- Discuss - lists.centos.org

Bonding and network cards
by David Hrbáč 04 Dec '08

04 Dec '08

Hi, I have been playing this weekend with bonding on PCI netcards and found that all of netcards I have, but old 3com, do not support MII. So bonding is not going to happen with them. Do you have some pci netcards supporting MII successfully running on bonging? Thanks, David Hrbáč

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does anyone have experience with clusters?
by Rudi Ahlers 04 Dec '08

04 Dec '08

Hi all, I want to start experimenting with clusters, and I would like to use normal desktop grade hardware for this. I have some extra PC components lying around, enough to build 3 - 4 moderate desktops with a PIV / C2D CPU & 512MB - 1GB RAM each. All the machines should have at least a 100MB NIC, but I can add a gigabit NIC to the machines that doesn't have it if need be. I have used Linux Heartbeat to failover a MySQL cluster before, and it's actually been running very well for about 3 years now. But, I want to start looking @ total clustering, with DRBD - where everything (not just MySQL) is being replicated across the 4 machines. I'm also intereated in load balancing. Has anyone done anything like this? The cluster will be running / hosting a few XEN Virtual Machines, and idealy if one PC / server dies (hardware failure / power failure / etc), then on of the other machines should still be running the virtual machines, i.e. no downtime. Is this possible? Can somone steer me into a direction where I can get more info on this? My aim: to use common, cheap PC equipment & CentOS for the project, I don't want to spend any more money, and want to use what I have. -- Kind Regards Rudi Ahlers

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Sound problem in Dell inspiron 1525
by Ern jura 03 Dec '08

03 Dec '08

After installing CentOS 5.2 on my Dell inspiron 1525 laptop, the sound was inactive, I then installed Alsa-Driver, Alsa-utils, Alsa-plugins and Alsa-libs the ATrpms site. The speakers then work fine, but when I plug in headphones, the sound begins to fade out and eventually becomes completely quiet. I have checked the Volume Manager and nothing is muted including the Headphones volume, when I unplug the headphones the speakers are also quiet. The sound card is a HDA-INTEL. Any suggestions and solutions? NOTE: THE SPEAKERS WORK FINE, THE PROBLEM ONLY OCCURS THE MOMENT I PLUG IN HEADPHONES. HOW CAN I USE HEADPHONES?

2 1

User access to /dev/ttyUSB0
by Frank Cox 03 Dec '08

03 Dec '08

I have been trying to get an EVDO modem to work with Centos 5. I can make it dial out with wvdial only when I'm the root user. Otherwise I get this error: Cannot open /dev/ttyUSB0: Device or resource busy I added the user to the uucp group. crw-rw---- 1 root uucp 188, 0 Dec 3 02:30 /dev/ttyUSB0 crw-rw---- 1 root uucp 188, 1 Dec 3 02:30 /dev/ttyUSB1 crw-rw---- 1 root uucp 188, 2 Dec 3 02:30 /dev/ttyUSB2 crw-rw---- 1 root uucp 188, 3 Dec 3 02:30 /dev/ttyUSB3 What have I missed? -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com DRY CLEANER BUSINESS FOR SALE ~ http://www.canadadrycleanerforsale.com

2 2

Yum upgrade inside firewall
by mcclnx mcc 03 Dec '08

03 Dec '08

We have several CENTOS 4.X which inside Firewall. I can NOT run "yum" inside firewall to upgrade O.S. to new release. Does there has way I can download all RPM to otherside firewall server then transfer those files into servers inside firewall and upgrade. Anyone have procedure dicuments or website can be reference? Thanks. ______________________________________________________________________________________________________ 付費才容量無上限？Yahoo!奇摩電子信箱2.0免費給你，信件永遠不必刪！ http://tw.mg0.mail.yahoo.com/dc/landing

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system-config-network crash
by Frank Cox 03 Dec '08

