Discuss July 2010

discuss@lists.centos.org

242 participants
193 discussions

DHCPD
by tony.chamberlain＠lemko.com 30 Jul '10

30 Jul '10

Not sure if there is a DHCPD/PXE forum so I will ask here. I have been trying to get netboot to work (i.e. a machine with nothing on it but a NIC card, no linux, no operating system, whatever) boots up and receives a file from a dhcp server. This dhcp server gives it all the Linux stuff it needs so a full install can be done over the network. I actually got this working by turning my desktop into a DHCP server and placing the Linux images. My problem? Now everyone, especially with windows machines, is complaining that their machine keeps telling them "unknown network" and "no internet connection". Oops, my DHCP server was intercepting all the other DHCP requests normally for our actual router (192.168.5.1). I can get around this by unplugging my machine from the LAN and just having it on a very small network with only two IPS (my desktop DHCP server and the machine doing the boot). However, I would rather stay connected to the LAN especially if I have to go out over it to get an install package (like DDD). Can I somehow tell my desktop only to handle PXE requests and anything else should go to 192.168.5.1? Couple minor questions but I can save time asking here too: I can't figure out the correct "option" or keyword to assign host name via DHCP. Is there a way I can have a user choose whether to install 4.5 or 5.4 (CentOS) via boot? I put multiple choices into the C0 file but it ignored all but one.

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Samba PDC + BDC using LDAP
by Basil Kurian 30 Jul '10

30 Jul '10

I am trying to implement Samba Domain Controller with replication using LDAP . My intention is to create two Samba DC servers with LDAP backend , then to set one as master and other as slave , then replicate LDAP database in master to slave I shutdown second samba server and only first samba DC was running . Then I added one XP client to first samba server , I can successfully logged in to the domain Then I shutdown first server and started second server (every settings in first and second server is same . Also the ID is set to same value using * setlocalid* command ) but the xp can't login to the domain .. please help me to figure out the problem I documented every thing in a wiki ....... please go through the steps ......... http://wiki.basil-kurian.co.cc/index.php/SMB_DC_WITH_REPLICATION

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mdstat and /dev/mapper
by Jerry Geis 30 Jul '10

30 Jul '10

hi all, In the past I used software RAID-1 and monitored /proc/mdstat to make sure things were ok in the array. I am starting to play with /dev/mapper and was wondering how I monitor this for a disk going bad. Thanks, Jerry

2 1

DHCP failover ... Some questions.
by Götz Reinicke - IT-Koordinator 30 Jul '10

30 Jul '10

Hi, I plan to reorganise our IP management and I'd like to implement a slave DHCP server. Right now we assign IP addresses based on the ethernetadress of a client 1:1. The tutorial here [1] is simple and looks like the thing I need. I do have a lot of subnetworks and my cisco router has an DHCP helper address set. I know I'll have to add the second dhcp-server address. My questions now is: Dose the dhcp-slave syncs the dhcp data from the master? Or do I have to copy the data to the master AND slave? Any other sugesstions or comments? Thanks and best regards, Götz [1] http://www.howtoforge.com/how-to-set-up-dhcp-failover-on-centos5.1 -- 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 Geschäftsführer: Prof. Thomas Schadt

4 9

Postfix SMTP auto on remote relay server
by Rudi Ahlers 30 Jul '10

30 Jul '10

Hi, Does anyone know how to configure Postfix to use SMTP authentication on a relay host? i.e. I have a Linux server, running PostFix on an ADSL line with a dynamic IP. Thus I can't just send out emails from this server but need to relay it via our ISP's SMTP server, which is very unreliable. Now I want to relay the email via another SMTP server where a user account with the same domain has already been setup, but I got no idea how to get it to work on SMTP authenticiaion. Any suggestions? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

2 1

[CORRECTED] Postfix SMTP authentication on remote relay serve
by Rudi Ahlers 30 Jul '10

30 Jul '10

Sorry about the previous post, I see the subject had a typo. So here's the correct one :) Does anyone know how to configure Postfix to use SMTP authentication on a relay host? i.e. I have a Linux server, running PostFix on an ADSL line with a dynamic IP. Thus I can't just send out emails from this server but need to relay it via our ISP's SMTP server, which is very unreliable. Now I want to relay the email via another SMTP, running cPanel server where a user account with the same domain has already been setup, but I got no idea how to get it to work on SMTP authenticiaion. Any suggestions? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

