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pam_access not working?
by Morten Kjeldgaard 30 Nov '06

30 Nov '06

Hi, I am having a strange problem, where I cannot get pam_access to work as intended. I have placed the following line in /etc/pam.d/system-auth account required /lib/security/pam_access.so Then, in /etc/security/access.conf, I have put the following line: -:mok:10.14.44.104 I.e. I should prevent myself from logging on from host 10.14.44.104. However, when I try to log on (using ssh) from the specified host, I get in without a problem. There is nothing in the logs. It does not help restarting sshd, or rebooting. It does not help putting "ALL" instead of the IP number. I happily get in... Another weird thing is that if I give the argument "debug" to pam_access.so -- as the manual says you can -- it does say something in the log, namely that "debug" is not a recognized option. The system is CentOS release 4.4. I hope someone on this list can offer a bit of advice! Cheers, Morten

3 6

Does kernel-devel need further configuration after yum install, for driver build ?
by MikeW 30 Nov '06

30 Nov '06

In order to build a kernel module outside of a kernel source tree, I understand it is necessary to set up a makefile containing lines such as ... obj-m:=driver.o ... and quote the KERNELDIR directory to the make system (e.g. see O'Reilly book on Linux device drivers) However, doing this with Centos either 'as-is', or even after doing a yum remove kernel-devel-<version> then yum upgrade kernel-devel, (to cause a reinstall of the latest version) leads to a series of error messages, e.g.: In file included from include/asm/smp.h:18, from include/linux/smp.h:96, from include/linux/sched.h:23, from include/linux/module.h:10, from /home/fred/appbuild/mydriver/mydriver.c:22: include/asm/mpspec.h:6:25: mach_mpspec.h: No such file or directory although I am not set up for SMP ! These errors are 'fixed' if I add to the make's CFLAGS, -I$(KERNELDIR)/include/asm-386/mach-default but I would guess that this should really happen by means of some symlink trickery, which was set up when the package gets installed. I do not think that everything else is correct if I do this ! Am I missing another installation step ? Thanks. MikeW

1 0

RE: [CentOS] Re: pptp server tutorial
by Bowie Bailey 30 Nov '06

30 Nov '06

Dustin Krysak wrote: > On 11/29/06, Alex Palenschat <alex(a)nssmgmt.com> wrote: > > > > > Thanks for hte info. I was hoping to avoid having patches and > > > kernel recompiles, but that might be my only way I can go. > > > > > > Thanks. It is appreciated. > > > > Time for the obligatory "why not use OpenVPN then?" post. It is in > > Dag's repository and is very straightforward to install and works > > well with NAT. There is a windows client with a GUI and it does not > > have the weakness of password based authentication. www.openvpn.org > > I will check it out! I just finished setting up an OpenVPN server on CentOS 4.4. It was really quite simple once I figured out the basics. The hardest part was configuring everything so that the remote computer could communicate with the rest of the network. There is some good information on the OpenVPN website. http://openvpn.net/howto.html -- Bowie

