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netinstlal question
by William Warren 31 Aug '10

31 Aug '10

my church just got some ibm x335's donated. Cent 5 is only relaly dvd's. I do have a windows server using IIS for internal stuff. How would i setup a local repo for the dvd so i can point the net install iso to the windows box?

3 2

OT: redhat training and RHES6
by Monty Shinn 31 Aug '10

31 Aug '10

Greetings. I am planning on getting my RHCE in the near future. I thinking I should wait until 6 comes out before proceeding. That being said, I don't want to wait past the end of this year. That being said, do you all have any information about how long it takes for their training platform to catch up to their release? Which is to say, if RHES 6 is released on day 1, at what point will they start training on RHES6? I'm asking here instead of RH since I want real-world answers, not the company line. Any thoughts are greatly appreciated. TIA, Monty

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Partitioning production server
by admin lewis 31 Aug '10

31 Aug '10

Hi, I have to install a production server with postgresql.. with few hundreds of MB (2-300) would u advice me to partitioning the disk ? The server will be under vmware environment with SAN as storage. -- -- Lewis

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OpenVPN throughput
by Boris Epstein 31 Aug '10

31 Aug '10

Hello listmates, We are working on setting up two private networks linked by a public network which is fast (1 Gbit/s) but potentially insecure. Since the hosts on our two networks need to talk to each other, and do so securely, we have decided to use OpenVPN to connect them, making one gateway a server and the other a client. The connectivity part was easy to establish and worked like a charm. The only problem was, and is, performance. We have two old PIII-class machines that are being tested for the role of the gateways. We have put new 1 Gbit NIC's in them and they work find for everything (data transmission, DHCP, DNS, routing) except the VPN. When traffic goes through the VPN the OpenVPN process goes to 99% CPU on the server, about 70% CPU on the client and the effective transmission rate goes down to about 6 MB/s whereas in non-VPN mode it can be as high as 50+ MB/s (the top for the 1 Gbit/s is, obviously, 125 MB/s hence with the VPN we are down to about 5% of the capacity). While this may be usable we would like to hope we can do better. Hence the following questions: 1) Have you used OpenVPN in a similar setup? 2) If so what sort of performance did you see? 3) What kind of equipment did you use? Personally, I'd like to hope that if we find VPN-enabled gateways with more processing power we'd get drastically better performance. So if you have data to confirm or deny that please share it. Thanks. Boris.

12 20

Re: [CentOS] OpenVPN throughput
by J.Witvliet＠mindef.nl 30 Aug '10

30 Aug '10

See below... -----Original Message----- From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf Of Gordon Messmer Sent: Saturday, August 21, 2010 12:03 AM To: CentOS mailing list Subject: Re: [CentOS] OpenVPN throughput On 08/20/2010 10:19 AM, Bill Campbell wrote: > > Comparisons with gigabit networks seems a pointless given that most > VPNs will be used over the Internet which limits bandwidth, how fast > is fast enough? Boris said in his first email that the link between the two networks was 1 Gps. _______________________________________________ Perhaps a bit late on this thread, but i thought of adding my $0.02 ... Last year i've been doing some experiments with openvpn. Just as the O.P. I was curious about sustainable throughput, and was disapointed about the results To obtain maximum resulst, i did: - use two rather heavy machines (HP DL380-G6, dual quad core) - two dedicated 10Gb-nic's - cross-connect both nics - DISABLE openvpn-debug (as it is VERY cpu expensive) - raise MTU to 4K Bottleneck was (in my case) the openvpn-process, that was running 100% on a single core, While network was not saturated. So for max throughput, it is probably strongswan (ipsec) or hw-encryption [or both] hw ______________________________________________________________________ Dit bericht kan informatie bevatten die niet voor u is bestemd. Indien u niet de geadresseerde bent of dit bericht abusievelijk aan u is toegezonden, wordt u verzocht dat aan de afzender te melden en het bericht te verwijderen. De Staat aanvaardt geen aansprakelijkheid voor schade, van welke aard ook, die verband houdt met risico's verbonden aan het elektronisch verzenden van berichten. This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. The State accepts no liability for damage of any kind resulting from the risks inherent in the electronic transmission of messages.

4 4

pam changes - service restart reqd?
by Carlos S 30 Aug '10

30 Aug '10

Howdy, Do we need to restart any service after making changed to pam modules? I have changed system-auth config, but not sure if I need to restart any service after making changes, e.g. ssh which uses pam. Any help? -- Thanks, CS.

4 6

kvm boot options
by Jerry Geis 30 Aug '10

30 Aug '10

I am trying to use -boot order=dc,once=d for kvm. It did not seem to work as it booted from CDROM (d) the second time around and was wanting to re-install centos again. 1st boot installs centos and auto reboots 2nd boot then begins OTHER things to do. Did I not have the command options correct above? Jerry

1 0

Freezing gnome terminals...
by John Doe 30 Aug '10

30 Aug '10

Hi, just wondering if you also experience gnome terminals freezing after a while...? It mainly happens over the week-end. I would leave a terminal open (with an ssh session to a remote site), come back on monday and type a few commands and it jwould just freeze. But it also happen from time to time randomly during the day (but still with days old terminals). Happens to my collegues too. The Gnome terminal Reset option would not do anything. any idea what could be the problem? Thx, JD

4 5

Web VNC Tool
by sync 30 Aug '10

30 Aug '10

Hi , guys: I have a thought of installing the web vnc tool for controling the vnc state . That is to say , If I use the firefox or IE browser to access this example website : http://test.com.cn; then I can see the all users' vnc state and I can stop or restart them . Could someone give me some suggestions? Thanks in advance ....

1 0

why flash the terminal interface when loading the linux system?
by ganu MailList 29 Aug '10

29 Aug '10

I had set the initdefault as 5

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