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34753 discussions

Use of CentOS name and logo
by Giacomo Sanchietti 16 Jan '13

16 Jan '13

Hi. my name is Giacomo Sanchietti and I'm working for a company called Nethesis. We are working on a CentOS derived distribution like SME Server. It's a minimal CentOS with a software layer on top to add a web configuration interface. The CD iso, it's a CentOS minimal CD with some extras packages from centos-base yum group, and a kickstart file to automatize the installation process. We did not rebrand anaconda, so during installation (and first boot) CentOS logo and name will be visible. Is this a problem? Are there any legal issues? Do we need to rebrand all the distro? Thank you -- Giacomo Sanchietti Nethesis srl Via degli Olmi 12 - 61122 Pesaro (PU) tel. +39 0721 405516 - fax +39 0721 268147 www.nethesis.it - supporto(a)nethesis.it

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Off-Topic: Low Power Hardware
by SilverTip257 16 Jan '13

16 Jan '13

Hello, I'm slightly off-topic here, but it is somewhat CentOS related! I'm in search of some hardware that consumes a low amount of power for use as a test-bed for Linux, various coding projects, and LAN services. 1) Low power consumption (10-15W ... maybe 30W at most) 2) Must run Linux without too much fuss (CentOS or otherwise) 3) Must have two NICs (fast ethernet or better) 4) Memory - 1GB or better 5) Can be configurable either via serial or VGA. 6) Accepts a normal hard drive, not CF -- drive capacity is my concern. 7) spare PCI slot is a _plus_ (extra NICs or whatever else) 8) I'd like to keep the physical footprint to a minimum (size of a 1U switch or so?) Old Sun/Cobalt hardware (Raq4) from the early 2000s was brought to my attention by a friend, but that hardware is in low supply and the prices are outrageous for the specs/age of machine. *** I'm curious if there's certain hardware that you folks are using and fit all/most of my criteria. *** It would be cool if they made a Raspberry Pi with dual onboard NICs, but it still doesn't cut it since it takes SD cards and not a hard drive. Have a great Friday! Thanks for any feedback. -- ---~~.~~--- Mike // SilverTip257 //

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Re: [CentOS] Using postfix in CentOS 6 to relay mails to First.Last@gmail.com
by Alexander Farber 16 Jan '13

16 Jan '13

Hello - On Tue, Jan 15, 2013 at 3:05 PM, Wietse Venema <wietse(a)porcupine.org> wrote: > http://www.postfix.org/BASIC_CONFIGURATION_README.html with CentOS 6 I've ended up adding inet_interfaces = all virtual_alias_domains = videoskat.de balkan-preferans.de to /etc/postfix/main.cf and @balkan-preferans.de First.Last(a)gmail.com @videoskat.de First.Last(a)gmail.com to /etc/postfix/virtual and then # postmap /etc/postfix/virtual # service reload postfix I've found that in http://www.postfix.org/VIRTUAL_README.html#virtual_alias Thanks Alex

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Adding CA/Root SSL / TLS Certificate, HTTPS
by Bry8 Star 16 Jan '13

16 Jan '13

Hi, I need to add my own and other/new self-signed ca/root cert in CentOS pki database/system, for all/most type of apps to use. Using "wget", i'm trying to securely(HTTPS) get gpg keys/files from https://fedoraproject.org/keys site, which is using root cert with following info: CN = GeoTrust Global CA O = GeoTrust Inc. C= US MD5 f7:75:ab:29:fb:51:4e:b7:77:5e:ff:05:3c:99:8e:f5 I have tried: wget https://fedoraproject.org/static/DE7F38BD.txt But 'wget' showed following warning, its not able to verify cert & failing to download file over HTTPS : [wget msg] ... Connecting to fedoraproject.org|85.236.55.6|:443... connected. ERROR: certificate common name *.fedoraproject.org fedoraproject.org To connect to fedoraproject.org insecurely, use --no-check-certificate. [end of wget msg] Also tried: rpm --import https://fedoraproject.org/static/DE7F38BD.txt but no new gpg key inside the /etc/pki/rpm-gpg directory HOW TO MANUALLY ADD CA/ROOT CERT IN CENTOS ? (as I need to add OTHER self-signed root cert in CentOS pki database, for all apps to use). so that wget, rpm or other apps can use them without warning. if a self-signed CA/root cert is added in /etc/nssdb/cert8.db then would it allow apps which use nssdb, to use the new root cert automatically ? how to manually add new root cert inside cert8.db or cert9.db ? is it using sqlite ? and, if a self-signed CA/root cert is added inside /etc/pki/tls/certs/ca-bundle.trust.crt or in /etc/pki/tls/certs/ca-bundle.crt then would that allow apps which use it to automatically use this/these CA-bundles ? what apps can be used to manually add more CA/root certs in those bundles ? can OpenSSL or GnuTLS be used to print out root cert in the format (compatible with and) which can be added inside those CA-bundles ? Thank you (in advance), -- Bright Star.

