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using true UTC timezone everywhere
by Florin Andrei 10 Mar '07

10 Mar '07

One problem with the daylight savings is that they mess with reporting tools that use timestamps. I guess an application could be configured to log UTC instead of local time, but that's not always doable. Also, if you have servers in several different timezones, it's better if all systems follow the same clock. So, I'm thinking it's perhaps better if I just use ZONE="UTC" on all systems. These are the steps I can think of so far: - make sure the BIOS clock is set to UTC - run timeconfig and make sure "System Clock uses UTC" is checked - cp /usr/share/zoneinfo/UTC /etc/localtime - edit /etc/sysconfig/clock and set ZONE="UTC" - reboot Voila - instant UTC clock. Never need to worry about daylight savings again. Anybody can think of any problems with: - the procedure I described? - the simple fact of using the "true" UTC timezone? -- Florin Andrei http://florin.myip.org/

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rsh with passwords
by Florin Andrei 10 Mar '07

10 Mar '07

I am doing rsync over a private network. Encryption is not required. Currently rsync over ssh works, but requires too many CPU cycles (especially when doing a lot of transfers) on a CPU-bound system. I need to use rsh instead. The problem is, I can either set rsh to allow transfers without a password, or it won't let me transfer files at all. I need rsh to ask for a password. The network may be private (I don't worry about sniffers) but still I'm not OK with giving the rsync client a blank check and allow it to connect without a password. I tried to make various modifications to /etc/pam.d/rsh but I can't convince rshd to require a password. I searched the Web for a solution, but everyone seems to be in the opposite situation (looking to allow rsh to connect without a password, which is trivial). Any suggestion? -- Florin Andrei http://florin.myip.org/

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Re: [users] Mrepo (with Redhat) works on one but not the other?
by Camron W. Fox 10 Mar '07

10 Mar '07

Matt Hyclak wrote: > On Fri, Mar 09, 2007 at 01:59:08PM -1000, Camron W. Fox enlightened us: >> Jim Perrin wrote: >>> On 3/9/07, Camron W. Fox <cwfox(a)us.fujitsu.com> wrote: >>> >>> <snip> >>> >>>> rhnget: "Unknown error that needs more debugging occured with channel >>>> rhel-x86_64-es-4-extras. Skipping.\n'up2date'" >>>> mrepo: Mirroring failed for rhns:///rhel-x86_64-es-4-extras with message: >>>> >>> Look at url string, rhns:/// >>> >>> I don't think that looks right. You might wish to check the >>> corresponding versions of all software involved. I'm not 100% where >>> it's pulling that value, but it may give you a place to start looking. >>> >>> >> Jim, >> >> It's straight out of /etc/mrepo.conf.d/rhel4es.conf, which is the >> same on both boxes: >> > > What version of mrepo? There was a problem at one time where rhns:/// > evaluated to something that came from the up2date configuration, which on a > CentOS box was not a redhat rhn server (go figure...). > > You might check that, as well as making sure the the line > > up2date default > > is uncommented in /etc/sysconfig/rhn/sources > > It is commented by default on CentOS boxes and is required for mrepo to work. > > Matt > Matt, D'Oh!!! I forgot to uncomment the "up2date default" line in /etc/sysconfig/rhn/sources! Thanks for showing me the obvious. Best Regards, Camron Camron W. Fox Hilo Office High Performance Computing Group Fujitsu America, INC. E-mail: cwfox(a)us.fujitsu.com

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Performance problem with CentOS and XFS on EMC
by Mark Hull-Richter 10 Mar '07

10 Mar '07

We have an appliance that uses the CentOS 4.4 Plus kernel with XFS on an EMC RAID array that performs about ¼ or less as well with cached i/o than with direct i/o. With direct i/o we get about 32Mb/s throughput or better, but if we enable the cache for the EMC RAID, we only get 8Mb/s or less. This doesn't happen if we use JFS, where we get a little less than 32Mb/s throughput with or without cache enabled, on the same hardware and CentOS, but there are some features in XFS that we use that are not available in JFS.. Any thoughts on this? Thanks.

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Wireless fails with Netgear MA401 card.
by Camron W. Fox 09 Mar '07

