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Yum/WGET/HTTP sourceforge etc.
by tony.chamberlain＠lemko.com 12 Apr '10

12 Apr '10

I am having a problem with 5.4 that I did not have with 4.5. The problem happens only sometimes but in specific instances. Basically a summary of the problem is that certain network transactions timeout. The specfic instances are with wget, rpm, http. The problem usually, but not always, occurs with pptp stuff. (NOT running pptp but getting pptp stuff). For instance, the following command, which finishes in seconds on non-5.4 OS's: wget http://pptpclient.sourceforge.net/yum/stable/rhel4/pptp-release-current.noa… downloads about 20% then gets stuck. About 5 minutes later it downloads another 20% and then gets stuck, etc. The same thing with rpm: rpm -ivh http://pptpclient.sourceforge.net/yum/stable/rhel4/pptp-release-current.noa… waits about 3 minutes and then gives an error. I think it does the same thing as the wget but wget will keep trying, while rpm gives up. The error from rpm: Retrieving http://pptpclient.sourceforge.net/yum/stable/rhel4/pptp-release-current.noa… ..five minutes later: error: /var/tmp/rpm-xfer.DYY9e0: headerRead failed: hdr blob(7456): BAD, read returned 3568 error: /var/tmp/rpm-xfer.DYY9e0 cannot be installed I can wget the above as I mentioned before and install it that way. Before I do it, yum works fine. Afterwards, yum exhibits the same behavior of timing out (because it is using the pptp repository). Also visiting the pptp web site from Firefox times out on certain pages. I originally thought it was some problem with the pptp site, but I notice that log into hotmail.com does the same thin (fine on other operating systems). A view with Wireshark on the wget (pptp) shows the my machine receiving a reassembled TCPPDU from 216.34.181.96 (Sourceforge), sending an ack, receiving a reassembled PDU, sending an ack, receiving, sending followed by the 5 minutes or whatever of nothing. Then sourceforge sends an RST and a SYN and the process is repeated. Here is what I tried. When I put the machine directly on an AT&T IP connection (12.147.X.Y) everything worked fine. Same with Comcast on a direct link. The times I am having problems is when our router is hooked up to a Comcast IP (70.88.X.Y) and assigns 192.168.5.X addresses to our machines. So when I was doing the above from 192.168.5.27 going through the router through Comcast is when I had the problem. So it is probably something with the router, but it is hard to figure out since CentOS 4.5 and Fedora do not exhibit this behavior, nor does 5.4 on most sites (mail.yahoo.com for instance). I did verify, at least from what I could, that ICMP type 3 and 4 are not being blocked. If they were, the same problem would happen on other op systems. And I was able to ping, albeit just locally, but we looked at the router settings and ping was not blocked. Anyone else have this problem / know what might be wrong?

3 2

everything seems to hang, but system is idle?
by Rudi Ahlers 12 Apr '10

12 Apr '10

Hi All, My one server recently started acting very weird. At fist I couldn't import any images with cobbler as rsync crashes the whole time. I was told to ask on the cobbler list (maybe it's not supported here?) but I left it at that (subscribed to far too many lists already). Yesteday I wanted to copy some stuff from a USB disk to the server (using rsync to update the files which have changed, or new files) but it seems like rsync hangs without any errors. Now, when I tried to update CentOS I get the same "error" in that yum hangs. At the same time I can open a new SSH session and do whatevery I like. But it seems that running a command which takes time to complete hangs. For example: ==================================================================================================================================================== Package Arch Version Repository Size ===================================================================================================================================================== Removing: iscsi-initiator-utils x86_64 6.2.0.871-0.12.el5_4.1 installed 1.9 M Removing for dependencies: gnome-applet-vm x86_64 0.1.2-1.el5 installed 121 k libvirt x86_64 0.6.3-20.1.el5_4 installed 7.1 M libvirt-python x86_64 0.6.3-20.1.el5_4 installed 431 k python-virtinst noarch 0.400.3-5.el5 installed 1.4 M virt-manager x86_64 0.6.1-8.el5 installed 4.9 M virt-viewer x86_64 0.0.2-3.el5 installed 48 k xen x86_64 3.0.3-94.el5_4.3 installed 4.7 M Transaction Summary ===================================================================================================================================================== Remove 8 Package(s) Reinstall 0 Package(s) Downgrade 0 Package(s) Is this ok [y/N]: y Downloading Packages: Running rpm_check_debug Running Transaction Test [root@intranet Torrents]# mount /dev/sdc1 /mnt/ Even running "top" does the same, yet I can't kill "top" with CTRL+C, or even "killall -9 top" from a new SSH session. [root@intranet ~]# ps ax | grep top 20825 pts/6 R+ 0:00 grep top [root@intranet ~]# ps ax | grep rsync 6536 ? D 3:10 rsync -avz --progress /mnt/usb-backup/backups/current/home/www/linux/centos /home/www/linux/ 6537 ? Z 0:00 [rsync] <defunct> 8630 ? S 0:00 rsync -avz --progress --stats /mnt/usb-backup/backups/current/home/www/linux/ /home/www/linux/ 8631 ? Z 0:00 [rsync] <defunct> 20827 pts/6 R+ 0:00 grep rsync [root@intranet ~]# ps ax | grep yum 20390 pts/4 S+ 0:02 /usr/bin/python /usr/bin/yum remove iscsi-initiator-utils 20829 pts/6 R+ 0:00 grep yum [root@intranet ~]# /var/log/messages doesn't show me any errors. Any suggestions on this? -- 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 11

