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GNU Telephony Centos repository
by Robert Moskowitz 20 Mar '07

20 Mar '07

The Gnu Telephony site: http://wiki.gnutelephony.org Has a Centos repo: http://dist.gnutelephony.org/RPMS/ But I caught some text stating that this is for Centos 4.2. Is it really? Is there a difference; i.e. would it be safe to install these on Centos 4.4? Really I am after Twinkle, and it seems there is a lot you need to actually get Twinkle installed...

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HP DL585 G2 -- no nics
by David Mackintosh 20 Mar '07

20 Mar '07

Hi folks, I've just spent about six hours messing around with an HP DL585 G2 server trying to get CentOS to go. This box is a dual-CPU with dual cores and 10GB of RAM total. According to the datasheet, the POST screens, and the BIOS, it has the Broadcom embedded NICs in it. The problem boils down to the installed OS (4.4 x86_64) not seeing the NICs. If you do an lspci on the system after installing from local media the only unknown device is one of the built-in hardware health monitors. And since the NICs don't show up in the pci table, there's nothing for the drivers I downloaded from the HP website to hook to. What's interesting is that in the process of trying to get this thing going I've installed two old (2002 vintage) 3Com 905cxl PCI cards in the system -- again, the BIOS (or whatever the built in hardware diagnostics program is called) sees them, but the running OS does not. This implies I've done or missed something trivially stupid, and after banging my head against this box and the monumentally unhelpful HP "documentation" I was wondering if someone had been down this road before. Any insights would be appreciated. Thanks! -- /\oo/\ / /()\ \ David Mackintosh | dave(a)xdroop.com | http://www.xdroop.com

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RE: [CentOS] net.ipv4 TCP/IP Optimizations = sysctl.conf?
by Plant, Dean 20 Mar '07

20 Mar '07

Karl R. Balsmeier wrote: > Stephen John Smoogen wrote: > >> On 3/19/07, Karl R. Balsmeier <karl(a)klxsystems.net> wrote: >> >>> If I execute these via command line, will they persist after a >>> reboot? >>> >>> Or, should I be putting these into a file like /etc/sysctl.conf? >>> >> >> They will only persist if they are put in /etc/sysctl.conf. Whether >> they do what you want.. is another question. >> >> > oh, they do what I want, they make things much much faster from a > performance standpoint... > I spent some time trying to tune the IP stack on one of our backup servers without much improvement. Would you be willing to share your test results/thoughts on the settings you posted? Thanks Dean.

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RE: Need help in securing maildir so that root user
by Jun Salen 20 Mar '07

20 Mar '07

How much cost do you currently spending in your Exchange setup, can you give me an idea so that I know how much I am saved using my current setup. Postfix, Courier, ClamAV, SpamAssasin, Roundcube and MailScanner. All this under the roof of CentOS. Thanks. ---------------------------- My company is currently using Exchange Servers for Mail Server solutions but now they want to move to Linux Servers due to heavy cost involved with the Exchange Users.We will be using the latest version of Centos. So the kind of solution we are looking is below: junji linux registered user #253162 Send instant messages to your online friends http://uk.messenger.yahoo.com

1 0

dual core optimization
by Mark Quitoriano 20 Mar '07

20 Mar '07

Hi, is this done by centos automatically? or do i need to config something?

3 5

net.ipv4 TCP/IP Optimizations = sysctl.conf?
by Karl R. Balsmeier 19 Mar '07

19 Mar '07

If I execute these via command line, will they persist after a reboot? Or, should I be putting these into a file like /etc/sysctl.conf? --------------snip-------------- /sbin/sysctl -w net.ipv4.tcp_max_syn_backlog=2048 /sbin/sysctl -w net.ipv4.tcp_fin_timeout=30 /sbin/sysctl -w net.ipv4.tcp_keepalive_intvl=10 /sbin/sysctl -w net.ipv4.tcp_keepalive_probes=7 /sbin/sysctl -w net.ipv4.tcp_keepalive_time=1800 /sbin/sysctl -w net.ipv4.tcp_max_tw_buckets=360000 /sbin/sysctl -w net.ipv4.tcp_synack_retries=3 /sbin/sysctl -w net.ipv4.tcp_rmem="4096 87380 16777216" /sbin/sysctl -w net.ipv4.tcp_wmem="4096 87380 16777216" /sbin/sysctl -w net.ipv4.tcp_mem="8388608 8388608 8388608" --------------snip--------------- p.s. these are meant for a specific technology we use, so not sure if everyone reading would be best served by using them, mileage may vary! : / -karlski

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sysctl errors
by Karl R. Balsmeier 19 Mar '07