09 Mar '07

Alle, I have recently installed CentOS4.4 on an old Fujitsu E7110 laptop. I'm trying to get a Netgear MA401 card installed for wireless access but when I configure the card and start the network I get: Mar 9 09:03:20 localhost network: Setting network parameters: succeeded Mar 9 09:03:20 localhost kernel: ip_tables: (C) 2000-2002 Netfilter core team Mar 9 09:03:20 localhost network: Bringing up loopback interface: succeeded Mar 9 09:03:20 localhost kernel: hermes @ IO 0x100: Error -16 issuing command. Mar 9 09:03:20 localhost last message repeated 7 times Mar 9 09:03:20 localhost ifup: Error for wireless request "Set Mode" (8B06) : Mar 9 09:03:20 localhost ifup: SET failed on device eth1 ; Invalid argument. Mar 9 09:03:20 localhost kernel: hermes @ IO 0x100: Error -16 issuing command. Mar 9 09:03:20 localhost kernel: hermes @ IO 0x100: Error -16 issuing command. Mar 9 09:03:20 localhost ifup: Error for wireless request "Set Frequency" (8B04) : Mar 9 09:03:20 localhost ifup: SET failed on device eth1 ; Operation not supported. Mar 9 09:03:20 localhost kernel: hermes @ IO 0x100: Error -16 issuing command. Mar 9 09:03:20 localhost kernel: hermes @ IO 0x100: Error -16 issuing command. Mar 9 09:03:20 localhost kernel: ip_tables: (C) 2000-2002 Netfilter core team Mar 9 09:03:21 localhost ifup: Mar 9 09:03:21 localhost ifup: Determining IP information for eth1... Mar 9 09:03:21 localhost kernel: eth1: Error -110 setting MAC address Mar 9 09:03:21 localhost kernel: eth1: Error -110 configuring card Mar 9 09:03:21 localhost kernel: eth1: Error -110 setting MAC address Mar 9 09:03:21 localhost kernel: eth1: Error -110 configuring card Mar 9 09:03:21 localhost ifup: SIOCSIFFLAGS: Connection timed out Mar 9 09:03:21 localhost kernel: eth1: Error -110 setting MAC address Mar 9 09:03:21 localhost kernel: eth1: Error -110 configuring card Mar 9 09:03:21 localhost ifup: SIOCSIFFLAGS: Connection timed out Mar 9 09:03:21 localhost dhclient: DHCPREQUEST on eth1 to 255.255.255.255 port 67 Mar 9 09:03:21 localhost dhclient: send_packet: Network is down Mar 9 09:03:21 localhost dhclient: receive_packet failed on eth1: Network is down Mar 9 09:03:25 localhost dhclient: DHCPREQUEST on eth1 to 255.255.255.255 port 67 Mar 9 09:03:25 localhost dhclient: send_packet: Network is down Mar 9 09:03:32 localhost dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 5 Mar 9 09:03:32 localhost dhclient: send_packet: Network is down Mar 9 09:03:37 localhost dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 10 Mar 9 09:03:37 localhost dhclient: send_packet: Network is down Mar 9 09:03:47 localhost dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 11 Mar 9 09:03:47 localhost dhclient: send_packet: Network is down Mar 9 09:03:58 localhost dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 17 Mar 9 09:03:58 localhost dhclient: send_packet: Network is down Mar 9 09:04:15 localhost dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 10 Mar 9 09:04:15 localhost dhclient: send_packet: Network is down Mar 9 09:04:25 localhost dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 8 Mar 9 09:04:25 localhost dhclient: send_packet: Network is down Mar 9 09:04:33 localhost dhclient: No DHCPOFFERS received. Mar 9 09:04:33 localhost dhclient: Trying recorded lease 10.157.249.4 Mar 9 09:04:33 localhost kernel: eth1: Error -110 setting MAC address Mar 9 09:04:33 localhost kernel: eth1: Error -110 configuring card Mar 9 09:04:33 localhost ifup: SIOCSIFFLAGS: Connection timed out Mar 9 09:04:36 localhost ifup: PING 10.157.249.254 (10.157.249.254) from 10.157.249.4 eth1: 56(84) bytes of data. Mar 9 09:04:36 localhost ifup: Mar 9 09:04:36 localhost ifup: --- 10.157.249.254 ping statistics --- Mar 9 09:04:36 localhost ifup: 4 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2999ms Mar 9 09:04:36 localhost ifup: , pipe 4 Mar 9 09:04:36 localhost ifup: SIOCSIFFLAGS: Connection timed out Mar 9 09:04:36 localhost kernel: eth1: Error -110 setting MAC address Mar 9 09:04:36 localhost kernel: eth1: Error -110 configuring card Mar 9 09:04:36 localhost ifup: failed. Mar 9 09:04:36 localhost network: Bringing up interface eth1: failed Anyone have any ideas? Best Regards, Camron -- Camron W. Fox Hilo Office High Performance Computing Group Fujitsu America, INC. E-mail: cwfox(a)us.fujitsu.com Phone: (808) 934-4102 Cell: (808) 937-5026

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Centos blocked
by Dago Pacheco 09 Mar '07

09 Mar '07

Hi I use to leave my PC turned on for a long time, but ultimately I've found it blocked. The mouse just don't work and the keyboard leds are blinking and there is no HD activity. I'd like to know which log should I check, to find the problem or what should I do. I u need more details, please just make know how to give'em. -- ________________________ Dago Pacheco Encargado de Informática Maetranza Makimet Ltda.

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Error on starting apache server
by Ern jura 09 Mar '07

09 Mar '07

I get the following error when starting the apache2 server, any ideas. ./httpd: error while loading shared libraries: libpq.so.4: cannot open shared object file: No such file or directory [root@localhost sbin]#

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Change of server
by Juca Pablo 09 Mar '07

09 Mar '07

Hello friends, I have a question for you, my server is in 4.4 (centos) and it is a Pentium III of 500 MHZ, it's a compaq proliant, now I want to change the dark disc of it to other, which is HP Pentium IV, is it possible that the change of server can be recognized by the Linux or I would have problems at the moment of it is started in the new server? Thanks and regards,

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Custom ananconda
by Tronn Wærdahl 09 Mar '07

09 Mar '07

Hello mail list Forgive me if i doble post, coz my first attetemt didnt go through Im trying to include a new selection in "Installation type" in the anaconda installer when installing Centos 4.3 I have successfull made a inclution of "my" rpms when installing the OS, by modifying the the base group in the file comps.xml But what im trying to do is make a new selection in the Installation window [where you choose Server, desktop, custom..] I need some guidance about this topic, any help would be appriciated Tronn

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autoLogin
by Ted Gervais 09 Mar '07

09 Mar '07

I just installed Centos (version 4.4) and wondering how I can change things so I don't have to login. I am aware of the security implications for doing this but I would prefer this if I can do it. I believe it has something to do with autologin and if so how is this configured ?? --- Ted Gervais, Coldbrook, Nova Scotia, Canada

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