03 Dec '08

I have been trying to get a EVDO modem to work with Centos 5 and earlier this evening I used system-config-network to add it to the system. Now when I try to run system-config-network again it crashes with the following error. Can anyone tell me how I can fix this? Component: system-config-network Version: 1.3.99.10 Summary: TBa9c752cb ConfPAP.py:85:initvars:IndexError: list index out of range Traceback (most recent call last): File "/usr/sbin/system-config-network-gui", line 167, in main window = mainDialog() File "/usr/share/system-config-network/netconfpkg/gui/maindialog.py", line 247, in __init__ self.load() File "/usr/share/system-config-network/netconfpkg/gui/maindialog.py", line 270, in load self.loadDevices() File "/usr/share/system-config-network/netconfpkg/gui/maindialog.py", line 278, in loadDevices devicelist = getDeviceList() File "/usr/share/system-config-network/netconfpkg/NCDeviceList.py", line 301, in getDeviceList __DVList.load() File "/usr/share/system-config-network/netconfpkg/NCDeviceList.py", line 84, in load newdev.load(dev) File "/usr/share/system-config-network/netconfpkg/plugins/NCDevModem.py", line 36, in load self.Dialup.load(conf) File "/usr/share/system-config-network/netconfpkg/NCDialup.py", line 513, in load Dialup.load(self, parentConf) File "/usr/share/system-config-network/netconfpkg/NCDialup.py", line 128, in load papconf = getPAPConf() File "/usr/share/system-config-network/netconfpkg/NC_functions.py", line 288, in getPAPConf DVpapconf = ConfPAP.ConfPAP(netconfpkg.ROOT + PAPFILE) File "/usr/lib/python2.4/site-packages/rhpl/ConfPAP.py", line 32, in __init__ Conf.Conf.__init__(self, filename, '#', ' \t', ' \t') File "/usr/lib/python2.4/site-packages/rhpl/Conf.py", line 180, in __init__ self.read() File "/usr/lib/python2.4/site-packages/rhpl/ConfPAP.py", line 37, in read self.initvars() File "/usr/lib/python2.4/site-packages/rhpl/ConfPAP.py", line 85, in initvars self.vars[var[0]][var[1]] = var[2] IndexError: list index out of range Local variables in innermost frame: var: [''] self: <rhpl.ConfPAP.ConfPAP instance at 0xb7a3360c> -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com DRY CLEANER BUSINESS FOR SALE ~ http://www.canadadrycleanerforsale.com

1 1

how to rescan serial ports without reboot
by Rudi Ahlers 03 Dec '08

03 Dec '08

Hi all, I hope this is possible. I have a server, with a network switch attached to the serial port, and I want to rescan the serial port (/dev/tty) to see if it picks it up? I'd prefer not to reboot the server if at all possible. dmesg reports ttyS0 as the active port: [root@zabackup01 ~]# dmesg |grep tty Bootdata ok (command line is ro root=/dev/System/root rhgb quiet xencons=tty6) Kernel command line: ro root=/dev/System/root rhgb quiet xencons=tty6 WARNING: Failed to register Xen virtual console driver as 'tty1' serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A 00:06: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A ttyS0: 1 input overrun(s) ttyS0: 1 input overrun(s) running screen /dev/ttyS0 doesn't show up anything, and I should at least get the switch's login prompt. -- Kind Regards Rudi Ahlers

2 1

Strange UserID Issue
by Mohan 03 Dec '08

03 Dec '08

Hi Guys, I have a setup where i have a user named root4 whose uid and gid are set to 0 so that it behaves as root user. The root user has ssh keys configured to access other servers . In the existing setup all other servers with similar setup shows whoami as root ,though i login with the username root4. In one of the servers all of a sudden it shows as root4 instead of root. The only change i did a day ago was installed fluxbox and k3b for burning dvd-backups in the server itself. Since it shows whoami as root4. ssh checks /home/root4/.ssh for ssh keys instead of checking in /root/.ssh/ so i have to copy all the keys manually from default location to /home/root4/.ssh to get the ssh key based authentication working . This machine runs centos 4.5 Id still shows uid =0 (root4) gid=0(root) groups=0(root) but its supposed to show uid =0 (root) gid=0(root) groups=0(root) Earlier all files in /home/root4 are owned by user and group root.root now it shows root4. root. i checked the passwd file last modification date and it hasnt been changed for months. root4:x:0:0::/home/root4/:/bin/bash selinux is disabled $HOME=/home/root4 -- which is normal. I dont know why it behaves all of a sudden. does anyone have experienced similar problem ? Where should i look for to fix this issue ? Any help would be much appreciated. -- Regards, Mohan.

2 1

mysql question
by ann kok 03 Dec '08

03 Dec '08

Hi All Can I know what is the meaning of the position? Why there is nothing in the "Binlog_Ignore_DB" mysql> show master status; +-------------------+----------+---------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +-------------------+----------+---------------+------------------+ | mysqld-bin.000006 | 183219 | dbname,dbname | | +-------------------+----------+---------------+------------------+ Thank you __________________________________________________________________ Instant Messaging, free SMS, sharing photos and more... Try the new Yahoo! Canada Messenger at http://ca.beta.messenger.yahoo.com/

1 0

Xen-Version in CentOS 5.3?
by Dirk H. Schulz 03 Dec '08

03 Dec '08

Hi folks, I tried to find out what xen version upstream intends to use in 5.3, but did not find anything. So now I hope that there is some secret knowledge among the CentOS people you could share? :-) Any hint or link would be helpful. Thanks in advance, Dirk

2 1

CentOS-4 Xen kernel with low RAM and Badness in local_bh_enable at kernel/softirq.c:141
by Kingsly John 03 Dec '08

