Discuss March 2011

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286 participants
250 discussions

IP6 Anyone?
by Always Learning 02 Mar '11

02 Mar '11

Today I received an allocation of IP6 addresses for some servers. I can 'play' with the last 2 of the 8 IP6 address segments. I always thought, mistakenly, IP6 was 6 segments, because it was IP6. IP4 had 4 segments. However IP6 is actually IP version 6 and it has 8 segments. The other interesting discovers are: :: means one or more 0 segments, example :: can mean 0:0:0: or just 0:0: or even 0:0:0:0: and, a real smile making favourite, is IP6 breaks Micro$oft's set-up. Micro$oft can not handle actual IP6 addresses because : is forbidden by Micro$oft in its 'Uniform Naming Convention (UNC) path names'. Naturally Micro%oft has invented a 'work around' solution. http://en.wikipedia.org/wiki/IPv6_address#Literal_IPv6_addresses_in_UNC_pat… Because : is sometimes used in an address to indicate the start of a port number, example http://www.anyonejunk.com:1234, the IP6 address can be enclosed within [ ] with the port number remaining outside the square brackets. How will IP6 affect the software in Centos and what gradual changes should one make on the transition to a major Internet change with the ending of NAT for IP4 addresses and a more secure (IPsec) end to end transmission protocol? -- With best regards, Paul. England, EU.

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Re: [CentOS] Looking for a facebook / twitter desktop-like APP for general use
by Les Mikesell 02 Mar '11

02 Mar '11

On 3/2/11 2:24 AM, Rudi Ahlers wrote: > > Our church need(ed) to send info to clients "over the wire" in a > guarenteed fashion. They already have a website, which is > under-utilized / not visited as often by every one. RSS didn't work > out as it should / could since many non-IT-savy-folk don't know what > it it, how it works, or how to use it. Jabber is a no-go for this same > reason. > > The church needs to send weekly news (events, updates, announcements, > etc) to their clients. Email doesn't work well since a lot of it gets > send to spam folder or simply never reach the end users since places > like Yahoo block anything and everything that doesn't originate from > their own network. SMS isn't very effective either. Just pay one of the commercial bulk email/newsletter senders to deliver it. They know how to avoid being marked as spam. > So I was basically looking for something, which works in the same way > as Google Notify (let's use a different example) which logs onto a > server, queries the DB for info and displays it to the user. But, I'm > not a C++ / C# / JS programmer, so I can't write this myself. I hoped > maybe someone knew of something that I could use, maybe a framework or > something to build something like this? Any/all of the examples people of jabber/rss/web server would work on the server side. The piece you are missing is a way to make the user run the appropriate client app. > Someone suggested Adobe Air, but I don't know, or code Adobe Air. > > These guys do something in the lines of what I want: > http://www.zanews.co.za/category/daily-news/ - if you download the > desktop player on the right-side you'll see. > http://www.nuron.co.za/Nuron/index.aspx also has something similar, > but you need to use their proprietory backend to communicate with the > end users and they force banners adds onto each client desktop. > > I need something that isn't bound to, or limit within a certain company. > > Maybe I'm asking too much? Yes, if the end user has to start an app, they could just as easily have an icon on the desktop that is a link to your web page. Or they could put your rss feed url into google reader and see it with their web or mobile aggregater. But they probably won't do that either. Email is probably the best shot at something where they don't have to start something special. Maybe you could give out USB sticks with apps that will hijack their computers... -- Les Mikesell lesmikesell(a)gmail.com

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Looking for a facebook / twitter desktop-like APP for general use
by Rudi Ahlers 02 Mar '11

02 Mar '11

Hi, I'm looking for a way to communicate with end users via a desktop app that works similar to Facebook / Twitter desktop / iPhone / SmartPhone apps, and hope someone can help me with this? Basically I need to convey information (newsletters, news flashes / download links / etc to users, but via a desktop application. think of "[URL=http://toolbar.google.com/gmail-helper/notifier_windows.html[/URL]" or [URL="http://www.mixero.com/"]Mixero[/URL], or even how online game manufacturers communicate with game player via a UI / game interface. BUT, and here's the but, I need something that I can customize a bit to work with our specific setup. The basic idea is to have an admin backup, which can run on PHP + MySQL (we can code this ourself) and then app can get whatever content is in the Database on the client's desktop. Can anyone point me into any direction for something like this? Ideally it should work on Windows, Linux & MAC - so I'm thinking something written in C++ / C# / GTK+ / etc with different OS installers would be ideal. -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

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CentOS MD RAID 1 on Openfiler iSCSI
by Emmanuel Noobadmin 01 Mar '11

01 Mar '11

Has anybody tried or knows if it is possible to create a MD RAID1 device using networked iSCSI devices like those created using OpenFiler? The idea I'm thinking of here is to use two OpenFiler servers with physical drives in RAID 1, to create iSCSI virtual devices and run CentOS guest VMs off the MD RAID 1 device. Since theoretically, this setup would survive both a single physical drive failure as well as a machine failure on the storage side with a much shorter failover time than say using heartbeat. Or is this yet another stupid idea again from me? :D

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python stack size in centos 5.5
by aurfalien＠gmail.com 01 Mar '11

01 Mar '11

Hi all, Centos 5.5 comes with Python 2.4.3. I wish to increase the env size for my Python shells and found this although it pertains to Python 2.5; thread.stack_size([size]) Any one have some pearls for me wether this works in <2.5 or the best way to give my Python shells more memory? I'm scheduled to tackle this tonight and would like to prep myself. Thanks in advance, - aurf

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Canon MX870
by Boris Epstein 01 Mar '11

01 Mar '11

Hello listmates, I am considering getting this multi-functional printer (printer/scanner/fax): http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=… Has anybody used it under Linux? What was that experience like? Thanks. Boris.

