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Keeping data on 2 servers in sync !
by Denis Croombs 06 Dec '05

06 Dec '05

I want to build 2 servers (both running samba) to provide file storage to 2 offices (approx 100 miles apart, linked via DSL) but all data writen to 1 server must also be saved to the other server. Both servers would also allow users to access the data via a VPN thus allowing 1 office with a failed server to access the other server via the vpn and still see the data from both offices. I currently have 1 server working but we want to add the second office to the system. (Currently 1 office has 10 users and the second office has 1 user connected via VPN ) but the second office will have 20 within 12 months and the first will have 35 soon )) Has anyone done anything like this ? I am currently reading & unpicking http://www.linux-ha.org/ to see what that gives me. Any clues/comments very welcome, even if you think I am mad ! Thanks Denis

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Raid with one disk?
by Sam Drinkard 06 Dec '05

06 Dec '05

Is it possible to set up a single disk raid (kind of redundant to call a single disk an array) but I've got a single SATA drive in the machine not doing anything. It's a 10k maxtor 74G drive, and what I really want is just to backup two home partitions. I can always reinstall the OS, but the data can't be recovered that easily. The mobo supports raid-0,1 and jbod. Suggestions? -- Snowman

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CENTOS4.2 swapon -s result ?
by Castello, Jean-pierre (TS/Linux-HPC) 06 Dec '05

06 Dec '05

Hello It is my first question here and I would like to thanks all of you to keep alive this stream and to give answers (I regulary read). Thanks for the good job. After installing CENTOS4.2 and "play with" I type the command swapon -s to verify everythings is ok but the command does nor return info as it should do. Is it something known ? Thanks Jean-Pierre Castello HP France mobile : + 33 (0) 6 72 99 37 40 E-MAIL : Jean-Pierre.Castello(a)hp.com (The contents of this message and any attachments to it are confidential and may be legally privileged. If you have received this message in error you should delete it from your system immediately and advise the sender. To any recipient of this message within HP: unless otherwise stated , you should consider this message and attachments as " HP CONFIDENTIAL". )

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CentOS 4.2/ppc
by Nick Tan 05 Dec '05

05 Dec '05

Hi All, I was wondering if there is a planned release date for 4.2 for PPC (or if there's a beta available)? The last reference I could find in the list archives was for October. Thanks, Nick

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Re: [users] CentOS 4.2 dag repo problem.
by Dries Verachtert 05 Dec '05

05 Dec '05

Hello, It would be nice if we could get a full list of packages which have a wrong sha1 checksum. I don't have the bandwidth for a full mirror of all of Dag's rpms and i also don't have shell access to such a mirror. So a small request for a mirror admin: The following checks the files repodata/*.xml.gz against the sha1 sums in repomd.xml and checks the RPMS/*.rpm files against the sha1 sums in primary.xml.gz. Can you run this on the repodata files of at least the el4-i386 rpms? If possible: on every distro/arch combination found in Dag's repo :-) example: cd /mybigmirror/apt.sw.be/redhat/el4/en/i386/dag/ # should have the same contents as http://apt.sw.be/redhat/el4/en/i386/dag/ xsltproc repomdtoshasum.xslt repodata/repomd.xml | sha1sum -c gunzip -c repodata/primary.xml.gz | xsltproc primarytoshasum.xslt - | sha1sum -c Those xslt files are in attach and you probably need to add a path to those xslt files. They're only quick hacks but they seem to work on a couple of rpms on my pc. It might be interesting to capture the output of both commands, for example: xsltproc repomdtoshasum.xslt repodata/repomd.xml | sha1sum -c >> output.txt 2>&1 gunzip -c repodata/primary.xml.gz | xsltproc primarytoshasum.xslt - | sha1sum -c >> output.txt 2>&1 Of course this is far from perfect: it doesn't check the .hdr files, apt config or old yum config stuff.. but it might give the list of rpm packages with a wrong checksum so we can ask heanet to check those files. thanks in advance! Dries -- Rpm packages for Red Hat Enterprise Linux, Fedora Core and Aurora at http://dries.ulyssis.org/rpm/

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Good vulnerability Scanner besides Nessus?
by James Pifer 05 Dec '05

05 Dec '05

Anyone know of a good vulnerability scanner they would recommend besides Nessus? Been googling, but a recommendation is preferred. Looking for another to run and compare the results I get with Nessus. Thanks, James

