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NTP on CentOS 3.4
by Jason Dixon 19 Apr '05

19 Apr '05

Running CentOS 3.4, I enabled the ntpd service and noticed that it opens up a hole in the firewall for ntp from 127.127.1.0. I look in the ntpd initscript and see that it's reading in servers from /etc/ntp/step-tickers. However, that file is empty... /etc/ntp/ntpservers contains clock.redhat.com and clock2.redhat.com, but ntpservers isn't used *anywhere*. This looks like a bug, but maybe I'm overlooking something stupid. I reviewed the RHEL manuals, but they only reference the GUI utilities now (grrr). Any ideas a) where 127.127.1.0 is coming from (parsing bug?), or b) why the initscript doesn't reference /etc/ntp/ntpservers? Thanks, -- Jason Dixon DixonGroup Consulting http://www.dixongroup.net

5 8

MailScanner With One vs Two Postfix Instances
by Kennedy Clark 19 Apr '05

19 Apr '05

An interesting point came up while recently discussing my Postfix virtual_alias issues with the MailScanner list. Apparently there is some risk with the "two instances of postfix" approach described in: http://www.hughesjr.com/content/view/12/30/Guides It sounds like Postfix and MailScanner can step on each other in the deferred queue. They recommended the single Postfix instance "hold" mechanism recommended here: http://www.sng.ecs.soton.ac.uk/mailscanner/install/postfix.shtml Here are the steps I used to convert: 1) service MailScanner stop 2) Edit MailScanner.conf and change Incoming Queue Dir = /var/spool/postfix.in/deferred to Incoming Queue Dir = /var/spool/postfix/hold 3) Rename /etc/postfix.in to /etc/postfix.old-in 4) Rename /var/spool/postfix.in to /var/spool/postifx.old-in 5) Edit /etc/postfix/master.cf and uncomment the "smtp inet n - n - - smtpd" that was commented out in Step #12 of the 2-step instructions 6) Edit /etc/postfix/main.cf and add: header_checks = regexp:/etc/postfix/header_checks 7) Create /etc/postfix/header_checks containing: /^Received:/ HOLD 8) service MailScanner start And you should be back in business. Note that the /etc/init.d/MailScanner script still references both an in and out Postfix instance; however, in looking at the code, once /etc/postfix.in is gone/renamed the "in" startup action becomes a no-op. I should also point out that there is absolutely NO implied criticism of the SUPERB guides Johnny has put out. I have found them to be extremely helpful -- thanks, Johnny! Regards, Kennedy

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Problems installing Centos 3.4 & 4 using NFS + Kickstart
by Dr R L Oswald, Cranfield University UK 19 Apr '05

19 Apr '05

My hardware is Sun V65x servers, (6GB RAM/2xXeon3GHZ/36GB SCSI disk). I have NFS repositories of Centos 3.1, Centos 3.4, Centos 4 & RedHat 9.0 ISO distros set up. I use boot floppies for each o/s with the same kickstart file which is of course altered to point at the desired distro. With Centos 4 I have to use a boot CDROM, of course, rather than floppy disk. I wish to set up servers with either Centos 3.4 or 4 versions rather than RH9. Root disk partition is 24GB btw. The kickstart boot works fine with RH9 & Centos 3.1. However it fails with Centos 3.4 & Centos 4 but in different ways: Centos 3.4 ======== The kickstart proceeds normally, formats the partitions & starts the install. However at 52% of the way through, it aborts, always on the same file: "glibc-kernheaders-nnnn.rpm" The fatal error message is non-specific & suggests that media is defective or disk space inadequate. I have checked the md5 sums of the ISOs & they agree with the download site ones. I have also extracted the "glibc-kernheaders-nnnn.rpm" from the ISO image #1 & compared its' md5 sum with the same module from the /os/ directory on the download site & they also agree. I have also downloaded the ISOs again & they are the same md5s as the first set :-\ Centos4 ======= This install gets to the point at where it would normally try & mount up the CENTOS4 NFS repository which is on the same server as all the other distros (this runs RH9). It then goes into a loop whereby it keeps prompting for the name of the NFS server & the CENTOS directory, where it would normally just mount it & proceed with the installation. Anyone out there with similar experience & a working fix for this issue please ? Les Oswald

2 1

named problem
by Gerald Waugh 19 Apr '05

19 Apr '05

Hi, Running Centos4, and have a problem starting named, it's trying to write the pid to '/var/run/named/named.pid': Permission denied Should'ny it be writing to /var/named/chroot/var/run/named and I see this error; "ignoring config file logging statement due to -g option" Any help appreciated... Gerald

1 0

Centos Review on OSNEWS.
by bards1888 19 Apr '05

19 Apr '05

Can be found here; http://osnews.com/comment.php?news_id=10349

1 0

Install bombed
by Robert Moskowitz 19 Apr '05

19 Apr '05

See attached file. This was on an old DELL with removable drives.

3 2

newbie
by krishnaprasad 19 Apr '05

19 Apr '05

Dear all Can I get the kernel source for the centos 3.4 Release final kernel version is 2.4.21-27.0.2.EL Thanks Prasad

2 1

Have install diskette for 3.0, but can't find the .img for 4.0
by Robert Moskowitz 19 Apr '05

19 Apr '05

OK. I am in an emergency crunch. I need that 4.0 install diskette. Like 2 hours ago! Where is it???????? I don't want to have to install 3.0 on this box.

2 1

more: Have install diskette for 3.0, but can't find the .img for 4.0
by Robert Moskowitz 19 Apr '05

19 Apr '05

I have found something called: diskboot.img at: http://www.gtlib.gatech.edu/pub/centos/4/os/i386/images/ But it is 6Mb large (6411Kb) instead of 1411Kb And the rawreadwrirewin program gets an error on it when run on NT. On Win2000, it makes a diskette that fails to boot.. So really, HELP!!!! I 'just' discovered that my old bootable diskette is for Centos 3.0, and my other CDs are Centos 3.3. ================================================================ OK. I am in an emergency crunch. I need that 4.0 install diskette. Like 2 hours ago! Where is it???????? I don't want to have to install 3.0 on this box. Illegitimi non Carborundum

3 4

PCMCIA not working on IBM Thinkpad r40
by Joe Harb 19 Apr '05

19 Apr '05

I am running Centos 4 on a Thinkpad r40 and it does not see any pcmcia cards. I know the socket is good because I had it working with Fedora Core 3. A funny thing though, once I updated my fedora kernel to a certain rev. (don't remember the version) the card socket no longer worked. Going back to an un-upgraded install of Fedora 3 worked. Has anyone seen this problem and worked this out with Centos? Joe

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