3 2

Wifi not working
by Phil Savoie 30 Jul '10

30 Jul '10

Hello, I have the AR9285 wireless adaptor on an HP DV6-2128ca notebook. I can see it. it comes up in NetworkManager but never gets an IP. the router is a linksys using WPA/PSK security. Would/could someone please help me out trying to get this to work? Output of several commands follows: dmesg: ath: EEPROM regdomain: 0x69 ath: EEPROM indicates we should expect a direct regpair map ath: Country alpha2 being used: 00 ath: Regpair used: 0x69 phy0: Selected rate control algorithm 'ath9k_rate_control' Registered led device: ath9k-phy0::radio Registered led device: ath9k-phy0::assoc Registered led device: ath9k-phy0::tx Registered led device: ath9k-phy0::rx phy0: Atheros AR9285 MAC/BB Rev:2 AR5133 RF Rev:e0: mem=0xf8bc0000, irq=185 cat /etc/modprobe.conf: alias wlan0 ath9k tail /var/log/messages: Jul 27 19:31:02 smurf3 NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP Configure Timeout) complete. Jul 27 19:31:02 smurf3 NetworkManager: <info> (wlan0): device state change: 9 -> 3 Jul 27 19:31:02 smurf3 NetworkManager: <info> (wlan0): deactivating device (reason: 0). Jul 27 19:31:24 smurf3 NetworkManager: <info> Activation (wlan0) starting connection 'Auto pszone' Jul 27 19:31:24 smurf3 NetworkManager: <info> (wlan0): device state change: 3 -> 4 Jul 27 19:31:24 smurf3 NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled... Jul 27 19:31:24 smurf3 NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started... Jul 27 19:31:24 smurf3 NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled... Jul 27 19:31:24 smurf3 NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete. Jul 27 19:31:24 smurf3 NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting... Jul 27 19:31:24 smurf3 NetworkManager: <info> (wlan0): device state change: 4 -> 5 Jul 27 19:31:24 smurf3 NetworkManager: <info> Activation (wlan0/wireless): access point 'Auto pszone' has security, but secrets are required. Jul 27 19:31:24 smurf3 NetworkManager: <info> (wlan0): device state change: 5 -> 6 Jul 27 19:31:24 smurf3 NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete. Jul 27 19:31:31 smurf3 NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled... Jul 27 19:31:31 smurf3 NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started... Jul 27 19:31:31 smurf3 NetworkManager: <info> (wlan0): device state change: 6 -> 4 Jul 27 19:31:31 smurf3 NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled... Jul 27 19:31:31 smurf3 NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete. Jul 27 19:31:31 smurf3 NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting... Jul 27 19:31:31 smurf3 NetworkManager: <info> (wlan0): device state change: 4 -> 5 Jul 27 19:31:31 smurf3 NetworkManager: <info> Activation (wlan0/wireless): connection 'Auto pszone' has security, and secrets exist. No new secrets needed. Jul 27 19:31:31 smurf3 NetworkManager: <info> Config: added 'ssid' value 'pszone' Jul 27 19:31:31 smurf3 NetworkManager: <info> Config: added 'scan_ssid' value '1' Jul 27 19:31:31 smurf3 NetworkManager: <info> Config: added 'key_mgmt' value 'WPA-PSK' Jul 27 19:31:31 smurf3 NetworkManager: <info> Config: added 'psk' value '<omitted>' Jul 27 19:31:31 smurf3 NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete. Jul 27 19:31:31 smurf3 NetworkManager: <info> Config: set interface ap_scan to 1 Jul 27 19:31:31 smurf3 NetworkManager: <info> (wlan0): supplicant connection state: disconnected -> scanning Jul 27 19:31:38 smurf3 NetworkManager: <info> (wlan0): supplicant connection state: scanning -> associating Jul 27 19:31:38 smurf3 NetworkManager: <info> (wlan0): supplicant connection state: associating -> associated Jul 27 19:31:38 smurf3 NetworkManager: <info> (wlan0): supplicant connection state: associated -> 4-way handshake Jul 27 19:31:38 smurf3 NetworkManager: <info> (wlan0): supplicant connection state: 4-way handshake -> group handshake Jul 27 19:31:38 smurf3 NetworkManager: <info> (wlan0): supplicant connection state: group handshake -> completed Jul 27 19:31:38 smurf3 NetworkManager: <info> Activation (wlan0/wireless) Stage 2 of 5 (Device Configure) successful. Connected to wireless network 'pszone'. Jul 27 19:31:38 smurf3 NetworkManager: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) scheduled. Jul 27 19:31:38 smurf3 NetworkManager: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) started... Jul 27 19:31:38 smurf3 NetworkManager: <info> (wlan0): device state change: 5 -> 7 Jul 27 19:31:38 smurf3 NetworkManager: <info> Activation (wlan0) Beginning DHCP transaction. Jul 27 19:31:38 smurf3 dhclient: Internet Systems Consortium DHCP Client V3.0.5-RedHat Jul 27 19:31:38 smurf3 dhclient: Copyright 2004-2006 Internet Systems Consortium. Jul 27 19:31:38 smurf3 dhclient: All rights reserved. Jul 27 19:31:38 smurf3 dhclient: For info, please visit http://www.isc.org/sw/dhcp/ Jul 27 19:31:38 smurf3 dhclient: Jul 27 19:31:38 smurf3 NetworkManager: <info> dhclient started with pid 30770 Jul 27 19:31:38 smurf3 NetworkManager: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) complete. Jul 27 19:31:38 smurf3 NetworkManager: <info> DHCP: device wlan0 state changed normal exit -> preinit Jul 27 19:31:38 smurf3 dhclient: Listening on LPF/wlan0/c4:17:fe:bb:6a:df Jul 27 19:31:38 smurf3 dhclient: Sending on LPF/wlan0/c4:17:fe:bb:6a:df Jul 27 19:31:38 smurf3 dhclient: Sending on Socket/fallback Jul 27 19:31:38 smurf3 dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 4 Jul 27 19:31:42 smurf3 dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 11 Jul 27 19:31:53 smurf3 dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 14 Jul 27 19:32:07 smurf3 dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 20 Jul 27 19:32:23 smurf3 NetworkManager: <info> Device 'wlan0' DHCP transaction took too long (>45s), stopping it. Jul 27 19:32:23 smurf3 NetworkManager: <info> wlan0: canceled DHCP transaction, dhcp client pid 30770 Jul 27 19:32:23 smurf3 NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP Configure Timeout) scheduled... Jul 27 19:32:23 smurf3 NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP Configure Timeout) started... Jul 27 19:32:23 smurf3 NetworkManager: <info> (wlan0): device state change: 7 -> 9 Jul 27 19:32:23 smurf3 NetworkManager: <info> Activation (wlan0) failed for access point (pszone) Jul 27 19:32:23 smurf3 NetworkManager: <info> Marking connection 'Auto pszone' invalid. Jul 27 19:32:23 smurf3 NetworkManager: <info> Activation (wlan0) failed. Jul 27 19:32:23 smurf3 NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP Configure Timeout) complete. Jul 27 19:32:23 smurf3 NetworkManager: <info> (wlan0): device state change: 9 -> 3 Jul 27 19:32:23 smurf3 NetworkManager: <info> (wlan0): deactivating device (reason: 0) Thank you, Phil