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access to httpd logs
by James Pifer 05 Dec '05

05 Dec '05

I need to enable some access to the httpd logs over ftp so they can be analyzed by another application to get a report. I used to do this on Windows NT before replacing the server with CentOS. Thanks to help from another thread I have an ftp server enabled on the web server. I thought the easiest thing to do would be to create an id for the application to connect with, then provide a symlink to the logs in that generic user's home directory. The problem is the logs are owned by root. How can I make them readable by this generic id without completely compromising security? Plus, as the logs rotate this id will still need access. Any suggestions? Thanks, James

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Booting from an external USB drive?
by Bart Schaefer 05 Dec '05

05 Dec '05

Is it possible? Booting the installer from the CD works, finds the USB drive, and allows me to put the root filesystem on it. I put the /boot partition on the internal hard drive and installed GRUB in the boot record of that partition. GRUB shows the menu and begins booting, but eventually fails with the error that /dev/sda5 (the external partition) does not exist. I was hoping (perhaps in vain) that initrd would provide the necessary modules/hooks to mount the USB device. Is there some step of the installation that I'm missing, or something extra that I need to do by hand, like in the old days when LILO had to be explicitly told about SCSI cards?

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Re: [CentOS] Configuring X after instal on CentOS4
by James B. Byrne 05 Dec '05

05 Dec '05

On Fri, 02 Dec 2005 22:36:26 -0600, Johnny Hughes <mailing- lists(a)hughesjr.com> wrote: > All the relevant documentation that is distributable from the > upstream provider is available here: > http://mirror.centos.org/centos/4/docs/ Thanks for the link. My original question had more to do with how one discovers the appropriate name for the command in question. Once one has that information it is usually a trivial exercise to track down the documentation and discover how to use the tool. However, there does not seem to be any internal reference to system- config-display in any of the X related man pages. Is this upstream decision purposeful or inadvertent? In any case, while web based documentation is wonderful, there are still frequent occasions when system resident documentation is all one has access to. The absence of documentation for setup and configuration applications can prove most inconvenient in those circumstances. Regards, Jim -- *** e-mail is not a secure channel *** mailto:byrnejb.<token>@harte-lyne.ca James B. Byrne Harte & Lyne Limited vox: +1 905 561 1241 9 Brockley Drive fax: +1 905 561 0757 Hamilton, Ontario <token> = hal Canada L8E 3C3

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slow responding firewall server
by Peter Farrow 05 Dec '05

05 Dec '05

Hi There, I recently suffered a serious hardware failure on one of my firewalls, (motherboard died), this machine was originally a redhat 9 box, on an Athlon 2200 with 512Megs RAM, this machine was doing the following jobs for a small network at a relatives house: Firewall (IPTABLES) Transparent proxy (squid) Sendmail smarthost IMAP mail server SAMBA file server IPSEC tunnel to my home. The only machines I had to replace it with were an Intel SC5000 chassis with twin PIII 1GHz CPUs on SCSI RAID (1 Gig RAM) and a compaq PII 450 (512Megs) software RAID on IDE 40Gig drives. So I installed Centos 4.2 on both, split the IMAP and SAMBA onto the SC5000 and put the firewall, Squid and sendmail smarthost on the Compaq. The system is connected to the net via a 2Meg Line. While each of these machines easily copes with the jobs they have to do, I have noticed (or rather my relative noticed and I agreed) that web browsing now has a high latency. i.e. you go to a new web page, there is a substantial pause, before the page starts to load (substantial a few seconds, whereas previously it was instant). DNS is all ok and working fine, there are no delays there. The DSL line shows very little latency from the net and outgoing from the lan. I note that squid uses a fair amout of CPU on the PII450 from time to time, but can't seem to get a handle on what is causing the delay. The only thing I can think of is that the PII450 running squid is just slow compared to the old Athlon box and I am reaping the "benefits" of that. I do find that hard to believe though, since the box isn't running X or anthing else extra. I also notice that sometimes some downloads, particularly large ones just seem to grind to a halt after a few megs, and sometimes then carry on a bit later if left, right up to full speed of the line. During this slowdown, the latency of the line even with large pings is fine, so I am sure the connection is good. Is Centos4.2 now so heavy that a PII450 is not enough for a transparent proxy and smarthost.... Any comments/ideas are welcome... Pete

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