Discuss

discuss@lists.centos.org

1 participants
34753 discussions

Re: [CentOS] Re: Opteron Mobo Suggestions
by Bryan J. Smith <b.j.smith＠ieee.org> 24 Jun '05

24 Jun '05

From: Kirk Bocek <t004(a)kbocek.com> > Yes, I understand. I also don't have an unlimited budget > If I can get most of the benefit without needing a $300-800 > add-on, that's a big plus. You're talking about an $500-600 mainboard. Then you're talking about $500-800 _per_ dual-core CPU. And then you're gotta factor in the Registered ECC RAM costs. And you're worried about a $125 (3Ware Escalade 8006-2) or $300 (3Ware Escalade 8506-4) controller? Furthermore, the SATA on the nForce MCP is typically only a single, 133MBps PCIe x1 channel. You'll get 533MBps out of the 8506-4 in a PCI slot at 64-bit @ 66MHz. > I conceptually understand iSCSI, but how would I use a GbE > NIC in a backup solution? What do you think iSCSI is? It's storage over IP, but just with an additional a host processor in the GbE to off-load overhead. If you don't have the money for a HBA GbE, then just do straight GbE. Build an out-of-band IP network segmented off on a 2nd GbE connection in each system. [ HINT: I'm exploring the issues of real-time backup and discuss near-line storage, virtual tape libraries and, in a future article after that, out-of-band networks and "cheap" SANs. All from the standpoint of a sysadmin, and not so much network/storage engineering. ] > Don't forget that a backup solution would depend on > hot-pluggability. That's why I was thinking of USB/IEEE- > 1394. Mistake on a server. You don't want to hot-plug consumer interconnects. One issue, bam! Kernel panic. Use an out-of-band IP network over a 2nd GbE connection to what you need elsewhere on the network. I have been recommending this where cost is a factor. > Cool, I will take a look at HP's offerings. Do you have any > motherboards alone that you would recommend? It's difficult because of the limited designs. A lot of mainboards "cut corners" for cost considerations. Even the Tyan 4885 puts _all_ I/O on _one_ CPU. The HP DL585 follows the AMD reference. -- Bryan J. Smith mailto:b.j.smith@ieee.org

5 5

Betr.: [CentOS] Multiple IP Addresses in a single NIC
by Thom van der Boon 24 Jun '05

24 Jun '05

Hi, You need to issue two commands: /sbin/ifconfig eth0:0 xxx.xxx.xxx.xxx /sbin/route add -host xxx.xxx.xxx.xxx dev eth0 For example: /sbin/ifconfig eth0:0 172.16.1.199 /sbin/route add -host 172.16.1.199 dev eth0 You can even assign multiple aliases to one NIC (One of my servers has about 10 ip addresses): For example: /sbin/ifconfig eth0:0 172.16.1.199 /sbin/route add -host 172.16.1.199 dev eth0 /sbin/ifconfig eth0:1 172.16.1.198 /sbin/route add -host 172.16.1.198 dev eth0 /sbin/ifconfig eth0:2 172.16.1.197 /sbin/route add -host 172.16.1.197 dev eth0 and so on..... You should write an startup script to execute these commands at boot time, because after a reboot the aliases are forgotten. Thom van der Boon E-Mail: Thom.van.der.Boon(a)vdb.nl ===== Thom.H. van der Boon b.v. Havens 563 Jan Evertsenweg 2-4 NL-3115 JA Schiedam Tel.: +31 (0)10 4272727 Fax: +31 (0)10 4736620 E-Mail: info(a)vdb.nl Home Page: http://www.vdb.nl/ >>> joao.c.medeiros(a)gmail.com 24.06.2005 00:28:01 >>> Hi all, I've been trying to add a second ip address to one of my network cards in my CentOS box. I've defined the alias on top of eth1 which has become eth1:1 with a different ip address. I can ping the new ip address both from my linux box as well as from my Windoze desktop, however I can only access my Apache web server setup as a virtual host from within the Linux box. If I try to access it from the desktop I get an "Operation Timeout..." error. I'm sure I missed out something really basic. Browsed Google and the CentOS mailing list (plus RH) and can't figure it out. Networking is not one of my best subjects... Someone care to shed some light or point me to a fairly decent link out there which covers this topic? TIA, --JM João Medeiros Linux User 381318 _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

4 5

CentOS-announce Digest, Vol 4, Issue 10
by centos-announce-request＠centos.org 24 Jun '05

24 Jun '05

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2005:524 Moderate CentOS 4 ia64 freeradius - security update (Pasi Pirhonen) 2. CESA-2005:498 Moderate CentOS 4 ia64 spamassassin - security update (Pasi Pirhonen) 3. CESA-2005:524 Moderate CentOS 3 ia64 freeradius - security update (Pasi Pirhonen) 4. CESA-2005:524 Moderate CentOS 4 x86_64 freeradius - security update (Johnny Hughes) 5. CESA-2005:524 Moderate CentOS 4 i386 freeradius - security update (Johnny Hughes) 6. CESA-2005:498 Moderate CentOS 4 i386 spamassassin - security update (Johnny Hughes) 7. CESA-2005:498 Moderate CentOS 4 x86_64 spamassassin - security update (Johnny Hughes) 8. CESA-2005:517 Critical CentOS 4 i386 HelixPlayer - security update (Johnny Hughes) 9. CESA-2005:517 Critical CentOS 4 x86_64 HelixPlayer - security update (Johnny Hughes) 10. CESA-2005:524 Moderate CentOS 3 s390(x) freeradius - security update (Pasi Pirhonen) ---------------------------------------------------------------------- Message: 1 Date: Thu, 23 Jun 2005 23:24:57 +0300 From: Pasi Pirhonen <upi(a)iki.fi> Subject: [CentOS-announce] CESA-2005:524 Moderate CentOS 4 ia64 freeradius - security update To: centos-announce(a)centos.org Message-ID: <20050623202457.GI21054(a)core.upi.iki.fi> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory 2005:524 https://rhn.redhat.com/errata/RHSA-2005-524.html The following updated files have been uploaded and are currently syncing to the mirrors: files: updates/ia64/RPMS/freeradius-1.0.1-3.RHEL4.ia64.rpm updates/ia64/RPMS/freeradius-mysql-1.0.1-3.RHEL4.ia64.rpm updates/ia64/RPMS/freeradius-postgresql-1.0.1-3.RHEL4.ia64.rpm updates/ia64/RPMS/freeradius-unixODBC-1.0.1-3.RHEL4.ia64.rpm -- Pasi Pirhonen - upi(a)iki.fi - http://iki.fi/upi/

