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yum priorities question
by Mufit Eribol 15 Oct '08

15 Oct '08

Hello, I have a question about working principles of yum. Here are the details: Installed package: GeoIP.i386 1.4.4-1.el5.centos Repo: CentOS Extras Priority for CentOS Extras repo: 1 "yum update" wants to replace the above package with the following: Package: geoip.i386 1.4.5-1.el5.rf Repo: rpmforge Priority for rpmforge: 15 And yes, the following is already in the priorities.conf [main] enabled=1 Why does yum try to replace the package from a repo with higher priority? Isn't "yum priorities" supposed to keep it? Regards, Mufit

5 10

creating a user from an RPM package
by Spiro Harvey 15 Oct '08

15 Oct '08

What wizardry do you guys use in the SPEC file when creating/deleting a user from an RPM package? I was going to create a macro like: %define user(login,uid,gid,name,homedir,shell) \ echo "$1:x:$2:$3:$4:$5:$6" >>/etc/passwd; \ echo "$1:!!:12005:0:99999:7:::" >>/etc/shadow; \ echo "$1:x:$3:" >>/etc/group; \ mkdir -p $5; \ chown $2:$3 $5 and then appropriate sedness and rm's when removing it, but I figure there has to be a cleaner way, or a builtin as this surely is a common feature. The RPM guide doesn't seem to mention it, or if it does, I missed it. Alternatively, if you could point me to a package or a spec file that does this, I'd be much obliged. Thanks -- Spiro Harvey Knossos Networks Ltd 021-295-1923 www.knossos.net.nz

3 3

USB external HDD error messages
by Guest3731 15 Oct '08

15 Oct '08

Hi - relatively inexperienced user here. I installed CentOS 5.2 yesterday (http install via a mirror, worked brilliantly), as well as a new Seagate 1Tb USB external HDD (from the new Xtreme line), for backup/media storage. Using fdisk I put two primary partitions on the Seagate, /dev/sde1 and /dev/sde2 (roughly half the drive each). Then I used mkfs.ext3 on both to create ext3 filesystems on those partitions. My fstab entries look like so: /dev/sde1 /mnt/seagate1 ext3 rw,user,noexec 0 0 /dev/sde2 /mnt/seagate2 ext3 rw,user,noexec 0 0 I copied some data onto /dev/sde1 and went to bed. This morning, I found a clump of kernel messages on the console (lightly edited from /var/log/messages): kernel: end_request: I/O error, dev sde, sector 492896319 kernel: Buffer I/O error on device sde1, logical block 61612032 kernel: EXT3-fs error (device sde1): ext3_readdir: directory #30801921 contains a hole at offset 0 kernel: Aborting journal on device sde1. kernel: end_request: I/O error, dev sde, sector 12655 kernel: Buffer I/O error on device sde1, logical block 1574 kernel: lost page write due to I/O error on sde1 kernel: sd 3:0:0:0: Device not ready: <6>: Current: sense key: Not Ready kernel: Add. Sense: Logical unit not ready, initializing command required kernel: end_request: I/O error, dev sde, sector 63 kernel: Buffer I/O error on device sde1, logical block 0 kernel: lost page write due to I/O error on sde1 kernel: ext3_abort called. kernel: EXT3-fs error (device sde1): ext3_journal_start_sb: Detected aborted journal kernel: Remounting filesystem read-only I can guess that I/O means Input/Output, but other than that I'm flummoxed. My fear is that the Seagate is defective. Can someone point me in a good direction? Any input would be greatly appreciated.

6 8

Centos 5x ipv6 sendmail smtps
by Tony Wicks 15 Oct '08

15 Oct '08

Hi all, I'm working my way through v6ing our network. I have a mail server with the default dovecot/sendmail configuration working happily for pop3, pop3s, imap, imaps, smtp, and smtps on v4. I have managed to get all but smtps working on v6. Following is the relevant sendmail.mc - DAEMON_OPTIONS(`Name=MTA-v4, Family=inet, Name=MTA-v6, Family=inet6') DAEMON_OPTIONS(`Port=smtps, Name=TLSMTA, M=s')dnl I've googled to no avail as yet, anyone know what the relevant config would be ? thanks [root@new-mail mail]# telnet 2:removed::191 smtp Trying 2:removed::191... Connected to 2:removed::191 (2:removed::191). Escape character is '^]'. 220 new-removed.net ESMTP Sendmail 8.13.8/8.13.8; Wed, 15 Oct 2008 14:45:52 +1300 quit 221 2.0.0 new-mail.safenz.net closing connection Connection closed by foreign host. [root@new-mail mail]# telnet 2:removed::191 smtps Trying 2:removed::191... telnet: connect to address 2:removed::191: Connection refused telnet: Unable to connect to remote host: Connection refused [root@new-mail mail]# telnet 127.0.0.1 smtps Trying 127.0.0.1... Connected to new-removed.net (127.0.0.1). Escape character is '^]'. quit Connection closed by foreign host. [root@new-mail mail]#

