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FreeNx doesn't work?
by gaohu 13 Oct '10

13 Oct '10

I have installed freenx with this article http://wiki.centos.org/HowTos/FreeNX but when I use freenx-client on windows to connect to server, I always get an "freenx Authentication failed." client err log output as this: NX> 203 NXSSH running with pid: 1584 NX> 285 Enabling check on switch command NX> 285 Enabling skip of SSH config files NX> 285 Setting the preferred NX options NX> 200 Connected to address: 192.168.253.5 on port: 22 NX> 202 Authenticating user: nx NX> 208 Using auth method: publickey NX> 204 Authentication failed. My sshd configed as use rsa key, and ssh soft like xshell can work well. nxsetup output as this: Pleas care the following red commented two line. I just think this is the point. But why , and what shoud I do to solver ? [root@tigertall ~]# nxsetup --test ----> Testing your nxserver configuration ... Warning: Could not find nxdesktop in /usr/bin. RDP sessions won't work. Warning: Could not find nxviewer in /usr/bin. VNC sessions won't work. Warning: Invalid value "APPLICATION_LIBRARY_PRELOAD=/usr/lib/libX11.so.6.2:/usr/lib/libXext.so.6.4:/usr/lib/libXcomp.so.2:/usr/lib/libXcompext.so:/usr/lib/libXrender.so.1.2". /usr/lib/libX11.so.6.2 could not be found. Users will not be able to run a single application in non-rootless mode. Warning: Invalid value "DEFAULT_X_SESSION=/etc/X11/xdm/Xsession" Users might not be able to request a default X session. Warning: Invalid value "COMMAND_START_CDE=cdwm" Users will not be able to request a CDE session. Warning: Invalid value "COMMAND_SMBMOUNT=smbmount". You'll not be able to use SAMBA. Warning: Invalid value "COMMAND_SMBUMOUNT=smbumount". You'll not be able to use SAMBA. Error: Could not find 1.5.0 or 2.[01].0 or 3.[01].0 version string in nxagent. NX 1.5.0 or 2.[01].0 or 3.[012].0 backend is needed for this version of FreeNX. Warnings occured during config check. To enable these features please correct the configuration file. <---- done ----> Testing your nxserver connection ... Permission denied (publickey,gssapi-with-mic). Fatal error: Could not connect to NX Server. Please check your ssh setup: The following are _examples_ of what you might need to check. - Make sure "nx" is one of the AllowUsers in sshd_config. (or that the line is outcommented/not there) - Make sure "nx" is one of the AllowGroups in sshd_config. (or that the line is outcommented/not there) - Make sure your sshd allows public key authentication. - Make sure your sshd is really running on port 22. - Make sure your sshd_config AuthorizedKeysFile in sshd_config is set to authorized_keys2. (this should be a filename not a pathname+filename) - Make sure you allow ssh on localhost, this could come from some restriction of: -the tcp wrapper. Then add in /etc/hosts.allow: ALL:localhost -the iptables. add to it: $ iptables -A INPUT -i lo -j ACCEPT $ iptables -A OUTPUT -o lo -j ACCEPT [root@tigertall ~]# Thanks you! 2010-08-15 gaohu

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CentOS-announce Digest, Vol 68, Issue 7
by centos-announce-request＠centos.org 13 Oct '10