NAT/DHCP/DNS/etc Settings from a Windows 2003 Server
by David Lemcoe 12 Apr '10

12 Apr '10

Hello all. I'm in the process of making a small server farm based mostly on Windows Server 2003. For simplicity's sake, the only non-2003 server will be a CentOS 5.4 server running only vsftpd, httpd, and mysqld. My plan is to have this server in a 2003 Server's network receiving a DHCP address from the Domain Controller. Currently, I have two other (non-DC) servers running with no issues on the domain. NAT works as it should, and internet access is just fine. The CentOS box on the same network will not receive an IP address (only through static configuration, the non-DC 2003 boxes have no problem receiving an IP and DNS settings with auto settings) or get online. Even when defining a static IP on the CentOS box, there is no Internet access, unlike to the other clients. My question is, what could be restricting the DHCP and DNS information to the CentOS host, and why can't I access the internet/NAT forward a web server? To summarize, I have four machines involved, all located on the same network: - Machine 1 - Windows Server 2003 Enterprise - Domain Controller, DHCP server, DNS server, NAT server. - Machine 2 - Windows Server 2003 Enterprise - Domain member, Exchange server. - Receives DHCP and DNS information with automatic network settings. - Has internet access through NAT. - NAT forwards ports to this host. - Machine 3 - Windows Server 2003 Enterprise - Domain member, Sharepoint Server. - Receives DHCP and DNS information with automatic network settings. - Has internet access through NAT. - NAT forwards ports to this host. - *Machine 4* - CentOS 5.4 - On same network as other clients, hosts web server. - Does *NOT *receive DHCP address or DNS information. - Has *no *internet access - NAT does *NOT *forward correctly. I am looking for a solution to get the CentOS server on the network like the other clients. Any assistance on this problem would be greatly appreciated. David

8 10

Hosting Reco
by Joseph L. Casale 12 Apr '10

12 Apr '10

I have two needs that require offsite hosting now, anyone know offhand of any of the unlimited storage/bandwidth vendors that exist now that allow remote scp|rsync access to the data, not just "in shell scp use"? I'm hunting around and its apparently hard to get a straight answer... vps or dedicated is overkill for this one need, and none of those offerings have the storage/bandwidth of the hosting only solutions. Thanks! jlc

2 1

(no subject)
by Les Mikesell 11 Apr '10

11 Apr '10

http://NikoleLilly8355.co.cc

1 0

ulimit
by Matt 11 Apr '10

11 Apr '10

I need to to change the ulimit to 16384(ulimit -n 16384) on boot on Centos 5.4 64 bit. How do I do that? Been searching and have yet to find a good answer. Tried to do it in rc.local but it appears to happen to late there. Matt

4 7

(no subject)
by Les Mikesell 11 Apr '10

11 Apr '10

http://EleaseDusen2292.co.cc

7 7

pkcs11-helper-devel is needed
by cahit Eyigünlü 10 Apr '10

10 Apr '10

how could i install pkcs11 on 64 cent os 5.4 :S it always asking me for pkcs11-helper but i've already installing [root@vpn VpnSetup]# rpmbuild -tb openvpn-2.1.1.tar.gz hata: Failed build dependencies: pkcs11-helper-devel is needed by openvpn-2.1.1-1.x86_64 [root@vpn VpnSetup]# rpm -ivh pkcs11-helper-devel-1.06-2.1.x86_64.rpm uyarÄ±: pkcs11-helper-devel-1.06-2.1.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 849bf240 hata: Failed dependencies: pkcs11-helper = 1.06 is needed by pkcs11-helper-devel-1.06-2.1.x86_64 libopenssl-devel is needed by pkcs11-helper-devel-1.06-2.1.x86_64 [root@vpn VpnSetup]# rpm -ivh pkcs11-helper-1.07-5.3.src.rpm uyarÄ±: pkcs11-helper-1.07-5.3.src.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 3dbdc284 1:pkcs11-helper ########################################### [100%] [root@vpn VpnSetup]# rpm -ivh pkcs11-helper-devel-1.06-2.1.x86_64.rpm uyarÄ±: pkcs11-helper-devel-1.06-2.1.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 849bf240 hata: Failed dependencies: pkcs11-helper = 1.06 is needed by pkcs11-helper-devel-1.06-2.1.x86_64 libopenssl-devel is needed by pkcs11-helper-devel-1.06-2.1.x86_64

5 10

is skype using encryption?
by Jozsi Vadkan 10 Apr '10

10 Apr '10

Can someone [same subnet, e.g.: with a hub, not switch..] sniff my skype password when i'm using Skype? Is it encrypted? Thank you for the info

2 2

VPN
by cahit Eyigünlü 10 Apr '10

10 Apr '10

is there any possibility to do this on cent os for example company one will be in the block of 10.0.0.0.1-10.0.0.255 and routed to the one of my external ip company two will be in the block of 11.0.0.0.1-11.0.0.255 and routed to the one of my external ip i just need an advice is this better on windows vpn or llinux vpn server do you advice me any server software like open vpn or sth. else thank you very much i am glad for all your help i will rent a new server after complete a working system on virtual machine thanks ..

5 13

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