- Discuss - lists.centos.org

allowing users to issue the "shutdown" command
by Buz Davis 19 Oct '09

19 Oct '09

I am running CentOS 5.3 and have just the two accounts "root" and "buz". I would like to be able to issue "shutdown" from the account "buz", and thus created /etc/shutdown.allow with the single entry "buz" (without any quotes). I still get the error message "only root can do this" (or something similar) even if I include the '-a' option on the shutdown command. What am I missing ?

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Confusion about scheduling tasks with crontab
by Niki Kovacs 19 Oct '09

19 Oct '09

Hi, I have to setup a scheduled task on a server, and I just read through some crontab docs. Now I'm confused. It's not so much the syntax of the cron job to define (I got that), it's more... how do I get to define it? Use a text editor (vi or the likes) to edit /etc/crontab directly? Or create some empty file in /etc/cron.daily or /etc/cron.hourly or the likes and then edit it using crontab -e ? Anyway, here's what I'd like to do. I have a script: /root/scripts/backup.sh I want to run that script every day at 07:00 in the morning. Once. Now how would I go about that? The thing is: I'd like to know an orthodox way to go about this. You can be laconic in your answers, I'll retrive the details in the docs. Cheers, Niki

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iptables - Forwarding with port translation thru an OpenVPN tunnel
by Chuck Munro 19 Oct '09

19 Oct '09

Perhaps someone with a sharper brain than I can solve this little mystery. I've Googled until I'm blue in the face, read all TFM's I can find, and tried several iptables rule combinations but just can't get the following to work. Here's my challenge: I have a CentOS-5.3 "main" server with a static public IP address running Apache, OpenVPN, and a bunch of other services. The primary IP address for the only NIC in this box is used by Apache on standard ports 80 and 443. I have a secondary static public IP address assigned to this same NIC as eth0:1 I have a working OpenVPN tunnel going to another CentOS-5.3 server which has Apache listening on its eth0 NIC for requests on non-standard ports 29080 and 29443(don't ask!). This server is accessible on its static public IP address and thru OpenVPN tunnel from the main server. The main server is the OpenVPN server as well, with private IP address 172.16.xxx.1/32 auto-assigned to it. The second server is a VPN client with IP address 172.16.xxx.yyy/32 assigned. The narrow netmasks are the OpenVPN default, presumably used for isolation among multiple clients. OpenVPN is configured to run over the main server's NIC via its eth0:1 secondary IP address 64.aaa.bbb.ccc The main server has a static route set up between its eth0:1 IP and the remote server's public IP address (not the tunnel IP). This route is only there so that during initial VPN negotiations the data will move via eth0:1's IP address. Things like ping, SSH, scp and HTTP/HTTPS all work correctly thru the VPN in both directions, so the VPN itself is solid. Ok, so now I want external HTTP/HTTPS requests made to the main server's eth0:1 public IP address to be forwarded thru the VPN to the second remote server, with port translation along the way. Here is what I want to happen: Outside world HTTP/HTTPS requests to eth0:1 ports 80/443 | V CentOS eth0:1 (64.aaa.bbb.ccc) | V Translate to ports 29080/29443 | V Forward requests thru the tunnel to 172.16.xxx.yyy | V Remote Apache responds, packets return thru VPN to "main" | V Response goes back to the outside world via 64.aaa.bbb.ccc HTTP/HTTPS requests to the 64.aaa.bbb.ccc public IP just hang and time out. Direct requests to the remote server on the non-standard ports work fine. I've tried lots of iptables example entries found on several forums but so far none of them seem to work. Does anyone have a cookbook-like complete set of iptables rules that will accomplish what I need? Is it possible I need to set up strong-end routing on the remote server to send the response packets back thru the VPN? (such a pain to configure) Any assistance will be most gratefully received! Best Regards, and my sincere kudos to the CentOS team and helpful list members over the past few years. Chuck

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For the CentOS team : The openais Nightmare. And some questions.
by F M 18 Oct '09