03 Dec '08

I have small xen VM running centos4 which acts as a router/firewall, and has been working fine for over 1.5 years with 32MB of RAM and a kernel I either got from xensource.org or built myself from their sources. (centos 4 didn't have a xen kernel back then) I lost the kernel to a corrupted disk and decided to use the centos provided xen kernel. All these months 32MB + 64MB Swap was more than sufficient and I never had any problems.(3-digit uptimes) The CentOS Xen kernel is unusable at 32MB and invokes the OOM killer even though there is plenty of swap free (and about 5-10MB of RAM too). After the OOM killer has done it's job there's about 15 MB of RAM free and swap is hardly used at all (1MB at most) I've increased RAM to 64MB and the OOM killer doesn't kick in.. but I am seeing plenty of such messages in the logs ... Dec 2 16:05:21 noc kernel: Badness in local_bh_enable at kernel/softirq.c:141 Dec 2 16:05:21 noc kernel: [<c0121178>] local_bh_enable+0x47/0x6f Dec 2 16:05:21 noc kernel: [<c02177d5>] skb_checksum+0x133/0x25e Dec 2 16:05:21 noc kernel: [<c0250f06>] udp_poll+0x66/0x113 Dec 2 16:05:21 noc kernel: [<c02135fd>] sock_poll+0x19/0x1d Dec 2 16:05:21 noc kernel: [<c016d1a6>] do_select+0x190/0x2c7 Dec 2 16:05:21 noc kernel: [<c016ceb5>] __pollwait+0x0/0x9b Dec 2 16:05:21 noc kernel: [<c0144ae4>] __kmalloc+0x56/0xd3 Dec 2 16:05:21 noc kernel: [<c016d5dc>] sys_select+0x2e7/0x45c Dec 2 16:05:21 noc kernel: [<c010740f>] syscall_call+0x7/0xb Any idea what's causing it / how to make it stop ? I'm running Centos 5 in Dom0 and CentOS 4 in the router domU and there's another couple of Centos 5 domU which are running error free. Kingsly -- --------------------------------------------------------------------------- Kingsly At Users Dot SourceForge Dot Net -- http://kingsly.org/ ---------------------------------------------------------------------------

2 2

Looking for uuid-devel
by Robert Moskowitz 03 Dec '08

03 Dec '08

Just pulled the lastest patches to HIPL (well the last replay was 11/24, so a number of nights behind) and tried a 'make rpm' and got the error: error: Failed build dependencies: uuid-devel is needed by hipl-1.0.4-1.i386 And I can'd find any rpm that has this module. I have tried different things in yum and have not found it. resolvedep, whatprovides, info, list. Nada. I did find a uuidd, but I can't see what files it contains. Note that the author of whatever patch hit me with this dependency is most likely NOT using Centos or even Fedora as their development platform. Where can I find uuid-devel????

2 2

how to configure the mail server to put the code before sending the mail
by ann kok 03 Dec '08

03 Dec '08

Hi All How to configure the mail server to put the code before sending out the mail? eg: When I send out the mail to yahoo to some receiver's address, it needs me to put the number and letter as same as the box before sending out the mail Thank you __________________________________________________________________ Be smarter than spam. See how smart SpamGuard is at giving junk email the boot with the All-new Yahoo! Mail. Click on Options in Mail and switch to New Mail today or register for free at http://mail.yahoo.ca

3 2

My God, it is full of stars
by Ralph Angenendt 03 Dec '08

03 Dec '08

And it is fast! And big! And louder! What is? The new CentOS mail server is, which coincidentally also hosts the mailing lists you are reading right now. After three short hours and (AFAICS) no lost mail we now have the following situation: The mailq on the old mail server now is empty, while the new one is already fighting with stale dns info, unknown users, deferrals and so on. Normal insanity, I'd say. One word to our moderators and/or mailing list administrators: Everything should work as it did on the old machine. If your list *admin* password isn't working anymore, please drop me a mail so we can clear that up. Everybody else: Send even more mails! The infrastructure for that is here now! Cheers, Ralph

12 15

iptables-save: INPUT DROP [26:8260]
by Alexander Farber 03 Dec '08

03 Dec '08

Hello, why does iptables-save print 2 numbers in square brackets? Is it used for anything? Is it number of inspected packets (and what's the other number then)? And what does *filter mean? Thank you Alex $ sudo iptables-save # Generated by iptables-save v1.3.5 on Tue Dec 2 23:53:56 2008 *filter :INPUT DROP [26:8260] :FORWARD DROP [0:0] :OUTPUT ACCEPT [376:82274] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p icmp -m icmp --icmp-type any -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 443 -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 --tcp-flags FIN,SYN,RST,ACK SYN -m limit --limit 1/min --limit-burst 3 -j ACCEPT COMMIT # Completed on Tue Dec 2 23:53:56 2008 $ cat /etc/*release CentOS release 5.2 (Final) 2008010200

3 2

mysql question
by ann kok 03 Dec '08

03 Dec '08

Hi Do you know any good mysql mailing list? I have question what is the different between /var/lib/mysql/mysql.sock /var/lib/mysql/mysqld.sock Thank you __________________________________________________________________ Instant Messaging, free SMS, sharing photos and more... Try the new Yahoo! Canada Messenger at http://ca.beta.messenger.yahoo.com/