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Storing and restoring sound settings
by Mogens Kjaer 16 Jan '13

16 Jan '13

Hello, I have made a bootable CD (with revisor) of CentOS 6. The CD boots and starts a game automatically (for an exhibition). I have one problem: The default sound settings are not correct. After the machine is booted, I have to open gnome-volume-control, select "Hardware", and select "Digital Stereo (HDMI) Output" under "Profile". How can I set this up automatically? I've tried "alsactl store" and putting the generated asound.state on the CD, but that doesn't help. Mogens -- Mogens Kjaer, mk(a)lemo.dk http://www.lemo.dk

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Minimum requirements for CentOS 4,5,6
by Andrew S Reis 15 Jan '13

15 Jan '13

Hey everyone, I'm trying to compile a document to send out to our customers that outlines the minimum and recommended requirements to run C4, C5, and C6. Does anyone know the particulars? When we order systems, it's usually Pentium Dual Core CPU, 120GB+ Hard drive, 2GB Ram. I need the ABSOLUTE MINIMUM requirements to install and run any of the aforementioned flavors as a "basic server". Thanks, Andrew Reis | MCTS, Network+ Microsoft Windows/Networking Support Webmaster DBMS Inc.

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Using postfix in CentOS 6 to relay mails to First.Last@gmail.com
by Alexander Farber 15 Jan '13

15 Jan '13

Hello fellow CentOS users, I'm using: # cat /etc/*release CentOS release 6.3 (Final) # rpm -qa | grep post postfix-2.6.6-2.2.el6_1.x86_64 on 2 servers: preferans.de and (yes, funny name) static.103.78.9.176.clients.your-server.de I own several domains and would like all incoming mails addressing those domains to be forwarded to my Gmail address. So I have setup the MX-records for my domains: # host videoskat.de videoskat.de has address 176.9.40.169 videoskat.de mail is handled by 100 static.103.78.9.176.clients.your-server.de. videoskat.de mail is handled by 10 preferans.de. # host balkan-preferans.de balkan-preferans.de has address 176.9.40.169 balkan-preferans.de mail is handled by 100 static.103.78.9.176.clients.your-server.de. balkan-preferans.de mail is handled by 10 preferans.de. And at the both servers I have added: # head /etc/postfix/virtual @balkan-preferans.de First.Last(a)gmail.com @videoskat.de First.Last(a)gmail.com # postmap /etc/postfix/virtual # postmap -q "@videoskat.de" /etc/postfix/virtual First.Last(a)gmail.com And have opened port 25 in the firewall: # grep -w 25 /etc/sysconfig/iptables -A INPUT -p tcp -m state --state NEW -m tcp -m multiport --dports 25,22 -j ACCEPT But now when I send a mail to spam(a)videoskat.de there is nothing to see in postfix logs: # sudo tail /var/log/maillog Jan 15 10:50:42 postfix/postfix-script[1401]: starting the Postfix mail system Jan 15 10:50:42 postfix/master[1402]: daemon started -- version 2.6.6, configuration /etc/postfix So I'm probably missing something? BTW the daily logwatch mails arrive from both servers just fine at my Gmail-mailbox First.Last(a)gmail.com Regards Alex

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Is there a way to bypass the memory check for the cento6 x86 installer?
by Jason Pyeron 14 Jan '13

14 Jan '13

I am getting the "you do not have enough RAM to install CentOS on this machine." error. I could mannually kludge this system online, but I would prefer not to. -Jason -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Principal Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - - - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This message is copyright PD Inc, subject to license 20080407P00.

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Quesstion on "remote password for maintenance"
by Jerry Geis 14 Jan '13

14 Jan '13

I have a remote "centos 5" box that has no errors on screen, has nothing saying anything is wrong, however at boot it says "give remote password for maintenance". I had my remote person login and issue "e2fsck -y /dev/sda1 and /dev/sda3" for my two partitions and reboot and it comes back with the same prompt. What maintenace is it wanting???? Thanks, jerry

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wiping out data on a disk (no physical acess to the machine)
by Yungwei Chen 14 Jan '13

14 Jan '13

Hi, I need to securely wipe out a disk on a remote machine, but I don't have access to that machine. Therefore I cannot use the LiveCD+shred (or dd) combination. Besides manually shreding known data files, I am wondering if there is a (free) tool that can be used in my case. Thanks.

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