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Guide to stripping Centos 3
by R P Herrold 16 Jan '05

16 Jan '05

I responded to a post in the Dell poweredge mailing list earlier today. My answer was off the top of my head, with a bit of experimentation. The content may be useful in the Cenyos context as well to admin's looking to strip the size of an install to the bare bones. Comment welcomed. Can anyone see any packages which I have missed? -- Russ Herrold ---------- Forwarded message ---------- Date: Sat, 15 Jan 2005 12:29:12 -0500 (EST) From: R P Herrold <herrold(a)owlriver.com> To: linux-poweredge(a)dell.com Subject: Re: dell-lnx-pe] Re: Stripping RHEL 3.0? > At 07:58 PM 1/14/2005 -0500, David Hubbard wrote: >> Does anyone know of a good guide for stripping >> down RHEL 3.0? <snip> >> Due to all the dependencies >> I can't find a way to actually strip RHEL in a way >> that leaves everything happy. Great timing and a good question -- I was just building such a host. I'll test for a bit to minimize size. Kickstart and anaconda are your friends. Here is a quick guide: During each install, a file called 'ks.cfg' is left by anaconda in /root/ At the end of this post, I include the ks.cfg file which will build a stripped host. I have done a couple test installs, and gone through the resulting packagelist using; rpm -qa --qf '%{size} %{name} \n' | sort -n | less to see what I could add with the '-' prefix at the bottom of the file. (I have left in there a couple 'conveneince packages' and I usually add one extravagance -- I prefer 'konsole' to pop back as a remote terminal and so pay its space penalty, but comment it out here) As I said, I 'went hunting' and trimmed it down to 465 M ; more savings are possible. The worst remaining mandatory 'size offenders' in the install are: glibc-common 42M perl 27M kernel 22M Not much more we can do there. But ... Once the install is done, turn off auditting: chkconfig audit off service audit stop and reclaim the LARGE (100M) amout of room these files eat up cd /var/log/audit.d/ rm -f * Unfortunately the package is not deletable as there are dependency issues. As I say. I then end up at: 465M Using a network install from a local mirror and a ks.cf file permits 'gameing' to see what changed in the ks.cfg result in a given size profile. See my notes at: http://www.owlriver.com/tips/pxe-install/ for more information on setting up and debugging such an environment. It permits experimentation with fast test installs (under ten minutes per test shot, even on a low RAM host (64M)) to 'tune' for a desired result. -- Russ Herrold [root@ftp kickstart]# cat ks.cfg-Centos_34 # # Centos 34 server - built to be tiny as possible # install lang en_US.UTF-8 langsupport --default en_US.UTF-8 en_US.UTF-8 keyboard us mouse genericwheelps/2 --device psaux url --url ftp://10.16.33.105/pub/install/ftpinstall # xconfig --card "RIVA128" --videoram 4096 --hsync 31.5-35.1 --vsync 50-61 --resolution 1280x800 --depth 24 skipx network --device eth0 --bootproto dhcp # rootpw --iscrypted <elided> firewall --disabled # not yet in RHEL 3 # selinux --disabled authconfig --enableshadow --enablemd5 timezone America/New_York bootloader --location=mbr # --append hdb=ide-scsi # The following is the partition information you requested # Note that any partitions you deleted are not expressed # here so unless you clear all partitions first, this is # not guaranteed to work clearpart --all --drives=hda part /boot --fstype ext3 --size=100 --ondisk=hda part / --fstype ext3 --size=1024 --grow --ondisk=hda part /var/spool --fstype ext3 --size=1024 --grow --ondisk=hda part /var/cache --fstype ext3 --size=1024 --grow --ondisk=hda part /var/log --fstype ext3 --size=1024 --grow --ondisk=hda part swap --size=128 --grow --maxsize=256 --ondisk=hda # basically a unconfigured server - the new 2005 Centurion %packages kernel elinks grub joe lftp lynx rdate rpm-build rsync yum # kdebase -apmd -autofs -centos-yumcache -comps -cups -cups-libs -eal3-certification -eal3-certification-doc -finger -freetype -ipsec-tools -iptables -iptables-ipv6 -irda-utils -iscsi-initiator-utils -isdn4k-utils -krb5-libs -krb5-workstation -krbafs-utils -kernel-pcmcia-cs -libwvstreams -mdadm -mgetty -mtr -nano -nfs-utils -pam_krb5 -pam_smb -parted -portmap -raidtools -redhat-config-network-tui -redhat-config-securitylevel-tui -redhat-logos -redhat-menues -redhat-lsb -rpmdb-redhat -stunnel -sysreport -talk -tftp -specspo -vconfig -wireless-tools -wvdial -xinetd -ypbind -yp-tools # If you use yum, you do not need: -up2date -up2date-update %post [root@ftp kickstart]#