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Alternative to cPanel
by Trutwin, Joshua 01 Mar '11

01 Mar '11

Hello all, I'm looking to setup a new CentOS box for a buddy of mine who wants to do hosting on a server via CoLo, Years ago I whipped up a CP of my own on a Debian box he colo'd running a basterdized qmail/tinydns and custom built httpd/mysql/etc (I was young). It worked ok but time to move on and I don't have time to maintain all those packages. I also don't have time to write another CP or port my PoS to it. I'm also just going to use the default packages (bind, postfix, etc) instead of the DJB stuff. Main requirements are fairly straightforward: 1. able to add/manage domains, ssl cert management, manage DNS records 2. able to manage email accounts and anti-spam settings 3. able to add/manage mysql and pgsql (nice to have) 4. user management - ftp/ssh accounts, password change, etc. 5. nice to have: add a wordpress blog / xcart store to a site 6. nice to have: users have own login to do some of the above for their domain only 7. nice to have: integrated website stats (awstats or equiv) 8. not optional - should have a focus on security Stuff like viewing logs, automated billing, hosting plans, managing backups, bandwidth monitoring, uploading web pages, managing server patches, adding new software, etc. I don't mind leaving off or doing myself. Willing to pay a license, but not a huge budget. I was leaning towards webmin/virtualmin but thought I'd check with this list for any suggestions. Had bad experiences with Plesk from a while ago so leaving that off the table. We have experience with cPanel through another fail host, it's ok but too much stuff and too expensive. Josh

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kernel eclipse segfault
by sync 01 Mar '11

01 Mar '11

Hi, all : My user called Tom, and his vnc desktop suddenly did not work just now. Then I went to see the server log message , and found the following message: kernel: Xvnc[2779]: segfault at 00000000008 rip 000000000077af44 rsp 00007fff5ee310c0 error 4 kernel: eclipse[25300]: segfault at 00000000008 rip 000003210cfbc6c rsp 00007fff470c66a0 error 4 gconfd( tom-2764): Gconf server is not in use , shutting down gconfd: Exitting .. By the way, my server os is CentOS 5.3 x86_64 and kernel version is : 2.6.18-128.el5 It looks it is the eclipse tool problem which cause the kernel crash, isn't it ? Could someone can give me some suggestion which can avoid that message happend again? Thanks....

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2 attempts to install newest hplip 3.11.1
by Timothy Kesten 01 Mar '11

01 Mar '11

Hi Folks, the reason: new printer HP LaserJet Pro M1132 MFP This printer needs a non-free plugin. On my 64-bit machine with CentOS 5.5 the installation via hplip-3.11.1.run and hplip-3.11.1.plugin.run works perfectly (except scanning - but that's not the problem at the moment). On my second machine - CentOS 5 32-bit I have many problems and printing doesn't works. 1. Installation using hplip-3.11.1_rhel-5.0.i386.rpm runs. But calling hp-setup or hp-check ends in warning: CUPSEXT could not be loaded. Please check HPLIP installation Calling ./hplip-3.11.1-plugin.run to install the non-free plugin ends with the same message. locate cupsext brings /usr/lib/python2.4/site-packages/cupsext.so 2. Installation via hplip-3.11.1.run ends in error: Configuration failed with error: libcups not found locate libcups /usr/lib/libcups.so /usr/lib/libcups.so.2 /usr/lib/libcupsimage.so /usr/libcupsimage.so.2 I've "goggled" a little bit and read that it could be a python-issue python -v Python 2.4.2 (#1, Nov 11 2010 13:34:43) [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on Linux2 same as on the 64-Bit machine. What goes wrong? Timothy

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Dhcp 3.0.5 on 5.x
by Jason Pyeron 01 Mar '11

01 Mar '11

I am looking to use the update-conflict-detection false; directive in the dhcpd.conf. It is supported in EL6 or and dhcp >=3.1.0a1. Since I am not going to get permission to switch to EL6 or dhcp 3.1 what are my options? Background: I have a DNS/DHCPD system which its conf files are generated automagically. Depending on which network a device is on the ip address will change. It is always required to have an A record for every device. I see my only 2 possible options to be: 1, trick dhcpd into thinking that the records in dns are its, hence updatable. 2, backport the update-conflict-detection false logic into dhcp-3.0.5-23.el5_5.2 Any suggestions? TIA -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Principal Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - - - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This message is copyright PD Inc, subject to license 20080407P00.

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Discuss March 2011