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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

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