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RE: [CentOS] gcc editor for newbie (Emacs or vim or ?)
by Bowie Bailey 12 Aug '08

12 Aug '08

Lanny Marcus wrote: > > Thank you! gvim is slick. As you wrote, it has lots of help > and it will be easy to learn how to use vi, by learning on gvim. > Better than holding a cheat sheet or having a book open, trying > to figure out what to do, when learning. There is a nice vi cheatsheet available here: http://downloads.techrepublic.com.com/abstract.aspx?docid=172404 The help in gvim is nice, but a good cheatsheet is more convenient when you are just looking for a simple command. -- Bowie

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SCO 7.1 on full virtualization mode
by lingu 12 Aug '08

12 Aug '08

Hi, I am trying to install SCO 7.1 on Centos 5.2 in full virtualization mode.But the installation requires booting from a floppy drive provide in the SCO CD. I tried different ways to attach floppy drive to the guest.I even tried providing floppy image as a drive to the guest but guest is not booting from floppy. It will be more helpful if any one help me to get this installed . Regards, lingu

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CentOS-announce Digest, Vol 42, Issue 3
by centos-announce-request＠centos.org 12 Aug '08

12 Aug '08

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-2008:0824 CentOS 5 i386 strace Update (Karanbir Singh) 2. CEBA-2008:0824 CentOS 5 x86_64 strace Update (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Mon, 11 Aug 2008 01:35:53 +0100 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2008:0824 CentOS 5 i386 strace Update To: centos-announce(a)centos.org Message-ID: <20080811003553.GA29803(a)base.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2008:0824 Upstream details at : https://rhn.redhat.com/errata/RHBA-2008-0824.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: dba0f8d0a2aca6aca15bd81d63a0b295 strace-4.5.16-1.el5_2.2.i386.rpm Source: 4f46275678d5a11a8d8ceacd3d9c241a strace-4.5.16-1.el5_2.2.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Mon, 11 Aug 2008 01:35:53 +0100 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2008:0824 CentOS 5 x86_64 strace Update To: centos-announce(a)centos.org Message-ID: <20080811003553.GA29819(a)base.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2008:0824 Upstream details at : https://rhn.redhat.com/errata/RHBA-2008-0824.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: 288c7979157a76555734c4dd532803cf strace-4.5.16-1.el5_2.2.x86_64.rpm Source: 4f46275678d5a11a8d8ceacd3d9c241a strace-4.5.16-1.el5_2.2.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 42, Issue 3 **********************************************

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Sendmail with TLS, permission problem
by Jussi Hirvi 12 Aug '08

12 Aug '08

Hello, list, I have a problem with Sendmail configuration. I'm building (on CentOS 5) a "dual-MTA" setup with amavisd-new (as specified in amavisd-new documentation, file README.sendmail-dual). So far so good. But when I tried to add server SMTP-AUTH and TLS, I get a strange, permission-related error, and STARTTLS will not start. In my .mc conf, the Sendmail user is now the usual - mail:mail define(`confDEF_USER_ID', ``8:12'')dnl ...though when I have cleared this problem, I'm going to add a definition for a non-privileged Sendmail user like this (for the receiving Sendmail daemon): define(`confRUN_AS_USER', `smmsp:smmsp')dnl Ok, when I try to start Sendmail, I get this in the maillog: Aug 11 15:25:24 mail sm-mta-tx[12782]: starting daemon (8.13.8): SMTP+queueing@00:01:00 Aug 11 15:25:24 mail sm-mta-rx[12785]: starting daemon (8.13.8): SMTP+persistent-queueing@00:00:01 Aug 11 15:25:24 mail sm-mta-rx[12785]: STARTTLS=server: file /etc/mail/certs/sendmail.pem unsafe: Permission denied This is strange, because the permissions should be ok - right? [root@mail ~]# ls -ld / /etc /etc/mail /etc/mail/certs drwxr-xr-x 24 root root 4096 Mar 29 2007 / drwxr-xr-x 96 root root 12288 Aug 12 04:02 /etc drwxr-xr-x 5 root root 4096 Aug 11 15:44 /etc/mail dr-xr-xr-x 2 mail mail 4096 Aug 11 14:42 /etc/mail/certs [root@mail ~]# ls -l /etc/mail/certs -rw------- 1 mail mail 1371 Aug 11 12:15 cacert.pem -rw------- 1 mail mail 963 Aug 11 12:15 cakey.pem -rw-r--r-- 1 root root 1952422 Aug 11 14:26 revoke.crl -rw------- 1 mail mail 2258 Aug 11 12:16 sendmail.pem Any ideas, what I should check next? This might be a Sendmail bug - it resembles this Debian bug, which also gives a "unsafe - no permission" error as a symptom. http://www.mail-archive.com/debian-bugs-closed@lists.debian.org/msg01560.htm l . Jussi Hirvi -- Jussi Hirvi * Green Spot Topeliuksenkatu 15 C * 00250 Helsinki * Finland Tel. & fax +358 9 493 981 * Mobile +358 40 771 2098 (only sms) jussi.hirvi(a)greenspot.fi * http://www.greenspot.fi

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ext2online / ext2resize
by Al Sparks 11 Aug '08

11 Aug '08

I'm running CentOS 5.2 x x86_64. I did an lvextend of a logical volume, and proceeded to run one of the ext2 utilities (e.g. ext2online, ext2resize) and found to my surprise that it wasn't on there. So I started googling around, and as far as I can see, though I'm not sure, they're supposed to be a part of the e2fsprogs package. Well, it's installed on the system, at least the x86_64 version is. Should I be downloading the i386 version of that package? If I do, will I be stomping on the x86_64 tools? Is there another package I should be looking at? BTW, I tried loading the source, and compiling, ./configure and make fails. === Al