18 Oct '09

Hello guys, I have some questions about how the CentOS choose and rebuild RH RPMS. First here is my w-e nightmare : I have a 4 nodes Xen cluster using GFS2 (on SAN) and the Cluster Suite. Everything is from the CentOS repo. I am not updating these computers very often. I am always waiting several weeks to install updates just to be sure that everything is fine for others. This w-e I installed the lastest updates on these machines. Some were cluster related : cman, rgmanager and gfs2_tools. These updates are in the CentOS updates repo for 1 month now. After the reboot the cluster died. After hours of troubleshooting I found this thread on the Linux cluster mailing list : http://bit.ly/3HxVLu It said that CentOS is missing the openais update and without it the cluster is broken. The solution is to downgrade the RPMS installed. This fix the probe for now. Why the other RPM did not complain during the installation ? No idea. But what is interesting is that the threat 1 month old. And today the openais RPM is still missing from CentOS repo. It means that at the moment you cannot install a cluster using CentOS. Now my questions : Why after 1 month the update is still missing ? Without it : no cluster at all. As I am writing this email you cannot built a Cluster using CentOS. Is the RPMS for openais was hidden by RH ? No We can find it on the RH FTP. And after looking in other threat I found that Mr K Singh built it on 16-Sep-2009. So why can't I find it on the update. Once again I'd like to remind you that without it you cannot build a CentOS Cluster. I do not blame CentOS team. They are making a great job. Without them my company would not have a cluster. We cannot afford to pay 20k $ each year to RH for that. The team is making an amazing job and I do not care if I wait 1 or 2 months more for 5.4. And I really really respect Mr Singh. This email is not directed to him at all it is just that he is the one that kindly built the openais update and share it on his centOS page. But the question remains : why is this update is not on the repo ? And are they others ? Tx for answering me and have a good week-end. it is Sunday 6PM and mine finally starts ;-)

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installing working skype possible???
by ken 18 Oct '09

18 Oct '09

I easily installed and used skype on my previous linux distro on this same machine, but am having problems getting it to work on my relatively new centos 5.3. I downloaded three versions of skype from their website: the two fedora rpms wouldn't install, their error messages complaining that it needed another package, a package which was already installed. (I figured it had to be looking for that package in the wrong place... something I couldn't do anything about.) So I downloaded the suse 10+ rpm and it installed just fine. But when I ran it (/usr/bin/skype), it errored out also, saying "/usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.9' not found (required by /usr/bin/skype)". So I used yum to search for any glibc which remotely corresponded to that glibc and got nothing. So is anybody running skype on 5.3? If so, how did you install it and get it to work? Thanks for the good tips. -- War is a failure of the imagination. --William Blake

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Passenger Best Practice
by Stephen Nelson-Smith 18 Oct '09

18 Oct '09

I want to move from running puppet under it's own web brick server, to using passenger. I'd like to get an idea of how folk are running passenger? Ideally I'd like to keep everything rpm based, so would need ruby enterprise rpms, and then the mod_rails / passenger plugin? How are you folk doing it? I've seen: http://download.elff.bravenet.com/5/x86_64/repoview/mod_passenger.html And I've also seen: https://packages.endpoint.com/ Which seems to do some enterprise ruby. What else is out there? I'm more than happy to do it all myself, but if so it ought to be done in the way which best serves the project... So... what thoughts / recommendations? S. -- Stephen Nelson-Smith, Technical Director, Atalanta Systems Ltd

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Is AMD rev F the same thing as socket F?
by Neil Aggarwal 18 Oct '09

18 Oct '09

Hello: I am looking at the RHEL 5.4 virtualization guide. According to Chapter 17, if I want to use KVM on my machine, I need to check if it has the constant Time Stamp Counter by running this: cat /proc/cpuinfo | grep constant_tsc When I do that on the server (Currently running CentOS 5.3), I do not get any output. According to the output, that means my system does not have the counter. It then gives me instructions for AMD revision F CPUs. I did a search and did not find anything that seems relevant to revision F. The only stuff I am finding is talking about socket F. Is that the same things as a Socket F CPU or something different? Thanks, Neil -- Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com Will your e-commerce site go offline if you have a DB server failure, fiber cut, flood, fire, or other disaster? If so, ask about our geographically redundant database system.

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Totem needs plug-ins
by ken 18 Oct '09

18 Oct '09

Just tried to play a movie/DVD and Totem (what automatically popped up when I inserted the DVD) said it needed plug-ins... it didn't say which plug-ins. The website listed in the help page no longer exists. I have four of the gstreamer packages and libdvdcss installed, but I guess there's something more needed. Anyone know? tia for the tips. -- War is a failure of the imagination. --William Blake

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CentOS 5.4 and BitTorrent
by Yves Bellefeuille 18 Oct '09

18 Oct '09

If I remember correctly, when version 5.3 was released, about 95% was made available by BitTorrent before the official release date, so that the entire file would be available as soon as possible after the release. Could the same be done this time? -- Yves Bellefeuille <yan(a)storm.ca> "Yves Bellefeuille: Eterna malvenkanto en UEA" -- Heroldo Komunikas, n-ro 389

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Samba/BackupPC under CentOS-5.3
by Timothy Murphy 17 Oct '09

17 Oct '09

I'm almost completely ignorant about samba on Windows machines, In particular I know nothing about Windows permissions, if that is relevant here. I am running BackupPC on a CentOS-5.3 machine. It works perfectly for backing up Linux folders, but I have great difficulty extending it to Windows clients. To be precise, I have a share called "EA Games D" on a machine running Windows XP Pro. I can access it through Samba: ------------------------------------- m@rose ~]$ sudo mount -t cifs harriet:"EA Games D" /mnt/win Password: [tim@rose ~]$ ls /mnt/win The Sims 2 ------------------------------------- But I do not seem able to back it up with BackupPC . In my BackupPC conf file for harriet I have under Smb Settings "EA Games D" But when I run a backup (incremental or full) I get the error in /var/log/BackupPC/LOG 2009-10-17 14:43:43 Got fatal error during xfer (tree connect failed: NT_STATUS_BAD_NETWORK_NAME) Any advice or suggestions gratefully received. -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