1 0

RE: [CentOS] Re: hostname setting
by Ian Anderson 30 Nov '06

30 Nov '06

/etc/sysconfig/network is what assigns the hostname to your particular server. This is also where CentOS writes the hostname when you initially install the OS. /etc/hosts provides a mechanism for mapping that hostname to an IP address. This is one of several ways to map ip's to hostnames. I use /etc/sysconfig/network to "name" my machines and then enter that value into /etc/hosts. i.e. /etc/sysconfig/network HOSTNAME="vpn-gateway" /etc/hosts 127.0.0.1 localhost localhost.localdomain 10.0.0.1 vpn-gateway vpn-gateway.mydomain.com the second entry is an "alias" to vpn-gateway. If you were to ping either one you would get a response from 10.0.0.1. There is an order of operations that CentOS uses to resolve host names. By default the first attempt is in the hosts file. If it doesn't find anything there is will try DNS, if nothing is there it will try WINS, and so on. If you have a DNS server in your network you could add a record to resolve vpn-gateway.mydomain.com to 10.0.0.1 and not fill in a /etc/hosts value at all. (Providing /etc/resolv.conf is setup to look at that DNS server) Someone correct me if I am wrong, but this is what I understand to be correct. -----Original Message----- From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf Of Scott Silva Sent: Wednesday, November 29, 2006 2:02 PM To: centos(a)centos.org Subject: [CentOS] Re: hostname setting MrKiwi spake the following on 11/29/2006 1:34 PM: > Can someone with far more knowledge than me help here? > > I have a co-worker with a question; > " > Where should i set the server's hostname? > There seems to be multiple places and i don't understand the differences. > 1. # hostname mailserver.mydomain.com > 2. # echo "127.0.0.1 mailserver mailserver.mydomain.com">>/etc/hosts > 3. # vi /etc/sysconfig/network, add "HOSTNAME=mailserver.mydomain.com" > > So far i think i understand that postfix likes to see the hostname in > the hosts file, but things i have read imply that postfix is pretty > clever at working it out from multiple places. > Apache also seems to be clever, but the conf file recommends that you > hard code the server name into the config. If you don't, where does > apache look? > If you set the hostname during an install, where is that written? > If i use method 1 above ("hostname mailserver.mydomain.com") i seem to > have to do that at every boot (or script it of course) whereas the edit > to /etc/hosts or /etc/sysconfig/network would survive restarts. > > I have read the information in "man hostname" and understand that > "hostname -f" gets its info from the hosts file, but where does the > function "gethostname" get its info from? > > Finally - which method do you all use to set you hostname? > " > > Thanks all, > > MrKiwi I have my hostname in both /etc/sysconfig/network and /etc/hosts. -- MailScanner is like deodorant... You hope everybody uses it, and you notice quickly if they don't!!!! _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

2 1

RE: [CentOS] Re: pptp server tutorial
by Alex Palenschat 30 Nov '06

30 Nov '06

> Thanks for hte info. I was hoping to avoid having patches and > kernel recompiles, but that might be my only way I can go. > > Thanks. It is appreciated. > > Time for the obligatory "why not use OpenVPN then?" post. It is in Dag's repository and is very straightforward to install and works well with NAT. There is a windows client with a GUI and it does not have the weakness of password based authentication. www.openvpn.org alex

3 2

dhcpd
by Daniel Teixeira 30 Nov '06

30 Nov '06

Hi im trying to configure centos to run as a dhcpd daemon but it simply doesnt work I'm using the default configuration file from dhcdp (and tried multiple alternatives). problem is that pxe clients do not aquire dhcp addresses in the log i can see that there are 3 or 4 dhcp offers per boot atempt but no dhcp requests anyone? i'm going crazy here... .i've tryed 3 diferent machines (servers) and 4 or 5 diferent clients sometimes windows clients are able to catch the ip but only sometimes. maybe this is a route problem? the machine(s) was freshly installed with centos 4.3 please advise!

