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Package updates for 5.4?
by Mitch Patenaude 27 Jan '11

27 Jan '11

We're running a large cluster, and are leery of upgrading them all to 5.5, but would like to find the latest security patches. Is there a repo for this? I can't seem to find a 5.4 specific update repo with anything since last March. Is 5.4 EOL'd? Thanks, -- Mitch

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Re: [CentOS] SSH Automatic Log-on Failure - Centos 5.5
by James Bensley 27 Jan '11

27 Jan '11

Hello all, I've been reading this thread and have a question. I would like to set up passwordless ssh between two servers for some automated tasks but I don't like the paswordless key's option. How can I supply a passphrase when generating my keys but still have this process automated? --James. (This email was sent from a mobile device)

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How to disable screen locking system-wide?
by Bob Eastbrook 26 Jan '11

26 Jan '11

By default, CentOS v5 requires a user's password when the system wakes up from the screensaver. This can be disabled by each user, but how can I disable this system-wide? Many of my users forget to do this, which results in workstations being locked up. Bob

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Re: [CentOS] pen drive, hard disk, cd not being detected
by Ritika Garg 26 Jan '11

26 Jan '11

The problem occurred after I downloaded and compiled the package for enabling wireless on the laptop from the site ' www.broadcom.com/support/802.11/linux_sta.php' which I got to know from the site 'wiki.centos.org/HowTos/Laptops/Wireless/Broadcom'

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Re: [CentOS] ethernet configuration
by Ritika Garg 26 Jan '11

26 Jan '11

'/sbin/ifconfig -a' returns: lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU :16436 Metric:1 RX packets:1489 errors:0 dropped:0 overruns:0 frame:0 TX packets:1489 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:2499880 (2.3 MiB) TX bytes:2499880 (2.3 MiB)

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libsrtp package anywhere?
by Bob Beers 26 Jan '11

26 Jan '11

Hi list, I'm trying to create an asterisk 1.8 rpm with SRTP. I found mention of a libsrtp rpm, <http://qutecom.ipex.cz/RPMS/srtp-1.4.4-1.i386.rpm > in these instructions, <http://www.voip-info.org/wiki/view/Asterisk+SRTP> but it is unreachable (by me, anyway). The libSRTP source is here, <http://srtp.sourceforge.net/download.html>. Has this already been packaged for CentOS 5? Thanks, -Bob Beers

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how to move forward/undo/revert/fix re: a failed CentOS 5.5 to SL 5.5 migration ...
by Larry Vaden 26 Jan '11

26 Jan '11

For various reasons which seemingly fail the necessary/sufficient tests with the benefit of hindsight, I attempted to migrate a shell machine which is the beach front from which I work (not a production server) from CentOS 5.5 to Scientific Linux 5.5 yesterday. Karanbir is quoted on this list as having said something like: "All that you should need to do is install centos-release, remove redhat-release rpms and just yum update the machine, which should bring in all packages changed by CentOS ( since they will have a slightly higher E-V-R )." In other words, is there a get out of jail card based on Karanbir's stanza which will return the machine to a consistent state without a fresh install? The results from the bad migration are below the sig. The stanza used was from the SL mailing list, namely: "To be REALLY sure of a full conversion one might try: yum reinstall $(rpm -qa --qf "%{name}.%{arch} %{vendor} \n" | \ grep -i centos | cut -d ' ' -f 1 | sort | uniq | grep -v kernel) Need special handling for kernel and kernel-devel as you will get messages about multiple versions being allowed, and cutting off the limb on which you are standing is not recommended." In short, I pray for the community's thoughts about how to proceed with either going forward, reverting back to Centos 5.5 or even RHEL 5.5 without having to do a fresh install. THANKS for your help. kind regards/ldv === [root@shell work-2011-01-25-migrate-centos55-to-scientific-linux55]# yum list installed | grep -i centos geronimo-specs.i386 1.0-0.M2.2jpp.12.el5.centos installed geronimo-specs-compat.i386 1.0-0.M2.2jpp.12.el5.centos installed nss.i386 3.12.8-1.el5.centos installed nss-devel.i386 3.12.8-1.el5.centos installed nss-tools.i386 3.12.8-1.el5.centos installed [root@shell work-2011-01-25-migrate-centos55-to-scientific-linux55]# BUT, more devils in the details are: [root@shell SL-rpms]# rpm -ivh kernel* warning: kernel-2.6.18-194.32.1.el5.i686.rpm: Header V3 DSA signature: NOKEY, key ID 192a7d7d Preparing... ########################################### [100%] package kernel-headers-2.6.18-194.32.1.el5.i386 is already installed package kernel-2.6.18-194.32.1.el5.i686 is already installed package kernel-devel-2.6.18-194.32.1.el5.i686 is already installed file /boot/.vmlinuz-2.6.18-194.32.1.el5.hmac from install of kernel-2.6.18-194.32.1.el5.i686 conflicts with file from package kernel-2.6.18-194.32.1.el5.i686 file /boot/System.map-2.6.18-194.32.1.el5 from install of kernel-2.6.18-194.32.1.el5.i686 conflicts with file from package kernel-2.6.18-194.32.1.el5.i686 file /boot/config-2.6.18-194.32.1.el5 from install of kernel-2.6.18-194.32.1.el5.i686 conflicts with file from package kernel-2.6.18-194.32.1.el5.i686 file /boot/symvers-2.6.18-194.32.1.el5.gz from install of kernel-2.6.18-194.32.1.el5.i686 conflicts with file from package kernel-2.6.18-194.32.1.el5.i686 file /boot/vmlinuz-2.6.18-194.32.1.el5 from install of kernel-2.6.18-194.32.1.el5.i686 conflicts with file from package kernel-2.6.18-194.32.1.el5.i686 file /lib/modules/2.6.18-194.32.1.el5/kernel/arch/i386/crypto/aes-i586.ko from install of kernel-2.6.18-194.32.1.el5.i686 conflicts with file from package kernel-2.6.18-194.32.1.el5.i686

