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Disable Kernel Screen Blanker
by Mark LaPierre 13 Aug '13

13 Aug '13

Hey Y'all, I'm trying to turn off the kernel screen blanker that shuts off the video after about 10 minutes of inactivity at the keyboard. After extensive googling I've found two ways to *NOT* do it. In my home .xinitrc setterm -blank 0 -powersave off -powerdown 0 xset s off In /etc/rc.local /usr/bin/setterm -powersave off -blank 0 I've tried both to no effect. Of course I've turned off the screen saver in the Gnome desktop. How do I stop this machine from blanking the screen with no activity? I want video full time! I know someone is going to ask, "Why do you want to do that?", so to save you from asking. 1. I'm setting up a kiosk that customers can use interactively. It's not very inviting to passers by when the screen is blank. 2. I want to watch movies and Skype without having to poke the mouse all the time. 3. My monitor is very unhappy when the video signal is cut off. 4. My wife is very unhappy when the screen goes blank. 5. Insert your reason here. I just want it to stop. ;-) -- _ °v° /(_)\ ^ ^ Mark LaPierre Registered Linux user No #267004 https://linuxcounter.net/ ****

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Motherboard and chipset compatibility
by Glenn Eychaner 13 Aug '13

13 Aug '13

So, having returned from a month's vacation, I'm back to work on attempting to build a set of small form factor CentOS compatible computers. I've really tried to do my homework, but this doesn't appear (at first glance) to be at all easy. It's not made easier by the fact that I have to get it right the first time (and I haven't built a PC in a decade); the time and money cost of shipping anything to and from my remote location in Chile means I can't afford to waste time buying and returning things. First question: does anyone have any experience with the Jetway NF9E-Q77 or ZOTAC Z77ITX-A-E motherboards? Having struck out on Intel Q77 or Z77-based SFF motherboards (the DQ77** series is completely out of stock everywhere, and the DZ77** series is ATX only), I have found a couple of Mini-ITX systems based on these two motherboards. Second question: Where can I get information about which Intel chipsets (Z77 vs Z87 vs Q77 vs C602 vs ...geez, there are a LOT of chipsets, as evidenced by http://www.supermicro.com/support/faqs/os.cfm) are supported by CentOS 6 / RHEL 6? I have not been able to find this information on either the Intel, RedHat, or CentOS web sites. Third (more general) question: My requirements are (I believe) modest: * 1U short-depth rackmount chassis OR Mini-ITX small-footprint chassis * Dual GbE network ports * Dual 1920x1200 monitor display * One SSD drive * 32-bit CentOS 6.4 compatible. It's the combination of the first, third, and fifth requirements that really seems to get me hung up. I've found plenty of 1U server systems (such as SuperMicro), but none of them support dual displays. (Some of them have a PCIe16x riser card that could conceivably accomodate a separate graphics card, assuming I could find one that fits; I have Emails in to various tech supports to inquire about this. I've found LOTS of 2U solutions, thanks, but only have 1U of available rack.) As far as Linux support goes, the RHEL Hardware List has thus far been pretty useless (much of the hardware on it is obsolete or discontinued), and most manufacturers' web sites have been equally useless. (One exception being ASUS, which has a Linux-compatibility list at http://www.asus.com/websites/global/aboutasus/OS/Linux.pdf SuperMicro has a very nice list referenced above, but none of their small form factor motherboards support dual displays AFAICT; I have found nothing useful at Intel's site.) Does anyone have any resources they'd like to point me to? Thanks, -G. -- Glenn Eychaner (geychaner(a)lco.cl) Telescope Systems Programmer, Las Campanas Observatory

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CentOS-announce Digest, Vol 102, Issue 8
by centos-announce-request＠centos.org 13 Aug '13

