Discuss July 2013

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167 participants
150 discussions

HPN-SSH performance optimization?
by Ljubomir Ljubojevic 22 Jul '13

22 Jul '13

Hi. I wonder what is a current position on HPN-SSH patch for OpenSSH is? I have seen a progress was made, so I was wondering if that patch is safe enough and if anyone is building it? Maybe separate package to accept connections to special port for local network (without NFS/Samba)? It is supposed to provide up to 20x more speed over ssh. Homepage is here http://www.psc.edu/index.php/hpn-ssh Also, I heard about some additions to Openssh so that it can transport larger files without encryption? Was it added? -- Ljubomir Ljubojevic (Love is in the Air) PL Computers Serbia, Europe StarOS, Mikrotik and CentOS/RHEL/Linux consultant

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What does this error mean?
by Gilbert Sebenste 22 Jul '13

22 Jul '13

Hello everyone, It took a few reboots after installing the latest kernel (.14) to come back up. After it did, I saw this: WARNING: Kernel Errors Present nForce2_smbus 0000:00:0a.1: Error probing SMB1. Bad video card? my Nvidia has been working fine. No on-screen problems/issues noted. Gilbert ******************************************************************************* Gilbert Sebenste ******** (My opinions only!) ****** Staff Meteorologist, Northern Illinois University **** E-mail: sebenste(a)weather.admin.niu.edu *** web: http://weather.admin.niu.edu ** Twitter: http://www.twitter.com/NIU_Weather ** Facebook: http://www.facebook.com/niu.weather * *******************************************************************************

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Question about Red Hat beta
by Joe Keller 22 Jul '13

22 Jul '13

Does CentOS get an early version of a beta release from Red Hat or not? I assume select hardware vendors get early access but I didn't know who else. Thanks, Joe

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KDE frustrations, now
by m.roth＠5-cent.us 22 Jul '13

22 Jul '13

So I d/l gqview from where I found the rpm, and installed it. It didn't show in my kde menu, so I did something *really* dumb: I ran the kde menu updater. Now I can't lock my screen. Nothing at all happens. Nothing shows in .xsession-errors, nothing shows in /var/log/messages. I restored all of .kde/share from last night's backup... and the screensaver still doesn't go, and leave->lock screen still doesn't work... *and* gqview is still in my menu, which means that it's stored *somewhere*. I even reinstalled kde, and kde-settings, and some libs, and *still* no screensaver, and gqview's still on my menu. It's got to have been changed somewhere.... Any clues? mark

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Re: [CentOS] When no MTA is installed, How to send an email with a cronjob?
by Fred Smith 21 Jul '13

21 Jul '13

On Sun, Jul 21, 2013 at 02:16:50PM +0200, Reindl Harald wrote: > > > Am 21.07.2013 14:07, schrieb Fred Smith: > > There is a tool named SendEmail, which is a perl script that performs the > > sending side (not receiving) of SMTP email handling. It's straightforward > > to use via commandline, which is exactly what you would want to use from > > a cron job: > > > > http://caspian.dotconf.net/menu/Software/SendEmail/ > > and it has a queue or is it so simple-minded only to work if > all is perfect and if the smtp server it uses is not reachable > messages are silently lost? > > hence for such things virtually everybody installs postfix with > a minimal configuration and edits /etc/aliases with whatever > full qualified target for root I doubt it queues up mail, it's very simple and lightweight. It CAN be a useful tool for those who don't want a large and complicated program lurking there all the time. i've no clue how other mail handlers are configured, never having done it, but it for sure beats sendmail all hollow if all you want to do is send an occasional mail and can't wrap your mind around its configuration. Of course, no one is requiring you to use it. -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ---------------------------- Do you not know? Have you not heard? The LORD is the everlasting God, the Creator of the ends of the earth. He will not grow tired or weary, and his understanding no one can fathom. ----------------------------- Isaiah 40:28 (niv) -----------------------------

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Re: [CentOS] When no MTA is installed, How to send an email with a cronjob?
by Ben Mohilef 21 Jul '13

