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Error dovecot restart
by Muhammad A. Fatahna 12 Jun '12

12 Jun '12

Dear all, i have a problem when install dovecot on CentOS 5, below my configuration [root@mail home]# vim /etc/dovecot-sql.conf driver = mysql connect = host = localhost dbname=postfix user=mail password=password default_pass_scheme = PLAIN password_query = SELECT password FROM mailbox WHERE username = '%u' [root@mail home]# vim /etc/dovecot.conf log_path = /var/log/dovecot.log auth_username_format = %Lu passdb sql { args = /etc/dovecot-sql.conf } userdb static { args = uid=501 gid=501 home=/home/vmail/%d/%n } [root@mail home]# service dovecot restart Stopping Dovecot Imap: [FAILED] Starting Dovecot Imap: Error: Can't write to log directory /var/log: Permission denied Fatal: Invalid configuration in /etc/dovecot.conf [FAILED] i have try searching but i don't see step fix it, -- http://mafatahna.web.id

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working dhcpd.conf with routes
by Boris Epstein 11 Jun '12

11 Jun '12

Hello listmates, I am running DHCPD for IPv4 on a Centos 5 machine. I am wondering if anyone has got a functional dhcpd.conf configuration serving static routes to Linux, Mac OS X and Windows clients. I tried a couple of variations of static-routes options - but have yet to create something that would work. Thanks. Boris.

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centos 6.2 xfs + nfs space allocation
by Stephan van Hienen 11 Jun '12

11 Jun '12

Centos 6.2 system with xfs filesystem. I'm sharing this filesystem using nfs. When I create a 10 gigabyte test file from a nfs client system : dd if=/dev/zero of=10Gtest bs=1M count=10000 10000+0 records in 10000+0 records out 10485760000 bytes (10 GB) copied, 74.827 s, 140 MB/s Output from 'ls -al ; du' during this test : -rw-r--r-- 1 root root 429170688 Jun 8 10:13 10Gtest 654456 10Gtest -rw-r--r-- 1 root root 1756831744 Jun 8 10:13 10Gtest 2230720 10Gtest -rw-r--r-- 1 root root 2492145664 Jun 8 10:11 10Gtest 4348288 10Gtest -rw-r--r-- 1 root root 4686782464 Jun 8 10:11 10Gtest 8542592 10Gtest -rw-r--r-- 1 root root 10485760000 Jun 8 10:12 10Gtest 16943552 10Gtest The file is using almost double the size ? Even after a few days the file is showing the same disk usage. Only umounting and remounting the filesystem fixes the problem. When I do the same test on an ext4 filesystem no issues. (same server/client) Same issue on 2 centos 6.2 servers. I also tried to reproduce the issue on an rhel 5.8 system with xfs, but here the disk usage is ok. (I don't have a rhel6 systems with the xfs addon subscription) Stephan

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CVE-2012-2122 ()
by Johnny Hughes 11 Jun '12

11 Jun '12

The CentOS team has been looking at the issue called out in these stories: http://threatpost.com/en_us/blogs/trivial-password-flaw-leaves-mysql-databa… http://arstechnica.com/information-technology/2012/06/security-flaw-in-mysq… http://www.net-security.org/secworld.php?id=13076 According to the upstream provider EL4, EL5 and EL6 are not impacted by the above issue: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-2122 Thanks, Johnny Hughes

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CentOS-announce Digest, Vol 88, Issue 6
by centos-announce-request＠centos.org 11 Jun '12

11 Jun '12

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CEBA-2012:0718 CentOS 5 doxygen FASTTRACK Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Mon, 11 Jun 2012 11:13:34 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:0718 CentOS 5 doxygen FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20120611111334.GA1996(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:0718 Upstream details at : http://rhn.redhat.com/errata/RHBA-2012-0718.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 72c425f77c5c39f7acf6e022521cc85b76c394784e93f04188e0681251e6c592 doxygen-1.4.7-2.i386.rpm 97ea811c40a83bf5c7f30efe5394769206c61deb045b41477e0f0f3d96762a42 doxygen-doxywizard-1.4.7-2.i386.rpm x86_64: 24a17887e906d6bbbb8425a6870f8170e6d2355fbc94e143c24df886cb81ca61 doxygen-1.4.7-2.x86_64.rpm 4793a72c194fb9b3e8886d6f52e44f1b4428177740f06a8523f6ffc4c70894ad doxygen-doxywizard-1.4.7-2.x86_64.rpm Source: 4e8fd530bab7d5d119fdb81b9cb61303ee66bf5961220a7c4d6b86afbb7028c2 doxygen-1.4.7-2.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 88, Issue 6 **********************************************

