Discuss October 2013

discuss@lists.centos.org

179 participants
157 discussions

cleaning up some LVM stuff
by Götz Reinicke - IT Koordinator 12 Oct '13

12 Oct '13

Hi, one more LVM thing: on one server some LVM stores are physically removed but still there are some informatione somwher spread adcross teh server. e.g. if I do a vgdisplay or pvcreat I get an error regarding that old storage: /dev/raid_10/lvol0: read failed after 0 of 4096 at 14000515383296: Eingabe-/Ausgabefehler How can I remove all information? Thanks for any hint. Regards . Götz -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 82 420 Fax +49 7141 969 55 420 E-Mail goetz.reinicke(a)filmakademie.de Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzender des Aufsichtsrats: Jürgen Walter MdL Staatssekretär im Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg Geschäftsführer: Prof. Thomas Schadt

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Odd useradd/LDAP behaviour
by Paul Jones 11 Oct '13

11 Oct '13

Hello list, On our CentOS 6.4 machines I've LDAP enabled such that Windows users with the requisite unix attributes can log into the machines. These remote windows users have UID/GID starting at 20000 so are well out of the way of local users. If I now create a local user with useradd, the UID/GID of the local user is the next available number in the range used by the Windows users. This is, users created before setting up LDAP are UID 501, 502 etc, but new users are 200XX. This then potentially causes problems when a new LDAP user is added, as we then have two users with the same UID/GID values. I've resolved this by editing the UID_MAX and GID_MAX fields in /etc/login.defs so the value is below the range used by the windows users. New test user gets UID/GID 503 as expected. I guess specifying the values in the useradd command would also work. So why is LDAP making useradd use the wrong values? Thanks for any suggestions, Paul

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CentOS6.4 and Apple keyboard
by Patrick Bégou 11 Oct '13

11 Oct '13

I have just installed (with kikstart) centOS6.4 on a PC which was previously running OpenSUSE (11.x). This PC has an apple keyboard and I'm unable to setup this keyboard. In .xsession-errors I get this messages : Error: No Symbols named "latin9" in the include file "macintosh_vndr/fr" Exiting Abandoning symbols file "(null)" ** (gnome-settings-daemon:8160): WARNING **: Could not activate the XKB configuration Error: No Symbols named "latin9" in the include file "macintosh_vndr/fr" Exiting Abandoning symbols file "(null)" ** (gnome-settings-daemon:8160): WARNING **: Could not activate the XKB configuration Google found on a RedHat forum that it seams to be an old known bug but do not find any update or workaround. I've several PC using Apple keyboards as users have also Apple laptops and they do not want to work with two different keyboards. Thanks for your help or advices. Patrick

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Centos.org webpage down
by Erick Ocrospoma 11 Oct '13

11 Oct '13

Hi, It seems that centos.org is not working properly, got a 502 bad gateway message. ~ Happy install ! ---- Cellphone : +51 950307809 Blog : http://zerick.me/ LUG : http://www.utpinux.org IRC : zerick About : http://about.me/zerick Linux User ID : 549567

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Port knocking and DNAT rules
by Lists 11 Oct '13

11 Oct '13

So I found an excellent port knocking tutorial using ONLY iptables rules that looks to be among the best I've ever seen. (warning: techno music, tough to read screen, you don't need to type it in because I post a link to script below) http://www.youtube.com/watch?v=0zFQocf7C_0 It works fabulously for simply opening a port to a locally managed service, but I can't seem to get it to work for a PREROUTING/DNAT rule. I've posted the shell script I'm trying to get to work, it should be self-documented. http://chico.benjamindsmith.com/iptables.txt I've confirmed that the logs correctly show port knocking 2, 3, and 4 in /var/log/messages so everything seems to be working golden all the way up to the last line. There are no errors reported when I run this script. The result that I get is that it acts as though packets are being dropped for 15 seconds, then I get connection refused. What am I doing wrong?

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sssd - ldap uid/gid does not match with uid/gids in the openLDAP DS
by Arun Khan 11 Oct '13

11 Oct '13

CentOS 6.4 (amd64) client desktop with SSSD installed+configured to do LDAP AUTH from an openLDAP DS. Groups in LDAP DS -- dsusers (for all users), project1, project2, .... The objective is to give group permissions to directory trees with users belonging to various groups; users thereby inheriting the ACL given to respective groups. Test case -- uid: jdoe, gid: dsusers (primary) On LDAP client workstation - id jdoe shows uid+gid as above. Then I add uid jdoe to the 'project1' group in the openLDAP DS. On the client workstation - id jdoe shows member of 'dsusers' only. Thinking it could be due to local cache, I have deleted the files in /var/lib/sss/db/ and still id jdoe reports member of dsusers only. I have also waited > 5 mins. expecting the client side cache to be updated but still the same issue. jdoe does not show up as member of project1. In order for jdoe to show up as member of 'project1' group, I have to restart sssd. In sssd.conf, in the domain section enumerate=FALSE. I would appreciate any pointers to shorten the client side updates regarding uid+gid association. TIA. -- Arun Khan

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- problem gcc with yum
by Paolo De Michele 10 Oct '13

