Discuss January 2012

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222 participants
221 discussions

Java+Tomcat on CentOS 6.x
by John R Pierce 19 Jan '12

19 Jan '12

So whats good practice for installing Java/JDK and Tomcat for EL6 these days? The base repository included Tomcat6.6 is built with GCJ which I'd rather avoid. I'm fine with using OpenJDK ... Do most folks just use the Apache tarball for Tomcat and install it in a user directory or /opt/something ? -- john r pierce N 37, W 122 santa cruz ca mid-left coast

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Connecting ethX devices directly to a KVM/QEMU guest OS (no bridging)
by Chuck Munro 18 Jan '12

18 Jan '12

Hello CentOS gurus, and a belated Happy New Year (or an early Happy Chinese New Year). I'm in the process of building a CentOS-6 KVM host machine whose only function will be to run four independent 'm0n0wall' firewall guest instances. I have a couple of quad-port Intel NICs to provide four WAN-side and four LAN-side ports, which will not be shared with any other guests. Remote access to the host CentOS is via a separate on-board NIC, so the Intel ports are free to assign. I've Googled until I'm blue in the face, but haven't found a clear explanation of how I can assign each ethX device directly to the guest OS rather than going thru the usual bridge configuration. I need to allow the m0n0wall OS to assign the LAN and WAN IP addresses, if that's possible without using a bridge. Using the Virtual Machine Manager GUI to create the VM guests (which boot up and run nicely), the drop-down list shows all of the ethX devices greyed out. Do I need to somehow start the NICs without assigning IP addresses, so that they show up in 'ifconfig'? Can anyone provide a clear, easy-to-understand procedure for doing this? If necessary, I don't mind using the command-line to create the VMs but the docs aren’t totally clear (to me, at least) regarding NIC assignment. Thanking you in advance for your suggestions, Chuck

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Mediatomb under CentOS-6
by Timothy Murphy 18 Jan '12

18 Jan '12

Is anyone running mediatomb under CentOS-6? I've installed it from rpmforge.repo (I think it used to be in the epel repository under CentOS-5) but I don't know how to configure it. I'm trying to use it to see photos on my Samsung Smart TV (model D5520). The photos (or some of them) come up on the TV, but when I click on them I always get the error message "Not Supported File Format". Are there reasonably simple instructions anywhere for using mediatomb under CentOS? -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College Dublin

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skype on 5.7
by ken 18 Jan '12

18 Jan '12

Earlier last year I had a 5.7 system running with skype. It worked fine. Later last year I had to reinstall my entire system. I didn't install skype then. Yesterday I tried to find a version of skype to use on 5.7, but couldn't find one on skype.com; there's no version for RH/CentOS 5.7. Does anyone know where a working skype can be found? Thanks.

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CentOS-announce Digest, Vol 83, Issue 7
by centos-announce-request＠centos.org 18 Jan '12