6 9

SCSI drive offline
by guojinpeng(郭晋鹏) 30 Nov '06

30 Nov '06

I’m running centos 4.3 (2.6.9-22.ELsmp) on a box ,and running windows XP on vmware 5.5.1. I have 3 scsi disk on this server,sda for linux system,sdb for vmware disk,and sdc for other. Resently I found that something wrong with the second disk,the guest os windowsxp copying files from a samba server(another box) to it’s disk,and for some time,maybe 5hours,3or1hours, the kernel said that sdb is offline… then I reboot,everything is ok,no filesystem check. but this problem accours every a few hours when the windowsxp copying a lot of files to it’s disk. I’m not sure if it was the heavy load of the disk made this problem. then I run smartctl to see if it’s overheat,but result nothing,smartctl said the temperature is ok (27-29c). is it a hardware problem? cable? disk is dying? kernel problem?vmware problem? and here is the dmesg dump when this problem happening.. Nov 26 08:41:43 server kernel: device eth2 entered promiscuous mode Nov 26 08:41:43 server kernel: bridge-eth2: enabled promiscuous mode Nov 27 19:12:07 server kernel: scsi0:0:1:0: Attempting to abort cmd f7a97500: 0x2a 0x0 0xc 0x7b 0x41 0x30 0x0 0x0 0x68 0x0 Nov 27 19:12:07 server kernel: scsi0: At time of recovery, card was not paused Nov 27 19:12:07 server kernel: >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<< Nov 27 19:12:07 server kernel: scsi0: Dumping Card State at program address 0x26 Mode 0x22 Nov 27 19:12:07 server kernel: Card was paused Nov 27 19:12:07 server kernel: HS_MAILBOX[0x0] INTCTL[0x80] SEQINTSTAT[0x0] SAVED_MODE[0x11] Nov 27 19:12:07 server kernel: DFFSTAT[0x33] SCSISIGI[0x0] SCSIPHASE[0x0] SCSIBUS[0x0] Nov 27 19:12:07 server kernel: LASTPHASE[0x1] SCSISEQ0[0x0] SCSISEQ1[0x12] SEQCTL0[0x0] Nov 27 19:12:07 server kernel: SEQINTCTL[0x0] SEQ_FLAGS[0x0] SEQ_FLAGS2[0x0] SSTAT0[0x0] Nov 27 19:12:07 server kernel: SSTAT1[0x0] SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0] Nov 27 19:12:07 server kernel: SIMODE1[0xa4] LQISTAT0[0x0] LQISTAT1[0x0] LQISTAT2[0x0] Nov 27 19:12:07 server kernel: LQOSTAT0[0x0] LQOSTAT1[0x0] LQOSTAT2[0xe1] Nov 27 19:12:07 server kernel: Nov 27 19:12:58 server kernel: SCB Count = 12 CMDS_PENDING = 4 LASTSCB 0x6 CURRSCB 0x3 NEXTSCB 0xff40 Nov 27 19:12:58 server kernel: qinstart = 23816 qinfifonext = 23816 Nov 27 19:12:58 server kernel: QINFIFO: Nov 27 19:12:58 server kernel: WAITING_TID_QUEUES: Nov 27 19:12:58 server kernel: Pending list: Nov 27 19:12:58 server kernel: 9 FIFO_USE[0x0] SCB_CONTROL[0x60] SCB_SCSIID[0x17] Nov 27 19:12:58 server kernel: 0 FIFO_USE[0x0] SCB_CONTROL[0x60] SCB_SCSIID[0x17] Nov 27 19:12:58 server kernel: 7 FIFO_USE[0x0] SCB_CONTROL[0x60] SCB_SCSIID[0x17] Nov 27 19:12:58 server kernel: 5 FIFO_USE[0x0] SCB_CONTROL[0x60] SCB_SCSIID[0x17] Nov 27 19:12:58 server kernel: Total 4 Nov 27 19:12:58 server kernel: Kernel Free SCB list: 3 6 11 2 4 1 10 8 Nov 27 19:12:58 server kernel: Sequencer Complete DMA-inprog list: Nov 27 19:12:58 server kernel: Sequencer Complete list: Nov 27 19:12:58 server kernel: Sequencer DMA-Up and Complete list: Nov 27 19:12:58 server kernel: Nov 27 19:12:58 server kernel: scsi0: FIFO0 Free, LONGJMP == 0x8252, SCB 0x3 Nov 27 19:12:58 server kernel: SEQIMODE[0x3f] SEQINTSRC[0x0] DFCNTRL[0x4] DFSTATUS[0x89] Nov 27 19:12:58 server kernel: SG_CACHE_SHADOW[0x2] SG_STATE[0x0] DFFSXFRCTL[0x0] Nov 27 19:12:58 server kernel: SOFFCNT[0x0] MDFFSTAT[0x5] SHADDR = 0x00, SHCNT = 0x0 Nov 27 19:12:58 server kernel: HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10] Nov 27 19:12:58 server kernel: scsi0: FIFO1 Free, LONGJMP == 0x8063, SCB 0x3 Nov 27 19:12:58 server kernel: SEQIMODE[0x3f] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89] Nov 27 19:12:58 server kernel: SG_CACHE_SHADOW[0x2] SG_STATE[0x0] DFFSXFRCTL[0x0] Nov 27 19:12:58 server kernel: SOFFCNT[0x0] MDFFSTAT[0x5] SHADDR = 0x00, SHCNT = 0x0 Nov 27 19:12:58 server kernel: HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10] Nov 27 19:12:58 server kernel: LQIN: 0x8 0x0 0x0 0x3 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 Nov 27 19:12:58 server kernel: scsi0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x52 Nov 27 19:12:58 server kernel: scsi0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x1 Nov 27 19:12:58 server kernel: SIMODE0[0xc] Nov 27 19:12:58 server kernel: CCSCBCTL[0x0] Nov 27 19:12:58 server kernel: scsi0: REG0 == 0x3, SINDEX = 0x102, DINDEX = 0x102 Nov 27 19:12:58 