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Hardware freezes on Dell Optiplex 320 while booting (https://bugzilla.redhat.com/show_bug.cgi?id=499204)
by Jason Pyeron 30 Jul '10

30 Jul '10

Steps tried: Install from centos 5.5 x86_64 disc, locks up after reboot at GRUB (FAILS) Boot centos 5.5 x86_64 install drop to shell and chroot (WORKS) Boot fedora 13 isolinux disc, choose boot hard disk, launches centos 5.5 grub (WORKS) Compiled and installed grub package from fedora 13 on centos 5.5 x86_64 same problem. (FAILS) Boot fedora 13 isolinux disc, choose boot hard disk, launches newer grub installed on centos (WORKS) Installed fedora 13 x86_64 default settings for disk layout. (WORKS) https://bugzilla.redhat.com/show_bug.cgi?id=499204 Looking for advice on getting this hardware to boot unattended. -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Principal Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - - - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This message is copyright PD Inc, subject to license 20080407P00.

6 16

Server rebooted, log message "kernel: Keepalive, Event:mdseve_cookie, client ping timeout"
by Aleksey Tsalolikhin 30 Jul '10

30 Jul '10

Hi. Our CentOS 5.4 server just rebooted sponteneously while doing heavy I/O. There is a message in /var/log/messages just prior to reboot, kernel: Keepalive, Event:mdseve_cookie, client ping timeout Google does not turn up anything. What does this mean and how can I prevent it from happening again, please? Best, -at

1 2

Centos5.5 cannot boot
by cjzjm100 29 Jul '10

29 Jul '10

Hi,everybody! When the system boot,there is a problem: /etc/rc.d/init.d/functions:line 19 /sbin/consoletype:cannot execute binary file /etc/profile.d/lang.sh:line 46: /sbin/consoletype:cannot execute binary file it cannot boot! How can i fix it?

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Discuss July 2010