3 2

Reassemble software RAID
by Kai Schaetzl 02 Dec '08

02 Dec '08

I have a machine on CentOS 5 with two disks in RAID1 using Linux software RAID. /dev/md0 is a small boot partition, /dev/md1 spans the rest of the disk(s). /dev/md1 is managed by LVM and holds the system partition and several other partitions. I had to take out disk sda from the RAID and low level format it with the tool provided by Samsung. Now I put it back and want to reassemble the array. Machine boots fine from sdb and I was able to re-add /dev/sda1 to /dev/md0 easily. However, I can't do the same with /dev/sda2 to /dev/md1 because there's no /dev/md1 anymore and mdadm tells me it doesn't have the RAID superblock. If possible I want to avoid deleting the already existing setup and data. I'm wondering what I shall do next. Can I simply create /dev/md1 as if it was a new array? Is the problem created by the fact that the running system was booted from a logical volume on /dev/sda2? Should I better boot the system from a live CD and then reassemble/create anew /dev/md1? In general, would it be better to *not* put the main system on a logical volume on a RAID partition? (The other logical volumes carry virtual machines.) Thus: /dev/md0 with /boot /dev/md1 with / (no LVM on it) /dev/md2 managed by LVM Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com

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Anyone with experience with mini itx and Centos4?
by Jason Pyeron 02 Dec '08

02 Dec '08

I am looking to buy a small MB with dual NICs, but I woul like them to be supported directly by the stock kernel. I remember that gigabit nics can be a problem. I think this one (http://www.jetway-mini-itx.com/j7f4-j7f4k1g5d.html) uses the RealteK RTL8110SC and if so (https://www.centos.org/modules/newbb/viewtopic.php?forum=45&topic_id=6983&v… ode=threaded) might still be true. Am I crazy for not using Centos5 or will Centos5 solve all my problems? -jason -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - 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.

2 2

OpenChrome video driver for Centos
by Robert Moskowitz 02 Dec '08

02 Dec '08

I can find xorg-x11-drv-openchrome-0.2.901-1 for EL5, but not the current xorg-x11-drv-openchrome-0.2.903-1 (which only goes from FC8 on). Since my OQOs have the CX700M2 chip and there are listed enhancements for this chip in the 903 version, I would really like to get it...

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CentOS-announce Digest, Vol 46, Issue 2
by centos-announce-request＠centos.org 02 Dec '08

02 Dec '08

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. My God, it is full of stars (Ralph Angenendt) ---------------------------------------------------------------------- Message: 1 Date: Tue, 2 Dec 2008 00:07:08 +0100 From: Ralph Angenendt <ralph(a)centos.org> Subject: [CentOS-announce] My God, it is full of stars To: centos-announce(a)centos.org, centos(a)centos.org, centos-moderators(a)centos.org Message-ID: <20081201230531.GA7265(a)br-online.de> Content-Type: text/plain; charset="us-ascii" And it is fast! And big! And louder! What is? The new CentOS mail server is, which coincidentally also hosts the mailing lists you are reading right now. After three short hours and (AFAICS) no lost mail we now have the following situation: The mailq on the old mail server now is empty, while the new one is already fighting with stale dns info, unknown users, deferrals and so on. Normal insanity, I'd say. One word to our moderators and/or mailing list administrators: Everything should work as it did on the old machine. If your list *admin* password isn't working anymore, please drop me a mail so we can clear that up. Everybody else: Send even more mails! The infrastructure for that is here now! Cheers, Ralph

1 0

LDAP Authentication and Authorisation.
by Friedrich Clausen 02 Dec '08

02 Dec '08

Hello all, At my current job the time has come to unify our LDAP infrastructure into one tree (preferably). The basics are working but we are not sure how to restrict which users can log into which machines. What we would like is for everyone in the (for example) "infra" group to log into all machines while people in the "development" group can only log into development servers. From an initial Google my options seem to be: * LDAP based netgroups * OpenSSH - AllowGroups, DenyGroups * PAM - mod_access Does anyone have any real world, in the trenches experience they would be willing to share? I would like to know which is the most maintainable and easy to hand-over to more junior admins. Thanks, Fred.

2 2

CentOS-4 Xen kernel with low RAM and Badness in local_bh_enable at kernel/softirq.c:141
by Kingsly John 02 Dec '08