1 0

Re: [CentOS] Re: Opteron Mobo Suggestions
by Bryan J. Smith <b.j.smith＠ieee.org> 24 Jun '05

24 Jun '05

From: Peter Arremann <loony(a)loonybin.org> > Better believe it - cause that's what they are doing :-) Actually, I can believe it (I just wish that had *1* good option). Tyan's focus is cost and economies-of-scale. You'll find the same of SuperMicro, among a few others. When you start looking at HP and Sun's Opteron designs, then the mainboard cost is only a portion of the system cost. So they are more focus on delivering the optimal solution. Because doing so only affects the end price less than 10%, whereas it might affect the mainboard cost 50%+. > Tyan doesn't lay out that many different boards from scratch... > just look at most of their stuff (S2892, S2885, S2882) - the > CPU/memory area is identical, so all they did was take the old > design, mod around with the chipset and PCI/PCI-X/PCI Express > slots and they got a new one... Actually, other than EMF and the support microelectronics, it's simply a matter of deciding how many traces you want, which may result in more PCB layers. Tyan is really focused on cost. They have an older, "cheap" 2-way Opteron mainboard that doesn't even put DDR channels on CPU #2. And several manufacturers are even worse than Tyan. Especially the non-server focused vendors. SuperMicro and Tyan are better than most. But still not the quality in mainboard design you'll get from select Tier-1 OEMs like HP and Sun. -- Bryan J. Smith mailto:b.j.smith@ieee.org

8 17

Moving Linux hard drive to another machine. Possible?
by Prasad Pillarisetti 24 Jun '05

24 Jun '05

I have a Linux server with 2 Hard disks (IDE). The machine went down and refuses to boot. I need to recover some data from one of the disks. Can I put this drive in a different Linux box and recover tha data I need. Thanks in advance, Prasad

3 3

Missing 4.1 SRPMS?
by James Pearson 24 Jun '05

24 Jun '05

I can't seem to find autofs-4.1.3-131.src.rpm on the download mirrors... I notice that there are not many SRPMS in the 4.1 /centos/4.1/os/SRPMS directory on the download mirrors - is this because most can be found under /centos/4.0/os/SRPMS and /centos/4.0/updates/SRPMS? - or should all the 4.1 SRPMS be in /centos/4.1/os/SRPMS ? Thanks James Pearson

8 11

Multiple IP Addresses in a single NIC
by Joao Medeiros 23 Jun '05

23 Jun '05

Hi all, I've been trying to add a second ip address to one of my network cards in my CentOS box. I've defined the alias on top of eth1 which has become eth1:1 with a different ip address. I can ping the new ip address both from my linux box as well as from my Windoze desktop, however I can only access my Apache web server setup as a virtual host from within the Linux box. If I try to access it from the desktop I get an "Operation Timeout..." error. I'm sure I missed out something really basic. Browsed Google and the CentOS mailing list (plus RH) and can't figure it out. Networking is not one of my best subjects... Someone care to shed some light or point me to a fairly decent link out there which covers this topic? TIA, --JM João Medeiros Linux User 381318

2 1

Re: Opteron Mobo Suggestions
by Bryan J. Smith <b.j.smith＠ieee.org> 23 Jun '05

23 Jun '05

From: Peter Arremann <loony(a)loonybin.org> > Actually, support for the 9500s has gotten quite a lot better over the past > few months - you might want to give them another try. A college of mine > mis-ordered a few of them when they first came out and at the beginning the > results were less than stallar. By now (FC4 and CentOS 4U1) the drivers are > stable enough that the tests I ran could no longer crash the box. That is good to here. My actual experience had been limited, but positive. But given the slew of issues, I just stopped recommending the 9500S until I heard otherwise. -- Bryan J. Smith mailto:b.j.smith@ieee.org

3 2

Build scripts for CentOS4?
by James Pearson 23 Jun '05

23 Jun '05

Are there any scripts available for rebuilding CentOS4 - or more specifically rebuilding a custom boot.iso? There is a /scripts directory on the download mirrors, but these scripts are specific to CentOS3/i386 Thanks James Pearson

2 2

Microcode error
by Adam Breaux 23 Jun '05

23 Jun '05

/etc/init.d/microcode_ctl start /etc/init.d/microcode_ctl: microcode device /dev/cpu/microcode doesn't exist? This is on a clean install from the 4.1 x86 ISO. This is the 2nd box that is reporting this error. Adam Breaux Sr. Network Administrator Domain Bank, Inc. 23 W 4th St. Bethlehem, PA 18015 Phone: 610.317.9606 Fax: 610.317.9570 abreaux(a)domainbank.com http://www.domainbank.com

2 1

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

Discuss