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centos wiki strangeness.
by Denniston, Todd A CIV NAVSURFWARCENDIV Crane 20 Oct '15

20 Oct '15

In preparing to answer a question about some yum undesired behavior, I wanted to reference fastest mirror info, but when I went to https://wiki.centos.org/PackageManagement/Yum/FastestMirror I find all the text has been squished to the right hand side of the page and made 1 word wide all the way down. The https://wiki.centos.org/FrontPage looks similar but perhaps it is a little better? Or is this an issue of looking at it with IE? Even when this disclaimer is not here: I am not a contracting officer. I do not have authority to make or modify the terms of any contract.

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strange diskspace consuming
by Götz Reinicke - IT Koordinator 20 Oct '15

20 Oct '15

Hi, I do a tgz-backup some maildir-folders with n*1000 off files and a lot of GB in storage. The backuped maildirs are removed after the tar. My assumption was, that the free diskspace should be bigger after that, but from what I get with df, it looks like I'm loosing space. Currently the tgz is saved on the same disk/mountpoint. Any hint, why removing the maildirs dont free diskspace as expected? It is still an ext3 filesystme Regards and thanks for hints . Götz -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 82420 E-Mail goetz.reinicke(a)filmakademie.de Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzender des Aufsichtsrats: Jürgen Walter MdL Staatssekretär im Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg Geschäftsführer: Prof. Thomas Schadt

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Can I force yum to only use http.
by Styma, Robert E (Robert) 20 Oct '15

20 Oct '15

Our outsourced IT department has decided to use white listing on the firewalls for outbound ftp. I was given a list of sites our lab had accessed via ftp and eventually tracked them down to Linux machines running yum. They are all CentOS 5 or 6 with a smattering of 7. It is impractical to list all the possibilities since they change on a regular basis. Also any 3rd party repos we need are another ball of wax. Various Google searches and the manual page have not shown me how to avoid using ftp mirrors. I have considered taking out the ftp-proxy information so that the ftp cannot get out, but I suspect it will just hang waiting for a response. Does anyone have any suggestions on ways to tell yum not to use ftp as the download mechanism? Thank you in advance. Bob

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Metadata checksum
by kotipalli venkatesh 20 Oct '15

20 Oct '15

Hi All I am successfully spin the VM with Centos 6.2 ISO. When i am trying to download the packages we are facing the issues. The error message copy paste below, *[root@localhost ~]# yum install ntp* *Loaded plugins: fastestmirror, refresh-packagekit, security* *Loading mirror speeds from cached hostfile* * * base: centos.excellmedia.net <http://centos.excellmedia.net>* * * extras: centos.excellmedia.net <http://centos.excellmedia.net>* * * updates: centos.excellmedia.net <http://centos.excellmedia.net>* *base | 3.7 kB 00:00* *base/primary_db | 4.6 MB 00:01* *http://centos.excellmedia.net/6.7/os/x86_64/repodata/11bcf3233241e37e1a0e04d2fde8a609215059b5b0319fd660f796d462bbe6a8-primary.sqlite.bz2 <http://centos.excellmedia.net/6.7/os/x86_64/repodata/11bcf3233241e37e1a0e04…>: [Errno -1] Metadata file does not match checksum* *Trying other mirror.* These are the commands run but noluck. 1. yum clean all 2. yum clean metadata 3. rpm --rebuilddb *Note: Not only Centos 6.2 iso, We are trying to 6.5 iso also but no luck.* Please guys help me. Regards, Venkatesh.k

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PV AMI for CentOS 7
by Jo Rhett 20 Oct '15

20 Oct '15

Is there any chance we could get a PV AMI for CentOS 7 to match the HVM version at https://aws.amazon.com/marketplace/pp/B00O7WM7QW/ref=srh_res_product_title?… We have prepurchased reserved instances based on older PV machines (m1, c1, etc) It would be very very helpful to have a PV AMI so we could migrate to CentOS 7 on those image types. https://bugs.centos.org/view.php?id=9499 <https://bugs.centos.org/view.php?id=9499> -- Jo Rhett Net Consonance : net philanthropy to improve open source and internet projects.

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Exists some problem with cronjobs under CentOS7
by C. L. Martinez 19 Oct '15

19 Oct '15

Hi all, I am having strange problems with my cron jobs in my CentOS7 kvm host. After the initial install and first boot, any cron job configured had run (including cron tasks installed by some rpm packages). Last cron's entry log is: Oct 9 17:01:01 santgraal CROND[9014]: (root) CMD (run-parts /etc/cron.hourly) Oct 9 17:01:01 santgraal run-parts(/etc/cron.hourly)[9014]: starting 0anacron Oct 9 17:01:01 santgraal run-parts(/etc/cron.hourly)[9023]: finished 0anacron Oct 9 17:01:01 santgraal run-parts(/etc/cron.hourly)[9014]: starting 0yum-hourly.cron Oct 9 17:01:01 santgraal run-parts(/etc/cron.hourly)[9029]: finished 0yum-hourly.cron cron service is running without problems: [root@coskvm01 log]# systemctl status crond crond.service - Command Scheduler Loaded: loaded (/usr/lib/systemd/system/crond.service; enabled) Active: active (running) since Sun 2015-10-11 11:49:41 UTC; 28min ago Main PID: 5124 (crond) CGroup: /system.slice/crond.service └─5124 /usr/sbin/crond -n Forcing to run cron tasks editing root's crontab with "crontab -e", it doesn't works also. Is this a bug?? Or do I need to install some package apart of: cronie-1.4.11-13.el7.x86_64 cronie-anacron-1.4.11-13.el7.x86_64 crontabs-1.11-6.20121102git.el7.noarch ???