21 Jul '13

> Hi, > > When no MTA is installed, How to send an email with a cronjob? > > I have below entrty in my cronjob? > > my /etc/cron.d/backup file looks like this. > > MAILTO=myemail(a)example.com > 15 11 * * * root /root/scripts/backup.sh > > Can I send this email via SMTP server? > The following script works for us to send notifications to a mobile "server" that can not process very long text messages. Unless you have perfect control over who is allowed to use this script and what is being sent, it is VERY bad security practice. Replace the bracketed setup stuff (inside <> ) with the appropriate sources and destinations. "$argv" passess the raw data to be transmitted. Depending on what's in the message, you may have to modify the 3rd through 6th lines. YMMV. > #!/usr/bin/expect > > set idx [string first \{ $argv] > set argv [string replace $argv $idx $idx] > set idx [string last } $argv] > set argv [string replace $argv $idx $idx] > > spawn telnet <destination> 25 > set send_slow {1 .01} > set timeout 180 > > expect { > -re "Escape character is" { > exp_send -s "helo <destination_domainname >\n" > exp_continue > } > -re "220" { > exp_send -s "mail from: <me(a)mydomain.com>\n" > exp_continue > } > -re "250.*ender" { > exp_send "rcpt to:<recipient@destination_domainname>\n" > exp_continue > } > -re "250.*ecipient" { > exp_send -s "data\n" > exp_continue > } > -re "354" { > exp_send -s "Subject: <Subject>\n\n" > exp_send -s "$argv\n" > exp_send -s ".\n" > puts "sending\n" > exp_continue > } > -re "Message" { > exp_send -s "quit\n" > } > -re "221" { > puts "done\n" > } > }

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SSD support in C5 and C6
by Andrew Reis 21 Jul '13

21 Jul '13

Hey everyone, My company is beginning to look at using SSD drives in our CentOS based servers. Does C5 and C6 support TRIM and other "required" functions for the SSD to operate? Thanks, Andrew Reis Microsoft Certified Technology Specialist CompTIA Network+ Networking/Systems Analyst Webmaster DBMS Inc.

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Re: [CentOS] When no MTA is installed, How to send an email with a cronjob?
by Indunil Jayasooriya 21 Jul '13

21 Jul '13

> > > Can I send this email via SMTP server? > > > > > > You don't. > > You would have had to gone to some effort to not have an MTA > installed, as one is installed by default. Did you remove it (or > simply not configure it)? [they basically work for localhost > delivery without any changes.] > > CentOS 6 64 bit, zimbra is running with multi server setup. One mailbox and 2 mta servers. on mailbox server where no mta is installed, I want to backup mailboxes with a script. I have set it up to /etc/cron.d/backup file. After the backup, I want to an email to be sent to admin account. for the moment, I get an OUTPUT in this way. ( my /etc/cron.d/backup looks like this ) 35 13 * * * root /root/scripts/backup.sh > /tmp/backup.out 2>&1 I always login to the mailbox server and see the OUTPUT which is NOT so PERFECT. > You can't deliver to an "SMTP server" as, without an MTA, you have > no (real) way to talk to it. > > thanks for it. > > > -- Thank you Indunil Jayasooriya http://www.theravadanet.net/ http://www.siyabas.lk/sinhala_how_to_install.html - Download Sinhala Fonts

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CentOS-announce Digest, Vol 101, Issue 14
by centos-announce-request＠centos.org 20 Jul '13