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Re: UPDATED: resolved caching-nameserver network install failure
by donavan nelson 15 Jan '05

15 Jan '05

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 |>>Since people have both updates and os in their yum.conf files, how are |>>they _NOT_ going to get the update. |> |>I didn't think 7.3 was accessible unless you enabled the testing |>repository. I'll verify and hit lance if that's NOT the case as it |>would invalidate what I've just said. |> This was intended to imply via a yum command. |> |>>It seems to me they will still get the newer version via yum and |>>dependency resolution regardless of where in the directory structure it |>>is. |> |>If 7.3 is infact in updates, they are getting it. |> | | No ... if it is in centos/3.4/os/i386/RedHat/RPMS/ they are getting | it ... this is such a mess....but for everyone who may have this question. caching-nameserver-7.2 and caching-name-server-7.3 both exist in the centos/3.4/os/i386/RedHat/RPMS (new installs and network installs will get 7.3 due to the package list). System doing upgrades will only see 7.2 because 7.2 is the only package populated in centos/3.4/os/i386/headers/ . | yum.conf has an entry like this: | | [base] | name=CentOS-$releasever - Base | baseurl=mirror.../centos/$releasever/os/$basearch/ | | SO ... any RPM in centos/3.4/os/i386/RedHat/RPMS/ is going to also be in | package resolution...since 7.3 is in centos/3.4/os/i386/RedHat/RPMS/ and | since 7.2 is in updates, 7.3 will be installed. | See about regarding the location of both packages. Also yum only uses the headers it finds (as a result of using yum-arch). It doesn't NOT examine the actual files in the directory. .dn -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFB6Y4wCRFXD+VcGBkRAp6VAJ9YGUZF39lZtXESwF3Dps7IgKFlqACfYJZl hI4hZSUangOBEkNZ1Yr+BB0= =MTdH -----END PGP SIGNATURE-----

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Loosing keyboard
by dan1 15 Jan '05

15 Jan '05

Hello. I am experiencing a problem with CentOS 3, it's that when I start Xwindow, my keyboard is lost and I can't do anything anymore. The Num Lock doesn't react nor the Caps lock. It's like if it would just be disabled. If I quit Xwindow, then my keyboard comes back again, working perfectly. Did anybody also have this problem ? I had a look elsewhere but didn't see anything helpful. My XF86Config file has a normal input section and I tried to change it without success. The current one: Section "InputDevice" Identifier "Keyboard0" Driver "keyboard" EndSection Of course I also changed the physical keyboard. Thanks for any pointers, Daniel No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.6.11 - Release Date: 12.01.2005

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rpmbuild --rebuild --define 'buildklips 1' openswan-2.3.0-1rhel.src.rpm quirk
by Ted Kaczmarek 15 Jan '05

15 Jan '05

rpmbuild --rebuild --define 'buildklips 1' openswan-2.3.0-1rhel.src.rpm The present kernel configuration has modules disabled. Type 'make config' and enable loadable module support. Then build a kernel with module support enabled. make[1]: *** [modules] Error 1 make[1]: Leaving directory `/usr/src/linux-2.4.21-27.0.1.EL' make: *** [module26] Error 2 make: Leaving directory `/usr/src/redhat/BUILD/openswan-2.3.0' error: Bad exit status from /var/tmp/rpm-tmp.43563 (%build) # Loadable module support # CONFIG_MODULES=y CONFIG_MODVERSIONS=y CONFIG_KMOD=y I am tad perplexed here, any ideas? Regards, Ted

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Centos 3.4 x86_64 beta
by Michael Rock 15 Jan '05

15 Jan '05

Is the beta 3.4 x86_64 almost ready for production release? I need to setup an Athlon 64, is the beta 3.4 stable enough or should I download the 3.3 64 bit ISOs? thx -- Mike __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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postfix with tls?
by support＠ev-theol.uni-bonn.de 15 Jan '05

15 Jan '05

hi all, i tried to install postgrey for postfix and had to update postfix to version 2.1. i added the following to /etc/yum.conf [postfix-2.1-rhel3] name=Postfix Mail Server for RedHat Enterprise Linux 3.0 - $basearch baseurl=http://ftp.WL0.org/yum/postfix/2.1/rhel3/ after the update i have problems because the new version of postfix doesn´t support SASL. is there an postfix-tls rpm for CentOS 3? If not how can i remove postfix 2.1 and install the old version with TLS support? thank you very much for your help