13 Aug '13

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. CEBA-2013:1150 CentOS 6 net-snmp Update (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Mon, 12 Aug 2013 15:29:24 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2013:1150 CentOS 6 net-snmp Update To: centos-announce(a)centos.org Message-ID: <20130812152924.GA37081(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2013:1150 Upstream details at : https://rhn.redhat.com/errata/RHBA-2013-1150.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 606041c5872c2b5a5a8ca488305158e78465f9d5a3b6776aa553e8c6c92b9d25 net-snmp-5.5-44.el6_4.4.i686.rpm d8e18d917a5a81ecf05e60ae369b56af25c3f9be4f0fc031dff3f25cebcc496d net-snmp-devel-5.5-44.el6_4.4.i686.rpm f7a5987f31139adc57b2bb7f9253f1743e744c994878f819dd7c4f579342199c net-snmp-libs-5.5-44.el6_4.4.i686.rpm 61b99be57ebb9cd9c35b58e23f571e6ae69202e035b1c61b8f6fe3b6d9e6710d net-snmp-perl-5.5-44.el6_4.4.i686.rpm 9401fc52b8d693cbf3fb6d00d0f5f159d4b16bff3993e9d3eab2a01ef7646a51 net-snmp-python-5.5-44.el6_4.4.i686.rpm b77afc1467b1a6905fe19e6526f19806bcba2c53131d441beed0fbad841dbc09 net-snmp-utils-5.5-44.el6_4.4.i686.rpm x86_64: 672a34dc2c1157f8d6fda74ca9147c8b6ca1b038c3314722a85e8c7ce4a9da7c net-snmp-5.5-44.el6_4.4.x86_64.rpm d8e18d917a5a81ecf05e60ae369b56af25c3f9be4f0fc031dff3f25cebcc496d net-snmp-devel-5.5-44.el6_4.4.i686.rpm e5f0568ccf34534f3a4d287f7dfbe671b92e36c08e4cc58ec98fb79b8efeffc1 net-snmp-devel-5.5-44.el6_4.4.x86_64.rpm f7a5987f31139adc57b2bb7f9253f1743e744c994878f819dd7c4f579342199c net-snmp-libs-5.5-44.el6_4.4.i686.rpm 0525e208baa1e9b179d2007006e1820fd29e5a5ccfec7193c4e043f69cf76b19 net-snmp-libs-5.5-44.el6_4.4.x86_64.rpm 910a2f63360e54a6068477abf40f2060e4020c4042d980ebf7fa1760325354b9 net-snmp-perl-5.5-44.el6_4.4.x86_64.rpm 977617aa242b83fb53a57493118d02dae66ef8e60f475888bfa23c5ed8b02191 net-snmp-python-5.5-44.el6_4.4.x86_64.rpm f018a0239911aa3606374fa3d97358227dea691e584a5cf2897b573dd18d5325 net-snmp-utils-5.5-44.el6_4.4.x86_64.rpm Source: 5d5de79fa0097916bcc39a39091e27f8b48cca9633c6eb52891627bba3db9652 net-snmp-5.5-44.el6_4.4.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 102, Issue 8 ***********************************************

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Re: [CentOS] Motherboard and chipset compatibility
by Glenn Eychaner 12 Aug '13

12 Aug '13

> > Since the reqirements are (relatively) modest (except those two), I was > > hoping to squeeze something in. > > how about an ultrasmall form factor desktop, such as the Dell Optiplex > 7010 USFF ? those have dual displayport outputs (requires $7 optional > video output panel), and are 24x6.5x24cm I didn't even know that the Optiplex 7010 was CentOS compatible (though someone may have mentioned it in my previous thread); it is not on the RedHat Hardware List, not does Dell's web site go out of its way to mention it. Again, how does one find this kind of thing out? There has to be a better solution than 3 days of web searches, Emails to tech support, and forum posts. In addition, the USFF Optiplex seems to be limited to a Core i3 processor and a mere 2GB of memory, which while acceptable is not optimal (and worse than some other solutions I'm looking at). And for everyone suggesting KVMs, VMs, SSH, or other solutions...this is a telescope operations system, so none of those are really appropriate to the task, I'm afraid. I really want direct monitor/keyboard/mouse connections (and yes, I keep a hotspare warmed up at all times in case of a critical failure, and have had to use it on more than one occasion). And I'm sorry my postings don't seem to thread right in the archives. I subscribe to the Digest form orf the list and am compiling these replies using the web archives. Anyway, -G. -- Glenn Eychaner (geychaner(a)lco.cl) Telescope Systems Programmer, Las Campanas Observatory

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Dell R515 with PERC H700 - JBOD?
by Joseph Spenner 12 Aug '13

12 Aug '13

Hello, I'm curiuos if anyone knows if it's possible to set up a Dell R515 (which has PERC H700) to be JBOD. It seems the only options are RAID0 or RAID1. I read posts, where people say it can by done by making each disk its own RAID0. This works, but it wigs out when that disk is removed, and forgets a disk was ever there (unless I go back in the PERC and fix it). My plan is to have a system where I can remove and replace the drives regularly, while the system is on/running. I do this on a SuperMicro, but wanted to migrate this server to a Dell. I tried disabling the RAID in the BIOS, but then the installer never sees the disks. Any ideas would be great. Thanks! Regards, Joseph Spenner ______________________________________________________________________ If life gives you lemons, keep them-- because hey.. free lemons. "♥ Sticker" fixer: http://microflush.org/stuff/stickers/heartFix.html

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Re: [CentOS] Motherboard and chipset compatibility
by Glenn Eychaner 12 Aug '13