19 Mar '07

I get these errors from the following settings in /etc/sysctl.conf file: # Custom Settings: net.ipv4.tcp_max_syn_backlog=2048 net.ipv4.tcp_fin_timeout=30 net.ipv4.tcp_keepalive_intvl=10 net.ipv4.tcp_keepalive_probes=7 net.ipv4.tcp_keepalive_time=1800 net.ipv4.tcp_max_tw_buckets=360000 net.ipv4.tcp_synack_retries=3 net.ipv4.tcp_rmem="4096 87380 16777216" net.ipv4.tcp_wmem="4096 87380 16777216" net.ipv4.tcp_mem="8388608 8388608 8388608" ---------errors----------- # sysctl -p [errors] error: unknown error 22 setting key 'net.ipv4.tcp_rmem' error: unknown error 22 setting key 'net.ipv4.tcp_wmem' error: unknown error 22 setting key 'net.ipv4.tcp_mem' any advice?

2 1

system-display-config doesn't run right
by Mark Hull-Richter 19 Mar '07

19 Mar '07

This might be a gnome problem, but.... I've noticed that, on occasion (frequently), when I try to look at or modify my display configuration, the Applications->System Settings->Display doesn't come up. It asks for the root password, which I give it, and then nothing. I ran system-config-display form the command line, but it dies thus: [root@mhullrichter mhr]# system-config-display * no cardMem, assuming 8192 * no cardMem, assuming 8192 Trying with card: VESA driver (generic) * no cardMem, assuming 8192 Traceback (most recent call last): File "/usr/share/system-config-display/xconf.py", line 380, in ? dialog = xConfigDialog.XConfigDialog(hardware_state, xconfig, rhpl.videocard.VideoCardInfo()) File "/usr/share/system-config-display/xConfigDialog.py", line 566, in __init__ self.xml.get_widget("secondMonitorLabel").set_text(monitor_list[1].model name) TypeError: GtkLabel.set_text() argument 1 must be string, not None I seem to be missing an argument from the call, but I'm not sure what goes there, and even so, when I run it from the menu, shouldn't it have the right data and run? Thanks. Mark Hull-Richter Linux Kernel Engineer (949) 680-3082 - Office (949) 680-3001 - Fax (949) 632-8403 - Mobile mhull-richter(a)datallegro.com <mailto:mhull-richter@datallegro.com> www.datallegro.com <http://www.datallegro.com> 85 Enterprise, 2nd Floor, Aliso Viejo, CA 92656

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installing perl module in centos/rpmforge vs. cpan methods
by Karl R. Balsmeier 19 Mar '07

19 Mar '07

Hi, I just used RPMforge package perl-Mail-Sender, and am looking at the perl cpan site for info, anyone got a simple way to determine if the module is working properly? I am trying to use the cpan info, but it's a bit cryptic (as perl is wont to be). -it says to use this: #!/usr/local/bin/perl use ExtUtils::Installed; my $instmod = ExtUtils::Installed->new(); foreach my $module ($instmod->modules()) { my $version = $instmod->version($module) || "???"; print "$module -- $version\n"; } but all I get is: Perl -- 5.8.5 which seems to indicate doing a wget http://dag.wieers.com/rpm/packages/perl-Mail-Sender/perl-Mail-Sender-0.8.13… rpm -ivh perl-Mail-Sender-0.8.13-1.el4.rf.noarch.rpm is either working and thie script above just cant see it, or the module is installed and requires some follow up. Both of these are just theoretical. Any input from the wise listers other than "read all of cpan since you have a million hours free time". perl -MCPAN -e 'install Mail::Sender' simply hangs on the FTP transaction, thus the reason I did this from RPMforge instead. -krb

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Changing from NTFS to ext3
by Mark Hull-Richter 19 Mar '07

19 Mar '07

I want to convert all my NTFS partitions to ext3 since I'm no longer running Windows, at least on my main machine at home. I'm planning to tar the NTFS partitions to an existing ext3, reformat the partition as ext3 and untar it back. What is the best way to accomplish step two of this - reformatting the partition? I've only done this so far during the installation phase, and that was for partitions I knew I could destroy with impunity. I'm guessing I unmount the drive, <do something magic here> and remount it. It's the magic part I don't know. Thanks. Mark Hull-Richter Linux Kernel Engineer (949) 680-3082 - Office (949) 680-3001 - Fax (949) 632-8403 - Mobile mhull-richter(a)datallegro.com <mailto:mhull-richter@datallegro.com> www.datallegro.com <http://www.datallegro.com> 85 Enterprise, Second Floor, Aliso Viejo, CA 92656

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