02 Dec '08

I have small xen VM running centos4 which acts as a router/firewall, and has been working fine for over 1.5 years with 32MB of RAM and a kernel I either got from xensource.org or built myself from their sources. (centos 4 didn't have a xen kernel back then) I lost the kernel to a corrupted disk and decided to use the centos provided xen kernel. All these months 32MB + 64MB Swap was more than sufficient and I never had any problems.(3-digit uptimes) The CentOS Xen kernel is unusable at 32MB and invokes the OOM killer even though there is plenty of swap free (and about 5-10MB of RAM too). After the OOM killer has done it's job there's about 15MB of RAM free and swap is hardly used at all (1MB at most) I've increased RAM to 64MB and the OOM killer doesn't kick in.. but I am seeing plenty of such messages in the logs ... Dec 2 16:05:21 noc kernel: Badness in local_bh_enable at kernel/softirq.c:141 Dec 2 16:05:21 noc kernel: [<c0121178>] local_bh_enable+0x47/0x6f Dec 2 16:05:21 noc kernel: [<c02177d5>] skb_checksum+0x133/0x25e Dec 2 16:05:21 noc kernel: [<c0250f06>] udp_poll+0x66/0x113 Dec 2 16:05:21 noc kernel: [<c02135fd>] sock_poll+0x19/0x1d Dec 2 16:05:21 noc kernel: [<c016d1a6>] do_select+0x190/0x2c7 Dec 2 16:05:21 noc kernel: [<c016ceb5>] __pollwait+0x0/0x9b Dec 2 16:05:21 noc kernel: [<c0144ae4>] __kmalloc+0x56/0xd3 Dec 2 16:05:21 noc kernel: [<c016d5dc>] sys_select+0x2e7/0x45c Dec 2 16:05:21 noc kernel: [<c010740f>] syscall_call+0x7/0xb Any idea what's causing it / how to make it stop ? I'm running Centos 5 in Dom0 and CentOS 4 in the router domU and there's another couple of Centos 5 domU which is running error free. Kingsly -- --------------------------------------------------------------------------- Kingsly At Users Dot SourceForge Dot Net -- http://kingsly.org/ ---------------------------------------------------------------------------

1 0

Any idea when we will have updated kmod-drbd82 rpm for the latest kernel?
by mbneto 02 Dec '08

02 Dec '08

Hi, After searching the archive I found one post (last october) complaining about lack of kmod-drbd2 rpm for the lastest kernels. Almost two months have passed and no sign of the rpm I was wondering if the mantainer has some news about it. Thanks.

2 1

script to find last accessed time?
by Tom Brown 02 Dec '08

02 Dec '08

Can anyone help me with the syntax to find last accessed time on a bunch of dir's - something like show me the files that were last accessed 6 months or more ago? thanks

4 3

Educentos?
by Christopher Chan 02 Dec '08

02 Dec '08

Is there an Edubuntu equivalent for Centos?

3 5

USB or PCI dialup modem supported by Centos
by Ramon Nieto 02 Dec '08

02 Dec '08

Hello everybody, I've searched google for a while looking for a list of USB or PCI dialup modems supported by CentOS without success. Any information on this subject will be really appreciated. Thank you.

8 24

Two NFS issues
by Russell Miller 01 Dec '08

01 Dec '08

Hi, I was hoping someone would have an idea of what's going on here... We have two NFS issues. One of which is certainly centos based, one of which we're not sure of. First issue is: As of Centos 5, we can't make simultaneous access to a directory via NFS. To duplicate, I cd into a share in two windows, copy a 1G file in the first window, and just do an ls in the other. The ls will hang until the write is done. Turning off apic seems to help a little, but there's still a very significant hang. This problem is not apparent in centos 4.x, even when mounting to the same NFS server. The other problem is - we're seeing tremendous slowdowns when going through an Acopia NFS virtualization server. These slowdowns got much more severe when we moved to Centos 5.2. If we connect to the NFS appliance directly, these slowdowns don't exist. Has anyone seen problems like this? How did you solve them? Thanks. --Russell

3 12

Neighbour table overflow
by Thomas Dukes 01 Dec '08

01 Dec '08

Just started getting this. I tried the following by adding it to my etc/sysctl.conf: net.ipv4.neigh.default.gc_thresh1 = 4096 net.ipv4.neigh.default.gc_thresh2 = 8192 net.ipv4.neigh.default.gc_thresh3 = 8192 net.ipv4.neigh.default.base_reachable_time = 86400 net.ipv4.neigh.default.gc_stale_time = 86400 That pretty much locked things up. Then I tried another googled solution: echo 256 > /proc/sys/net/ipv4/neigh/default/gc_thresh1 echo 512 > /proc/sys/net/ipv4/neigh/default/gc_thresh2 echo 1024 > /proc/sys/net/ipv4/neigh/default/gc_thresh3 And adding it also to etc/sysctl.conf: net.ipv4.neigh.default.gc_thresh1 = 256 net.ipv4.neigh.default.gc_thresh2 = 512 net.ipv4.neigh.default.gc_thresh3 = 1024 Still not working. Any ideas? TIA

9 23

following Centos wiki headless install, but applying to FC10
by Robert Moskowitz 01 Dec '08

01 Dec '08

I have successfully built an install CD following the instructions at: http://wiki.centos.org/TipsAndTricks/VncHeadlessInstall Now I am trying to do the same with FC10 and I am failing in two ways. I have tried to find a similar howto for even FC9, but have not found the right google magic. The first problem should be small. When I set isolinux.cfg to start with: prompt 1 timeout 0 I still get prompted. There is quite a bit more to the beginning of the FC10's isolinux.cfg so that might account for it. But fortunately I do have a keyboard of sorts and a monitor of sorts so I can get to my menu select for remote vnc install. The install then proceeds and gets to setting up eth0, but fails. It seems like dhcp is not succeeding. If I boot from the standard FC10 CD, hdcp does work. Here is my append line: append initrd=initrd.img vnc vncconnect=10.8.6.15 headless ip=dhcp ksdevice=eth0 meth od=http://server.foo.com/fedora/10/os/i386 lang=en_US keymap=us All these commands are listed at: http://fedoraforum.org/forum/showthread.php?t=25826 Any pointers to where to get help on this?