20 Jul '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-2013:1097 CentOS 6 libtevent Update (Johnny Hughes) 2. CEBA-2013:X004 Xen4CentOS libvirt Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Fri, 19 Jul 2013 11:45:48 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2013:1097 CentOS 6 libtevent Update To: centos-announce(a)centos.org Message-ID: <20130719114548.GA52691(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2013:1097 Upstream details at : https://rhn.redhat.com/errata/RHBA-2013-1097.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: f4d9f615c26a1363b7ba2b104a0ee299493010cd956abd788079107aa20d6363 libtevent-0.9.18-1.el6_4.i686.rpm 2d84c4ba0d6d76bc3ad292020dcda667d810afc0689a371b694200dee69a1f27 libtevent-devel-0.9.18-1.el6_4.i686.rpm 44a1223290e64bc0dcef6c96958ad473af901f5eedbb545ae20a8a866c657821 python-tevent-0.9.18-1.el6_4.i686.rpm x86_64: f4d9f615c26a1363b7ba2b104a0ee299493010cd956abd788079107aa20d6363 libtevent-0.9.18-1.el6_4.i686.rpm 3848546ed28414ff2e9fb473440e1b20948737f83745292f87877111ac245831 libtevent-0.9.18-1.el6_4.x86_64.rpm 2d84c4ba0d6d76bc3ad292020dcda667d810afc0689a371b694200dee69a1f27 libtevent-devel-0.9.18-1.el6_4.i686.rpm 7c0de531233194d8c866f1774a893c5be42a2d2f992c08d2f13f77ff7c94fdcd libtevent-devel-0.9.18-1.el6_4.x86_64.rpm 9105272400a73927e84f7e86e40c94aa5203769bf3d28dd037814dddeaaa6131 python-tevent-0.9.18-1.el6_4.x86_64.rpm Source: f3d709b60a5606640e77eccde3fd567781294854c054d21d5f0c731238265b9d libtevent-0.9.18-1.el6_4.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Fri, 19 Jul 2013 11:14:56 -0500 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2013:X004 Xen4CentOS libvirt Update To: CentOS-Announce <centos-announce(a)centos.org> Message-ID: <51E96600.4060803(a)centos.org> Content-Type: text/plain; charset="iso-8859-1" CentOS Errata and Bug Fix Advisory 2013:X004 (Xen4CentOS) The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) ----------------------------- X86_64 ----------------------------- libvirt-0.10.2.6-5.el6.centos.alt.x86_64.rpm: 54fa2e57a914a0b661a51600b1130ab34204178d01ad4d946163a5369e179bf3 libvirt-client-0.10.2.6-5.el6.centos.alt.x86_64.rpm: 366fbd754260db260a2ccb54eb21ff8bd7c7bad2cdb2c4cef685b72a6e6dd645 libvirt-daemon-0.10.2.6-5.el6.centos.alt.x86_64.rpm: 7018abdef34d13ef0d2601b8cadf7eb3405bd783e790ebf7ac635982adc327ab libvirt-daemon-config-network-0.10.2.6-5.el6.centos.alt.x86_64.rpm: c46212c02c78f22b480e4f31651996859ececcd47f0d4f5790ad773a6bec3b48 libvirt-daemon-config-nwfilter-0.10.2.6-5.el6.centos.alt.x86_64.rpm: bb970e809cb1e3a4fbe3b2979c838d1d6bed32abae35209a73991165d9ce2f6b libvirt-daemon-driver-interface-0.10.2.6-5.el6.centos.alt.x86_64.rpm: 973c08ec1602918bbd8d9d008572ee61d06eb8e3b3f75fd0ea95e89a20eb49b6 libvirt-daemon-driver-libxl-0.10.2.6-5.el6.centos.alt.x86_64.rpm: a82239df5b63299affc9a485191f012a91ea3a9da1242acdb3cff65aa6cfadfb libvirt-daemon-driver-lxc-0.10.2.6-5.el6.centos.alt.x86_64.rpm: de756b325fee9cccae90847f0d75c8580623ecef551c119c253f4164c6f5cc23 libvirt-daemon-driver-network-0.10.2.6-5.el6.centos.alt.x86_64.rpm: 7d12d999047ff3d7cca8d24e5548959091337b1fbbb9f114d58426700e219d64 libvirt-daemon-driver-nodedev-0.10.2.6-5.el6.centos.alt.x86_64.rpm: c5b2c9d8cc1e54538239068ce10f898c562baa85deed461131cec9aac4197130 libvirt-daemon-driver-nwfilter-0.10.2.6-5.el6.centos.alt.x86_64.rpm: e2fc36a91600508011227d3f188203cd97990ba697745a616bfa6e5b399499aa libvirt-daemon-driver-qemu-0.10.2.6-5.el6.centos.alt.x86_64.rpm: e3b39cca6de8d40c33167b3e6db0e7274867d1071d1f609ca1cb78c9555fd52c libvirt-daemon-driver-secret-0.10.2.6-5.el6.centos.alt.x86_64.rpm: 44d45ebb90a008e643290d85d756ed0dad1bd995b776f26a1cfc8e8d819c4bc6 libvirt-daemon-driver-storage-0.10.2.6-5.el6.centos.alt.x86_64.rpm: d05cd50c33c1374f6f3a92f9cc5cb818b35a715b97031d1935045eaf0bb74ed4 libvirt-daemon-driver-xen-0.10.2.6-5.el6.centos.alt.x86_64.rpm: 809dccd4cc6fbbdddad1ee314de2a6ff15771389d0778ea54e9ece745bbac9a6 libvirt-daemon-kvm-0.10.2.6-5.el6.centos.alt.x86_64.rpm: e34a3244d871169cf4d0c1caace9b1e6547aae9083d1351901eb755a058099ae libvirt-daemon-lxc-0.10.2.6-5.el6.centos.alt.x86_64.rpm: 4349eae4afc8a7f060fe81c80621932aaf4ef03e1d153f9b6c80af9ed02445e6 libvirt-daemon-xen-0.10.2.6-5.el6.centos.alt.x86_64.rpm: f24430d49fb027dcf4410005f5e53025b708a58401e79f99d030b7f920e5fd27 libvirt-devel-0.10.2.6-5.el6.centos.alt.x86_64.rpm: a9e5bfb039e81655a81181e1f132aff334ad168e0373047cc1dd88fadbfdff9e libvirt-docs-0.10.2.6-5.el6.centos.alt.x86_64.rpm: 0c67c0d7caeac599cacbcc165b7824c0875b017dbd07655f75f254350d503965 libvirt-lock-sanlock-0.10.2.6-5.el6.centos.alt.x86_64.rpm: 5606243f498438764bc88d12ed9d563a4f96e4bcf6a34d043a03f296460f8fa9 libvirt-python-0.10.2.6-5.el6.centos.alt.x86_64.rpm: 70116d5c6c497ea0be13a23e0b37a4bc56bd1ac2daab44b2401c1c726edc57d2 ----------------------------- Source: ----------------------------- libvirt-0.10.2.6-5.el6.centos.alt.src.rpm: cc7fb0c0de1f43d33fb3e2cfb78710352fc4dfafe0406e2e007266f0c3fb2392 ================================================================== libvirt Changelog info from the SPEC file: * Fri Jul 19 2013 Johnny Hughes johnny(a)centos.org - 0.10.2.6-1.el6.centos.alt - upgraded to upstream version 0.10.2.6 - removed patches 100, 101, 102, 103, 300, 301, 302, 303 as they are rolled in upstream now - renumbered patches 304 and 305 to 206 and 207. The 200 series of patches are added by CentOS. - added new patches 400, 401, 402 from libvirt upstream (400 series are upstream imported patches) -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos at irc.freenode.net

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LSI MegaRAID experience...
by John Doe 19 Jul '13

19 Jul '13

Hey, anyone using an LSI MegaRAID experienced "disappearing drives"...? We installed 6 new C6 servers, each with a Supermicro SMC2108 (LSI MegaRAID) controllers and 3 PX-128M5Pro SSDs ( RAID1 + hostswap). 2 weeks (and almost no activity on it, since not in production, apart from installation) later, megacli sees (based on the slot numbers): - on one server: only the 2nd disk of the RAID + the ex-hotswap brought online. NO sign of the first disk, no error message, it just "disapeared"... - on another server: apparently lost 1 of the 2 RAID1 disks and then the second disk of the RAID1... Now I can only see the spare brought online, so lonely... Is it "normal" for megacli to "hide" failed disks? Controller's firmware is the latest. SSDs's firmware are not... will try to flash them. BTW, any tips to flash them through the RAID controller instead of having to remove them all and connect them to a SATA controller...? This is a bit scary... Thx, JD

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Discuss July 2013