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iptables: hitcount
by Helmut Drodofsky 11 Jun '12

11 Jun '12

Hello, up to CentOS 5.3 it was possible, to control new ip connections by "recent", "seconds" and "hitcount" -A INPUT -m state --state NEW -m recent --set -p tcp --dport 80 -A INPUT -m state --state NEW -m recent --update --seconds 60 --hitcount 1000 -p tcp --dport 80 -j LOG --log-prefix "FW DROP IP Flood: " -A INPUT -p tcp -m tcp --dport 80 -m state --state NEW -m recent --update --seconds 60 --hitcount 1000 -j DROP -A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT so that - short time high new connections rate for the web server where accepted, but not over a longer time. E.g. CentOS 5.8 or CentOS 6.2 accept only -A INPUT -m state --state NEW -m recent --set -p tcp --dport 80 -A INPUT -m state --state NEW -m recent --update --seconds 1 --hitcount 15 -p tcp --dport 80 -j LOG --log-prefix "FW DROP IP Flood: " -A INPUT -p tcp -m tcp --dport 80 -m state --state NEW -m recent --update --seconds 1 --hitcount 15 -j DROP -A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT So a complex web page with many small icons e.g. webmail pages initiate the log in line 2 and drop in line 3 . hitcount does not accept values of 25 or above: [root@server ~]# iptables -A INPUT -m state --state NEW -m recent --set -p tcp --dport 80 [root@server~]# iptables -A INPUT -m state --state NEW -m recent --update --seconds 1 --hitcount 25 -p tcp --dport 80 -j LOG --log-prefix "FW DROP IP Flood: " iptables: Unknown error 4294967295 what can i do to protect the web server? Is there any any configuration parameter to increase the values for hitcount? Best regards Helmut Drodofsky -- Viele Grüße Helmut Drodofsky Internet XS Service GmbH Heßbrühlstraße 15 70565 Stuttgart Geschäftsführung Dr.-Ing. Roswitha Hahn-Drodofsky HRB 21091 Stuttgart USt.ID: DE190582774 Tel. 0711 781941 0 Fax: 0711 781941 79 Mail: info(a)internet-xs.de www.internet-xs.de

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system date using ntp client is drifting
by Kaushal Shriyan 11 Jun '12

11 Jun '12

Hi, I have a set of servers whose system time is drifting. I am running ntp client on CentOS 5.8. My config is here -> http://fpaste.org/s55U/ Anything i am missing? Regards, Kaushal

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Re: [CentOS] Error dovecot restart
by Muhammad A. Fatahna 11 Jun '12

11 Jun '12

> man touch > man chmod > man chown file has ready, chmod use 755 and chown use vmail, this below : [root@mail ~]# ls -la /etc/dovecot* -rwxr-xr-x 1 vmail vmail 42989 Jun 11 17:08 /etc/dovecot.conf -rwxr-xr-x 1 vmail vmail 181 Jun 11 15:27 /etc/dovecot-sql.conf [root@mail ~]# [root@mail ~]# ls -la /var/log/dovecot.log -rwxr-xr-x 1 vmail vmail 1180 Jun 11 16:42 /var/log/dovecot.log [root@mail ~]# there is something wrong on my configuration -- http://mafatahna.web.id

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Re: [CentOS] 75% - 80% Rebuild Complete
by Eugene Poole 10 Jun '12

10 Jun '12

OK, I'm about 90% sure that I've corrected the boot loader situation with RAID-1 and the second hard drive. I haven't tested the correction, but here's what I did: Examined the grub.conf file and noticed that hd0 uses (hd0,1), so what followed was grub grub> device (hd1) /dev/sdc grub> root (hd1,1) grub> setup (hd1) <after receiving the successful message> grub> quit I didn't rebuild the boot loader on /dev/sda because it is working (if it ain't broke don't fix it). My situation is that I'm using 4 - 1 TB hard drives and I used the following pattern: /dev/sda | /dev/sdc = First Raid -1 volume /dev/sdb | /dev/sdd = Second Raid-1 volume Thanks all for the suggestions and thoughts! Gene

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Kickstart progress report?
by Lars Hecking 09 Jun '12

09 Jun '12

When I'm kickstarting a CentOS5 machine, there's a progress report that shows how many packages have been installed so far, how many left, how much time it has taken, how much longer to go, and estimate for the total install time. Under CentOS6, I only get a report about packages (completed: N of M). Is there any way to add the time information back on CentOS6? This is a text install, btw.

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