server kernel: scsi0: SCBPTR == 0x3, SCB_NEXT == 0xff40, SCB_NEXT2 == 0xff86 Nov 27 19:12:58 server kernel: CDB 2a 0 1 80 8 6c Nov 27 19:12:58 server kernel: STACK: 0x14 0x0 0x0 0x0 0x0 0x0 0x0 0x0 Nov 27 19:12:58 server kernel: <<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>> Nov 27 19:12:58 server kernel: DevQ(0:0:0): 0 waiting Nov 27 19:12:58 server kernel: DevQ(0:1:0): 0 waiting Nov 27 19:12:58 server kernel: DevQ(0:2:0): 0 waiting Nov 27 19:12:58 server kernel: (scsi0:A:1:0): Device is disconnected, re-queuing SCB Nov 27 19:12:58 server kernel: Recovery code sleeping Nov 27 19:12:58 server kernel: (scsi0:A:1:0): Task Management Func 0x1 Complete Nov 27 19:12:58 server kernel: Recovery SCB completes Nov 27 19:12:58 server kernel: Recovery code awake Nov 27 19:12:58 server kernel: scsi0:0:1:0: Attempting to abort cmd f7a97500: 0x0 0x0 0x0 0x0 0x0 0x0 Nov 27 19:12:58 server kernel: scsi0: At time of recovery, card was not paused Nov 27 19:12:58 server kernel: >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<< Nov 27 19:12:58 server kernel: scsi0: Dumping Card State at program address 0x24 Mode 0x0 Nov 27 19:12:58 server kernel: Card was paused Nov 27 19:12:58 server kernel: HS_MAILBOX[0x0] INTCTL[0x80] SEQINTSTAT[0x0] SAVED_MODE[0x11] Nov 27 19:12:58 server kernel: DFFSTAT[0x33] SCSISIGI[0x0] SCSIPHASE[0x0] SCSIBUS[0x0] Nov 27 19:12:58 server kernel: LASTPHASE[0x1] SCSISEQ0[0x0] SCSISEQ1[0x12] SEQCTL0[0x0] Nov 27 19:12:58 server kernel: SEQINTCTL[0x0] SEQ_FLAGS[0x0] SEQ_FLAGS2[0x0] SSTAT0[0x0] Nov 27 19:12:58 server kernel: SSTAT1[0x8] SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0] Nov 27 19:12:58 server kernel: SIMODE1[0xa4] LQISTAT0[0x0] LQISTAT1[0x0] LQISTAT2[0x0] Nov 27 19:12:58 server kernel: LQOSTAT0[0x0] LQOSTAT1[0x0] LQOSTAT2[0xe1] Nov 27 19:12:58 server kernel: Nov 27 19:12:58 server kernel: SCB Count = 12 CMDS_PENDING = 4 LASTSCB 0x6 CURRSCB 0x5 NEXTSCB 0xffc0 Nov 27 19:12:58 server kernel: qinstart = 23818 qinfifonext = 23818 Nov 27 19:12:58 server kernel: QINFIFO: Nov 27 19:12:58 server kernel: WAITING_TID_QUEUES: Nov 27 19:12:58 server kernel: Pending list: Nov 27 19:12:58 server kernel: 5 FIFO_USE[0x0] SCB_CONTROL[0x60] SCB_SCSIID[0x17] Nov 27 19:12:58 server kernel: 9 FIFO_USE[0x0] SCB_CONTROL[0x60] SCB_SCSIID[0x17] Nov 27 19:12:58 server kernel: 0 FIFO_USE[0x0] SCB_CONTROL[0x60] SCB_SCSIID[0x17] Nov 27 19:12:58 server kernel: 7 FIFO_USE[0x0] SCB_CONTROL[0x60] SCB_SCSIID[0x17] Nov 27 19:12:58 server kernel: Total 4 Nov 27 19:12:58 server kernel: Kernel Free SCB list: 3 6 11 2 4 1 10 8 Nov 27 19:12:58 server kernel: Sequencer Complete DMA-inprog list: Nov 27 19:12:58 server kernel: Sequencer Complete list: Nov 27 19:12:58 server kernel: Sequencer DMA-Up and Complete list: Nov 27 19:12:58 server kernel: Nov 27 19:12:58 server kernel: scsi0: FIFO0 Free, LONGJMP == 0x8252, SCB 0x3 Nov 27 19:12:58 server kernel: SEQIMODE[0x3f] SEQINTSRC[0x0] DFCNTRL[0x4] DFSTATUS[0x89] Nov 27 19:12:58 server kernel: SG_CACHE_SHADOW[0x2] SG_STATE[0x0] DFFSXFRCTL[0x0] Nov 27 19:12:58 server kernel: SOFFCNT[0x0] MDFFSTAT[0x5] SHADDR = 0x00, SHCNT = 0x0 Nov 27 19:12:58 server kernel: HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10] Nov 27 19:12:58 server kernel: scsi0: FIFO1 Free, LONGJMP == 0x8063, SCB 0x3 Nov 27 19:12:58 server kernel: SEQIMODE[0x3f] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89] Nov 27 19:12:58 server kernel: SG_CACHE_SHADOW[0x2] SG_STATE[0x0] DFFSXFRCTL[0x0] Nov 27 19:12:58 server kernel: SOFFCNT[0x0] MDFFSTAT[0x5] SHADDR = 0x00, SHCNT = 0x0 Nov 27 19:12:58 server kernel: HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10] Nov 27 19:12:58 server kernel: LQIN: 0x8 0x0 0x0 0x3 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 Nov 27 19:12:58 server kernel: scsi0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x52 Nov 27 19:12:58 server kernel: scsi0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x1 Nov 27 19:12:58 server kernel: SIMODE0[0xc] Nov 27 19:12:58 server kernel: CCSCBCTL[0x4] Nov 27 19:12:59 server kernel: scsi0: REG0 == 0x6b60, SINDEX = 0x104, DINDEX = 0x104 。。。。。。 