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SSH Question relating to Public and Private Keys
by Clint Dilks 17 Apr '08

17 Apr '08

Hi People, The Linux Environment I am responsible for is using ssh key pairs to allow access to a number or accounts on a number Linux Servers. I currently have the opportunity to re-design some of this. So I would like to tap into peoples experiences to see what might be some good changes to make. Specifically I have a couple of questions 1. Currently all of the key pairs we are using have empty passphrases is it worth the effort of changing this and setting up ssh-agent compared to what you gain in security by doing this ? 2. At this stage I am going to use RSA Keys of the default size, is this generally the best approach? Thanks for any thoughts, and have a nice day :)

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How to Contact Package Maintainer
by Art Age Software 17 Apr '08

17 Apr '08

Hi, I'm wondering what the correct channel is for communicating with the maintainer of a particular package in the Extras repo. Specifically, I would like to find out who maintains the DRBD 8.0.x package, as there is a newer version (8.0.12) that I would like to see added. Or, alternatively, what is the process for suggesting that an out-of-date package be updated in the repo? Thanks! P.S. Apologies if this is a double-post. My first attempt did not seem to go.

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Clamav update error
by Olaf Mueller 17 Apr '08

17 Apr '08

Hello, anyone else seeing this? Resolving Dependencies --> Populating transaction set with selected packages. Please wait. ---> Package clamav-db.i386 0:0.93-1.el5.rf set to be updated ---> Package clamd.i386 0:0.93-1.el5.rf set to be updated ---> Package clamav-milter.i386 0:0.93-1.el5.rf set to be updated ---> Package clamav.i386 0:0.93-1.el5.rf set to be updated --> Running transaction check --> Processing Dependency: libclamunrar_iface.so.3 for package: clamav --> Finished Dependency Resolution Error: Missing Dependency: libclamunrar_iface.so.3 is needed by package clamav regards Olaf

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CONNECTING VIA SSH BETWEEN CENTOS 4 AND 5
by Chris Geldenhuis 16 Apr '08

16 Apr '08

Hi, I am trying to set up an automatic connection between CentOS 4 system (server) and a CentOS 5 DomU VM (client) via ssh to enable my to back up development files on the server to the client with a cron process. I generate they key pair without a pass phrase on the client and copy the public key to the same user's .ssh directory on the server as authorized_keys2. When I try to ssh to the Server from the Client, I am still asked for the user's password on the client. If I do the same with CentOS 5 for both Client and Server, I can login without providing a password. The versions of ssh on the two systems are: Client (CentOS 5): OpenSSH_4.3p2, OpenSSL 0.9.8b 04 May 2006 Server (CentOS 4): OpenSSH_3.9p1, OpenSSL 0.9.7a Feb 19 2003 Does anyone on the list know whether these versions are compatible or how to get them to work together without requiring a password. It is not an option to change to CentOS5 on the server side as that system is serving as a development system for a client running RedHat ES 4 and has to have the identical configuration and be binary compatible. TIA ChrisG

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FreeRadius + Dynamic VLANs/802.1x Authentication
by Matt Shields 16 Apr '08

16 Apr '08

Has anyone setup FreeRadius to do automatic VLAN assignments on their switches based on client mac addresses? If so, would you be willing to share your radius configs? I haven't touched radius since mid 90's and am stuck trying to get this to work. It would be much appreciated. thanks -- -matt

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AWStats included with Centos 5.1 distro?
by Pam Astor 16 Apr '08

16 Apr '08

Hi, Is AWStats included in the Centos 5.1 Distro? _________________________________________________________________ Going green? See the top 12 foods to eat organic. http://green.msn.com/galleries/photos/photos.aspx?gid=164&ocid=T003MSN51N16…

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Centos 5.1 - Xen/ domU related booting questions
by Tomasz Nowak 16 Apr '08

16 Apr '08

Hello, I successfuly run Centos 5.1 domU in Centos 5.1 dom0. But I still have some minor issues/errors/warnings while booting I'd like to fix and here are my questions: 1. How to disable loading usb host controler module: [...from dmesg... ] Loading uhci-hcd.ko module USB Universal Host Controller Interface driver v3.0 insmod: error inserting '/lib/uhci-hcd.ko': -1 No such device Loading ohci-hcd.ko module insmod: error inserting '/lib/ohci-hcd.ko': -1 No such device Loading ehci-hcd.ko module mount: could not find filesystem '/proc/bus/usb' [...] I have extra parameters being passed to kernel in grub: kernel /boot/vmlinuz-2.6.18-53.1.14.el5xen ro root=LABEL=/ console=xvc0 nousb nopcmcia parport=0 but it seems kernel ignores it in domU (works in dom0) 2. How to disable loading floppy detection/support Apr 16 14:03:56 xtest1 kernel: Floppy drive(s): fd0 is unknown type 15 (usb?), fd1 is unknown type 15 (usb?) Apr 16 14:03:56 xtest1 kernel: Failed to obtain physical IRQ 6 Apr 16 14:03:56 xtest1 kernel: floppy0: no floppy controllers found 3. How to disable loading parport/lp modules (parport_pc, parport, lp) Apr 16 14:03:56 xtest1 kernel: lp: driver loaded but no devices found 4. How to setup xm console correctly? While system boots I see: Remounting root filesystem in read-write mode: [ OK ] Mounting local filesystems: [ OK ] Enabling local filesystem quotas: [ OK ] Enabling /etc/fstab swaps: [ OK ] INIT: Entering runlevel: 3 Entering non-interactive startup with no colors. How to make it real console-like, with colors: Remounting root filesystem in read-write mode: [ OK ] Mounting local filesystems: [ OK ] Enabling local filesystem quotas: [ OK ] Enabling /etc/fstab swaps: [ OK ] -- Tomek