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CentOS build scripts (or equivalent) acessible?
by Mathieu Baudier 17 Oct '09

17 Oct '09

from [CentOS] CentOS 5.4? anyone? > Is that a big problem for the people who write the code and have every > revision preserved for posterity (and for others to learn from) in a > public revision control system? > I'm not sure that I understand. Is there indeed such a public repository of the build scriptds / RPM specs used by CentOS? That would indeed be fascinating and useful to have a look at it. (I rebuilt libvirt from RedHat SRPM, just to test the some new virtualization feature of v5.4, and going through the process I kept wondering how the CentOS team is doing it on all the packages!)

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iscsi target for C5.x
by John R Pierce 17 Oct '09

17 Oct '09

Does anyone have any recommendations for the best way to bring up a iSCSI Target on a C5.3+ server ? Various blogs suggest compiling IET from source, but thats not real appealing to me (not that I can't do it, I just don't want to have to support it long term). I looked in rpmforge but didn't see anything.

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[off-topic] Build packages in virtual machine
by Marcelo M. Garcia 17 Oct '09

17 Oct '09

Hi Sorry for the silly question, but is it safe to build packages, like rpms, in virtual machines (virtualbox) and use this packages in real machines? Some of these machines are CentOS and others ares Opensuse. I need to build (or would be very useful to have) Ganglia 3.1.x Thanks Marcelo

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CentOS 5.4? anyone?
by mbneto 16 Oct '09

16 Oct '09

Hi, The last status (from twitter) is 2 days old with the '5.4 is baked! centos internal network will start syncing up today. Release ~ soon!'. Any ETA? - Regards.

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so when's 5.4 going to be out? :-)
by Robert P. J. Day 16 Oct '09

16 Oct '09

no, no, just kidding, but this is interesting: http://news.cnet.com/8301-13505_3-10376762-16.html rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Annoying Kernel Pedantry. Web page: http://crashcourse.ca Twitter: http://twitter.com/rpjday ========================================================================

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CentOS-announce Digest, Vol 56, Issue 5
by centos-announce-request＠centos.org 16 Oct '09

16 Oct '09

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-2009:1501 Important CentOS 4 x86_64 xpdf Update (Johnny Hughes) 2. CESA-2009:1501 Important CentOS 4 i386 xpdf Update (Johnny Hughes) 3. CESA-2009:1503 Important CentOS 4 i386 gpdf Update (Johnny Hughes) 4. CESA-2009:1503 Important CentOS 4 x86_64 gpdf Update (Johnny Hughes) 5. CESA-2009:1512 Important CentOS 4 i386 kdegraphics Update (Johnny Hughes) 6. CESA-2009:1512 Important CentOS 4 x86_64 kdegraphics Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Fri, 16 Oct 2009 08:29:40 -0500 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2009:1501 Important CentOS 4 x86_64 xpdf Update To: CentOS-Announce <centos-announce(a)centos.org> Message-ID: <4AD87544.6060804(a)centos.org> Content-Type: text/plain; charset="iso-8859-1" CentOS Errata and Security Advisory 2009:1501 Important Upstream details at : http://rhn.redhat.com/errata/RHSA-2009-1501.html The following updated files have been uploaded and are currently syncing to the mirrors: source: xpdf-3.00-22.el4_8.1.src.rpm x86_64: xpdf-3.00-22.el4_8.1.x86_64.rpm

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CentOS 5.4? anyone? - "debate"
by Gabriel - IP Guys 16 Oct '09

16 Oct '09

Dear All, If someone asks a question such as "When is Centos 5.4 coming out" bare in mind that it may be because they genuinely want to know when it's coming out, and feel that somehow, they have not been privy to that information. To me, I see CentOS as a polished professional product given what it is, a repackaging of RHEL, and to that end I have the expectation of a fully fledged professional product, which includes static release dates. (I know it's not always possible, so please, no flames) I say this with love, and all the maturity that goes with it, "I can't WAIT for CentOS 5.4!!!" but at least I have the luxury of understanding the process which prevents 5.4 from coming out on a particular day. The owners of 600 or so servers out there which I look after, like to believe they are techie people, because they can use Google, and they can read a few articles that say Centos 5.4 on the way. I get very regular emails asking why there server is still on centos 5.2, and I have to explain, if it's not broke, I'm not fixing it! On TV, when you watch a commercial that tells you of the latest blockbuster movie - there is a date attached. The next butt kicking FPS for Xbox 360... has a release date. So many products that have a "limited" life span (iPods, games consoles, mobile phones, books, songs) are planned with a "static" release date, and if that date is missed, bad press is almost a guarantee! The point I'm making, is that people have become used to knowing when things will happen. (I believe this is illustrated in the number of people fascinated with Flash Forward! Google is your friend). So, give them a break - and the idiots that insult other people who obviously do not understand how things work need to instead take the time, and understand that the internet is no longer the domain/hangout of the technically savvy. Even Linux is no longer the realm of only the technical geniuses, (although there are a lot of us!) When someone asked "When will *CentOS 5.4 come out??* The answer is, "When it is good and ready", and when they ask "Why/What does that mean?", ask them to Google "open source distribution release cycle". That should keep them busy for long enough for me/you to actually get some work done J --- Kind Regards, Mr Gabriel

