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help diagnosing tftp server on centos 5
by Jerry Geis 02 Nov '07

02 Nov '07

Hi all, I have a centos 5 box I have setup, current with updates. (I have done this many times on centos 4). I did the yum install tftp-server, changed the /etc/xinetd.d/tftp file as shown. # default: off # description: The tftp server serves files using the trivial file transfer \ # protocol. The tftp protocol is often used to boot diskless \ # workstations, download configuration files to network-aware printers, \ # and to start the installation process for some operating systems. service tftp { socket_type = dgram protocol = udp wait = yes user = root server = /usr/sbin/in.tftpd server_args = -v -s /tftpboot disable = no per_source = 11 cps = 100 2 flags = IPv4 } Did the service xinetd restart. Now from another computer on the network I am trying manually "tftp IP -c get myfile" and nothing happens. /tftpboot permissions are: drwxr-xr-x 4 root root 4096 Oct 2 16:26 tftpboot the myfile is also world readable in that directory. I have disabled the iptables "service iptables stop". I ran "tcpdump port 69" to show me all tftp traffic an I see NOTHING when I manually run the tftp command above on another computer. The second computer can ssh into the server no problem. I can, on the server, to tftp localhost -c get myfile and that works fine. What or HOW can I determine why I cannot tftp from that machine? This seems so straight forward. Thanks, frustrated me... Jerry

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Re: [CentOS] CentOS to support ICH9
by David Hrbác( 02 Nov '07

02 Nov '07

Jake Grimmett napsal(a): > Hi David, > > I'm having problems posting this to the message board, hence sending this > email directly to you: > > ***********snip************** > Just thought I'd say thanks to David - his image works with the new Dell > Optiplex 755's in ATA mode (the normal kernel allows AHCI, but no CD-ROM). > > All I needed to get a fully working system, was to put in the Intel Ethernet > drivers for the 82566DM chip it uses. This was stupidly easy - get the tar > ball from Intel, run 'rpmbuild -tb e1000-7.6.9.tar.gz ; then rpm -iv the > package. > > Of course I'm hoping that Redhat 5.1 will include all these patches, but do we > know when this is coming out? Would it be too cheeky to ask David Hrbac to > roll the Intel e1000 drivers into his next iso delta....? > ***********snip************** > > many thanks > > Jake Hi Jake, thanks. Maybe I could extend those install DVD with some rpms. I vote for these two for now: e1000 r8198 Regards, David

4 7

Yum Problem
by Jun Salen 02 Nov '07

02 Nov '07

Hi, I have no problem running yum update inside the root prompt, but when running yum using sudo as logged-in as ordinary user and command the 'sudo yum update', I am having below error: Could not retrieve mirrorlist http://apt.sw.be/redhat/el5/en/mirrors-rpmforge error was [Errno 4] IOError: <urlopen error (110, 'Connection timed out')> Error: Cannot find a valid baseurl for repo: rpmforge This happened even I try to export my proxy server since where using them to connect internet. This is in a newly installed CentOS5 box. I also try to issue 'yum clean metadata' and 'yum clean all' but the problem still persists. Can you please give me the clue on how to solve this. Thanks, junji aisalen.wordpress.com Linux Registered User #253162 Send instant messages to your online friends http://uk.messenger.yahoo.com

2 1

yum message
by Bob Taylor 02 Nov '07

02 Nov '07

I am getting the following daily: etc/cron.daily/yum.cron: ** Message: sqlite cache needs updating, reading in metadata ** Message: sqlite cache needs updating, reading in metadata I have run "yum clean dbcache" each time I see this. What am I missing? Bob -- Bob Taylor <bob8221(a)gmail.com>

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Time Change
by Bob Taylor 01 Nov '07

01 Nov '07

Has anyone noticed the time change from Daylight to Standard Sunday? Is there a fix in the works? -- Bob Taylor <bob8221(a)gmail.com>

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restore to different hardware?
by Les Mikesell 01 Nov '07

01 Nov '07

Is there a HOWTO or checklist that covers the typical steps to back up a working machine and restore it to a machine with different disk controllers and network cards? I've muddled through it a time or two, sometimes rebuilding the initrd, sometimes doing a dummy install just to get a working /boot and modprobe.conf, sometimes copying the /boot partition from a machine with identical hardware and / from the one I want to restore, but I always forget some detail - like fixing modprobe.conf or fstab, or making sure that the kernel versions are at the same rev when copying /boot and / from different sources. If there are other differences, they can be patched up fairly easily once the machine boots and is on the network. -- Les Mikesell lesmikesell(a)gmail.com

