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Re: [CentOS] Virtual Hosting
by Lanny Marcus 07 Sep '07

07 Sep '07

On 01 September 2007, William Warren <hescominsoon(a)emmanuelcomputerconsulting.com> wrote: > Message: 3 <snip> > you can also go with webmin to configure this stuff..<G> If you use Webmin, at this time, it is probably not a good idea to use SELinux with it. I have a very recent thread about this and there is a bug on Webmin. The SELinux folks are aware of it. Below is about SELinux. Lanny > This explanation and description of the problem are fine. We probably > need a custom policy for webmin to allow iptables to write to scripts > running as webmin, since catching stderr is important. There is no > file context that can be set to allow this. As I recall from the > original bug report, iptables was also trying to communicate with > another open file descriptor. This one I beleive should be closed on > exec.

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Help with External USB drive on RH/Centos 5
by Scott Ehrlich 07 Sep '07

07 Sep '07

Another issue to tackle - I have an external 1 TB drive (2 500GB on a RAID). When I plug it into the server, it sees, via /var/log/messages, that a USB device was plugged in, but that's it. fdisk -l doesn't see it. dmesg doesn't do much, either. It is a Western Digital My Book II device. I want to format it and use it for external storage, but can't until I get to it. What is the best way to get to the drive? Thanks. Scott

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RE: [CentOS] NIS binding probs w/Firewall and SELinux
by Plant, Dean 07 Sep '07

07 Sep '07

Scott Ehrlich wrote: > > Is there a file I can edit to ensure SELinux is disabled? The > system was initially installed with SELinux Enabled, then disabled > later by me. Are you aware of the commands getenforce & setenforce? Dean

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Problems in x86_64 Centos 5
by Erkki.Aalto＠Helsinki.FI 07 Sep '07

07 Sep '07

We upgraded a 64 bit server from Centos 4 to 5 and encountered some strange problems. Tcsh segfaulted irregurarily and emacs gave irregurarily strange error messages about regular expressions. Both problems disappeared when a 32-bit version was installed instead of the 64-bit. Ldconfig still occasionally segfaults. 64-bit servers where Centos 5 was installed from scratch have no problems. It is like there were some sort of remnant of the previous OS, but I can't figure out where. Strace of a 64-bit tcsh usually ends like this: open("/usr/lib/locale/locale-archive", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=55537056, ...}) = 0 mmap(NULL, 55537056, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2aaaaaae0000 close(3) = 0 brk(0) = 0x15b30000 brk(0x15b30800) = 0x15b30000 --- SIGSEGV (Segmentation fault) @ 0 (0) --- +++ killed by SIGSEGV +++ and ltrace gives: __libc_start_main(0x405180, 1, 0x7fff89087298, 0x440b30, 0x440b20 <unfinished ...> setlocale(5, "" <unfinished ...> sbrk(0) = 0x141f1000 sbrk(2048) = 0xffffffffffffffff --- SIGSEGV (Segmentation fault) --- +++ killed by SIGSEGV +++ Does anyone have any ideas? -- Erkki 'Örkki' Aalto "Life is divided up into Internet: Erkki.Aalto(a)Helsinki.FI the horrible and the miserable" Snail: P.O. Box 64 FI-00014 University of Helsinki, Finland

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unable to add IP address to eth0:0 eth0:1 etc
by Ray Leventhal 07 Sep '07