2 1

reinstall perl packages in Centos5
by israel.garcia＠cimex.com.cu 16 Apr '08

16 Apr '08

Hi, I'm running a CentOS5 email server with mailscanner/postfix/spamassassin.. but it seems I made something with perl that now I get this error when compile ANY package using perl: Global symbol "%Config" requires explicit package name at /usr/lib/perl5/5.8.8/ExtUtils/Liblist/Kid.pm line 394. Global symbol "%Config" requires explicit package name at /usr/lib/perl5/5.8.8/ExtUtils/Liblist/Kid.pm line 395. Global symbol "%Config" requires explicit package name at /usr/lib/perl5/5.8.8/ExtUtils/Liblist/Kid.pm line 396. Global symbol "%Config" requires explicit package name at /usr/lib/perl5/5.8.8/ExtUtils/Liblist/Kid.pm line 411. Global symbol "%Config" requires explicit package name at /usr/lib/perl5/5.8.8/ExtUtils/Liblist/Kid.pm line 421. Global symbol "%Config" requires explicit package name at /usr/lib/perl5/5.8.8/ExtUtils/Liblist/Kid.pm line 433. Compilation failed in require at /usr/lib/perl5/5.8.8/ExtUtils/Liblist.pm line 7. Compilation failed in require at /usr/lib/perl5/5.8.8/ExtUtils/MM.pm line 8. Compilation failed in require at /usr/lib/perl5/5.8.8/ExtUtils/MakeMaker.pm line 42. Compilation failed in require at Makefile.PL line 3. BEGIN failed--compilation aborted at Makefile.PL line 3. So, I tried to reinstall perl-5.8.8 package and nothing.. my question is: How can I Reinstall all perl packages using yum in CentOS5? Thanks for your time Regards Israel.

2 1

Problem with CentOS server: am I running a firewall?
by Timothy Murphy 16 Apr '08

16 Apr '08

I recently tried to swap server from an ancient Asus PIII machine running Fedora-8 to a Dell PowerEdge T105 running Centos-5.1 . Unfortunately, I have not been able to set it up to allow local machines to access the internet. I can access the internet directly from the server (which connects to an ADSL modem) but not from a laptop connected to the server through an ethernet hub or WiFi router. I can ssh into the server from the laptop, but cannot ping anything beyond the server. It is as though there were a firewall running on the server which will not allow packets on the LAN to pass to the internet. This is probably a very ignorant question, but is there such a default firewall running under CentOS? I've gone back to my old server temporarily, but would prefer to sort out the new one if I could. Any advice or suggestions gratefully received.

2 3

Diskless Environment
by gopinath 16 Apr '08

16 Apr '08

> Hi > > according to the configuration defined in the below link i had configured > on my PC. > But when i do network boot on diskless Pc. > > It obtains ip from dhcp server > then it also loads the defaults file in the pxelinux.cfg directory kept on > the tftp server > > then it displays > > Welcome to Redhat Network Install > > some snake symbol > > then > Enter the number of the Operation system for network install > > 0: Local Disk > > boot: > Loading from the local disk.. > > > please help me out is there anything extra to be done .. > > > ----- Original Message ----- > From: "Max Hetrick" <maxhetrick(a)verizon.net> > To: "CentOS mailing list" <centos(a)centos.org> > Sent: Thursday, April 10, 2008 7:35 PM > Subject: Re: [CentOS] Diskless Environment > > > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > gopinath wrote: > > > How to configure Diskless environment in CentOS 5.1. Please help me out > > > > > > I have a small guide to setting up an NFS server and then dishing out > > diskless clients across PXE booting. It's out of date as I've not had > > time to update it to pertain to CentOS 5.1 explicitly, but it should be > > relevant and almost the same. > > > > <http://www.maxsworld.org/index.php/how-tos/rhel-diskless-clients> > > > > Regards, > > Max > > -----BEGIN PGP SIGNATURE----- > > Version: GnuPG v1.4.5 (GNU/Linux) > > > > iD8DBQFH/h66IXSX/6LmsXkRAusTAJ46JmTQ/hlZU9jTz3oE+Uj+iml/ZgCfXMlY > > 3z719a1JbS3xlFt/r0g/V38= > > =x88X > > -----END PGP SIGNATURE----- > > _______________________________________________ > > CentOS mailing list > > CentOS(a)centos.org > > http://lists.centos.org/mailman/listinfo/centos > > >

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