13 Oct '10

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. CEBA-2010:0759 CentOS 5 x86_64 module-init-tools Update (Karanbir Singh) 2. CEBA-2010:0759 CentOS 5 i386 module-init-tools Update (Karanbir Singh) 3. CEBA-2010:0747 CentOS 5 x86_64 system-config-cluster Update (Karanbir Singh) 4. CEBA-2010:0747 CentOS 5 i386 system-config-cluster Update (Karanbir Singh) 5. CEBA-2010:0764 CentOS 5 x86_64 libxml2 Update (Karanbir Singh) 6. CEBA-2010:0764 CentOS 5 i386 libxml2 Update (Karanbir Singh) 7. CEBA-2010:0763 CentOS 5 x86_64 python-virtinst Update (Karanbir Singh) 8. CEBA-2010:0763 CentOS 5 i386 python-virtinst Update (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Mon, 11 Oct 2010 21:00:12 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2010:0759 CentOS 5 x86_64 module-init-tools Update To: centos-announce(a)centos.org Message-ID: <20101011210012.GA1784(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2010:0759 Upstream details at : https://rhn.redhat.com/errata/RHBA-2010-0759.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: f6896639f48646f14e5dba21573764a3 module-init-tools-3.3-0.pre3.1.60.el5_5.1.x86_64.rpm Source: 873cdd02e8616c916a839e3bf4e6b733 module-init-tools-3.3-0.pre3.1.60.el5_5.1.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Mon, 11 Oct 2010 21:00:11 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2010:0759 CentOS 5 i386 module-init-tools Update To: centos-announce(a)centos.org Message-ID: <20101011210011.GA1771(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2010:0759 Upstream details at : https://rhn.redhat.com/errata/RHBA-2010-0759.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: 1b182d46e08fb5fb9e7aa54cb4dfa4f0 module-init-tools-3.3-0.pre3.1.60.el5_5.1.i386.rpm Source: 873cdd02e8616c916a839e3bf4e6b733 module-init-tools-3.3-0.pre3.1.60.el5_5.1.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Mon, 11 Oct 2010 21:41:49 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2010:0747 CentOS 5 x86_64 system-config-cluster Update To: centos-announce(a)centos.org Message-ID: <20101011214149.GA2279(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2010:0747 Upstream details at : https://rhn.redhat.com/errata/RHBA-2010-0747.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: d3eed53f9326c888bfb231a0e92b6b3d system-config-cluster-1.0.57-3.el5_5.1.noarch.rpm Source: 7e7f2af329a4804978305662163f28e0 system-config-cluster-1.0.57-3.el5_5.1.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 4 Date: Mon, 11 Oct 2010 21:41:49 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2010:0747 CentOS 5 i386 system-config-cluster Update To: centos-announce(a)centos.org Message-ID: <20101011214149.GA2265(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2010:0747 Upstream details at : https://rhn.redhat.com/errata/RHBA-2010-0747.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: 93c11448886960214f38866f8d5cccb9 system-config-cluster-1.0.57-3.el5_5.1.noarch.rpm Source: 7e7f2af329a4804978305662163f28e0 system-config-cluster-1.0.57-3.el5_5.1.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 5 Date: Tue, 12 Oct 2010 15:18:57 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2010:0764 CentOS 5 x86_64 libxml2 Update To: centos-announce(a)centos.org Message-ID: <20101012151857.GA9559(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2010:0764 Upstream details at : https://rhn.redhat.com/errata/RHBA-2010-0764.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: 3d639ec34aaa81e98df4e20b10d04c70 libxml2-2.6.26-2.1.2.8.el5_5.1.i386.rpm 2eaaaf9362f6b073a343eacfd217a358 libxml2-2.6.26-2.1.2.8.el5_5.1.x86_64.rpm b303bc20b6039077b0bfa49e686defc5 libxml2-devel-2.6.26-2.1.2.8.el5_5.1.i386.rpm d7b801fea06438b617f662c28841ef22 libxml2-devel-2.6.26-2.1.2.8.el5_5.1.x86_64.rpm d7a451cc389b42085931e62b2f131e69 libxml2-python-2.6.26-2.1.2.8.el5_5.1.x86_64.rpm Source: a8a0414a7785934bbf9825e5cbb395be libxml2-2.6.26-2.1.2.8.el5_5.1.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 6 Date: Tue, 12 Oct 2010 15:18:57 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2010:0764 CentOS 5 i386 libxml2 Update To: centos-announce(a)centos.org Message-ID: <20101012151857.GA9544(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2010:0764 Upstream details at : https://rhn.redhat.com/errata/RHBA-2010-0764.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: 0d870af2ae781786f1c3c5b6e1ce5608 libxml2-2.6.26-2.1.2.8.el5_5.1.i386.rpm 6039f4d3130d30fb559a987799618a66 libxml2-devel-2.6.26-2.1.2.8.el5_5.1.i386.rpm 0cd73c4f30ea0056acf2c095b3c33307 libxml2-python-2.6.26-2.1.2.8.el5_5.1.i386.rpm Source: a8a0414a7785934bbf9825e5cbb395be libxml2-2.6.26-2.1.2.8.el5_5.1.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 7 Date: Tue, 12 Oct 2010 15:24:15 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2010:0763 CentOS 5 x86_64 python-virtinst Update To: centos-announce(a)centos.org Message-ID: <20101012152415.GA9697(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2010:0763 Upstream details at : https://rhn.redhat.com/errata/RHBA-2010-0763.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: cf9e954d25c173ea02d3af642893ab03 python-virtinst-0.400.3-9.el5_5.1.noarch.rpm Source: a07727860297efb5bed94816ba61885b python-virtinst-0.400.3-9.el5_5.1.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 8 Date: Tue, 12 Oct 2010 15:24:15 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2010:0763 CentOS 5 i386 python-virtinst Update To: centos-announce(a)centos.org Message-ID: <20101012152415.GA9683(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2010:0763 Upstream details at : https://rhn.redhat.com/errata/RHBA-2010-0763.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: d751ffbd726273151bfce2c4f7d415eb python-virtinst-0.400.3-9.el5_5.1.noarch.rpm Source: a07727860297efb5bed94816ba61885b python-virtinst-0.400.3-9.el5_5.1.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 68, Issue 7 **********************************************

