Discuss November 2005

discuss@lists.centos.org

232 participants
368 discussions

Video Recording
by Lee W 02 Dec '05

02 Dec '05

Hi, I would like to record some training/advertising videos, in a similar format to those offered by CBT Nuggets (and others). Essentially this means I need to be able grab real video (e.g. webcam or DV camcorder, etc) as well as what is on the computer screen (VNC Recorder maybe) and audio. In terms of output I would like it to be in Ogg Theora format as these seems to be supported both on Linux & Windows (though media player plugins), it is also an open standard which beats all the other available formats. Does anyone have any suggestions for such a program, even if it is suite of different programs. My google/freshmeat search results have so far been not very useful. Thanks in advance Lee

3 3

RE: [CentOS] why was LILO removed from centOS 4.2?
by Nielsen, Steve 02 Dec '05

02 Dec '05

lilo is still there. Its just not available as a choice in the install. We build all of our servers using kickstart (automated version of the install) and there lilo can be specified as a boot loader. Steve -----Original Message----- From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf Of Ulrik S. Kofod Sent: Wednesday, November 30, 2005 9:06 AM To: centos(a)centos.org Subject: [CentOS] why was LILO removed from centOS 4.2? I can't choose LILO as boot loader anymore in the install process? And what is the advantages in GRUP vs. LILO that are so great that LILO has been deleted all together? One big disadvantages when forced to use GRUB is that it is a hassle to make the disks in a RAID1 bootable. https://www.redhat.com/archives/fedora-list/2005-March/msg05935.html and RAID1 seems pretty useless when it is the only bootable disk that fails. can someone come up with a nice one-liner that will make GRUB "global" like LILO is out-of-the-box ? or is ther a parameter you can give? I don't know about you but when one of my disks fails I really don't need too many new check marks to worry about on my to do list. best regards Ulrik _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

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Default CentOS(Redhat) iptables, Secure?
by Mark Sargent 01 Dec '05

01 Dec '05

Hi All, whilst not being an expert on iptables, the below ouput of iptables -L seems too insecure to me. Does anyone agree.? Perhaps I'm not understanding it as well as I think I am.? Please give your thoughts on this. Cheers. Mark Sargent. [root@localhost racket]# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination RH-Firewall-1-INPUT all -- anywhere anywhere Chain FORWARD (policy ACCEPT) target prot opt source destination RH-Firewall-1-INPUT all -- anywhere anywhere Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain RH-Firewall-1-INPUT (2 references) target prot opt source destination ACCEPT all -- anywhere anywhere ACCEPT icmp -- anywhere anywhere icmp any ACCEPT ipv6-crypt-- anywhere anywhere ACCEPT ipv6-auth-- anywhere anywhere ACCEPT udp -- anywhere 224.0.0.251 udp dpt:5353 ACCEPT udp -- anywhere anywhere udp dpt:ipp ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED REJECT all -- anywhere anywhere reject-with icmp-host-prohibited You have new mail in /var/spool/mail/root

4 7

wait() fails
by Michael Ubell 01 Dec '05

01 Dec '05

I have a program that forks a child, sleeps for a while and then kills the child and waits for it. On CentOs (4) the wait sometimes fails with a "No child" error. I have not seen this on any other system. This program has been running for years on Solaris, older Redhat distributions, etc. I would say the failure rate is about 1 in 10. I put a breakpoint on the error and forced the code to wait again. It works the second time. Is this a known bug? Mike

2 2

why was LILO removed from centOS 4.2?
by Ulrik S. Kofod 01 Dec '05

01 Dec '05

I can't choose LILO as boot loader anymore in the install process? And what is the advantages in GRUP vs. LILO that are so great that LILO has been deleted all together? One big disadvantages when forced to use GRUB is that it is a hassle to make the disks in a RAID1 bootable. https://www.redhat.com/archives/fedora-list/2005-March/msg05935.html and RAID1 seems pretty useless when it is the only bootable disk that fails. can someone come up with a nice one-liner that will make GRUB "global" like LILO is out-of-the-box ? or is ther a parameter you can give? I don't know about you but when one of my disks fails I really don't need too many new check marks to worry about on my to do list. best regards Ulrik

8 14

clicking backspace in centos3 makes ^?
by Robin Mordasiewicz 01 Dec '05

01 Dec '05

While in centos3, using vim and clicking the backspace I see the ^? character instead of it actually deleteing the previous character. In centos4 this was not a problem. I have rad about remapping keys and such, but can someone tell me what the difference between centos4 and centos3 is so I can make the change to make it work on centos3.

8 11

CentOS 4 and Intel Wireless 2200BG (ipw2200)
by Barry Brimer 01 Dec '05

01 Dec '05

I am going to be setting up an Intel 2200bg card this evening. I was wondering if anyone is using this (successfully) with CentOS 4. The directions look straightforward, but please let me know if you had to do anything interesting/undocumented to make it work. I am also wondering if people are using the driver provided with the current CentOS 4 kernel or if people are using the most recent version, and if so are you using the one from ipw2200.sourceforge.net or from intel.com Thanks, Barry

4 3

Too much memory cache being used while moving large file
by Sean O Sullivan 01 Dec '05

01 Dec '05

System : CentOS 4.2 2.6.9-22.0.1.ELsmp System fully up-to-date. 3GB RAM 3ware 9000S card, with Raid5 array. I think that's about all relevant info ... Had file on disk (not array), attempted to mv file to array. Went fine till 2.4GB was copied, then it slowed down to a meg every few minutes. Free memory was ~50MB (Typically is 1.5-2GB), and cache was 2.5GB. Stopped the move, however cache not being cleared out -- and this issue continues to happen - unsure if it was always a problem/known issue, it does however only occur when copying a single file > 2.4GB (I have copied 5+GB of 1+GB files in the past without issue). Also, saw following in dmesg while this was going on: Out of Memory: Killed process 12467 (mysqld). I'll be restarting server later on tonight, which will 'fix' immediate problem, however just curious on thoughts in regards to this. Regards, Sean O Sullivan

4 7

Installed Kernal (default)
by Sam Drinkard 01 Dec '05

01 Dec '05

Is there a description or statement that describes the stock kernal in CentOS, and would give all the various modules it is compiled with? As with BSD, I assume there are things in the kernal that are mandatory, and then there are things that are optional or included so as to catch most everything one could have w/r/t hardware. That being the case, as with FreeBSD, removing those unneded modules would work to reduce the size of the kernal. Aside from rebuilding the kernal to have it contain certain objects needed for something to work, and the loading of different modules at runtime, are there any other benefits to building a custom kernal for any particular set of hardware? By leaving the modules not needed, how much, if any, overhead does this contribute to size? Is this sort of the way things work under Linux, or am I all wet in my thinking? -- Snowman

5 7

A minor beef
by Collins Richey 01 Dec '05

01 Dec '05

CentOS is a really great product, and the package supporters do a bang up job, but the one deficiency I've found is the fact that one can never rely on being able to get updates at any particular time. Whether it's CentOS proper or the Dag additions, something is broke most every time I want to apply updates. I know this is whin[ge]ing, and I certainly don't have a solution to offer. If anyone can offer bucks and/or equipment to improved the software distribution process, your karma would get an enormous boost!!! -- Collins Richey Debugging is twice as hard as writing the code ... If you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. -Brian Kernighan

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Discuss November 2005