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routing using iproute2 nexthop
by Bazy 16 Oct '09

16 Oct '09

Hello Everyone, I configured a server for a friend's Internet cafe. He has 2 ISPs. Here is what I did: ## NAT -A POSTROUTING -s 10.0.0.0/255.255.255.128 -o eth2 -j SNAT --to-source 82.77.148.83 -A POSTROUTING -s 10.0.0.0/255.255.255.128 -o eth0 -j SNAT --to-source 83.103.190.175 ## Removing default routing /sbin/ip rule add prio 50 table main /sbin/ip route del default table main ## Default gateway using nexthop /sbin/ip rule add prio 201 from 82.77.148.83/25 table 201 /sbin/ip route add default via 82.77.148.1 dev eth2 src 82.77.148.83 proto static table 201 /sbin/ip route append prohibit default table 201 metric 1 proto static /sbin/ip rule add prio 202 from 83.103.190.175/27 table 202 /sbin/ip route add default via 83.103.190.161 dev eth0 src 83.103.190.175 proto static table 202 /sbin/ip route append prohibit default table 202 metric 1 proto static /sbin/ip rule add prio 222 table 222 /sbin/ip route add default table 222 proto static nexthop via 82.77.148.1 dev eth2 nexthop via 83.103.190.161 dev eth0 ## Running ping so kernel is aware if a gateway is down /bin/ping 82.77.148.1 >/dev/null & /bin/ping 83.103.190.161 >/dev/null & My problem is that if the second gateway (83.103.190.161) stops responding the kernel will not notice and will keep forwarding traffic to it. Only if I "ifdown" the interface it will see it as down. As you can see above I run a continuous ping to both gateways. I'm just out of ideas... [root@dell ~]# ip route show table 222 default proto static nexthop via 82.77.148.1 dev eth2 weight 1 nexthop via 83.103.190.161 dev eth0 weight 1 dead Thanks, Bazy

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Sparc?
by ML 16 Oct '09

16 Oct '09

HI All, I have acquired a Sun Fire VL 240. I know there is not a SPARC version of CentOS. Can anyone recommend a good OS for a machine that will do apache, postfix, mysql, etc. I know this is sort of a loaded question, but I don't have a lot of knowledge on distros that are stable on Sparc. -Jason

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continuing issues with %post
by David Mehler 16 Oct '09

16 Oct '09

Hello, I'm trying to do an unattended CentOS 5.3 install. For the most part it's working. As of right now i'm statically assigning the machine an IP which i believe will allow %post to resolve names? I also like knowing where the box will show up. I am however having a few issues and I'm probably thinking to complicated on them. My first one is the fact that updates aren't working from %post. Under the assumption name resolution is working, see above with the static configuration, the issue is then most likely importing of gpg keys. I've got these lines in %post: # GPG keys echo "Importing GPG keys ..." rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY* /usr/bin/yum -y update When they're uncommented the box hangs, i'd love to see output. My second issue is a cosmetic one. I want to set a standard prompt in /etc/bashrc. Out of the box the bashrc PS1 lines: if [ "$PS1" ]; then [ "$PS1" = "\\s-\\v\\\$ " ] && PS1="[\u@\h \W]\\$ " I have to make changes to that second line so a sed substitution would probably be my best bet. I'm not sure how to grab the part i need and change it. Manually i change that line to: PS1='\u@\h:\w\$' I'd like to get %post to do that for me. Next, i'd like to alter /boot/grub/grub.conf. I want to set it up for serial terminal support, so i have to add a serial and terminal lines at the top of the file say after any comment blocks that might or might not be there plus add console=tty0 and/or console=ttyS0,9600n8 to the append lines to however many kernels are there. Again, i'm assuming sed but i'm not sure how to get the parts i need and edit. I want to do other things, mostly with security, increasing password complexity requirements and pam, but that should be easy once i figure out how to alter the right sections in files. Any help appreciated. Thanks. Dave.

