Discuss September 2012

discuss@lists.centos.org

139 participants
148 discussions

fsck -fvy ?
by Hadi Motamedi 01 Oct '12

01 Oct '12

Dear All My server got inconsistency from sudden power cut that I fixed it with #fsck -fvy /dev/hda at the maintenance prompt . But after reboot, one of the installed applications is preventing it from booting up (as can be seen in the boot up process list). Can you please let me know how can I remove it from the boot up list to reach the root user prompt and then re-install it again ? Thank you

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Changes to inodes discovered by aide
by Jobst Schmalenbach 01 Oct '12

01 Oct '12

Hi. On one of my servers aide just reported inode changes to a large bunch of files in a variety of directories, e.g. /usr/bin, /usr/sbin etc. This machine sits behind a couple of firewalls and it would be hard to get to. The day before I updated "clam*" and updated the aide database right after that: -rw------- 1 root root 7407412 Sep 26 10:58 aide.db.gz The problem was that the changes were made when no-one was in the office, here are a few: Directory: /usr/sbin Mtime : 2012-09-26 10:55:15 , 2012-09-27 06:36:42 Ctime : 2012-09-26 10:55:15 , 2012-09-27 06:36:42 File: /usr/sbin/wpa_supplicant Ctime : 2012-09-07 06:39:44 , 2012-09-27 06:36:40 Inode : 2490595 , 2490536 MD5 : IVNJESmXwIG9XY0MowL3CA== , DUQMpFMsKqlZgjOmJIp3OQ== RMD160 : 4xuWhqqliTLM5Jx6zAvQ9f1PY1c= , AlSPQGiVe+/T8YdHDSIypI904kA= SHA256 : OaUWNIGUS9AhXEjV3p8Cg4TeIEjuQ/tu , z1c9XCKVyjDzDuN7t32B+sbj6nil90TK File: /usr/sbin/clamav-milter Size : 202453 , 206637 Ctime : 2012-09-26 10:55:15 , 2012-09-27 06:36:37 Inode : 2490507 , 2490625 MD5 : HoONWy9q+qbRzHtlTeR6Wg== , klWTxNFmL8MEAQmIPwvHxg== RMD160 : lfa72Vrh6Q2DWjf+UIxREAK4V1Y= , MPbEoKH/ws3aWA+sBuycRvU9DP0= SHA256 : aFRvKcA999IPRFJ2qByu8aKB6QmHpW5i , u0oTtBkHjchhlY8AIejOfKPoJRencpmK Yum does not report anything (last 4 lines os yum.log) Sep 21 10:40:11 Installed: ghostscript-fonts-5.50-13.1.1.noarch Sep 26 10:55:14 Updated: clamav-0.97.6-1.el5.rf.x86_64 Sep 26 10:55:15 Updated: clamd-0.97.6-1.el5.rf.x86_64 Sep 26 10:55:15 Updated: clamav-milter-0.97.6-1.el5.rf.x86_64 I ran (a fresh install) of rkhunter, did not find a thing ... Is it possible that a change to one file sets of a domino effect of indode changes? thanks Jobst -- Diplomacy: The art of saying, "Nice Doggy," until you can find a stick. | |0| | Jobst Schmalenbach, jobst(a)barrett.com.au, General Manager | | |0| Barrett Consulting Group P/L & The Meditation Room P/L |0|0|0| +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia

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Prelink failure
by Lars Hecking 30 Sep '12

30 Sep '12

I have a number of CentOS6 machines, and on one of them, the daily prelink cron job aborts. Any ideas what to look for? /etc/cron.daily/prelink: /etc/cron.daily/prelink: line 47: 9381 Aborted (core dumped) /usr/sbin/prelink -av $PRELINK_OPTS >> /var/log/prelink/prelink.log 2>&1 I'm unfamiliar with prelink, so I'm not sure what to look for in the logs. Grepping out recurring entries like "Could not find one of the dependencies", "^Prelinking", "^Linking", "undefined non-weak symbols", "Could not prelink", the interesting stuff remaining is /usr/sbin/prelink: /opt/lgtonmc/bin/libcommonssl2.so is not present in any config file directories, nor was specified on command line /usr/sbin/prelink: /usr/pgsql-9.1/lib/libpq.so.5.4 is not present in any config file directories, nor was specified on command line /usr/sbin/prelink: /usr/bin/emacs-23.1: COPY relocations don't point into .bss or .sbss section /usr/sbin/prelink: /usr/bin/emacs-23.1-nox: COPY relocations don't point into .bss or .sbss section Prelink failed with return value 134

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Re: [CentOS] hi
by James B. Byrne 30 Sep '12

