Discuss June 2014

discuss@lists.centos.org

122 participants
119 discussions

Re: [CentOS] Loss of Ethernet adaptor
by James B. Byrne 09 Jun '14

09 Jun '14

On Mon, June 9, 2014 11:46, Steve Clark wrote: > > Hi, > > Don't know if you saw my prior email, but we experienced this exact same > problem see log excerpts below: > ... > Jul 31 17:05:18 wolfpac kernel: pciehp 0000:00:1c.5:pcie04: Card not present > on Slot(37) > Jul 31 17:05:18 wolfpac kernel: pciehp 0000:00:1c.5:pcie04: Card present on > Slot(37) > Jul 31 17:05:18 wolfpac kernel: device eth5 left promiscuous mode > Jul 31 17:05:19 wolfpac kernel: e1000e 0000:07:00.0: PCI INT A disabled > Jul 31 17:05:20 wolfpac ntpd[2726]: Deleting interface #7 eth5, > 192.168.198.95#123, interface stats: received=517, sent=522, dropped=0, > active_time=108106 secs > Jul 31 17:05:20 wolfpac ntpd[2726]: Deleting interface #8 eth5, > fe80::290:bff:fe2a:acf3#123, interface stats: received=0, sent=0, dropped=0, > active_time=108039 secs > ... > > This would randomly happen on systems that weren't connected directly to the > internet. > We experienced this on multiple systems. Since we upgraded to the latest > elrepo driver and added > pcie_aspm=off to our kernel command line we have never experienced the issue > again. Thank you. I did get your message and I simply have not had time to test its implementation as it necessarily involves a restart of the test system. I am trying to discover if there is some way of restarting a headless server and use a specific grub entry instead of the default. I want to leave the default unchanged until I can prove that any manual changes I make do not negatively impact a system restart. If anyone knows if this is possible and if so, how it is done, I would welcome the information. Regards, -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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Re: [CentOS] Loss of Ethernet adaptor
by James B. Byrne 09 Jun '14

09 Jun '14

On Fri, June 6, 2014 09:58, Alexander Dalloz wrote: > Am 06.06.2014 14:50, schrieb James B. Byrne: >> At ~07:40 (UTC-4:00) this morning our gateway host lost its WAN Ethernet >> adaptor. Subsequent to recovery, which required a reboot, the following > > [ ... ] > >> lspci -tv # provides this device tree >> >> -[0000:00]-+-00.0 Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx DMI >> Bridge >> . . . >> +-1c.0-[01]-- >> +-1c.4-[02]----00.0 Intel Corporation 82574L Gigabit Network >> Connection >> +-1c.5-[03]----00.0 Intel Corporation 82574L Gigabit Network >> Connection >> . . . >> >> >> >> lspci -v -nn -k -qq -D # provides this information: >> >> . . . >> 0000:02:00.0 Ethernet controller [0200]: Intel Corporation 82574L Gigabit >> Network Connection [8086:10d3] >> Subsystem: Super Micro Computer Inc Device [15d9:10d3] >> Physical Slot: 0-1 >> Flags: bus master, fast devsel, latency 0, IRQ 16 >> Memory at fe9e0000 (32-bit, non-prefetchable) [size=128K] >> I/O ports at dc00 [size=32] >> Memory at fe9dc000 (32-bit, non-prefetchable) [size=16K] >> Capabilities: [c8] Power Management version 2 >> Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+ >> Capabilities: [e0] Express Endpoint, MSI 00 >> Capabilities: [a0] MSI-X: Enable+ Count=5 Masked- >> Capabilities: [100] Advanced Error Reporting >> Capabilities: [140] Device Serial Number 00-25-90-ff-ff-61-74-c0 >> Kernel driver in use: e1000e >> Kernel modules: e1000e >> . . . >> >> I have never run into this before. Can anyone cast any light on what might >> be >> going on? Is this an incipient hardware failure with one of the on-board >> PCI >> Ethernet adaptors? Is there any relationship with the syn flood that was >> blacklisted immediately before the failure? I do not thinks so but I need >> to >> ask. >> >> Thanks, > > https://isc.sans.edu/forums/diary/Intel+Network+Card+82574L+Packet+of+Death… > > http://www.itwalker3.com/2013/02/packet-of-death-attack-a-deadly-dos-agains… > > Worth to verify in your case. > > Alexander > > > Re: Packet of Death attack: a deadly DoS against Intel NICs It appears that my problem is caused by something else as the EPROM fingerprint matches the 'good' version (mostly). ethtool -e eth0 . . . 0x0010:01 01 ff ff 6b 02 d3 10 d9 15 d3 10 ff ff 58 a5 . . . 0x0030:c9 6c 50 31 3e 07 0b 46 84 2d 40 01 00 f0 06 07 . . . However this matches neither the known 'bad' nor the reputed 'good' EPROM image: 0x0060:00 01 ff ff ff ff ff ff ff ff ff ff ff ff ff ff But it seems a lot closer to the 'bad: 0×0060:ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff than to the 'good': 0×0060:20 01 00 40 16 13 ff ff ff ff ff ff ff ff ff ff I cannot find the file pod-icmp-ping.pcap so I cannot try out the recommended test using tcpreplay. The original Google code page reference is now gone. However, ping -p 32 -s 1110 192.168.99.1 against the on-board nic adaptors does not shut them down. I infer (so long as there is no great delay between sending the packet of death and its effects made manifest) that this means that the POD was not the cause of our recent difficulty. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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Suggestiong for a tablet computer to run Centos-6/7?
by James B. Byrne 09 Jun '14