12 Aug '13

John R Pierce wrote: > On 8/12/2013 9:14 AM, Glenn Eychaner wrote: > > * 1U short-depth rackmount chassis OR Mini-ITX small-footprint chassis > > * Dual 1920x1200 monitor display > > those two requirements together are unusual. most rackmount 1U systems > are headless, except a basic VGA for initial configuration. > dual display is generally found on a desktop system. I agree. In this case, the floor is not the best environment for the equipment, the adjacent rack has only 1U of short-depth rack space available, and the desktop is already crowded with keyboards and monitors. Since the reqirements are (relatively) modest (except those two), I was hoping to squeeze something in. Looks like I'm out of luck, and buying another full tower to hold a motherboard, a disk drive, and one expansion card. Sigh. -G. -- Glenn Eychaner (geychaner(a)lco.cl) Telescope Systems Programmer, Las Campanas Observatory

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Re: [CentOS] Motherboard and chipset compatibility
by Glenn Eychaner 12 Aug '13

12 Aug '13

m.roth at 5-cent.us wrote: > Now, about what you're looking to build - you say that you want 1U, and > mention rackspace: in my experience, rackmounts are a *lot* larger than a > pizza box, so I'm a little confused at the requirements you're building > for. The rack is already full; I only get that 1U of space by removing a spare part to another location, and unfortunately, I have a depth limit due to the power distribution module on the rack rear. These computers are replacing tower PCs that sit on the floor under a desk in a rather hostile environment, so I'd like to move them to either the desktop or the adjacent rack, but have limited space in either location (1U of short-depth rack or about room for a miniITX box on the desk). -G. -- Glenn Eychaner (geychaner(a)lco.cl) Telescope Systems Programmer, Las Campanas Observatory

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bonding interface instable
by Leon Fauster 12 Aug '13

12 Aug '13

Hi all, i recently found that some frontend servers (Centos6) show: kernel: bonding: bond0: link status definitely up for interface eth2. kernel: bonding: bond0: link status definitely down for interface eth2, disabling it kernel: bonding: bond0: link status definitely up for interface eth2. On some days frequently and on others none. But there is no hw failure or similar. $ cat /sys/devices/virtual/net/bond0/bonding/{mode,arp_validate} active-backup 1 active 1 $ cat /etc/sysconfig/network-scripts/ifcfg-bond0 DEVICE=bond0 BOOTPROTO=static IPADDR=MYIP NETMASK=MYMASK NETWORK=MYNET BROADCAST=MYCAST ONBOOT=yes TYPE=Ethernet BONDING_OPTS="mode=1 arp_interval=500 arp_validate=1 arp_ip_target=GATEIP,GATE2IP primary=eth0" $ cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009) Bonding Mode: fault-tolerance (active-backup) Primary Slave: eth0 (primary_reselect always) Currently Active Slave: eth0 MII Status: up MII Polling Interval (ms): 0 Up Delay (ms): 0 Down Delay (ms): 0 ARP Polling Interval (ms): 500 ARP IP target/s (n.n.n.n form): GATEIP, GATE2IP Slave Interface: eth0 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 31 Permanent HW addr: MACADDR Slave queue ID: 0 Slave Interface: eth2 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 1 Permanent HW addr: MACADDR Slave queue ID: 0 Device module tg3: $ cat /sys/module/tg3/version 3.124 Any ideas or same experiences out there? Thanks LF

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compile paramaters
by Rita 11 Aug '13

11 Aug '13

hi, I am trying to find out what compile flags and environment variables were used when compiling the python package. Is there an easy way of figuring this out? perhaps a website which shows the RPM specs? -- --- Get your facts first, then you can distort them as you please.--

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Openssl vulnerability - SSL/ TLS Renegotion Handshakes
by Anumeha Prasad 11 Aug '13

11 Aug '13

Hi, I'm currently at CentOS 5.8. I'm using openssl version openssl-0.9.8e-22.el5. The following vulnerability was reported by a Nessus security scan: "SSL/ TLS Renegotion Handshakes MiTm Plaintext Data Injection" As per following link, Redhat has introduced openssl-0.9.8m which fixes this specific issue: https://access.redhat.com/site/articles/20490#Updates_adding_RFC_5746_suppo… I created rpm for openssl-0.9.8m using tarball and when I tried to install it, I got "libssl.so.6()(64bit) is needed by <rpm name>" errors which would be solved by installing openssl098e rpm. This rpm is a part of CentOS 6 and so I can't install it. Do we have openssl-0.9.8m or higher rpm available for CentOS 5? Or any other way I could resolve errors "libssl.so.6()(64bit) is needed by <rpm name>"? Or any suggestions on the mentioned "SSL/ TLS Renegotion Handshakes" vulnerability? Thanks, Anumeha

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