30 Sep '12

On Fri, September 28, 2012 15:21, m.roth(a)5-cent.us wrote: > Andrei Rolando LeÃ³n Salas wrote: >> Hello how are u, im having a little problem. i use the webmin to >> install >> automatly postfix, in the other server works, but in this now says. >> >> Error while checking current Postfix configuration. Please manually >> fix >> Postfix configuration. >> >> postfix: fatal: file /etc/postfix/main.cf: parameter mail_owner: >> unknown user name value: postfix >> >> Manually edit the Postfix configuration >> file.<https://mercadeoeficaz-cr.com:10000/postfix/edit_manual.cgi> >> >> i dont know what to do, can u help me please > > You need to learn something about what you're doing. > > For one, how did webmin install postfix? If from a tarball, then > there's a > bunch of stuff to do. If, on the other hand, you'd done it the *right* > way, with a yum install, the scripts in the package would have created > the > user and group postfix. > > mark > Webmin as shipped will use Yum on CentOS to handle software management (other than Perl modules). From the way the information is presented by the OP it seems likely that the default method is used in this instance. The error is this: >> postfix: fatal: file /etc/postfix/main.cf: parameter mail_owner: >> unknown user name value: postfix You are missing the postfix user id in /etc/passwd. If that user id is missing then it is likely that your install procedure did not complete properly. I would suggest using yum remove post followed by yum install postfix issued as the root user from the command line. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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vsFTP and shorewall
by muiz 30 Sep '12

30 Sep '12

Dear all, Dear support and users: Sorry to trouble you! I configure the shorewall firewall to forward ftp and ssh port to another server, but failed. Can you help me check? I cannot login both SSH 2222 and ftp! Below is my environment: (attachment is shorewall dump) 1. Gateway (FC6) 1.1) eth0: lan static IP: 192.168.1.20 1.2) eth1: external public static IP: 113.89.142.80 2.3) Shorewall-3.2.8 is running 2. FTP Server: (Centos63, iptables and selinux are off) 2.1) eth0: lan static IP: 192.168.1.231 2.2) Open SSH port 22 and FTP port 20, 21 already (tested) 2.3) vsftp.conf : use default settings and it works for internal users 3. I want to forward internet access FTP and SSH to FTP Server: 3.1) 113.89.142.80: 20 -> 192.168.1.231:20 udp (FTP) 3.2) 113.89.142.80: 21 -> 192.168.1.231:21 tcp (FTP) 3.3) 113.89.142.80: 2222 -> 192.168.1.231:22 tcp (SSH) 4. Shorewall settings: 4.1 interfaces #ZONE INTERFACE BROADCAST OPTIONS net eth1 113.89.142.255 norfc1918,arp_filte lan eth0 detect arp_filter ovpn tun0 - #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE 4.2 zones #ZONE TYPE OPTIONS IN OUT # OPTIONS OPTIONS fw firewall net ipv4 lan ipv4 ovpn ipv4 #LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE 4.3 policy #SOURCE DEST POLICY LOG LIMIT:BURST # LEVEL fw all ACCEPT lan net ACCEPT lan fw ACCEPT lan ovpn ACCEPT ovpn lan ACCEPT net all DROP all all REJECT #LAST LINE -- DO NOT REMOVE 4.4 rules #SECTION RELATED SECTION NEW ACCEPT all fw tcp ftp <<< it works for local FTP service (tested) ACCEPT all fw udp ftp <<< it works for local FTP service ACCEPT all fw tcp 2222 ACCEPT all fw tcp ssh,domain Ping/ACCEPT net fw ACCEPT all fw tcp 5222 ACCEPT all fw udp 5222 ACCEPT:info all $FW tcp 22 DNAT net lan:192.168.1.231 tcp 21 DNAT net lan:192.168.1.231 udp 20 DNAT net lan:192.168.1.231:22 tcp 2222 #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE 5. # cat /proc/sys/net/ipv4/ip_forward 1 6. more /etc/sysconfig/iptables-config IPTABLES_MODULES="ip_conntrack_netbios_ns ip_nat_ftp ip_conntrack_ftp" Chain net_dnat (1 references) pkts bytes target prot opt in out source destination 3 156 DNAT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:21 to:192.168.1.231 0 0 DNAT udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:20 to:192.168.1.231 5 260 DNAT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:2222 to:192.168.1.231:22 do you know what's wrong? Thanks and best regards! Muiz

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11TB ext4 filesystem - filesystem alternatives?
by Rafał Radecki 29 Sep '12

29 Sep '12

Hi All. I have a CentOS server: CentOS 5.6 x86_64 2.6.18-238.12.1.el5.centos.plus e4fsprogs-1.41.12-2.el5.x86_64 which has a 11TB ext4 filesystem. I have problems with running fsck on it and would like to change the filesystem because I do not like the possibility of running long fsck on it, it's a production machine. Also I have some problems with running fsck (not enough RAM, problem with scratch_files option) and if the filesystem will need intervention I will be in a problematic situation. Which other mature and stable filesystem can you recommend for such large storage? Best regards, Rafal Radecki.

