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An Open-iSCSI Question
by Clint Dilks 03 Feb '10

03 Feb '10

Hi People Using Open iSCSI I have been able to create and mount multiple iSCSI partitions and have them mount at boot. Now I wanted to setup a situation where one of the visible iSCSI partitions mounts at boot and the other is only available if I manually connect to it. This led me to the following command *iscsiadm -m node -T iqn.2001-05.com.equallogic:0-8a0906-237781f06-770000000134b676-inf2-san1 -p 192.168.1.100:3260 --op update -n node.startup -v manual *which stops the server from logging into the partition automatically. This is fine and provides me with the functionality I need, but if anyone run a discovery against the iSCSI storage again eg *iscsiadm -m discovery -t st -p 192.168.1.100:3260 *then node.startup for inf2-san1 gets set back to automatic. Is there any way to make the node.startup setting for inf2-san1 stick even after a discovery ? Thank you :)

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Internet access not working on CentOS but on Windows when travelling
by Mathieu Baudier 02 Feb '10

02 Feb '10

Hello, I'm currently travelling (in south-eastern Europe) with a netbook (Samsung NC 10) running CentOS 5.4 i386. I frequently try to access internet from bars or hotels (mostly via wireless). Although it works pretty often, it happens quite regularly that in some hotels I cannot access internet from CentOS while it is possible from Windows. This is the case in the hotel where I am currently and I'd like to dig this further. To be more precise: - in such cases, connecting to the wireless network itself works (using NetworkManager) - this is when I try to open a web page in Firefox that after a while I get a "page not found exception" - there is no problem on a Windows XP which is also installed on the computer - Fedora 12 has the same issue as CentOS - I suspect that in such cases the network is configured in a windows-specific / non-standard manner (but I had the pb often enough to justify addressing it): I installed Samba and started the winbind service, but it did not help (I know pretty much nothing about Windows networking but doing this already did some magic for me in other contexts...) - there are many places where I could connect with CentOS and wireless without any problem, and it also work in my wireless network back home, so my CentOS config is OK - interestingly, my google phone (G1 running Android 1.6) could access internet via the wireless network of the hotel where I am currently (while CentOS and Fedora can't) Did anyone already face such an issue? Any idea how I could analyze further? Or what I could try? This is not a big deal since I can always reboot to check internet, but all the software I use for my work are on CentOS, so it would be much more practical if I could reliably access internet from it as well. Thanks in advance and cheers from the Black Sea under the snow... Mathieu

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Re: [CentOS] Installing an SSL Cert
by J.Witvliet＠MINDEF.NL 02 Feb '10

02 Feb '10

-----Original Message----- From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf Of ML Sent: Wednesday, January 27, 2010 1:38 AM To: CentOS mailing list Subject: [CentOS] Installing an SSL Cert HI All, I am considering buying this: http://www.godaddy.com/Compare/gdcompare_ssl.aspx?isc=sslqgo003a Since I have a domain that will be collecting data and processing payments. Where can I find instructions on how to install the certificate? Do I have to run another domain or sub domain for the store? Or can I just run the whole domain on https? Thanks, -Jason _______________________________________________ Ever considerd cacert.org ? ______________________________________________________________________ Dit bericht kan informatie bevatten die niet voor u is bestemd. Indien u niet de geadresseerde bent of dit bericht abusievelijk aan u is toegezonden, wordt u verzocht dat aan de afzender te melden en het bericht te verwijderen. De Staat aanvaardt geen aansprakelijkheid voor schade, van welke aard ook, die verband houdt met risico's verbonden aan het elektronisch verzenden van berichten. This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. The State accepts no liability for damage of any kind resulting from the risks inherent in the electronic transmission of messages.