2 2

[CentOS] Apache, SELinux, and document root on a different partition
by Kenneth Porter 01 Dec '08

01 Dec '08

I want to put the document root for an application on a separate paritition that has more space. When I try to configure this I can't access the files in the new location. I've got the SELinux attributes set on the directory and its files, so I'm thinking it's something about the parent path that SELinux doesn't like, but I don't know where that's handled. My partition is mounted to /mnt/bigdisk2, and I put the app in the wbb3tmp subdirectory there: [root@centos wbb3-tmp]# ls -Za drwxr-xr-x apache apache system_u:object_r:httpd_sys_content_t . drwxr-xr-x root root system_u:object_r:file_t .. -rw-r--r-- apache apache system_u:object_r:httpd_sys_content_t WCFSetup.tar.gz -rw-r--r-- apache apache system_u:object_r:httpd_sys_content_t index.html -rw-r--r-- apache apache system_u:object_r:httpd_sys_content_t install.php -rw-r--r-- apache apache system_u:object_r:httpd_sys_content_t test.php [root@centos wbb3-tmp]# pwd /mnt/bigdisk2/wbb3-tmp My Apache VirtualHost block contains this: Alias /wbb3-tmp /mnt/bigdisk2/wbb3-tmp <Directory "/mnt/bigdisk2/wbb3-tmp"> AllowOverride AuthConfig Options Limit Options +Indexes -ExecCGI +FollowSymLinks +MultiViews Order allow,deny Allow from all </Directory> This works if I disable SELinux.

3 6

chmod for directories only
by Robert Moskowitz 01 Dec '08

01 Dec '08

I want to change the permissions on directories, recursively to: drwxr-xr-x but keep the files within the directory tree as: -rw-r--r-- But I can't find an option for chmod to only affect directories. I suppose it won't hurt (in this case) to set the x for the files, but I want some consistancy.

4 4

script to monitor device to output file
by chloe K 01 Dec '08

01 Dec '08

Hi ls there any script / program to check router / switch? eg: sh interface any error to output a file Thank you --------------------------------- Now with a new friend-happy design! Try the new Yahoo! Canada Messenger

2 1

How to delay failed ssh auth
by James B. Byrne 01 Dec '08

01 Dec '08

> -----Original Message----- > From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On > Behalf Of Veiko Kukk > Sent: 28 November 2008 07:06 > To: centos(a)centos.org > Subject: [CentOS] How to delay failed ssh auth > > Hi! > > I need to delay failed ssh password authentication as an additional > measure against brute force ssh attacks. I understand, that shoud be > accomplished through pam, but googling gave me no example. I have > CentOS > 5.2. > > -- > Veiko Kukk You may find this thread helpful. http://lists.centos.org/pipermail/centos/2008-January/051102.html -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

1 0

Mail and list server downtime
by Ralph Angenendt 01 Dec '08

01 Dec '08

Hello, there will be a downtime of the mail and list server tomorrow evening from around 20:00 UTC and a few (hopefully) hours after that. This means that there will be no mail traffic at that time to and from centos.org domains. We need to move away mail from the current machine to a new machine, as our old mailserver is a bit unreliable at the moment (the hardware is showing its age). After the move everything will work exactly as before, only faster, bigger and better. Thanks for your understanding, Ralph

3 2

question on yum-downloadonly
by Jerry Geis 01 Dec '08

01 Dec '08

Hi I found yum-downloadonly and executed my command do that and save the dependencies in my current directory. Now when I execute my command: rpm -i mypackage all the dependencies are not found even though they are in the current directory. if I do a "yum install mypackage" (and its in the current directory) its not found either. How do I now install the mypackage in the current directory and look for all dependencies in the current directory? Thanks, Jerry

3 2

CentOS-announce Digest, Vol 46, Issue 1
by centos-announce-request＠centos.org 01 Dec '08

01 Dec '08

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. Mail and list server downtime (Ralph Angenendt) ---------------------------------------------------------------------- Message: 1 Date: Sun, 30 Nov 2008 23:15:50 +0100 From: Ralph Angenendt <ralph(a)centos.org> Subject: [CentOS-announce] Mail and list server downtime To: centos-announce(a)centos.org, centos(a)centos.org Message-ID: <20081130221550.GB3228(a)br-online.de> Content-Type: text/plain; charset="us-ascii" Hello, there will be a downtime of the mail and list server tomorrow evening from around 20:00 UTC and a few (hopefully) hours after that. This means that there will be no mail traffic at that time to and from centos.org domains. We need to move away mail from the current machine to a new machine, as our old mailserver is a bit unreliable at the moment (the hardware is showing its age). After the move everything will work exactly as before, only faster, bigger and better. Thanks for your understanding, Ralph