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Re: [CentOS] pen drive, hard disk, cd not being detected
by Ritika Garg 26 Jan '11

26 Jan '11

Among many messages that 'dmesg' displays, the following seems to indicate that something might be wrong: mtrr:type mismatch for c1fe0000,10000 old:write-back new:write-combining I can't understand what does the above mean?

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Basic Permissions Questions
by James Bensley 26 Jan '11

26 Jan '11

Hi List :) So, I have a folder1, its owner is user1 who has r+w on the folder. User2 is the group owner who only has read access (when I say user2, I mean the group called user2, because when you make a new user the OS can make them their own group). You can see these permissions below: [user2@host test]$ ls -l drw-r----- 3 user1 user2 28 Nov 2 16:17 folder1 How ever user2 can not 'cd' into this directory, and gets the following out put form 'ls -l folder1' [user2@host test]$ ls -l folder1/ total 0 ?--------- ? ? ? ? ? sub-folder And the sub-folder name is written in white text flashing on a red background. So, it seems to me that there is some permissions problems here. What permissions are required on the group settings to allow a group user to browser folder1 and its sub folders and read the files in side if it isn't 'r' ? **Note: I have used sudo to replicate permissions through the directy structure: [user2@host test]$ sudo ls -l folder1/ drw-r----- 2 user1 user2 4096 Jan 24 06:49 sub-folder -- Regards, James. http://www.jamesbensley.co.cc/ There are 10 kinds of people in the world; Those who understand Vigesimal, and J others...?

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Re: [CentOS] Basic Permissions Questions
by Les Bell 26 Jan '11

26 Jan '11

Edo <ml2edwin(a)gmail.com> wrote: >> If user1 writes a file in folder1 will user2 be made the default group owner, is there a way of enforcing this and with the required privileges (r for files, rx for directories?). Yes. If user1 belongs to the user2 group, that’s how it should [already] work. << The problem here is the RH "User Private Group" scheme, which means that user1 is only a member of the group user1 and user2 is only a member of the group user2. So their group memberships, by default, don't intersect and user2's only access to user1's files is by virtue of the "other/world" permissions, which depend upon the umask (but don't give access, by default). I've written this up (again, for a course I wrote some years ago, but it's still mostly relevant) at http://www.lesbell.com.au/Home.nsf/web/Controlling+Access+to+Files?OpenDocu… - see the section near the bottom entitled " Red Hat's User Private Group Philosophy" which explains how it should be used (the secret is to make the user administrator of their own group with gpasswd -A). The RH approach, imho, is better than a global group, "users", as found on other distros, because there's no real difference between "users" and "world". One easy way to allow shared access - and this will work over Samba - is to create a group for the users, e.g. "accounts" and make the various users members of that group (as a secondary group). Then create a shared directory for them, chown it to be owned by the group (e.g. chown me:accounts /home/accounts) and then set the SGID bit on the directory (chmod 2777 /home/accounts). Now, whenever anybody creates a file in that directory, it will be owned by that user and the shared group "accounts", rather than the primary group of the creator. See the section in that article on "Permissions on directories". I actually haven't tested that approach with SELinux, but I can't see that it would interfere. Best, --- Les Bell [http://www.lesbell.com.au] Tel: +61 2 9451 1144

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