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SOLVED - wrong subject : kvm-kmod CentOS 5.5 - sorry
by Ken Dechick 13 Oct '10

13 Oct '10

Kenneth M DeChick Linux Systems Administrator Community Computer Service, Inc. http://www.medent.com kend(a)medent.com Registered Linux User #497318 -- -- -- -- -- -- -- -- -- -- -- Schshschshchsch.-- The Gorn, "Arena", stardate 3046.2 . This message and any attachments may contain information that is protected by law as privileged and confidential, and is transmitted for the sole use of the intended recipient(s). If you are not the intended recipient, you are hereby notified that any use, dissemination, copying or retention of this e-mail or the information contained herein is strictly prohibited. If you received this e-mail in error, please immediately notify the sender by e-mail, and permanently delete this e-mail.

1 0

SOLVED -
by Ken Dechick 13 Oct '10

13 Oct '10

Hi Akemi, Thanks for the reply. >Do you mean no src.rpm of your custom kernel? If so, rpmbuild -bs will build >it. The only source rpm I can find is from the CentOS Extras. FIlename makes it appear that you need the 2.6.18-8.1.8 kernel from CentOS Extras: kvm-kmod-36-1.2.6.18_8.1.8.el5.src.rpm If I try to rebuild that with: rpmbuild --rebuild --target=x86_64 kvm-kmod-36-1.2.6.18_8.1.8.el5.src.rpm I get error that I need the 2.6.18-8 kernel-devel package, if I install that it will build but it results in a kernel module built for the 2.6.18-8 series but I need for my 2.6.18-194 series. So on your advice I jumped into my SPECS dir and tried: rpmbuild -bs --target=x86_64 kvm-kmod.spec and it gave me: Wrote: ~/kend/rpmbuild/SRPMS/kvm-kmod-36-1.2.6.18_194.11.4.el5.1.x64.src.rpm I guess it all comes down to experience. Being not to familiar with rpmbuild I did not know you could do that. Thanks for the tip! >kmod-kvm is built from kvm and it is kernel version independent, >kABI-tracking. This means that, if your custom kernel is kABI >compatible with the distro kernel, the kvm module will continue to >work. I wish that was better documented. So as long as I have kABI checking enabled when I build my custom I should be golden? I apparently did not fully understand kABI either than. I did have some trouble with kABI at first and disabling it solved the issue, not sure if it's still disabled, but I will check. Thanks for the info! I wont call this thread solved until I get the chance to try these two options out and see where I get. Sounds like sticking with using kABI is my best bet either way if case I run into this again in the future with other things. Getting into the visualization world for the first time so I have a learning curve to clime here. Thank you for the tips, I will do some testing then post the results. -KenD Kenneth M DeChick Linux Systems Administrator Community Computer Service, Inc. http://www.medent.com kend(a)medent.com Registered Linux User #497318 -- -- -- -- -- -- -- -- -- -- -- Schshschshchsch.-- The Gorn, "Arena", stardate 3046.2 . This message and any attachments may contain information that is protected by law as privileged and confidential, and is transmitted for the sole use of the intended recipient(s). If you are not the intended recipient, you are hereby notified that any use, dissemination, copying or retention of this e-mail or the information contained herein is strictly prohibited. If you received this e-mail in error, please immediately notify the sender by e-mail, and permanently delete this e-mail.