1 0

Sendmail - STARTTLS not appear on one client
by happymaster23 01 Dec '08

01 Dec '08

Hi, I have Sendmail configured to use STARTTLS for authentication. On all internet connections and computers (that I have tested) works connection over encrypted SMTP flawlessly. Today I was setting up mail client on PC of my customer and standardily checked boxes, that I want to use SSL for POP3 and SMTP. Next I wanted to check configuration (by sending email from this mailbox to this mailbox) but it does not work. So I have opened telnet, connected via port 25 and writed "ehlo hostname" and then finded out, that there is missing STARTTLS. Is possible, that some bad configuration on client side (firewall, etc...) can cause this error including that this function is missing in printout of ehlo? POP3S working good. >From Sendmail log (/var/log/maillog): Nov 28 19:31:23 server sendmail[11163]: xxx: xxxxx.jizmorava.adsl-llu.static.bluetone.cz [85.207.xxx.211] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA Thank you very much

3 2

CentOS 5 - KDE - wireless ?
by Kevin Kempter 01 Dec '08

01 Dec '08

Hi All; How do I enable/configure wireless in CentOS 5 ? I cannot find knetworkmanager anywhere.. Do I need to install another repository ? I did enable rpmfusion with no luck Thanks in advance...

4 3

how can I stress a server?
by Rudi Ahlers 30 Nov '08

30 Nov '08

Hi all, I have a server, with an Intel DG35EC motherboard, Q9300 CPU, 8GB Kingston DDRII RAM which can't take a lot of load. I have 4 XEN VPS's on there, which doesn't consume more than 4GBM RAM at this stage. Yet, the machine sky rockets at some times. I've moved the XEN VPS's to another server, with 4GM RAM, and it doesn't cause the same problems. So, apart from memtest86 how else can I stress test the server to find out what the problem is? -- Kind Regards Rudi Ahlers

17 47

Installing CentOS security updates to RHEL machines? (RHN subscription expired)
by Alexander Farber 30 Nov '08

30 Nov '08

Hello, I hope my question is not annoying. I work as sysadmin at a 400 users firm and we have around 20 CentOS 4/5 servers and VMs and CentOS is awesome, thank you! However we have 4 important SAP-servers running RHEL5 and our RHN subscription has unforunately expired and buying it again is not an option right now. Installing CentOS is not an option too, because we'd have to pay for SAP-reinstall. Has anybody have been in a similar situation and figured out a good way to make "yum update" on RHEL machines to work against CentOS repositories? Regards Alex

7 8

Enterprise Package Tracker
by Vandaman 30 Nov '08

30 Nov '08

Is there a utility such as rpmfind that exists for enterprise rpms? One could locate rpms from various repos e.g. - Centos base, extras, plus - EPEL - RPMForge - KBS repos Due to the requirement of a subscription, upstream or others like Oracle Unbreakable linux couldn't be listed. Regards, Vandaman.

6 8

KDE4
by Martin Marques 30 Nov '08

30 Nov '08

Is there any repo with binary rpm of KDE 4.1 for CentOS 5?

3 2

installation help
by Kevin Kempter 30 Nov '08

30 Nov '08

Hi All; I'm trying to instal CentOS on my new laptop but I've run into a few issues. It's a Dell Precision M6400 - I'm installing CentOS 5 (64bit) running KDE I have 3 issues: 1) I cannot get the wireless to work 2) I cannot get sound to work 3) I cannot get the full screen resolution I can go to administration --> display and under the 'Hardwae' tab I can configure the display as a generic or as a Dell 1920x1200 but no matter what I choose the 'Settings' tab only lets me choose a max of 1400x1050 I can get the wireless and sound to work in Fedora 10 but I'm not sure how to tell specifically what devices they are.. I thought I could use Fedora 10 to help debug the sound & wireless. Thanks in advance for any help ...

7 14

IMAP rule problem
by Anne Wilson 29 Nov '08

29 Nov '08

I have a problem with local mail on this netbook. I'm sure it's something obvious, but I could use another brain's input. Fri, 2008-11-28 13:15:27 - TCP Packet - Source:192.168.0.7,58711 Destination:88.97.17.41,143 - [IMAP rule match] Fri, 2008-11-28 13:15:27 - TCP Packet - Source:192.168.0.7,58711 Destination:192.168.0.40,143 - [IMAP rule not match] The first one delivers mail through my Roaming profile, using googlemail's smtp. The second one sends to my own smtp server for local delivery, something that's happening all the time from other boxes. Since my brain is reluctant to get in gear over this, where should I be looking for the problem? Anne