1 0

Yum and case-sensitivity
by Jeff 15 Oct '08

15 Oct '08

Hi List, On one of our servers (CentOS 4 32 bit), we have the dag repo enabled. Yesterday morning during a yum update, yum replaced the CentOS package "perl-DBD-MySQL" with one from dag, "perl-DBD-mysql". For whatever reason, the two packages differ, in that only one of them (the CentOS built one) includes: /usr/lib/perl5/vendor_perl/5.8.5/i386-linux-thread-multi/Mysql.pm /usr/lib/perl5/vendor_perl/5.8.5/i386-linux-thread-multi/Mysql/ Statement.pm I've excluded the dag version in our yum.conf so it won't re-apply it and break perl code that has "use Mysql;", but I'm confused as to why yum saw fit to replace the package, and, why it did so yesterday. (This box has not had any packages added or removed, outside the standard 'yum update', for many months; and the only repo other than CentOS-managed ones it he dag one.) Bug? Expected behavior?

3 2

Weird problem in PHP 5.1.6/possible bug
by Kai Schaetzl 14 Oct '08

14 Oct '08

I hit a weird problem with the default PHP 5.1.6 on CentoS 5.2. It seems the default 5.1.6 PHP on CentOS has a bug in the functions escapeshellargs/escapeshellcmd: it "gulps" any special (non-ASCII) characters, so that they are missing from the output. I have been assured that this does not happen on other 5.1.6 or newer on other Linux distributions. I don't see this behavior with the exact same $LANG setting (en_US.UTF8) on CentOS 4. Moreover the behavior is different when running the script via console or webserver. If I run on console with my $LANG setting of en_US.UTF8 I get correct output if the input is UTF-8 (which is still incorrect, if the encoding doesn't match it should output garbage and not "nothing"). Via webserver I still get no output with the same characters and encoding of the page set to UTF-8. Could others check on what they have available (other PHP, other distributions) and tell the results? a test page: <? $test = "äöüÄÖÜß"; print $test; print "<br>\n"; print escapeshellarg($test); print "<br>\n"; $test = "Ã¤Ã¶Ã¼ÃÃÃÃ"; print $test; print "<br>\n"; print escapeshellarg($test); ?> It will output German umlauts in ISO-8859-1 and UTF-8. Depending on your $LANG setting and the coding set to the webpage you may either get some correct characters or garbage between ''. The main point is that the respective output for lines 1 and 2 and for lines 3 and 4 should be *identical* with the exception of the outer single quotes. The function is supposed to escape single quotes and do nothing else with the input (e.g. output "as is"). If the output is only '', then there is a bug. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com

2 4

tg3 ethernet card drops connection under heavy load
by Sean Carolan 14 Oct '08

14 Oct '08

We have an HP DL360 server with dual on-board Tigon3 ethernet cards. We are using eth0, eth1 is unused at the moment. Sometimes when the network interface is under heavy load, for example moving large file transfers over rsync or NFS, the network interface stops working and we lose all connection to the server. The only solution at this point is to jump on the console and restart the network interface. I have not found anything in the log files to indicate what is causing this. Has anyone else experienced something similar? Or perhaps you know how I could troubleshoot this?

4 6

Squid Number of hits
by lingu 14 Oct '08

14 Oct '08

Dear all, I am running squid on centos 5.Is there is any tool to calculate number of ip's hit the server for month wise. Even any command to find out the number of hits is also ok. Regards, Lingu

4 3

Samba Hosts Allow/Deny
by Joseph L. Casale 14 Oct '08

14 Oct '08

I am running CentOS 5.2 w/ Samba 3.0.28 and have a basic user level setup and am trying to use hosts allow and deny but it does not have an effect? I have specified them in the share level of the config. I have tried: hosts allow = 192.168.0.72/32 hosts deny = 0.0.0.0/0 Also: ; hosts allow = 192.168.0.72/32 hosts deny = 0.0.0.0/0 except 192.168.0.72/32 Still, any hosts can gain access? Can anyone shed some light on this? Thanks, jlc

2 2

Squid proxy High Availability
by lingu 14 Oct '08

14 Oct '08

Hi all, I am running squid integrated with squidguard.dansguardian,clamav running on single standalone centos 5 server.Also running webmin for managing squid.This Squid is serving for 4000 clients. Since it is serving more users i don't want to take risk by running single server,if there is any single point of failure will cause all of my users to standstill. So i am planned to go for one more Centos5 server with cluster.Can any one suggest me how to design it either i have to go for common storage for storing all global files or i need to synchronize both the server periodically by running instance on local disk of both the servers. Below is the scenario currently running on the server squid is under /etc and squidguard database under /var/lib and dansguardian config file under /etc/dansguardian and webmin is under /usr/local Help me in designing the setup of high availability squid Regards, lingu

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