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post install freezes
by David Mehler 16 Oct '09

16 Oct '09

Hello, I'm doing an unattended CentOS 5.3 install in a virtual machine vmware. I'm redirecting output to a serial console because production boxes won't have monitors. I'm getting to the point of doing the post installation then the box freezes. The only command i have in %post is yum -y update. I'm not getting no output. Suggestions appreciated. In the commands section reboot is explicitly called so that at the end of the install the vm will reboot. Thanks. Dave.

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timekeeping on VMware guests
by Carlos Santana 15 Oct '09

15 Oct '09

Howdy, I am having time-drift issues on my CentOS VM. I had referred to following documentation: http://wiki.centos.org/TipsAndTricks/VMWare_Server , however it didn't help. I used kickstart for creating this VM and I am listing important steps in ref to timekeeping issue. Any comments or suggestion would be appreciated. - CS. ------------------- # For EL5 virtual machines, Append the following in Grub to help keep the clock from drifting # and to reduce the interupt requests # 32bit: --append="rhgb quiet divider=10 clocksource=acpi_pm" # 64bit: --append="rhgb quiet notsc divider=10" bootloader --location=mbr --md5pass=$1$mXSD1l6mO$BBCk1gYArAATS7dlCQGthN. --append="rhgb quiet divider=10 clocksource=acpi_pm" %packages --nobase # Other packages not listed here # ntp was installed ntp ### Add step-tickers ### cat > /etc/ntp/step-tickers <<\EOF2 0.centos.pool.ntp.org 1.centos.pool.ntp.org EOF2 ### End of step-ticker file ### -------------------- # Applied patch mentioned on CentOS page # http://wiki.centos.org/TipsAndTricks/VMWare_Server patch --verbose -b -l -i /root/ntp.patch -------------------- VMware Tools not installed. -------------------- Thanks, CS.

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Re: [CentOS] Sparc?
by Tim Nelson 15 Oct '09

15 Oct '09

----- "ML" <mailinglists(a)MailNewsRSS.com> wrote: > HI All, > > I have acquired a Sun Fire VL 240. I know there is not a SPARC version > > of CentOS. > > Can anyone recommend a good OS for a machine that will do apache, > postfix, mysql, etc. > > I know this is sort of a loaded question, but I don't have a lot of > knowledge on distros that are stable on Sparc. > > -Jason I've been an avid Sun/SPARC user/abuser/collector for some time now. For my boxes in production, I typically run FreeBSD at it seems to be the closest to "Linux world" to keep the learning curve shorter since my roots lie there. It is rock solid and performs well, even on older hardware like my Enterprise 420r. Debian works also although I don't have enough experience with it on SPARC to truly comment. If you're looking for pure usability, *BSD or Debian may be your best bet. If you want top notch performance, you're probably better off with (Open)Solaris. And of course, it all depends on your comfort level. There was Aurora Linux at one time for a Redhat based system running on SPARC. The site is still available although it appears to be largely dead: http://auroralinux.org/ . If you have any other SPARC related issues/questions, you are more than welcome to mail me off-list. Tim Nelson Systems/Network Support Rockbochs Inc. (218)727-4332 x105

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CentOS-announce Digest, Vol 56, Issue 4
by centos-announce-request＠centos.org 15 Oct '09

15 Oct '09

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-2009:1500 Important CentOS 3 x86_64 xpdf - security update (Tru Huynh) 2. CESA-2009:1500 Important CentOS 3 i386 xpdf - security update (Tru Huynh) ---------------------------------------------------------------------- Message: 1 Date: Thu, 15 Oct 2009 13:03:48 +0200 From: Tru Huynh <tru(a)centos.org> Subject: [CentOS-announce] CESA-2009:1500 Important CentOS 3 x86_64 xpdf - security update To: centos-announce(a)centos.org Message-ID: <20091015110348.GA10978(a)sillage.bis.pasteur.fr> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory CESA-2009:1500 xpdf security update for CentOS 3 x86_64: https://rhn.redhat.com/errata/RHSA-2009-1500.html The following updated file has been uploaded and is currently syncing to the mirrors: x86_64: updates/x86_64/RPMS/xpdf-2.02-17.el3.x86_64.rpm source: updates/SRPMS/xpdf-2.02-17.el3.src.rpm You may update your CentOS-3 x86_64 installations by running the command: yum update xpdf Tru -- Tru Huynh (mirrors, CentOS-3 i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B

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Inquiry:What is the equivalent of nmap command on CentOS 5.2 ?
by hadi motamedi 15 Oct '09

15 Oct '09

Dear All Please be informed that I have installed CentOS 5.2 on my client but it does not have nmap command . Can you please do me favor and let me know what is the equivalent of nmap command on CentOS 5.2 ? Thank you in advance

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Re: [CentOS] CentOS Digest, Vol 57, Issue 14
by tony.chamberlain＠lemko.com 15 Oct '09