3 3

Need to restart ypserv to update the nis maps
by Theo Band 11 Aug '08

11 Aug '08

Hi I use NIS om my network (CentOS4.6). When an update on a map occurs (home directory changed in /etc/passwd for instance), I run make -C /var/yp/ and check the result on a client. On the client I use "ypcat passwd" and find indeed that the update has propagated (the clients run ypbind service). On the client I have configured /etc/nsswitch.conf with : passwd: files nis shadow: files nis group: files nis The problem is however that on the client, if I try to use the new data, it still uses the old one. For instance "cd ~john" still directs me to the old path instead of to the updated path (as correctly reported by "ypcat passwd"). To solve it I need to restart the ypserv service on the nis server for every change. Does anyone now what could be the problem or where I should look? Apparently the OS gets password and user info using another way than the ypcat tool. (ypserv-2.13-18,ypbind-1.17.2-13) Thanks, Theo

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centos 5.2 / sun java ?
by Stephan van Hienen 11 Aug '08

11 Aug '08

Starting with rhel 5.2, Redhat provides sun java in the Supplementary channel. Are there any plans to release sun-java in the centos extra or plus repo ? Would be nice to keep sun java up to date using yum. Thnx, Stephan

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Question about Open SSH Public Keys
by Clint Dilks 11 Aug '08

11 Aug '08

Hi People I am setting up some systems with ssh public keys and as part of this I am using the from directive inside .ssh/authorized_keys. Currently I am using the IP address to control the source. eg from="10.0.0.1" but on one CentOS 4 System that is up to date this will only work if I replace the IP with the DNS name of the server. I have verified that DNS is resolving the DNS Name to the correct IP address on the server in question and all seems to be fine. Aside from this CentOS Box have only been able to test this out on some old FC6 Machines and they behave as I expected. Anyone got any ideas why this might be happening ? I have compared the sshd config between the FC6 Machines and the CentOS Box and can't spot anything that would explain the issue. Thanks for any ideas, and have a nice day :)

3 3

rebuilding the kernel.
by Yahia Tachwali 11 Aug '08

11 Aug '08

Hello folks, I am trying to add HDLC module support in the menuconfig. However, I am facing difficulties in rebuilding the kernel and modules. My main objective is to get the HDLC supported in kernel 2.6.9. I have a CentOS 4.4 with kernel 2.6.9.42. I need help in finding the best way to add the HDLC support whether through getting an RPM package for it or refering me to the right procedure in rebuilding the kernel. Thank you very much in advance for your help.

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Help: Server security compromised?
by Noob Centos Admin 10 Aug '08

10 Aug '08

Hi, Need some help about this as it's gotten me really concerned. I'm probably reading too much into this but for about two weeks now my daily log has increased by almost 10 times. After running through a couple of days of logs with a script, it seems that I'm getting flooded on SMTP from this IP 219.64.114.52 which belongs to VSNL and appears to be statically assigned IP (219.64.114.52.chn.bb-static.vsnl.net) This IP address is apparently listed in the spamhous.org Policy Block List, eXploit Block List and Composite Block List, which basically indicates it's either an open proxy or a hijacked system. I'm not sure what it's trying to do, but for exactly 10 hours a day which correspond to India 9:30am or so until 7pm or so, I will get massive amounts of SMTP connections from this host. It will attempt to masquerade as domains on my server while trying to send to non-existent accounts on these domains. 2008-08-06 13:32:58 H=(****.com) [219.64.114.52] F=<lnyz(a)hush.com> rejected RCPT <484f6f23.8020304(a)****.com>: 2008-08-06 13:32:58 H=(****.com) [219.64.114.52] incomplete transaction (connection lost) from <djclg(a)hotmail.com> 2008-08-06 13:32:58 unexpected disconnection while reading SMTP command from (****.com) [219.64.114.52] 2008-08-06 13:32:58 H=(****.com) [219.64.114.52] F=<48720243.8060909(a)****.com> rejected RCPT <285.8030501(a)****.com>: 2008-08-06 13:32:58 H=(****.com) [219.64.114.52] incomplete transaction (connection lost) from <lnyz(a)hush.com> 2008-08-06 13:32:58 unexpected disconnection while reading SMTP command from (****.com) [219.64.114.52] At this point, I thought it was just a case of a dedicated spamming, until I decided I had enough of multi-megabytes daily logs flooding my mailbox, plus the fact it was probably contributing to an increase server load in the past weeks as the mail daemon had to handle the connections. So I thought I could just block the IP using iptables. I had a bad experience locking myself out by accident after editing the iptables file so for this time I decided to test from command line first using instructions from the Internet like this /sbin/iptables -A RH-Firewall-1-INPUT -s 219.64.114.52 -j DROP and I got an error that chain/command /sbin/iptables -L produces "blank" output [root@myserver confused]# /sbin/iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination which was of course a shock to me, since that seems to say that my server firewall is basically non-existent. I did a /sbin/service iptables restart and iptables -L produced the expected output showing all the rules on file. I could then add the new rule from command line without any messages. Minutes later, my tail -f on the exim log started spewing the smtp messages AGAIN. iptables -L again shows NO RULES Everytime I restart, iptables, for a short while, the rules are there. But minutes later, it's wiped. So I'm very concerned that the server had been compromised and something is wiping my iptables. Or am I just badly mistaken about the way iptables -L is supposed to work? If not, what should I do next to find and eliminate this problem? Thanks in advance for any advice!

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