18 Jan '12

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-2012:0026 CentOS 5 busybox Update (Johnny Hughes) 2. CEBA-2012:0013 CentOS 6 libvirt Update (Johnny Hughes) 3. CEBA-2012:0028 CentOS 6 strace Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Tue, 17 Jan 2012 18:01:52 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:0026 CentOS 5 busybox Update To: centos-announce(a)centos.org Message-ID: <20120117180152.GA17283(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:0026 Upstream details at : https://rhn.redhat.com/errata/RHBA-2012-0026.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: dca4151ada0126d7a2995cd930f674ff58303c19a70d6644c1f07eaee3e16a08 busybox-1.2.0-10.el5.centos.1.i386.rpm 0f8cc25680afc6c9af4dc50dd72b51a0619d25e398c8b93c6d03a6fadc481a9d busybox-anaconda-1.2.0-10.el5.centos.1.i386.rpm x86_64: ef568123e891ea047e857291b54fa52c9caeee7b38d4baad41c2f3eb66a8a3e6 busybox-1.2.0-10.el5.centos.1.x86_64.rpm c2c6411c9b17a46fbfc74041f00799ce06f203023986c3ac2e35ad5057d2caa6 busybox-anaconda-1.2.0-10.el5.centos.1.x86_64.rpm Source: 042a1c7de86223e6bcb4eec7053e415e3f7b662fad01c8eb1e5cbf9456c9db10 busybox-1.2.0-10.el5.centos.1.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Tue, 17 Jan 2012 18:17:38 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:0013 CentOS 6 libvirt Update To: centos-announce(a)centos.org Message-ID: <20120117181738.GA17504(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:0013 Upstream details at : https://rhn.redhat.com/errata/RHBA-2012-0013.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: b54b2e5e3f8e70473e334ad6632818e4629248287252143ef3cfd425ae4b179d libvirt-0.9.4-23.el6_2.4.i686.rpm 23cd3c1c33d5fd0003699d56fcbc141fa4f983a91939ee777a8225fd6dbb15a9 libvirt-client-0.9.4-23.el6_2.4.i686.rpm 49fa3c7f464174380cc512911108bd7eeba25802f96457ce4805e9bd08f5c452 libvirt-devel-0.9.4-23.el6_2.4.i686.rpm 2d0975f1cf829d6b7e0f99d205d4ba1e459c258e276e2c5a6cd1cd2ae70b9973 libvirt-lock-sanlock-0.9.4-23.el6_2.4.i686.rpm f358a6f2778d31f63a2f3e160a5367c562094e13e5647c43c39289372e83b9a2 libvirt-python-0.9.4-23.el6_2.4.i686.rpm x86_64: 0324a13c6340b4e46854a0e0260365d1e201b2115d35b06fb996e12d32307c35 libvirt-0.9.4-23.el6_2.4.x86_64.rpm 23cd3c1c33d5fd0003699d56fcbc141fa4f983a91939ee777a8225fd6dbb15a9 libvirt-client-0.9.4-23.el6_2.4.i686.rpm 2171b97ccf1d4ae77c1e7fe05d199b14550e4f3f2f377ebf0ab14b0db7805375 libvirt-client-0.9.4-23.el6_2.4.x86_64.rpm 49fa3c7f464174380cc512911108bd7eeba25802f96457ce4805e9bd08f5c452 libvirt-devel-0.9.4-23.el6_2.4.i686.rpm 9696a7fc7defceaefebb0e18811b82346bdbfdfe13c2702dd16796ed9a8dee62 libvirt-devel-0.9.4-23.el6_2.4.x86_64.rpm e91e200fd5740f71942c819e135ab5f49e8b1ba4bd14919e85c0b8649059cd46 libvirt-lock-sanlock-0.9.4-23.el6_2.4.x86_64.rpm abcd98eef77921b8116d33425104c709c9a52bdb61697882fe66188308f27a07 libvirt-python-0.9.4-23.el6_2.4.x86_64.rpm Source: aadd794bcadd21a7b13b1f46cdb1cbbf2e1574b5edd0e12828dbf7c320b98801 libvirt-0.9.4-23.el6_2.4.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Wed, 18 Jan 2012 16:21:05 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:0028 CentOS 6 strace Update To: centos-announce(a)centos.org Message-ID: <20120118162105.GA16719(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:0028 Upstream details at : https://rhn.redhat.com/errata/RHBA-2012-0028.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 1dca76b14ad4f23255c3f2d643b2f58fd6d9252dc7246f258c835ab2d54ec662 strace-4.5.19-1.11.el6_2.1.i686.rpm x86_64: 65d34cfe25041256db5f134f9b73ff61df19f4b40628e15558bbef0eb4e84796 strace-4.5.19-1.11.el6_2.1.x86_64.rpm Source: 4b8b07a0fa2eab31fd6038aaea06faf2d6db49395f61ec2c3898f25f951d7748 strace-4.5.19-1.11.el6_2.1.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #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 83, Issue 7 **********************************************

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Re: [CentOS] anyone doing automatic yum updates via yum-updatesd on production servers?
by Karanbir Singh 18 Jan '12