15 Oct '09

Thanks for the responses. I think this is what I want to do. I commented out #Defaults requiretty in /etc/sudo. But what I really wanted to do was just place it in VPNUSERS: %vpnusers ALL=NOPASSWD: /sbin/service myciscovpn start, \ /sbin/service myciscovpn stop, \ /sbin/service myciscovpn status, \ /usr/bin/mycisco, /usr/local/bin/vpnclient visudo took it but it did not work. Actually if I could just put it in user tony that would be best: tony ALL=(ALL) NOPASSWD: ALL !requiretty But that gives a syntax error. What is the correct way to specify it? -----Original Message----- > Well, I noticed that ssh/scp probably requires tty and when called > from a script, its not from a tty. > > At least in my case which was drupal calling a script that lauched > ssh, a non tty source. > > I also required running privileged commands. > > Mebbe you don't need all this so check your logs and see what happens. > My last job, I was setting up rsync backups. What I did was create a user, backup, then in /etc/sudoers, have !requiretty *only* for that user. The user was also limited in what commands it could run (in that case, rsync only). Don't forget to log in as that user first, so that you don't get the "Oh, This is a new IP, are you Sure you want to continue connecting?!?!" mark

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Dell Equallogic
by Eugene Vilensky 15 Oct '09

15 Oct '09

Hi List, Does anyone here use Dell Equallogic IP SAN? If so, do you have any immediate high points / low points you wouldn't mind discussing on- or off-list ? Thanks.

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Problems printing landscapes in AR
by MHR 15 Oct '09

15 Oct '09

I have the L&G (AFAIK) Adobe Acrobat Reader, 9.1.0, on my 5.3 x86_64 machine, but it seems to be incapable of printing some landscape-mode PDFs. I created them by printing some wide graphics (PNG) files to PDF files from the image viewer, and that didn't work - AR prints them ONLY in portrait mode, no matter how the portrait-landscape is set, and no matter how it is displayed. Then I tried converting the graphics to PDFs using Adobe Photoshop Elements 2.0 (yeah, I know it's old, but it's free and it works for some things the GIMP won't do, like making graphics into PDFs) on my virtual WinXP SP2 "box" and got the same results. To my surprise, if I just print the PNGs from the image viewer, they print in landscape mode just fine (although they display in pseudo-portrait mode as counter-clockwise rotated images). Anyone got a clue why this might be? I blew away the PDFs that wouldn't print ('cuz I was pissed) but I can recreate them if needed. And, no, I'm not interested in tiff2pdf - it made enormous PDFs (4-10x original file size) out of every TIF I've tried with it, and APE2 makes little ones that are just as good _and_ smaller. Thanks. mhr

1 0

Mounting Network Storage Issues
by DTS-Corp (Knowledgebase) 15 Oct '09

15 Oct '09

I have an Iomega NAS 1TB drive that I am using as just kind of a file sharing solution between all of my computers. Of course it is on a timed backup with my server however it just serves as a temporary solution for a bigger problem ( IE 15 different puters of all various OS Flavors). However I am not able to connect to any network storage server such as Windows PC's or NAS Storage using map network drive functions normally used with windows on CentOS. I am wondering if there is something goofy with this or is Cent just incompatible with NTFS network storage drives?

3 2

QT-Designer 4
by DTS-Corp (Knowledgebase) 15 Oct '09

15 Oct '09

Does anyone know if there is any compatible QT-Designer for use with Cent OS other than 3 EL5? I am still trying to get keepassx to work with CentOS

1 0

CentOS 5.3 on X86_64: yum installs both i386 and x86_64 packages
by Patrick McEvoy 14 Oct '09

14 Oct '09

Hello, Is it advisable to clean up the system by deleting the i386 rpms? If so how do you know which ones to remove and which ones CentOS or RHEL require to be installed? You can use “yum list installed \*.i386″ to list all of the i386 rpms installed on your x86_64 system and I assume you could use “yum remove installed \*.i386″ to remove them all. If there were a few which were necessary to keep you could exclude them in yum.conf. Thanks for the help, Patrick

7 8

Simple way to banish IP addresses ?
by Niki Kovacs 14 Oct '09

14 Oct '09

Hi, I just set up a web server... and my bandwidth is being eaten by some chinese folks trying to brute-force-ssh their way into the machine. Is there a simple way to banish either single IP addresses or, maybe even better, whole IP classes ? I know it's feasible with iptables, but is there something more easily configurable ? Cheers, Niki

13 14

Update question
by Ron Loftin 14 Oct '09

14 Oct '09

I have some customer machines that have not been updated for some time, and are still on CentOS 5.2. While reading the release notes for 5.4, I have not yet seen anything that looks like it needs attention, but are there any known issues or "gotchas" related to moving directly from 5.2 to 5.4? Comments, pointers, things to look for are all welcome. Thanks muchly. -- Ron Loftin reloftin(a)twcny.rr.com "God, root, what is difference ?" Piter from UserFriendly