1 0

One server not showing SSH port, the other is.
by Dotan Cohen 13 Oct '10

13 Oct '10

I have two CentOS servers running SSH on two different non-standard ports. So far as I can tell, they have identical /etc/ssh/sshd_config files with the exception of the different port (both are 22xx). However, when running nmap on them, one betrays the port that SSH is running on, and the other does not. I have shut down iptables on both machines and the behaviour remains this way. What could be the cause? Specifically, how can I hide the port that SSH is running on? I'm sorry that I cannot provide the IP addresses, the owner of the servers doesn't want that! I also know how silly it is to do "stealth" ports but I'm not the one making the decision! Thanks! -- Dotan Cohen http://gibberish.co.il http://what-is-what.com

8 7

mtrr error
by Shouben Zhou 13 Oct '10

13 Oct '10

I need your help and DEL's tech support doesn't provide any help on this one. We have a lot of different type of DELL desktops from old-type hyper-thread cpu, to dual-core and quad-core cpus (most are Xeons). We run all versions of CentOS, but most are latest 5.5 (also up-to-date) and are very happy about that. The primary software on those Linux systems is IDL, which uses OpenGL libraries usually comes with video drivers. Now we are having problem with DELL T3500 with six-core cpu (6 GB memory). This is the only T3500 and six-core cpu we have right now. Here is the fact: 1. on T3500 with six-core, CentOS5.5, video card ATI Profire 2260, IDL 7.1. Using dmesg, it report mtrr: type mismatch for e0000000,10000000 old: uncachable new: >>>>>>>>>> write-combining >>>>>>>>>> mtrr: type mismatch for e0000000,10000000 old: uncachable new: >>>>>>>>>> write-combining when run IDL with simple draw function, got segmentation fault /proc/mtrr: reg00: base=0xdff00000 (3583MB), size= 1MB: uncachable, count=1 reg01: base=0xe0000000 (3584MB), size= 512MB: uncachable, count=1 Then I switched another ATI RV370, the mtrr error is gone, but still got segmentation fault But 2. on T3400 with dual-core, CentOS5.5, same ATI RV370 video card and IDL 7.1, everything works just fine. By the way, we have never had any such problem with all our DELL boxes using CentOS and IDL on T3400, the /proc/mtrr: reg00: base=0x00000000 ( 0MB), size=65536MB: write-back, count=1 reg01: base=0x3ff00000 (1023MB), size= 1MB: uncachable, count=1 reg02: base=0x40000000 (1024MB), size=1024MB: uncachable, count=1 reg03: base=0x80000000 (2048MB), size=2048MB: uncachable, count=1 When googling, someone out there suggest manually configure the MTRR, can somebody help us how to configure this six-core's MTRR? I am guessing this must be MTRR related. Is it possible the current Linux kernel doesn't understand six-core very well? Thanks -- -- Shouben Zhou Science Systems and Applications Inc.(SSAI) 1 Enterprise Pkwy, Hampton, VA 23666 Tel: (757)951-1905 Fax: (757)951-1900 Email: Shouben.Zhou(a)nasa.gov

1 0

SquashFS: how good is it?
by Boris Epstein 13 Oct '10

13 Oct '10

Hello listmates, Have any of you used SquashFS? See: http://en.wikipedia.org/wiki/SquashFS We have tried it on small file sets, seems good but if you have experience using it, especially to store/archive lage volumes of files, please share your experience. Thanks. Boris.

4 8

security updates
by Ritika Garg 12 Oct '10

12 Oct '10

I can't understand exactly what these security updates do? Why is there a need to have a security update?

12 11

using Linux as a front-end controller for a SAN?
by Rudi Ahlers 12 Oct '10

12 Oct '10

Hi all, I hope someone can shed some light on this for me. Has anyone tried, or have experience with, setting up a Linux server to manage a few NAS devices and thus make them all visible to the clients as one large SAN? Basically, I'm thinking it would be a good idea to combine the current NAS's we have into one large system (typically a SAN?) and then let the clients all connect to one server (for authentication, LUN control, etc), but then when they need to access their drives / devices / LUN's, they get redirected to the specific server directly. I'm also thinking it could be a good way to say some IP addresses, i.e. instead of giving each NAS a public IP, they could all have private IP's and then everyone just connects to the public IP if needed. The servers which will access the NAS's will be on the same physical LAN and will also be on the same private IP subnet to make it easier. Does anyone know what I'm talking about? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

5 6

SELinux policy for dkim-milter
by Ben McGinnes 12 Oct '10

12 Oct '10

Hello, Does anyone have a sample SELinux policy for dkim-milter? I'm using the configuration from this page: http://www.howtoforge.com/set-up-dkim-for-multiple-domains-on-postfix-with-… Along with the latest RPM from the link on that page. Regards, Ben -- Ben McGinnes http://www.adversary.org/ Twitter: benmcginnes Systems Administrator, Writer, ICT Consultant Encrypted email preferred - primary OpenPGP/GPG key: 0xA04AE313 http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x371AC5BFA04AE313

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