18 Jan '12

On 01/18/2012 08:05 AM, Sorin Srbu wrote: >> I would like to expand on this a little. Once you get a certain >> number of machine it probably makes sense to have your own internal >> mirror. > > Is there any particular approximate number of machines you'd say this would > apply to? based on personal experience, I'd say that number was at the '9' mark. Once you go double digit, and you have those many machines in one location, a local repo is the way to go. Perhaps then with one of them ( either a machine or a VM instance ) doing auto nightly updates, and running a test to make sure all is still well and sending out a small email to the admin with a OK or 'Trouble found in updates' -- Karanbir Singh +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh ICQ: 2522219 | Yahoo IM: z00dax | Gtalk: z00dax GnuPG Key : http://www.karan.org/publickey.asc

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Theoretical Firewall Specs?
by Jason T. Slack-Moehrle 18 Jan '12

18 Jan '12

So, the more I look at various ways to lay out my infrastructure, the more I am thinking about specs for hardware. Starting with firewalling. How does one determine the specs for a firewall? What I mean is: 1. motherboard/CPU - p4? Dual-Core? Intel i3, i5, i7? 2. RAM? 4gb? 8gb? More? 32gb? 3. Obviously GB Nics! I am bring about 300gb of traffic a month right now and I expect that to increase significantly with my next offerings. Obviously one answer is to but a beefy motherboard that supports lots of RAM and add more as needed, but where does one start out? How do I know if my firewall would need more RAM? How do I know if the CPU is good enough? I still go back to my Cisco PIX days where these devices were amazing on just 256MB of RAM. We piloted a large chunk of Cornell University's Lab Of Ornithology on 2 of these, but now-a-days it seems that a PIX would not be good enough. Is it because the nature of the internet and data and attacks has changed over time? more aggressive? -Jason

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Re: [CentOS] anyone doing automatic yum updates via yum-updatesd on production servers?
by Karanbir Singh 18 Jan '12

18 Jan '12

On 01/18/2012 11:45 AM, Sorin Srbu wrote: >> ideally a large number of machines, and a reasonable local connection >> with the ability to schedule and manage updates being applied on the >> machines ( so, rules out hosting setups ) > > I might be interested, it depends a bit on how complex it is to set up. 8-) > > We have around fifteen machines (including my CentOS test machine) on a 100 Mbps LAN, currently running a mix of 64b CentOS 5.7 and 6.2. > > Would there be any automatic reboots involved? If yes, I'll have to pass on this. I will post a new thread with details, its not nearly as involved as that and far simpler more practical than spacewalk. -- Karanbir Singh +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh ICQ: 2522219 | Yahoo IM: z00dax | Gtalk: z00dax GnuPG Key : http://www.karan.org/publickey.asc

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Re: [CentOS] anyone doing automatic yum updates via yum-updatesd on production servers?
by Karanbir Singh 18 Jan '12

18 Jan '12

On 01/18/2012 10:54 AM, Sorin Srbu wrote: > We've expanded our local calculation farm to now include mid-teen numbers, and > manual updates is becoming a PITA... > I'm looking for a site / person to help testing a mirror proxy setup, interested ? -- Karanbir Singh +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh ICQ: 2522219 | Yahoo IM: z00dax | Gtalk: z00dax GnuPG Key : http://www.karan.org/publickey.asc

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anyone doing automatic yum updates via yum-updatesd on production servers?
by P J 18 Jan '12

18 Jan '12

I've read that it's not recommended to automatically apply updates via yum-updated on production servers, but I keep encountering servers that have this enabled. Are any of you doing automatic yum updates on production servers in CentOS 5 via yum-updatesd? Have you experienced any negative side effects? The only thing I can think of is if say a client had a custom version of PHP installed that was not properly excluded in yum and then it was over written. Unless I'm missing something else that could go horribly wrong. Any feedback is appreciated. (if this question has already been asked my apologies, searching the archive didn't find what I was looking for) Thanks, -PJ

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Discuss January 2012