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Find and excluding directory
by Tom Brown 02 Feb '10

02 Feb '10

Hi I have to use find to change the perms of a directory and files within that directory recursively but i need to exclude a directory within the top level directory, as its a netapp and so contains a read only .snapshot dir. I have tried... # find /var/data/foo -path '\.\/\.snapshot' -prune -o -exec chown usera:groupb {} \; but chown: changing ownership of `/var/data/foo/.snapshot': Read-only file system chown: changing ownership of `/var/data/foo/.snapshot/hourly.0': Read-only file system chown: changing ownership of `/var/data/foo/.snapshot/hourly.0/filename': Read-only file system any clue ? thanks

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dm-crypt/LUKS the state of the art for block device encryption?
by Robert P. J. Day 02 Feb '10

02 Feb '10

it's been a while since i've played with filesystem encryption so, on centos 5.4 (and other linux distros), is dm-crypt/LUKS considered to be the state of the art WRT encryption? i remember other solutions like loop-aes and others, but what's considered the gold standard these days? rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Kernel Pedantry. Web page: http://crashcourse.ca Twitter: http://twitter.com/rpjday ========================================================================

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Was, Re: APC Smart-ups "status codes" (slightly OT), is replacement batteries
by m.roth＠5-cent.us 02 Feb '10

02 Feb '10

> > On Fri, 2010-01-29 at 16:53 -0500, m.roth(a)5-cent.us wrote: <battery change tale o' woe snipped> >> But the idiot light's still on. <snip> Well, I followed the link to the NUT info, and tried a "manual" calibration, and still no joy. Swapping in a cartridge that's still good, the light goes out, so it's not the unit. However, googling for other vendors' battery replacement kits for the RBC43, and then looking at another one, led me to one question, since they're all 12V, 5AH: anyone here know if they have to be HR (high release)? mark

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Passwordless ssh
by Warren Michelsen 02 Feb '10

02 Feb '10

On Mac OS, in order to allow ssh using dsa keys, I would copy ~/.ssh/id_dsa.pub from my machine into ~/.ssh/authorized_keys of the target machine. I've created .ssh directories in my account home as well as in /root and copied the respective keys to authorized_keys files in each. Strangely, I can now ssh as root with no password but my own user account still prompts for a password. What might be wrong? Interestingly, passwordless root ssh log-in worked while 'PermitRootLogin' in /etc/ssh/sshd_config was just 'yes' and before I changed it to 'without-password'.

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CentOS as an internet kiosk : how to create a "fresh" user upon leaving GNOME ?
by Niki Kovacs 02 Feb '10

02 Feb '10

Hi, I'm currently busy setting up a machine for use as an internet kiosk. Here's what I aim to do. - There's only one user on the system, 'invite'. One (very simple) password. The machine is to be used publicly and freely. - To ensure some privacy, there's one detail though. The best thing would be that upon disconnection from the GNOME session, the user 'invite' gets wiped from the system (userdel -r) and then created anew, with his password already set. This I can do. - The tricky part is to do this upon disconnect. There's a function in System > Preferences > Session, where I can choose programs to run upon GNOME startup... but there's nothing similar for the disconnection. - Writing a script disconnect.sh and then creating a desktop shortcut for it would be to no avail, since 'userdel' and 'useradd' can only be called as root. Any idea how I could do this ? The idea is that every new user begins with a clean slate. Cheers, Niki

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cfengine version 3?
by Les Mikesell 02 Feb '10

02 Feb '10

Is anyone working with cfengine v3? It looks like it has some interesting design changes and a commercially supported windows version now. Can anyone share real-world experiences? -- Les Mikesell lesmikesell(a)gmail.com

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very large difference between df and du (10 GB, hard to believe)
by Robert Grasso 02 Feb '10

02 Feb '10

Hello, I have a small server running a tool (RT : perl + mysql + apache) for our support team. I stripped down everything else. The OS is CentOS 4.8. I noticed a difference between df and du which is hard to believe : according to df, I am using 29 GB [root@cedrat-rt ~]$ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 33G 29G 2.8G 92% / none 506M 0 506M 0% /dev/shm (there are no other partitions - ok, I could have partitioned it a bit more) but according to du -kshxc /* my largest directory is /var (because of mysql) and the grand total is 19 GB I have a 10 GB difference between both outputs. I verified with tune2fs -l /dev/sda1 (...) Block count: 8703205 Reserved block count: 435160 that is, the ordinary 5% the journal size : debugfs -R "stat <8>" /dev/sda1 yields Size: 33554432 with a block size of 4096, this gives 128 MB I rebooted on the CentOS v4.8 CD #1, started "linux rescue" : mounting /dev/sda1, I get the same 29 GB used e2fsck reports a clean filesystem e2fsck -f does not reports further errors. Does anybody have a suggestion ? Best regards --- Robert GRASSO - System engineer

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