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Reloading /etc/hosts
by Robert Moskowitz 04 Aug '08

04 Aug '08

I am doing some testing and am having to make many changes to /etc/hosts Is there a way to reload the /etc/hosts file without doing a service network restart? I hope that in a while I can run BIND with a bunch of faked-out zone files (did this once to crack a Vonage PAP2). But for right now, I cannot introduce BIND to the equation....

4 5

Isolinux disk error 20; AX=4280, drive EF
by Ed Westphal 03 Aug '08

03 Aug '08

I thought I'd be clever and buy a DVD for 5.2 from LinuxOnline.biz. Well, just got around to trying it with the above results. Does the error mean I have a 'bad' DVD disk image? Please advise. Thanks.

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Using CentOS 5 as server; best way to setup NFSv4?
by Ryan Dunn 03 Aug '08

03 Aug '08

I've got a server running CentOS 5.2 and has a working NFSv4 server. I've been looking for some help on this on the net, but haven't come across anything that looks like it would pertain to my situation. Basically, I've got a mixed distro environment (CentOS, Fedora, openSuSE, Ubuntu, Puppy, and yikes possibly a Windows box) on various desktops and laptops that I want to connect to my server. Currently, I've got it setup so that it is only NFSv4 with a host mask. My first concern is that it authenticates to the machine, not the user. Second, that the user is identifed by the UID on the local machine, not the actual user name. Since Centos/Fedora start UID at 500 and Ubuntu/opensuse start at 1000, even though the names are the same, UID is not. I'd rather not have to reID on half my machines Third, I know I'll need samba for the windows box. So, if someone were to get on my local network and have the same uid as I have, then they could mount my shares as rw and have at it. The ideal situation is that a user would logon to a local box, then when he wants to access a share, it sends the credentials to the server, and mounts the share. This is all for my home setup; basically, I'd like to have my directories be mounted rw for myself, but if i have guests over, have them be able to mount read only (sharing pictures with family memebers that have laptops, etc). Thanks, Ryan

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Darwin Calendar Server on Centos 5
by dnk 02 Aug '08

02 Aug '08

Has anyone had any luck getting Darwin Calendar Server installed onto centos 5? Any tutorials anywhere? Dustin

1 0

'initrd' image of CentOS (domU) on Ubuntu (dom0)
by Admin Admin 02 Aug '08

02 Aug '08

Hello, What is the best way to get the xen enabled CentOS 5.2 vmlinuz and initrd images for use as a guest domain (domU) on Ubuntu host domain (dom0). Is there a site where these are available? I am hoping that I could use the vmlinuz from the latest kernel rpm, if I go that route, how could I generate the initrd image given that my host is Ubuntu? These are for use with post install of domU, which is setup using xen-create-image. Thanks

4 7

Load Average ~0.40 when idle
by listmail 02 Aug '08

02 Aug '08

I am running CentOS 5 on a dual-dual-core Intel machine, and I am seeing a load average of between 0.35 and 0.50 while the machine is idle, i.e. no processes appear to be running. Both top and uptime report the same thing. Looking at top, I cannot see any processes that are using CPU time except for top and init, and they are not using enough cycles to push up the load average. According to top, there are occasional tiny (like 0.5%) bumps in the system usage occasionally, and almost no user space usage. Again, not enough to account for the load average I am seeing. I have tried a couple of kernel updates, and upgraded from CentOS 5.0 to 5.2, none of which make any difference. Has anyone else seen this? And can anyone recommend a way to figure out what is causing the load average to be this high when the machine is idle? Thanks, --Bill

10 29

Port Closing Question..
by Ryan Nichols 01 Aug '08

01 Aug '08

Is there a software avail or a process that will monitor two ports and if there is no traffic close them so the program that is using them can reuse them? I talked to the vendor and they told me I needed to do this on the NAT/Firewall , but I dont see anything like that on my router. So any suggestions ideas? thanks, Ryan Nichols

5 5

OT: backup media options
by Monty Shinn 01 Aug '08

01 Aug '08

Greetings. Sorry for the OT, but I'm looking for some advice regarding archiving. I've always been a tape archive believer, but with SATA drives becoming more reliable and much larger, I'm wondering if it is time to change my opinion. What are the benefits/pitfalls to begin archiving to "enterprise" level SATA drives? Is it possible to use Amanda or Bacula to archive to a drive, and maintain a archive regimen? Archive to the drive, when the drive is full put it in an anti-static bag, and place it in storage. Possibly archive to a mirrored pair if one is really concerned. We are considering using LTO4 as an archive medium. With the tape densities these days, it appears the tapes are rather fragile, and that head gap seems awful small. Any thoughts are greatly appreciated. Again, I'm sorry for the OT, but I figured I'd get knowledgeable responses from this list instead of sales pitches... Thanks in advance for your time. Monty

2 1

Lost Sound after Firefox crash
by Ed Donahue 01 Aug '08

01 Aug '08

My Firefox crashed and I lost sound, is there a way to release the lock Firefox had on sound when it crashed? I was streaming sirius radio at the time of the crash. Is there a daemon I can restart? I could just reboot but I'm not windows admin :) I logged out of the GUI then back in, would restarting X clear it up?

2 2

selinux & httpd & portmap
by Toby Bluhm 01 Aug '08

01 Aug '08

Having problems starting httpd & portmapper #service httpd start /usr/sbin/httpd: error while loading shared libraries: libm.so.6: cannot open shared object file: No such file or directory and I traced it to selinux, which I had just turned on for the first time: # sestatus SELinux status: enabled SELinuxfs mount: /selinux Current mode: enforcing Mode from config file: enforcing Policy version: 21 Policy from config file: targeted I can #setsebool -P httpd_disable_trans on and httpd starts - but there's zero enforcing now as I understand it. Further digging & I get to: # cat /var/log/audit/audit.log | audit2allow -m local module local 1.0; require { type portmap_t; type httpd_t; type file_t; class lnk_file read; class file { getattr read execute }; } #============= httpd_t ============== allow httpd_t file_t:file { read getattr execute }; allow httpd_t file_t:lnk_file read; #============= portmap_t ============== allow portmap_t file_t:file { read getattr execute }; allow portmap_t file_t:lnk_file read; Other stuff like postfix, postgrey, amavisd are working fine since turning selinux on. Before I make a mess of things with trying to make a new policy, shouldn't two basic services like portmap & httpd already be allowed to run out of the box by selinux? If not, am I going down the right path to get it working? Thanks -- Toby Bluhm Alltech Medical Systems America, Inc. 30825 Aurora Road Suite 100 Solon Ohio 44139 440-424-2240 ext203

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