Nov 27 19:12:59 server kernel: DevQ(0:0:0): 0 waiting Nov 27 19:12:59 server kernel: DevQ(0:1:0): 0 waiting Nov 27 19:12:59 server kernel: DevQ(0:2:0): 0 waiting Nov 27 19:12:59 server kernel: (scsi0:A:1:0): Device is disconnected, re-queuing SCB Nov 27 19:12:59 server kernel: Recovery code sleeping Nov 27 19:12:59 server kernel: (scsi0:A:1:0): Abort Tag Message Sent Nov 27 19:12:59 server kernel: (scsi0:A:1:0): SCB 5 - Abort Completed. Nov 27 19:12:59 server kernel: Recovery SCB completes Nov 27 19:12:59 server kernel: found == 0x1 Nov 27 19:12:59 server kernel: Recovery code awake Nov 27 19:12:59 server kernel: Recovery code sleeping Nov 27 19:12:59 server kernel: (scsi0:A:1:0): Bus Device Reset Message Sent Nov 27 19:12:59 server kernel: Recovery SCB completes Nov 27 19:12:59 server kernel: scsi0: Bus Device Reset on A:1. 1 SCBs aborted Nov 27 19:12:59 server kernel: Recovery code awake Nov 27 19:12:59 server kernel: scsi0: Device reset returning 0x2002 Nov 27 19:12:59 server kernel: scsi: Device offlined - not ready after error recovery: host 0 channel 0 id 1 lun 0 Nov 27 19:12:59 server kernel: SCSI error : <0 0 1 0> return code = 0x10000 Nov 27 19:12:59 server kernel: end_request: I/O error, dev sdb, sector 209404208 Nov 27 19:12:59 server kernel: Buffer I/O error on device sdb2, logical block 10110526 Nov 27 19:12:59 server kernel: lost page write due to I/O error on sdb2 Nov 27 19:12:59 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:12:59 server kernel: Buffer I/O error on device sdb2, logical block 10110527 Nov 27 19:12:59 server kernel: lost page write due to I/O error on sdb2 Nov 27 19:12:59 server kernel: Buffer I/O error on device sdb2, logical block 10110528 Nov 27 19:12:59 server kernel: lost page write due to I/O error on sdb2 Nov 27 19:12:59 server kernel: Buffer I/O error on device sdb2, logical block 10110529 Nov 27 19:12:59 server kernel: lost page write due to I/O error on sdb2 Nov 27 19:12:59 server kernel: Buffer I/O error on device sdb2, logical block 10110530 Nov 27 19:12:59 server kernel: lost page write due to I/O error on sdb2 Nov 27 19:12:59 server kernel: Buffer I/O error on device sdb2, logical block 10110531 Nov 27 19:12:59 server kernel: lost page write due to I/O error on sdb2 Nov 27 19:12:59 server kernel: Buffer I/O error on device sdb2, logical block 10110532 Nov 27 19:12:59 server kernel: lost page write due to I/O error on sdb2 Nov 27 19:12:59 server kernel: Buffer I/O error on device sdb2, logical block 10110533 Nov 27 19:12:59 server kernel: lost page write due to I/O error on sdb2 Nov 27 19:12:59 server kernel: Buffer I/O error on device sdb2, logical block 10110534 Nov 27 19:12:59 server kernel: lost page write due to I/O error on sdb2 Nov 27 19:12:59 server kernel: Buffer I/O error on device sdb2, logical block 10110535 Nov 27 19:12:59 server kernel: lost page write due to I/O error on sdb2 Nov 27 19:12:59 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:12:59 server kernel: Aborting journal on device sdb2. Nov 27 19:12:59 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:12:59 server kernel: ext3_abort called. Nov 27 19:12:59 server kernel: EXT3-fs error (device sdb2): ext3_journal_start_sb: Detected aborted journal Nov 27 19:12:59 server kernel: Remounting filesystem read-only Nov 27 19:12:59 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:12:59 server kernel: SCSI error : <0 0 1 0> return code = 0x10000 Nov 27 19:12:59 server kernel: end_request: I/O error, dev sdb, sector 209368912 Nov 27 19:12:59 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:12:59 server kernel: SCSI error : <0 0 1 0> return code = 0x10000 Nov 27 19:12:59 server kernel: end_request: I/O error, dev sdb, sector 209369760 Nov 27 19:12:59 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:12:59 server kernel: SCSI error : <0 0 1 0> return code = 0x10000 Nov 27 19:12:59 server kernel: end_request: I/O error, dev sdb, sector 209370072 Nov 27 19:12:59 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:13:29 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:13:29 server kernel: printk: 5631 messages suppressed. Nov 27 19:13:29 server kernel: Buffer I/O error on device sdb2, logical block 9928706 Nov 27 19:13:29 server kernel: lost page write due to I/O error on sdb2 Nov 27 19:18:54 server kernel: device eth2 left promiscuous mode Nov 27 19:18:54 server kernel: bridge-eth2: disabled promiscuous mode Nov 27 19:18:54 server kernel: device eth1 left promiscuous mode Nov 27 19:18:54 server kernel: bridge-eth1: disabled promiscuous mode Nov 27 19:18:54 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:18:54 server kernel: EXT3-fs error (device sdb2): ext3_find_entry: reading directory #4964353 offset 0 Nov 27 19:18:54 server kernel: Nov 27 19:20:19 