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Network issue after new kernel install
by Paul Norton 01 Nov '07

01 Nov '07

Hello CentOS list, On all of my CentOS 5 VMWare ESX3 virtual machines (about 15), after installing a new kernel and rebooting the machine, the Network script tries to run dhclient and can't determine the IP info (since I don't run a dhcpd server... it's a static IP only lan). This also backs up my ifcfg-eth0 file to ifcfg-eth0.bak and writes a new ifcfg-eth0 that has dhcpd with no IP info. Copying the ifcfg-eth0.bak to ifcfg-eth0 and running /etc/init.d/network start or ifup eth0 brings my network back up. This is an example of what one of my ifcfg-eth0 files looks like... # Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] DEVICE=eth0 BROADCAST=69.x.x.x #HWADDR=00:50:56:9C:19:7D IPADDR=69.x.x.x IPV6ADDR= IPV6PREFIX= NETMASK=255.255.255.0 NETWORK=69.x.x.0 ONBOOT=yes Any ideas? TIA, -- Paul Norton Systems Administrator Neoverve - www.neoverve.com Neoverve Blog - http://blog.neoverve.com/

3 4

CentOS Web Stack
by Robert Slade 01 Nov '07

01 Nov '07

Hi, I am looking to build a Lamp and I see that the Web Stack is for CentOS 4 only - Is it going to be updated for 5 or can it be used as is? Rob

2 2

help diagnosing tftp server on centos 5 - fixed
by Jerry Geis 01 Nov '07

01 Nov '07

> > Hi all, > > I have a centos 5 box I have setup, current with updates. (I have done > this many times on centos 4). > I did the yum install tftp-server, changed the /etc/xinetd.d/tftp file > as shown. > > # default: off > # description: The tftp server serves files using the trivial file > transfer \ > # protocol. The tftp protocol is often used to boot diskless \ > # workstations, download configuration files to network-aware > printers, \ > # and to start the installation process for some operating systems. > service tftp > { > socket_type = dgram > protocol = udp > wait = yes > user = root > server = /usr/sbin/in.tftpd > server_args = -v -s /tftpboot > disable = no > per_source = 11 > cps = 100 2 > flags = IPv4 > } > > > Did the service xinetd restart. > > Now from another computer on the network I am trying manually "tftp IP > -c get myfile" > and nothing happens. > > /tftpboot permissions are: drwxr-xr-x 4 root root 4096 Oct 2 16:26 > tftpboot > the myfile is also world readable in that directory. > > I have disabled the iptables "service iptables stop". > > I ran "tcpdump port 69" to show me all tftp traffic an I see NOTHING > when I manually > run the tftp command above on another computer. > The second computer can ssh into the server no problem. > > I can, on the server, to tftp localhost -c get myfile and that works fine. > > What or HOW can I determine why I cannot tftp from that machine? > This seems so straight forward. > > Thanks, frustrated me... > > Jerry unbelievable - ended up being a DHCP issue. thanks for the suggestions. Jerry

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Re: ssh with proxy?
by Nicolas Thierry-Mieg 01 Nov '07

01 Nov '07

Scott Ehrlich wrote: > What is the recommended way to ssh through a proxy? I've been using > putty, compiled from source, as it has a proxy option, but a native option > would be very nice. If I understand what you want to do, you can use the builtin ssh ProxyCommand Let's say you want to connect from your home machine to various machines in the .imag.fr domain, going through sshgate.imag.fr (the only host in imag.fr that is accessible by ssh from the outside). On the home client, make a file called config in your ~/.ssh/ dir. Mine looks something like this: [nico@localhost ~]$ cat ~/.ssh/config Host *.imag User nico ProxyCommand ssh nico(a)sshgate.imag.fr "nc $(basename %h .imag) %p" Then I can type "ssh host1.imag", and it works. It's also fine with sftp, scp, and pretty much anything that runs over ssh. nc has to be installed on sshgate, but it most probably is (might be called netcat). You have to type 2 passwords unless you use ssh key authentication, which you should (at least between home and sshgate). hope this helps. Nico TM

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