07 Sep '07

Hi all, I need to (quickly!grrr) update IP addresses for which a given machine will answer. I did this: /sbin/ifconfig eth0:0 xx.xx.xx.10 netmask 255.255.255.0 /sbin/ifconfig eth0:1 xx.xx.xx.11 netmask 255.255.255.0 /sbin/ifconfig eth0:2 xx.xx.xx.30 netmask 255.255.255.0 /sbin/ifconfig eth0:3 xx.xx.xx.31 netmask 255.255.255.0 /sbin/ifconfig eth0:4 xx.xx.xx.13 netmask 255.255.255.0 /sbin/ifconfig eth0:5 xx.xx.xx.15 netmask 255.255.255.0 /sbin/ifconfig eth0:6 xx.xx.xx.20 netmask 255.255.255.0 /sbin/ifconfig eth0:7 xx.xx.xx.21 netmask 255.255.255.0 /sbin/ifconfig eth0:8 xx.xx.xx.22 netmask 255.255.255.0 but on looking at the output of /sbin/ifconfig, I see this: [root@sunspot ray]# /sbin/ifconfig eth0 Link encap:Ethernet HWaddr 00:00:C5:C2:1B:01 inet addr:64.135.16.15 Bcast:64.135.16.255 Mask:255.255.255.0 inet6 addr: fe80::200:c5ff:fec2:1b01/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5491775 errors:0 dropped:0 overruns:0 frame:0 TX packets:962501 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:436018277 (415.8 MiB) TX bytes:156248463 (149.0 MiB) Interrupt:12 Base address:0xcf00 eth0:0 Link encap:Ethernet HWaddr 00:00:C5:C2:1B:01 inet addr:xx.xx.xx.10 Bcast:xx.xx.xx.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:12 Base address:0xcf00 eth0:1 Link encap:Ethernet HWaddr 00:00:C5:C2:1B:01 inet addr:xx.xx.xx.11 Bcast:xx.xx.xx.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:12 Base address:0xcf00 eth0:2 Link encap:Ethernet HWaddr 00:00:C5:C2:1B:01 inet addr:xx.xx.xx.30 Bcast:xx.xx.xx.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:12 Base address:0xcf00 eth0:3 Link encap:Ethernet HWaddr 00:00:C5:C2:1B:01 inet addr:xx.xx.xx.31 Bcast:xx.xx.xx.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:12 Base address:0xcf00 eth0:4 Link encap:Ethernet HWaddr 00:00:C5:C2:1B:01 inet addr:xx.xx.xx.13 Bcast:xx.xx.xx.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:12 Base address:0xcf00 eth0:5 Link encap:Ethernet HWaddr 00:00:C5:C2:1B:01 inet addr:xx.xx.xx.15 Bcast:xx.xx.xx.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:12 Base address:0xcf00 eth0:6 Link encap:Ethernet HWaddr 00:00:C5:C2:1B:01 inet addr:xx.xx.xx.20 Bcast:xx.xx.xx.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:12 Base address:0xcf00 eth0:7 Link encap:Ethernet HWaddr 00:00:C5:C2:1B:01 inet addr:xx.xx.xx.21 Bcast:xx.xx.xx.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:12 Base address:0xcf00 eth0:8 Link encap:Ethernet HWaddr 00:00:C5:C2:1B:01 inet addr:xx.xx.xx.22 Bcast:xx.xx.xx.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:12 Base address:0xcf00 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:5744 errors:0 dropped:0 overruns:0 frame:0 TX packets:5744 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:591811 (577.9 KiB) TX bytes:591811 (577.9 KiB) And this, in /var/log/messages [root@sunspot ray]# tail /var/log/messages Sep 7 06:50:31 sunspot avahi-daemon[2203]: Registering new address record for xx.xx.xx.15 on eth0. Sep 7 06:50:31 sunspot avahi-daemon[2203]: Registering new address record for xx.xx.xx.20 on eth0. Sep 7 06:50:31 sunspot avahi-daemon[2203]: Withdrawing address record for xx.xx.xx.20 on eth0. Sep 7 06:50:31 sunspot avahi-daemon[2203]: Registering new address record for xx.xx.xx.20 on eth0. Sep 7 06:50:31 sunspot avahi-daemon[2203]: Registering new address record for xx.xx.xx.21 on eth0. Sep 7 06:50:31 sunspot avahi-daemon[2203]: Withdrawing address record for xx.xx.xx.21 on eth0. Sep 7 06:50:31 sunspot avahi-daemon[2203]: Registering new address record for xx.xx.xx.21 on eth0. Sep 7 06:50:33 sunspot avahi-daemon[2203]: Registering new address record for xx.xx.xx.22 on eth0. Sep 7 06:50:33 sunspot avahi-daemon[2203]: Withdrawing address record for xx.xx.xx.22 on eth0. Sep 7 06:50:33 sunspot avahi-daemon[2203]: Registering new address record for xx.xx.xx.22 on eth0. How can I get my NIC to accept traffic for these IPs? Thanks In Advance, ~Ray

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HP DL140 Help Required
by umair shakil 07 Sep '07