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Centos-3 x86_64 Updates (libtiff, mozilla)
by Tru Huynh 14 Jan '05

14 Jan '05

New Security Errata for Centos-3 x86_64 Systems: This affects all releases of Centos-3: libtiff: https://rhn.redhat.com/errata/RHSA-2005-019.html RPMS/libtiff-3.5.7-22.el3.i386.rpm RPMS/libtiff-3.5.7-22.el3.x86_64.rpm RPMS/libtiff-devel-3.5.7-22.el3.x86_64.rpm SRPMS/libtiff-3.5.7-22.el3.src.rpm mozilla: https://rhn.redhat.com/errata/RHSA-2005-038.html RPMS/mozilla-1.4.3-3.0.7.centos.1.i386.rpm RPMS/mozilla-1.4.3-3.0.7.centos.1.x86_64.rpm RPMS/mozilla-chat-1.4.3-3.0.7.centos.1.x86_64.rpm RPMS/mozilla-devel-1.4.3-3.0.7.centos.1.x86_64.rpm RPMS/mozilla-dom-inspector-1.4.3-3.0.7.centos.1.x86_64.rpm RPMS/mozilla-js-debugger-1.4.3-3.0.7.centos.1.x86_64.rpm RPMS/mozilla-mail-1.4.3-3.0.7.centos.1.x86_64.rpm RPMS/mozilla-nspr-1.4.3-3.0.7.centos.1.i386.rpm RPMS/mozilla-nspr-1.4.3-3.0.7.centos.1.x86_64.rpm RPMS/mozilla-nspr-devel-1.4.3-3.0.7.centos.1.x86_64.rpm RPMS/mozilla-nss-1.4.3-3.0.7.centos.1.i386.rpm RPMS/mozilla-nss-1.4.3-3.0.7.centos.1.x86_64.rpm RPMS/mozilla-nss-devel-1.4.3-3.0.7.centos.1.x86_64.rpm SRPMS/mozilla-1.4.3-3.0.7.centos.1.src.rpm To Apply these updates run: yum update Thanks Tru Huynh -- http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B

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Postfix with TLS
by support＠ev-theol.uni-bonn.de 14 Jan '05

14 Jan '05

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Centos-3 x86 Updates
by seth vidal 14 Jan '05

14 Jan '05

New Security Errata for Centos-3 x86 Systems: This affects all releases of Centos-3: libtiff: https://rhn.redhat.com/errata/RHSA-2005-019.html RPMS/libtiff-3.5.7-22.el3.i386.rpm RPMS/libtiff-devel-3.5.7-22.el3.i386.rpm SRPMS/libtiff-3.5.7-22.el3.src.rpm mozilla: https://rhn.redhat.com/errata/RHSA-2005-038.html RPMS/mozilla-1.4.3-3.0.7.centos.1.i386.rpm RPMS/mozilla-chat-1.4.3-3.0.7.centos.1.i386.rpm RPMS/mozilla-devel-1.4.3-3.0.7.centos.1.i386.rpm RPMS/mozilla-dom-inspector-1.4.3-3.0.7.centos.1.i386.rpm RPMS/mozilla-js-debugger-1.4.3-3.0.7.centos.1.i386.rpm RPMS/mozilla-mail-1.4.3-3.0.7.centos.1.i386.rpm RPMS/mozilla-nspr-1.4.3-3.0.7.centos.1.i386.rpm RPMS/mozilla-nspr-devel-1.4.3-3.0.7.centos.1.i386.rpm RPMS/mozilla-nss-1.4.3-3.0.7.centos.1.i386.rpm RPMS/mozilla-nss-devel-1.4.3-3.0.7.centos.1.i386.rpm SRPMS/mozilla-1.4.3-3.0.7.centos.1.src.rpm To Apply these updates run: yum update Thanks -sv

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PHP+Oracle problem
by Mezei Zoltan 14 Jan '05

14 Jan '05

Hi! I have succesfully installed Oracle 9.2.0.4 on Centos. Everything is fine with it. Then I recompiled php-4.3.2-19.ent.src.rpm with rpmbuild --rebuild --define 'oracle 1' php-4.3.2-19.ent.src.rpm The compilation was successful, and I got the php and the php-oci8 rpms. Then I installed them both. After this one running the following PHP script: <?php $c = ocilogon("wonttell", "wonttell", "WONTTELL"); ocilogoff($c); ?> by issuing the command: php < oracle_test.php executed with segfault. The strace output is available at: http://www.telefor1.hu:7000/segfault.txt Strance, but when invoked the script from the web it runs flawlessly. Can anybody point to a solution that solves this problem? -- Zizi

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