2 2

Re: [CentOS] IMAP rule problem
by Anne Wilson 29 Nov '08

29 Nov '08

On Saturday 29 November 2008 12:39:10 you wrote: > Anne -- You need to provide a context. What application/service is > reporting these messages - a firewall, imap daemon ...? > They originate from my router. > Also, the destination port is 143, so this is imap, and not related > to "sending" mail, which will be on port 25, 587 or 465. > Sure - I was thinking that they originated from my server, but I did say that my brain refuses to go into gear today . > My suspicion is that you have filtering on a firewall or your imap > daemon that is allowing you to connect to your imap server from your > non-public network ipnumber (192.168.0.7) to its public ipnumber > (88.97.17.41), but not to its non-public ipnumber (192.168.0.40). > I think I should ignore this for today. That address (192.168.0.7) is a dhcp address, which must have been my laptop wifi connection, and since I had no wired connection at the time, if there had been anything really wrong I wouldn't have been able to use my mail, and I would have known about it. It probably represents a fleeting problem. > Of course the non-public numbers don't go outside your network, so > there may be NATting going on (specifically in the non- public --> > public case) that's obscuring the issue. > Since it's the router, the commonality seems to rule that out. > By the way, you seem to have asked about this back in March. > Did I ask something similar? I don't recall - but then I don't recall what I had for breakfast yesterday. I'll look back and see if I can find anything. All the same, thanks to your breaking my circle of thinking, I don't think there's really a problem. If it occurs again I'll look more closely. BTW, your reply-to plays havoc with normal list behaviour. Anne

1 0

OT: Bugzilla command line interface?
by MHR 29 Nov '08

29 Nov '08

Does anyone here have a good working knowledge of the command line interface to Bugzilla? If so, please contact me off-list as this is OT here, but my inquiry on the bugzilla list met with silence.... Thanks. Mark Hull-Richter Linux/C Developer

2 1

isw_xxxxxxxx missing?
by Davide Cittaro 29 Nov '08

29 Nov '08

Hi all, I've installed CentOS 5.2 on a sun x2250. The installer goes fine and I can setup my root with lvm on /dev/ mapper/isw_xxxxxxxx_Volume0, that is the hardware RAID1 for two disks available. As the system boots lvm complains of a duplicate PV and decides to use /dev/sda, so the physical disk, not the raid device... I see with surprise that the raid device is missing! Needless to say, in a couple of days and reboots I've completely messed up the filesystem and the bootloader... Is there a way to fix this? d

2 1

[Help] About Participate in CentOS - knoweldge sharing.
by wu yaling 28 Nov '08

28 Nov '08

Dear friend, We are conducting a study on the motivation of the knowledge sharing on the CentOS community. The contributors’ experience to Linux is very important to the design and management of this knowledge platform. Would you please post the following on-line questionnaire message to the CentOS platform or forward the message to the members? After the survey is done, we will randomly select twenty persons and present them with USB 2GB Flash Drives. Besides, with each valid questionnaire, we will donate US $1 dollar to CentOS.org. The result of this survey is analyzed in an anonymous way and is only regarded as the academic use. Please help us to complete the data collection. Thanks so much for your help. Cheers, Joanne [The Message content] Dear friends, We are conducting a study on the motivation of the knowledge sharing on CentOS. Your experience of the read from and write to CentOS is very important to the design and management of this knowledge platform. The survey will take abouttwo minutes. We deeply appreciate your help on answering the following questions. After the survey is done, we will randomly select twentypersons and present them with USB 2GB Flash Drives. Besides, with each valid questionnaire, we will donate US $1 dollar to the CentOS.org. The result of this survey is analyzed in an anonymous way and is only regarded as the academic use. Please feel free to fill out the questionnaire. Thanks again for your time and valuable input. May happiness and health be with you everyday! ★ On-line Questionnaire: http://140.119.19.152:8080/CentOS/ 　 ShariS. C. Shang Eldon Y. Li Professor, Department of Management Information Systems, NationalChengchi University Tel.: +886-2-82374038；Fax: +886-2-29393754 ；E-mail: s1213527(a)yahoo.com.tw ______________________________________________________________________________________________________ 付費才容量無上限？Yahoo!奇摩電子信箱2.0免費給你，信件永遠不必刪！ http://tw.mg0.mail.yahoo.com/dc/landing

6 5

How to delay failed ssh auth
by Veiko Kukk 28 Nov '08

28 Nov '08

Hi! I need to delay failed ssh password authentication as an additional measure against brute force ssh attacks. I understand, that shoud be accomplished through pam, but googling gave me no example. I have CentOS 5.2. -- Veiko Kukk

7 6

how to connect to a switch with a serial cable? - what command(s) to use?
by Rudi Ahlers 28 Nov '08

28 Nov '08

Hi all, I see one of our switches doesn't want to respond to HTTPS or SSH commands, and I know it's connected to a server via a serial cable. I'm 3 hours drive from that server at the moment, so how can I connect to it from the Linux server, via SSH? -- Kind Regards Rudi Ahlers

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