10 Oct '13

hi all, today, I have this problem: # yum install gcc Loaded plugins: fastestmirror, security Loading mirror speeds from cached hostfile * base: ftp.hosteurope.de * epel: mirror.de.leaseweb.net * extras: ftp.hosteurope.de * updates: ftp.hosteurope.de Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package gcc.x86_64 0:4.4.7-3.el6 will be installed --> Processing Dependency: libgomp = 4.4.7-3.el6 for package: gcc-4.4.7-3.el6.x86_64 --> Processing Dependency: cpp = 4.4.7-3.el6 for package: gcc-4.4.7-3.el6.x86_64 --> Processing Dependency: glibc-devel >= 2.2.90-12 for package: gcc-4.4.7-3.el6.x86_64 --> Processing Dependency: cloog-ppl >= 0.15 for package: gcc-4.4.7-3.el6.x86_64 --> Processing Dependency: libgomp.so.1()(64bit) for package: gcc-4.4.7-3.el6.x86_64 --> Running transaction check ---> Package cloog-ppl.x86_64 0:0.15.7-1.2.el6 will be installed --> Processing Dependency: libppl_c.so.2()(64bit) for package: cloog-ppl-0.15.7-1.2.el6.x86_64 --> Processing Dependency: libppl.so.7()(64bit) for package: cloog-ppl-0.15.7-1.2.el6.x86_64 ---> Package cpp.x86_64 0:4.4.7-3.el6 will be installed --> Processing Dependency: libmpfr.so.1()(64bit) for package: cpp-4.4.7-3.el6.x86_64 ---> Package glibc-devel.x86_64 0:2.12-1.107.el6_4.4 will be installed --> Processing Dependency: glibc-headers = 2.12-1.107.el6_4.4 for package: glibc-devel-2.12-1.107.el6_4.4.x86_64 --> Processing Dependency: glibc-headers for package: glibc-devel-2.12-1.107.el6_4.4.x86_64 ---> Package libgomp.x86_64 0:4.4.7-3.el6 will be installed --> Running transaction check ---> Package glibc-headers.x86_64 0:2.12-1.107.el6_4.4 will be installed --> Processing Dependency: kernel-headers >= 2.2.1 for package: glibc-headers-2.12-1.107.el6_4.4.x86_64 --> Processing Dependency: kernel-headers for package: glibc-headers-2.12-1.107.el6_4.4.x86_64 ---> Package mpfr.x86_64 0:2.4.1-6.el6 will be installed ---> Package ppl.x86_64 0:0.10.2-11.el6 will be installed --> Finished Dependency Resolution Error: Package: glibc-headers-2.12-1.107.el6_4.4.x86_64 (updates) Requires: kernel-headers >= 2.2.1 Error: Package: glibc-headers-2.12-1.107.el6_4.4.x86_64 (updates) Requires: kernel-headers You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest how can I fix? thanks in advance

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Re: [CentOS] [CEntOS] - problem with iptables
by Paolo De Michele 10 Oct '13

10 Oct '13

you helped me clear ideas thanks for everything 2013/10/10 Reindl Harald <h.reindl(a)thelounge.net> > > Am 10.10.2013 16:13, schrieb Paolo De Michele: > > sorry, but now if I modify /etc/sysconfig/iptables and I add two strings, > > per example: > > > > output omitted > > ----- > > -A INPUT -s ddns.no-ip.org -p icmp -j ACCEPT > > -A INPUT -j DROP > > ------ > > output omitted > > > > and I do: > > > > service iptables save > > and > > restart my iptables firewall, output iptables -L is: > > > > -A INPUT -j DROP > > -A INPUT -s ddns.no-ip.org -p icmp -j ACCEPT > > > > > > why? > > *why* you you mangle around in /etc/sysconfig/iptables > this file is written by "service iptables save" > > this file is *read* at iptables *startup* and written with > the *currently* active rules with "service iptables save" > > man iptables > _______________________________________ > > #!/bin/bash > iptables -P INPUT DROP > iptables -P FORWARD DROP > iptables -F > iptables -X > CHAINS=`cat /proc/net/ip_tables_names 2>/dev/null` > for i in $CHAINS; do iptables -t $i -F; done && echo "Flush OK" || echo > "Flush FAILED" > for i in $CHAINS; do iptables -t $i -X; done && echo "Clear OK" || echo > "Clear FAILED" > for i in $CHAINS; do iptables -t $i -Z; done > iptables -A INPUT -p icmp -s 64.39.31.103 -j ACCEPT > iptables -A INPUT -j DROP > service iptables save > _______________________________________ > > BTW: > nobody but you is using hostnames for iptables-rules because it is a pretty > dumb idea to rely on a working name resolution in realy boot > >

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Keyboard layout change
by Iqbal Aroussi 10 Oct '13

10 Oct '13

Hi All, I have a server acting as Terminal Server, with default US keyboard layout. How can I change keyboard language to another one for a specific user only ? Best Regards Iqbal Aroussi

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[CEntOS] - problem with iptables
by Paolo De Michele 10 Oct '13

10 Oct '13

hi all, I have a problem with iptables on CentOS 6.2. I configured: chkconfig iptables on and the file /etc/sysconfig/iptables if you reboot the machine configurations are not loaded. iptables-L gives me the default configurations (not assigned) if I (a machine booted): service iptables start then then it works. how can I fix? thanks in advance

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Discuss October 2013