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directory permissions set to 600?
by Ski Dawg 22 Jul '10

22 Jul '10

Hello all, Today, I ran across a directory in /etc/ on one of our servers whose permissions where set to 600 (drw-------) with root being the owner. The directory is for the firewall package for the server, so it is not something malicious. Checking some other systems, they also have this directory and the permissions on those servers is also 600, so it isn't just a messed up permissions on this one machine. What is the difference between permissions of 600 and 700 for a directory, that is owned by root (group root)? Is there a reason why some directory should be set to 600 instead of 700? -- Doug Registered Linux User #285548 (http://counter.li.org) ---------------------------------------- Never trust a computer you can't throw out a window. -- Steve Wozniak

9 16

xguest?
by m.roth＠5-cent.us 22 Jul '10

22 Jul '10

Is there an xguest package for CentOS? I've been googling, but haven't found one yet. mark

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redundant networked secure file system recommendation
by Boris Epstein 22 Jul '10

22 Jul '10

Hi all, We are currently running a NFS-based server centric setup. I would like to set up something where I can easily have more than one redundant server, security/authentication (this part seems a little flaky with NFS, at least did several years ago), with the capability to easily add/remove servers as necessary, take redundant servers down for maintenance, etc. Total volume we expect to run on the server side will be somewhere between 10-30 TB. The servers will most likely be CentOS machines, the clients mostly Linux machines with some Macs and possibly Windows (the latter part not that important). Any insight, thoughts and recommendations will be much appreciated. Thanks. Boris.

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disabling touchpad in CentOS 5.5
by Sameer Oak 22 Jul '10

22 Jul '10

I've HP 520 laptop. I installed CentOS 5.5 a few days back. The laptop has some weird placing of touchpad that is frustrating me while typing. Please advise me how to disable touchpad on CentOS 5.5. -- Regards, - samoak.

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DSL battling rojter - help!
by Mark 21 Jul '10

21 Jul '10

My internet connection is through a Siemens Speedstream 4100 DSL modem connected to AT&T (sbcglobal.net) and a Dlink WBR-2310 router. Late last night, I changed the administrative password on the router, and for some reason it didn't take right, so I had to reset the router to get the password cleared. Unfortunately, this also lost all my connection settings to the DSL, and I lost the internet for a while. After some effort and a couple of phone calls to AT&T technical support, I determined the following: 1. If I connect my CentOS (main) box to the DSL modem, I can log into the modem and check all the settings, and I can ping sites on the web from there, but I can't actually get any web pages to load. This is using Firefox 3.6.4 (the L&G). 2. If I connect a WinXP box to the modem, it gets to the web without any trouble. 3. If I connect the router to the modem and run the machines through the router, no one gets to the web. I managed to get it to a point where I could acquire an IP address, but nothing on the web was visible. I'll figure out the router problem one way or another, but it really concerns me that I couldn't get to the web from my CentOS box at all. Before the router password fiasco, everything was working absolutely perfectly, and I did not change ANY settings on my machines. Now, I do have a line in /etc/hosts that sets my machine id, and its IP address to 192.168.0.100, which is what it normally should be for access through the router as it is the primary machine on it. (I need that because my VMWare SMB is set up to use that for connections between my virtual XP machine and my CentOS host.) Could that be the problem with internet access directly through the DSL modem? If so, how do I change this to ensure that the hostname is set properly but the IP address matches whatever the DSL modem gives back? How do I then also ensure that the hostname and address are set right so my host-VMWare samba connection still work? Otherwise, what? Thanks. Mark

5 12

Trigger after yum update
by przemolicc＠poczta.fm 21 Jul '10

21 Jul '10

Hello, we have installed non-repository based software on our centos servers (e.g. vmware tools). Each time we do 'yum update' we have to run several scripts to check if these software works after update. Sometimes we forget ... It it possible to configure any sort of triggers which will run automatically after 'yum update' ? I'd like to avoid writing shell wrappers for yum and looking for yum-way solution ;-) Regards Przemyslaw Bak (przemol) ---------------------------------------------------------------------- Wyprzedaz do -70%!!! Wejdz na Endo.pl http://linkint.pl/f2791

2 1

samba upgrade 3.0 - 3.x problem convert passdb.tdb
by camun 21 Jul '10

21 Jul '10

Hello after several days of searching, I have not found a definitive answer to the problem samba Migrating from 3.0.x to 3.3.x. (Migrating from 3.0.x to 3.3.x Can Fail to Update passdb.tdb Correctly (bug # 6195) . passdb.tdb break occurs in the file where the new samba starts. Any suggestions or someone going through the same problem? (I'm running samba 3.0.28 with upgrade to 3.5.4 (Sernet repo) []´s Camun.