07 Sep '07

Dear All, Salam!!! Well i am using CentOS release 4.3 (Final). From the start i installed the CentOs plus kernal; CentOS (2.6.9-42.0.8.plus.c4smp) I was facing the problem, that is system poweroffs, as this was happening randomly, but always found this problem in the night or even early morning. Also i assure you that system and all applications work normally in the office timings as i use to work on the machine and no problem can be seen, problem always occured in the night or in morning means after office timings. I checked; less /var/log/dmesg it says BIOS Corrupt. ACPI-0584: *** Warning: Type override - [DEB_] had invalid type (Integer) for Scope operator, changed to (Scope) I changed the kernel to; 2.6.9-34.ELsmp Well, system poweroffs too yesterday night, but this time no BIOS error in "dmesg" and second warning was there still; ACPI-0584: *** Warning: Type override - [DEB_] had invalid type (Integer) for Scope operator, changed to (Scope) I am not able to figure out the problem, if any one can help me???? Regards, Umair Shakil Askari Bank Limited

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Restrict User on Sending Mail
by Jun Salen 07 Sep '07

07 Sep '07

I search from google on how to restrict user from sending mail and I did trial and errors for three days already but to no success. What I want to do is to restrict some user in sending mail while some unrestricted user will send mail to internet and intranet. I am able to restrict outside address (i.e. gmail, yahoo) to not send mail on restricted users but the vice versa I can not do. Is there anybody here that have experience in doing so. Please help. By the way, I am using Postfix on top of CentOS 4.5. Below are some of the entries in main.cf: smtpd_recipient_restrictions = check_recipient_access hash:/etc/postfix/access, reject_invalid_hostname, reject_unknown_recipient_domain, reject_unauth_pipelining, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination smtpd_client_restrictions = check_client_access hash:/etc/postfix/restricted_sender #smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/restricted_sender /etc/postfix/restricted_sender contains: testuser1(a)mydomain.com REJECT I already try to use smtpd_client_restrictions and smtpd_sender_restrictions with no success, is there any other way to do it. Thanks. junji aisalen.wordpress.com Linux Registered User #253162 Send instant messages to your online friends http://uk.messenger.yahoo.com

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CentOS-announce Digest, Vol 31, Issue 4
by centos-announce-request＠centos.org 07 Sep '07

07 Sep '07

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. CESA-2007:0873 Moderate CentOS 4 x86_64 star - security update (Johnny Hughes) 2. CESA-2007:0873 Moderate CentOS 4 i386 star - security update (Johnny Hughes) 3. CESA-2007:0795 Moderate CentOS 4 x86_64 cyrus-sasl - security update (Johnny Hughes) 4. CESA-2007:0795 Moderate CentOS 4 i386 cyrus-sasl - security update (Johnny Hughes) 5. CESA-2007:0774 Moderate CentOS 4 x86_64 kernel - security update (Johnny Hughes) 6. CESA-2007:0774 Moderate CentOS 4 i386 kernel - security update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Fri, 07 Sep 2007 03:20:32 -0500 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2007:0873 Moderate CentOS 4 x86_64 star - security update To: CentOS-Announce <centos-announce(a)centos.org> Message-ID: <46E109D0.8010909(a)centos.org> Content-Type: text/plain; charset="iso-8859-1" CentOS Errata and Security Advisory 2007:0873 https://rhn.redhat.com/errata/RHSA-2007-0873.html The following updated files have been uploaded and are currently syncing to the mirrors: x86_64: star-1.5a25-8.x86_64.rpm src: star-1.5a25-8.src.rpm

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NIS binding probs w/Firewall and SELinux
by Scott Ehrlich 07 Sep '07

07 Sep '07

I have RHEL5 Server originally configured and installed by me with Firewall enabled, but passing through NFS, Samba, and SSH. I then disabled SELinux. As you all likely recall, I had configured a test environment to get samba and nfs/nis up and running. I got it going, and recently brought it to a production server. After modifying the files on the production server and rebooting, I'm getting the long pause of the server trying to bind to my yp domain, then failing. When I finally was able to log in, SELinux warned me that I could get past the ypbind problem by issuing a command, which I did. I then restarted ypbind, and got a delay/timeout again. I'll check the log files tomorrow for any further hints. Is there a file I can edit to ensure SELinux is disabled? The system was initially installed with SELinux Enabled, then disabled later by me. In the meantime, I did find http://www.redhat.com/docs/manuals/linux/RHL-9-Manual/security-guide/s1-ser… and will see if that may help. I think once I get past beyond the security issues, yp will work/bind fine. Thanks for any help/insights. Scott

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VNC reporting -> logs -> logwatch
by Michael Velez 07 Sep '07

07 Sep '07

Hello all, Does anybody know how to get the vncserver to report connections so I can receive it via the daily logwatch e-mail? Thanks, Michael

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