4 5

Best practice settings for channel bonding interface mode?
by Götz Reinicke - IT-Koordinator 14 Oct '09

14 Oct '09

Hi, may be there are some best practice suggestions for the "best mode" for channel bonding interface? Or in other words, when should/would I use which mode? E.g. I do have some fileservers connected to the users lan and to some ISCSI Storages. Or some Webservers only connected to the LAN. The switches are all new cisco models. I've read sone docs (1), (2) and (3) so the theory is mostly clear. Thanks for any suggestion or hint, Best regards, Götz (1) http://www.linuxhorizon.ro/bonding.html (2) http://www.linuxtopia.org/online_books/rhel5/rhel5_administration/rhel5_s1-… (3) http://www.linuxtopia.org/online_books/rhel5/rhel5_administration/rhel5_s1-… -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 420 Fax +49 7141 969 55 420 E-Mail goetz.reinicke(a)filmakademie.de Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzende des Aufsichtsrats: Prof. Dr. Claudia Hübner Staatsrätin für Demographischen Wandel und für Senioren im Staatsministerium Geschäftsführer: Prof. Thomas Schadt

4 3

scp with tty
by tony.chamberlain＠lemko.com 13 Oct '09

13 Oct '09

Hello I need to know a way to have scp allocate a tty on a remote machine so I can have it run sudo and activate a vpn which it will need to activate. scp with "-S" does not work. I can't chmod +s the cisco vpn client because when I try to run it it says it can not have setuser. I could have the user scp via root but I do not want to do that. Any way to have scp allocate a tty?

7 8

customized centos 5.4 install, core install?
by David Mehler 13 Oct '09

13 Oct '09

Hello, This might be called a core build not completely positive. What i want to do is make a completely customized centos 5.4 unattended CD or DVt not only installs a specific list of apps apps that i want on each system, but configures them automatically perhaps via scripts, and enables or disables services etc. Basically, i want to drop the CD or DVD in a box which will probably not have a monitor anyway, and walk away. I then come back or ssh in and everything is already installed, any repos are added, configured and ready to go. Is this a core build? I'd appreciate any pointers on this. Thanks. Dave.

10 14

web based file sharing software
by Ramon Nieto 13 Oct '09

13 Oct '09

Hello all Does anybody knows about web based file sharing software? of course that runs on centos. i have found 3 proyects on sourceforge, but i would like to hear from you what do you use or what do you recommend?. Thank you in advance.

5 7

layer 8 / user level firewall on linux?
by Rudi Ahlers 13 Oct '09

13 Oct '09

Hi all, Does anyone know of a Linux firewall that offers layer 8 firewall / user level firewalling? Cyberoam (http://www.cyberoam.com/firewall.html) has a layer 8 firewall built into their UTM firewalls, and while it's a great product I find it a bit limited for what I want. I basically want to track which user access what on the internet, from an internal network. Ideally I want to limit access to certain objects (i.e. websites, by URL / keyword / type, FTP, skype, MSN, etc) for certain users as well. -- Kind Regards Rudi Ahlers CEO, SoftDux Hosting Web: http://www.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

3 2

Copy OS live to different hardware
by Bob Puff 13 Oct '09

13 Oct '09

Hello, I've got some CentOS 5.3 servers that I want to clone to a backup server, possibly a VM machine. I want this to be done while the server is up, and keep it synced at least once a day. I've done this already by using RSYNC, but here's the twist: the backup machine could be different hardware, and needs to have a different IP address (so they don't conflict). My question: exactly what files should I exclude, so that I copy everything -except- what pertains to the ethernet card(s), and hard drive mounts. I know of at least: /etc/fstab /etc/sysconfig/network-scripts/* /var/run /proc But what else? The original servers may have software raid, so those files can't be copied either. Bob

4 3

CentOS for boot.kernel.org
by Geerd-Dietger Hoffmann 13 Oct '09

13 Oct '09

Hey Is there an initiative to get CentOS to work with boot.kernel ? Cheers Didi ---- My www page: www.ribalba.de Email / Jabber: ribalba(a)gmail.com Skype : ribalba

2 1

question on 5.4
by Jerry Geis 13 Oct '09

13 Oct '09

Does 5.4 come with an updated openoffice. 5.3 comes with version 2.3 was wondering if 5.4 will have 3.1 thanks Jerry

5 4

Inquiry:Application cannot start on my CentOS 5.2
by hadi motamedi 13 Oct '09

13 Oct '09

Dear All Please be informed that I tried to start my application on my CentOS 5.2 client but it cannot be started and returns the following error message : "There are 1744M available in /usr Starting mscmain service : system clock granularity : 1 microseconds. Error ip address Error config file ./conf/msc_sys.conf!" Can you please do me favor and help me ? Thank you in advance