1 0

LVM issue
by Phil Manuel 21 Jul '10

21 Jul '10

Hi We use AoE disks for some of our systems. Currently, a 15.65Tb filesystem we have is full, I then extended the LVM by a further 4Tb but resize4fs could not handle a filesystem over 16Tb (CentOS 5.5). I then reduced the lvm by the same amount, and attempted to create a new LV, but get this error message in the process lvcreate -v -ndata2 -L2T -t aoe Test mode: Metadata will NOT be updated. Setting logging type to disk Finding volume group "aoe" Test mode: Skipping archiving of volume group. Creating logical volume data2 Test mode: Skipping volume group backup. Found volume group "aoe" Aborting. Failed to activate new LV to wipe the start of it. Found volume group "aoe" Unable to deactivate failed new LV. Manual intervention required. Test mode: Wiping internal cache Wiping internal VG cache pvs PV VG Fmt Attr PSize PFree /dev/etherd/e2.0 aoe lvm2 a- 9.10T 7.10T /dev/etherd/e2.4 aoe lvm2 a- 13.65T 0 vgs VG #PV #LV #SN Attr VSize VFree aoe 2 1 0 wz--n- 22.74T 7.10T lvs LV VG Attr LSize Origin Snap% Move Log Copy% Convert data aoe -wi-ao 15.65T I've run a vgscan but this didn't help. So any ideas what step I've missed to enable me to create the new LV ? Thanks Phil.

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Re: [CentOS] Fwd: Re: Problem with yum
by James B. Byrne 21 Jul '10

21 Jul '10

On Mon, July 19, 2010 16:01, James Hogarth wrote: > Sent from Android mobile > > ---------- Forwarded message ---------- > From: "James Hogarth" <james.hogarth(a)gmail.com> > Date: 19 Jul 2010 21:00 > Subject: Re: [CentOS] Problem with yum > To: "CentOS mailing list" <centos(a)centos.org> > > With the kernel logging an out of memory error? My first instinct > would be > to check free to see the status of RAM and swap and perhaps end > unnecessary > processes.. What I ended up doing was rebooting the server and that seems to have cleared the problem. Trying yum clear all did not work as the yum process stalled as before. -- *** 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

2 1

nss_pam against centos-ds fails for non-root users
by Nicolai Stange 21 Jul '10

21 Jul '10

Hi all, I'm new to LDAP and want to use nss_ldap (version 253) against a centos directory server (version 8.1.0) running on the same host. The great mystery is, that as root everything works find, but as any other local user, it does not: root$ getent passwd [...] ldap:x:55:55:LDAP User:/var/lib/ldap:/bin/false ns:*:4000:4000:Nicolai Stange:/home/ns:/bin/bash root$ su some_local_user - some_local_user$ getent passwd [...] ldap:x:55:55:LDAP User:/var/lib/ldap:/bin/false some_local_user$ It just hangs for a while after printing the local user 'ldap' on the screen and then exits without displaying the ldap-user 'ns'. Instead /var/log/dirsrv/slapd-ldap/access the following lines appear: [20/Jul/2010:21:48:38 +0200] conn=14 fd=65 slot=65 SSL connection from 192.168.1.2 to 192.168.1.2. [20/Jul/2010:21:48:38 +0200] conn=14 op=-1 fd=65 closed - Encountered end of file. The only entries in my /etc/ldap.conf are those: tls_cacertfile /etc/nss/ca.example.org-cert.pem tls_cert /etc/nss/nss-cert.pem tls_key /etc/nss/nss-key.pem The nss-{key,cert}.pem may be used to bind at the following DN: dn: cn=nss,ou=Special Users,dc=example,dc=org objectClass: top objectClass: person cn: nss sn: nss Again: It works for user root! $ ls -l /etc/ldap.conf /etc/nss/ -rw-r--r-- 1 root root 9186 Jul 20 22:05 /etc/ldap.conf /etc/nss/: total 12 -rw------- 1 root root 1261 Jul 19 23:16 ca.example.org-cert.pem -rw------- 1 root root 1289 Jul 19 23:16 nss-cert.pem -r-------- 1 root root 1821 Jul 19 23:16 nss-key.pem $ Setting ownerships to world readable, e.g. $ ls -l /etc/ldap.conf /etc/nss/ -rw-r--r-- 1 root root 9186 Jul 20 22:05 /etc/ldap.conf /etc/nss/: total 12 -rw-r--r-- 1 root root 1261 Jul 19 23:16 ca.example.org-cert.pem -rw-r--r-- 1 root root 1289 Jul 19 23:16 nss-cert.pem -r--r--r-- 1 root root 1821 Jul 19 23:16 nss-key.pem $ doesn't change anything. Just for completeness the entry for the ldap-user 'ns': dn: uid=ns,ou=People,dc=example,dc=org objectClass: top objectClass: inetOrgPerson objectClass: posixAccount objectClass: organizationalPerson objectClass: person cn: Nicolai Stange displayName: Nicolai Stange sn: Stange givenName: Nicolai initials: NS uid: ns mail: nicolai.stange(a)example.org preferredLanguage: de, en;q=0.8 homeDirectory: /home/ns uidNumber: 4000 gidNumber: 4000 loginShell: /bin/bash userPassword: {SSHA}some_ssha_encrypted_pw I would really appreciate your help, I have no clue what the reason for this could be... Wishes Nicolai

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