09 Jun '14

I have an iPad Air. Nice kit and good battery life but experience has shown the iPad is just a little too opaque and network dependent for my taste. I was wondering if there existed a similarly sized/robust tablet that can run CentOS-6/7 that anyone would recommend? I am looking from something that I can take on international trips that I can scrub on a regular basis. But, I also desire the software that I am familiar with (CentOS, SSH, Open/Libre-Office, Inkscape, Tor Browser, Jitsi, etc.). I do not really need a GarageBand/iTunes replacement. But I do want a USB connection and the ability to run stock CentOS, not some specialised fork thereof. I did the Google thing but that has not provided me any clear recommendations. Ubuntu seems to be the most popular distribution for these things and I am reluctant to invest the time to learn the idiosyncrasies of yet another Linux distribution. Does anyone here have any experience with this type of CentOS setup? -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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Upgrading openssl to openssl-1.0.1e-16.el6_5.7.x86_64
by srikanth chakravarthula 09 Jun '14

09 Jun '14

Hi, Can we upgrade the OpenSSL version on earlier CentOS Versions 6.2/6.3/6.4 with the latest Openssl version which has all the latest openssl vulnerability fixes from Cent OS repo. Will there be any dependency with the openssl version with CentOS versions upgrading openssl 1.0.0 to openssl 1.0.1e latest version. Can we upgrade with the latest OPENSSL version on older CentOS Versions as there are no updates from CentOS for the older versions of openssl's. Thanks, Srikanth

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centos livecd for latest centos 5-release?
by Eero Volotinen 08 Jun '14

08 Jun '14

Hi, Is this kind of available? so, where I can download it? -- Eero

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centos security alerts via email
by Eero Volotinen 08 Jun '14

08 Jun '14

Hi, Is there way to subscribe centos security alerts via email? like: http://lwn.net/Alerts/CentOS/ -- Eero

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Create Virtual Machine via HTTP or FTP
by cbulist＠gmail.com 08 Jun '14

08 Jun '14

Hi, I'm trying to create a Virtual Machine using Network Install mode (I tried HTTP and FTP). The HTTP/FTP server where the installation files are located is the Host Machine. The URL that I'm using is: http://192.168.1.104/inst and the Automatic detect option detects the OS without problem. When the installation starts I got an error: Unable to retrieve http://192.168.1.104/inst/images/install.img I tried different path but I always get the same error. The host machine is a Centos 6.2 (2.6.32.-220.el6.x86_64) I really appreciate any help with this problem. Thanks in advance,

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Where to change login screen options
by Wes James 07 Jun '14

07 Jun '14

I've looked around in the menus and googled this, but I can't find a way to make the login require a username instead of just showing the available users to select from. Where do I change this? I'm using CentOS 6.5. Thanks, -wes

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Analyzing the MBR
by Timothy Murphy 07 Jun '14

07 Jun '14

Is there any tool for analysing the MBR on a computer? I know one can just dd it and see roughly what it contains. But surely one should be able to work out the exact content of the MBR and the neighbouring sectors read at boot time? I had a difficult day, probably due to my ignorance, which would have been solved at once by such a tool. I had taken one of three hard disks out of my home server (to see exactly what it was, as smartctl said it was not in its database) and this had the effect of altering the order of the disks in the BIOS, preventing re-booting. It was only after I had re-installed CentOS in a spare partition that I realized what had happened. Incidentally, before this I had tried what I take to be the standard way of solving this problem, by running a CentOS Live USB stick, mounting the root partition and trying to chroot to this, but that did not work - chroot on the stick would not run, and neither would chroot on the disk. I'm wondering if there was some other method I could have tried? For example, I tried running a Fedora netinstall USB stick, which has a "Try to repair the system" option in Troubleshooting. This saw the system OK, but did not have grub-install on it. As far as I could see, none of the CentOS install disks has such a tool on it? -- Timothy Murphy e-mail: gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin 2, Ireland

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Re: [CentOS] [CentOS-announce] CESA-2014:0626 Important CentOS 5 openssl097a Update
by Joe Pruett 06 Jun '14

06 Jun '14

what about RHSA-2014:0624-1? On 06/05/2014 06:38 AM, Karanbir Singh wrote: > CentOS Errata and Security Advisory 2014:0626 Important > > Upstream details at : https://rhn.redhat.com/errata/RHSA-2014-0626.html > > The following updated files have been uploaded and are currently > syncing to the mirrors: ( sha256sum Filename ) > > i386: > 28a83a987c35bf2297a33d7e75703d345953cbb4ab2033f2e06a8be94b7ded0e openssl097a-0.9.7a-12.el5_10.1.i386.rpm > > x86_64: > 28a83a987c35bf2297a33d7e75703d345953cbb4ab2033f2e06a8be94b7ded0e openssl097a-0.9.7a-12.el5_10.1.i386.rpm > 56e0b690fa9182cc84f3ae8d7a0062cb0789b0f4a39045953eae63419f5dbb57 openssl097a-0.9.7a-12.el5_10.1.x86_64.rpm > > Source: > 995d2c032cde0e3249e21f266e726217cbfe4ae7a0ed034855e4bc981407a890 openssl097a-0.9.7a-12.el5_10.1.src.rpm > > >

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Discuss June 2014