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:20:19 server kernel: Buffer I/O error on device sdb2, logical block 6 Nov 27 19:20:19 server kernel: Buffer I/O error on device sdb2, logical block 7 Nov 27 19:20:19 server kernel: Buffer I/O error on device sdb2, logical block 8 Nov 27 19:20:19 server kernel: Buffer I/O error on device sdb2, logical block 9 Nov 27 19:20:19 server kernel: Buffer I/O error on device sdb2, logical block 10 Nov 27 19:20:19 server kernel: Buffer I/O error on device sdb2, logical block 11 Nov 27 19:20:19 server kernel: Buffer I/O error on device sdb2, logical block 12 Nov 27 19:20:19 server kernel: Buffer I/O error on device sdb2, logical block 13 Nov 27 19:20:19 server kernel: Buffer I/O error on device sdb2, logical block 14 Nov 27 19:20:19 server kernel: Buffer I/O error on device sdb2, logical block 15 Nov 27 19:22:39 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb1, logical block 5 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb1, logical block 6 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb1, logical block 7 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb1, logical block 8 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb1, logical block 9 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb1, logical block 10 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb1, logical block 11 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb1, logical block 12 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb1, logical block 13 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb1, logical block 14 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb1, logical block 15 Nov 27 19:22:39 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb2, logical block 1033 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb2, logical block 1034 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb2, logical block 1035 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb2, logical block 1036 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb2, logical block 1037 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb2, logical block 1038 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb2, logical block 1039 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb2, logical block 1040 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb2, logical block 1041 Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb2, logical block 1042 Nov 27 19:22:39 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb2, logical block 1551 Nov 27 19:22:39 server kernel: scsi0 (1:0): rejecting I/O to offline device Nov 27 19:22:39 server kernel: Buffer I/O error on device sdb2, logical block 1554 and the smartctl output [root@server ~]# smartctl -a /dev/sdb smartctl version 5.33 [i686-redhat-linux-gnu] Copyright (C) 2002-4 Bruce Allen Home page is http://smartmontools.sourceforge.net/ Device: SEAGATE ST3146807LC Version: 0007 Serial number: 3HY8YZNY00007613S1HZ Device type: disk Transport protocol: Parallel SCSI (SPI-4) Local Time is: Wed Nov 29 19:14:25 2006 CST Device supports SMART and is Enabled Temperature Warning Enabled SMART Health Status: OK Current Drive Temperature: 29 C Drive Trip Temperature: 68 C Vendor (Seagate) cache information Blocks sent to initiator = 40668853 Blocks received from initiator = 2255578307 Blocks read from cache and sent to initiator = 15359133 Number of read and write commands whose size <= segment size = 22149142 Number of read and write commands whose size > segment size = 1651834 Vendor (Seagate/Hitachi) factory information number of hours powered up = 2001.53 number of minutes until next internal SMART test = 28 Error counter log: Errors Corrected by Total Correction Gigabytes Total EEC rereads/ errors algorithm processed uncorrected fast | delayed rewrites corrected invocations [10^9 bytes] errors read: 5754 1 0 5755 5987 165.985 0 write: 0 0 7 7 15847 69.478 0 Non-medium error count: 6491 Error Events logging not supported [GLTSD (Global Logging Target Save Disable) set. Enable Save with '-S on'] SMART Self-test log Num Test Status segment LifeTime LBA_first_err [SK ASC ASQ] Description number (hours) # 1 Background long Failed in segment --> - 2001 0x c83206c [0x3 0x11 0x0] # 2 Background short Completed - 2 - [- - -] # 3 Background short Completed - 2 - [- - -] Long (extended) Self Test duration: 3072 seconds [51.2 minutes] I’m running a long selftest of this disk. thanks!

