHEL4.1.0.1.ia64.rpm updates/ia64/RPMS/mysql-devel-4.1.20-2.RHEL4.1.0.1.ia64.rpm updates/ia64/RPMS/mysql-server-4.1.20-2.RHEL4.1.0.1.ia64.rpm -- Pasi Pirhonen - upi(a)iki.fi - http://pasi.pirhonen.eu/ Top-postings silently ignored

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File Associations (Windows Guy)
by Juan C. Valido 31 Aug '07

31 Aug '07

I changed the default player for MP3 files to xmms, if the file is local it works fine, if the file is on a network drive ( all my music is ) it has the movie player as the default player, any way I can change that, Thanks...

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delay after wrong password
by Simon Jolle 31 Aug '07

31 Aug '07

Hi list If a user connect by Console or OpenSSH and type in the wrong password, I wish to delay the next password prompt. Use case is for example brute force attacks. I played with FAIL_DELAY in login.defs, but without success. cheers Simon -- XMPP: sjolle(a)swissjabber.org

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Question about centos 4 or 5 install with software RAID
by Jerry Geis 31 Aug '07

31 Aug '07

When doing software RAID-1 installs on reboot (just after install) I ALWAYS get RAID device is not clear - preforming reconstruction. Why is this? If I just installed the array should be in sync shouldnt it? And clean? Not that this is a big deal - it just seems odd. It does reconstruction and life goes on. Is something special at install time that we are only installing on one disk of the array and after reboot it now says we are unclean and populates the second disk in the array? Thanks, Jerry

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SELinux question - to fix bug in Webmin
by Lanny Marcus 30 Aug '07

30 Aug '07

I found a bug in Webmin when using Webmin with SELinux in Permissive Mode. The author of Webmin, asked me, in their bug tracker on SourceForge: > Ok, thanks ... I see the problem. Webmin opens the log file > /var/webmin/miniserv.error and connects STDERR to it, then runs other > commands like iptables, which inherits the STDERR file descriptor. > This is generally a good thing, as any error output from the iptables > command will go to that log file. > > But with selinux enabled, this fails as iptables doesn't have the > security context needed to write to that file. > Is there a chcon option or other command that can allow a file to be > written by any process? If so, I should update Webmin to run that on > the error log file. I replied that I'm a newbie and could he clarify, in newbie terms, what he would like me to find. He then replied: > Unfortunately I am a newbie when it comes to selinux too :-( > What I am looking for is a way to selinux that any process can write > to a file. I suspect that the chcon command can do this, but am not > sure how.. SELinux people: Can you explain what he needs? <https://sourceforge.net/tracker/?func=detail&atid=117457&aid=1781101&group_…> TIA! Lanny

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