3 2

Inquiry:Problem mounting cdrom on my CentOS 5.2 client
by hadi motamedi 13 Oct '09

13 Oct '09

Dear All Please be informed that I needed to mount my cdrom on my CentOS 5.2 client , but unsuccessful . I tried as the followings : #mount -t vfat /dev/cdrom-hdc /mnt/cdrom Add the following line to /etc/fstab : /dev/cdrom-hdc /mnt/cdrom vfat noauto,users,noexec,rw,uid=1000,gid=1000 0 0 #mount /mnt/cdrom But I cannot see the CD content . Can you please do me favor and correct me ? Thank you in advance

2 2

Re: [CentOS] Dell Equallogic
by Andrew Cotter 13 Oct '09

13 Oct '09

We use a pair for production and DR. Email me off list and I would be glad to discuss. Andrew ------Original Message------ From: Eugene Vilensky Sender: centos-bounces(a)centos.org To: CentOS mailing list ReplyTo: CentOS mailing list Subject: [CentOS] Dell Equallogic Sent: Oct 12, 2009 8:04 PM Hi List, Does anyone here use Dell Equallogic IP SAN? If so, do you have any immediate high points / low points you wouldn't mind discussing on- or off-list ? Thanks. _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

1 0

Possible to run iscsi-target and initiator on same server?
by C Linus Hicks 12 Oct '09

12 Oct '09

I am trying to install Oracle RAC in a two node cluster for testing purposes, so performance is not something that concerns me. I just want to go through the process all the way to creating a database. I have all the prerequisites except the shared storage and thought I'd give this a try. I'm running: - CentOS 5.3 kernel 2.6.18-164.el5 - iscsitarget-1.4.18-1 - iscsi-initiator-utils-6.2.0.868-0.18.el5_3.1 I can discover and login to the node using iscsiadm on the server that is not also running iet, and see the new scsi disk. When I try to login using iscsiadm on the server that is running the ietd daemon, I see packets going over the lo interface in both directions, but I get error 8 - connection timed out. Wireshark is reporting TCP Previous segment lost errors with large sequence numbers like 2999833 and 8999718. Has anybody tried this, and can anybody offer any help? Thanks. Linus

2 17

Centos 5.2 ISO not available ???!!!!
by Agnello George 12 Oct '09

12 Oct '09

Hi All this is really wired ... i searched in all mirrors ( i hope ) ... but i don't seem to find then availability of cent os 5.2 iso .. ... the thing is all our perl version depen on Cent os 5.2 ... Does any one know whyCentod 5.2 is not available !! ... Thanks !! ... -- Regards Agnello D'souza

3 2

Rythmbox and MP3
by Robert Spangler 12 Oct '09

12 Oct '09

Hello, Can anyone tell me how to get the 2 in the Subject line to work? I have read a lot about adding this or that repo but still no joy as usually deps are missing. :( Thnx -- Regards Robert Linux User #296285 http://counter.li.org

5 6

Inquiry:Problem installing application on Cent OS
by hadi motamedi 12 Oct '09

12 Oct '09

Dear All Please be informed that I tried to install the "Real VMX" application on my Cent OS client . I setup the environment variables and build kernel . Then I add the following entry to my /boot/grub/menu.lst : title Real VMX rootnoverify (hd0,0) kernel -type=netbsd /vmx I tried to reboot my Cent OS client and at the boot loader when I select "Real VMX" I got the following error : "Error 1 : File name must be either an absolute pathname or blocklist" Can you please do me favor and let me know how can I overcome ? Let me thank you in advance

3 6

xen guest system - install source
by Jussi Hirvi 12 Oct '09

12 Oct '09

I am installing my first xen system (CentOS 5.3). The host system seems to be ok. I am following this tutorial: http://www.howtoforge.com/installing-xen-on-centos-5.2-i386-p2 Now I try to use virt-install to install the first guest system, but I cannot find a working install source. I have tried at least these: http://ftp.funet.fi/pub/mirrors/centos.org/5.3/isos/i386/ http://ftp.funet.fi/pub/mirrors/centos.org/5.3/isos/i386/CentOS-5.3-i386-ne… Always I get "Could not find an installable distribution". What should I use as path? This should be very simple, right? :-) - Jussi Hirvi Helsinki

9 15

Thiago Avelino has invited you to Dropbox
by Dropbox 12 Oct '09

12 Oct '09

We're excited to let you know that Thiago Avelino has invited you to Dropbox! Thiago Avelino has been using Dropbox to sync and share files online and across computers, and thought you might want it too. Visit http://www.getdropbox.com/link/20.fbqG0o6V9e/NjM3MTY3NTg3 to get started. - The Dropbox Team ____________________________________________________ To stop receiving invites from Dropbox, please go to http://www.getdropbox.com/bl/b638eeff67ca/centos%40centos.org

1 0

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