2 1

Copying user accounts (passwords) to another server
by Nigel Kendrick 29 Nov '06

29 Nov '06

Hi Folks, I am doing a server swap out tomorrow and wondered if there was a utility that will copy user account details and their current passwords from one server to another (both CentOS 4) - there's only about 15 to do so it's not a major issue. Thanks Nigel Kendrick

6 9

hostname setting
by MrKiwi 29 Nov '06

29 Nov '06

Can someone with far more knowledge than me help here? I have a co-worker with a question; " Where should i set the server's hostname? There seems to be multiple places and i don't understand the differences. 1. # hostname mailserver.mydomain.com 2. # echo "127.0.0.1 mailserver mailserver.mydomain.com">>/etc/hosts 3. # vi /etc/sysconfig/network, add "HOSTNAME=mailserver.mydomain.com" So far i think i understand that postfix likes to see the hostname in the hosts file, but things i have read imply that postfix is pretty clever at working it out from multiple places. Apache also seems to be clever, but the conf file recommends that you hard code the server name into the config. If you don't, where does apache look? If you set the hostname during an install, where is that written? If i use method 1 above ("hostname mailserver.mydomain.com") i seem to have to do that at every boot (or script it of course) whereas the edit to /etc/hosts or /etc/sysconfig/network would survive restarts. I have read the information in "man hostname" and understand that "hostname -f" gets its info from the hosts file, but where does the function "gethostname" get its info from? Finally - which method do you all use to set you hostname? " Thanks all, MrKiwi

2 1

Iptables front-end
by Jordi Espasa Clofent 29 Nov '06

29 Nov '06

Hi all, ¿What iptables do you use to manage iptables? ¿Or maybe not? Simply curiosity, so I'm coming from openSUSE and in that distro there is a YaST module front-end (YaST firewall). TIA. -- Jordi Espasa Clofent PGP id 0xC5ABA76A #http://pgp.mit.edu/ FSF Associate Member id 4281 #http://www.fsf.org/

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