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kernel 2.6.32-279.9.1.el6.x86_64 does not build from the source rpm's
by Seth Bardash 28 Sep '12

28 Sep '12

kernel 2.6.32-279.9.1.el6.x86_64 does not build from the source rpm's using the UNmodified config file and following the directions explicitly. Previous kernels build fine from the same directions. A little help from the developers would be greatly appreciated. while building I get this output: c1: warnings being treated as errors drivers/base/platform.c:621: error: 'platform_legacy_suspend' defined but not used drivers/base/platform.c:633: error: 'platform_legacy_resume' defined but not used make[2]: *** [drivers/base/platform.o] Error 1 make[1]: *** [drivers/base] Error 2 make[1]: *** Waiting for unfinished jobs.... make: *** [drivers] Error 2 make: *** Waiting for unfinished jobs.... error: Bad exit status from /var/tmp/rpm-tmp.wfx1kU (%build) Bad exit status from /var/tmp/rpm-tmp.wfx1kU (%build) The first line is what troubles me as there are usually warning when building a kernel. Thanks in advance for some help. Seth Bardash Integrated Solutions and Systems LLC Colorado Springs, CO 80921 seth(a)integratedsolutions.org Failure cannot survive knowledge and perseverance!

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Re: [CentOS] Apache : Listen on ports other than 80
by adekunleadekoya＠gmail.com 28 Sep '12

28 Sep '12

What is 'selinux ?' and selinux policy ? Are there commands I need to access these ? I wld b glad to know this. ------Original Message------ From: John R Pierce Sender: centos-bounces(a)centos.org To: centos(a)centos.org ReplyTo: CentOS mailing list Subject: Re: [CentOS] Apache : Listen on ports other than 80 Sent: Sep 28, 2012 9:50 PM On 09/28/12 1:47 PM, adekunleadekoya(a)gmail.com wrote: > I v run d netstat and no result(i.e no process is listening on port 1010). Also I telnet 127.0.0.1 1010 just 2 confirm that no process is using the port. I can't figure out why the port(and any other except 80) would not work! selinux ? try setting it to 'permissive' if its in 'enforcing', and see if it works. if so, you'll need to adjust the selinux policy to allow apache to listen on more ports. -- john r pierce N 37, W 122 santa cruz ca mid-left coast _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos Sent from my BlackBerry wireless device from MTN

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Re: [CentOS] Apache : Listen on ports other than 80
by adekunleadekoya＠gmail.com 28 Sep '12

28 Sep '12

I am running as a root user. I am very much aware that a non-privileged user can't access some functions. But again, I am running centos from my oracle virtualbox. I hope the virtual machine is not a factor? ------Original Message------ From: lists-centos To: adekunleadekoya(a)gmail.com Subject: Re: [CentOS] Apache : Listen on ports other than 80 Sent: Sep 28, 2012 9:45 PM ------------ Original Message ------------ > Date: Friday, September 28, 2012 01:41:46 PM -0700 > From: John R Pierce <pierce(a)hogranch.com> > To: centos(a)centos.org > Subject: Re: [CentOS] Apache : Listen on ports other than 80 > > On 09/28/12 1:30 PM, adekunleadekoya(a)gmail.com wrote: >> I saw this error msg : 'permission denied:make_sock : could not >> bind to address 0.0.0.0:1010. No listening sockets >> available,shutting down' . > > is another process listening on 1010 ? > > netstat -an |grep :1010 > > look for lines with LISTEN on the end ... or, are you trying to start apache from a non-privileged user? ports through 1024 are reserved and only root can bind processes to them. - Richard Sent from my BlackBerry wireless device from MTN

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Re: [CentOS] Apache : Listen on ports other than 80
by adekunleadekoya＠gmail.com 28 Sep '12

28 Sep '12

I saw this error msg : 'permission denied:make_sock : could not bind to address 0.0.0.0:1010. No listening sockets available,shutting down' . ------Original Message------ From: lists-centos To: adekunleadekoya(a)gmail.com Subject: Re: [CentOS] Apache : Listen on ports other than 80 Sent: Sep 28, 2012 8:26 PM > -----Original Message----- > From: adekunleadekoya(a)gmail.com > Date: Fri, 28 Sep 2012 18:49:33 > To: <CentOS(a)mailing.list> > Reply-To: adekunleadekoya(a)gmail.com > Subject: Apache : Listen on ports other than 80 > > Hi, > I just install centos 6.3 on my oracle virtualbox. I tried 2 > configure apache 2 listen on port say 1010 but after adding a > 'Listen 1010' to the httpd.conf file and then try 2 restart d > httpd service, I found that d service failed to start. If I remove > the 'Listen 1010' line then d httpd service restarts successfully. > What do I need to do so I could instruct d web server to use other > ports (besides 80) ? > > Are there default settings in centos that are causing this prob ? > I have done same experiment successfully wit apache on windows. I > need to setup virtualhost with my apache on centos. I need help > now. Pls help! > > Regards > > Kunle Start by looking in the apache error log. I think you'll get hints there on what the problem is. - Richard Sent from my BlackBerry wireless device from MTN

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Discuss September 2012