12 34

snmpd exec issue
by Leandro 19 Oct '15

19 Oct '15

Hello guys , I was trying to get a command output from my Centos 6 server using the snmpd "exec" section. The line added to snmpd.conf id: exec get_whitelist /bin/cat /home/snmp_user/whitelist.txt Afer trying to get the resut performing the snmpwalk client form another server I always got "permission denied" After reading some forums I founded that disabling selinux It works. My question is .. What is the proper way to achieve snmpd executing some commands ? In my case it is working now but ... Im not sure if disabling selinux is the best way. Regards. Leandro.

2 1

Debugging Kernel Problems
by Tod 19 Oct '15

19 Oct '15

Not sure if this is the correct subject line but my recently installed Centos build (Linux localhost.localdomain 3.10.0-229.14.1.el7.x86_64 #1 SMP Tue Sep 15 15:05:51 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux) periodically just freezes - completely locks up, no activity, nothing in the logs, just stops dead requiring a power off and reboot. I've really looked around to try and find the _best_ way to set up debugging but there is a lot written about it from a lot of parties but I'm not sure who the definitive source is. I did try booting with the 'CentOS Linux (3.10.0-229.14.1.el7.x86_64) 7 (Core) with debugging' option but that really didn't add anything to finding a solution. Dmesg did report this however: dmesg|grep debug [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.10.0-229.14.1.el7.x86_64 root=UUID=1928d2da-784c-4b18-868c-f9858bceea6d ro crashkernel=auto rhgb quiet LANG=en_US.UTF-8 systemd.debug [ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-3.10.0-229.14.1.el7.x86_64 root=UUID=1928d2da-784c-4b18-868c-f9858bceea6d ro crashkernel=auto rhgb quiet LANG=en_US.UTF-8 systemd.debug [ 0.940176] ehci-pci 0000:00:12.2: debug port 1 [ 0.946472] ehci-pci 0000:00:13.2: debug port 1 [ 1.238335] systemd[1]: Unknown kernel switch systemd.debug. Ignoring. [ 5.083981] SELinux: initialized (dev debugfs, type debugfs), uses genfs_contexts [ 5.206423] systemd[1]: Unknown kernel switch systemd.debug. Ignoring. Which I found interesting. So, can anyone point me to a detailed guide to debugging what's going on with my build that will help me solve my locking problem? BTW, I think it might be my wireless Atheros equipped PCI card (dmesg|grep -i atheros [ 2.231264] ath5k: phy0: Atheros AR2414 chip found (MAC: 0x79, PHY: 0x45) but can't be sure because I've not any real proof that's the issue. Thanks in advance for your patience and assistance.

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Re: [CentOS] [OT] fail2ban update (epel) breaks logrotate
by tony＠softins.co.uk 18 Oct '15

18 Oct '15

In article <n009u2$85v$1(a)softins.softins.co.uk>, Tony Mountifield <tony(a)softins.co.uk> wrote: > Apologies, this is slightly off-topic being to do with an EPEL package, > although it's running on CentOS6, so I thought others here might have come > across this issue. > > I have five CentOS 6 systems running fail2ban from EPEL, and this > package was updated in the last week from 0.9.2-1.el6 to 0.9.3-1.el6. > > On all these systems, I received an error from logrotate this morning. > > [root@system ~]# /usr/bin/fail2ban-client flushlogs > logs: rolled over > Traceback (most recent call last): > File "/usr/bin/fail2ban-client", line 470, in <module> > if client.start(sys.argv): > File "/usr/bin/fail2ban-client", line 440, in start > return self.__processCommand(args) > File "/usr/bin/fail2ban-client", line 281, in __processCommand > return self.__processCmd([cmd]) > File "/usr/bin/fail2ban-client", line 185, in __processCmd > client.close() > File "/usr/lib/python2.6/site-packages/fail2ban/client/csocket.py", line 55, in close > self.__csock.sendall(CSPROTO.CLOSE + CSPROTO.END) > File "<string>", line 1, in sendall > socket.error: [Errno 32] Broken pipe > [root@system ~]# OK, on further investigation, I found that the fail2ban service had not been restarted by the update script. So I restarted it, and got the same error as it was stopping, but it started up ok. After restarting, the error no longer occurs: [root@system ~]# ps -fC fail2ban-server root 7528 1 0 Sep23 ? 00:10:06 /usr/bin/python -Es /usr/bin/fail2ban-server -s /var/run/fail2ban/fail2ban.sock -p /var/run/fail2ban/fail2ban.pid -x -b [root@system ~]# service fail2ban restart Stopping fail2ban: Traceback (most recent call last): File "/usr/bin/fail2ban-client", line 470, in <module> if client.start(sys.argv): File "/usr/bin/fail2ban-client", line 440, in start return self.__processCommand(args) File "/usr/bin/fail2ban-client", line 281, in __processCommand return self.__processCmd([cmd]) File "/usr/bin/fail2ban-client", line 185, in __processCmd client.close() File "/usr/lib/python2.6/site-packages/fail2ban/client/csocket.py", line 55, in close self.__csock.sendall(CSPROTO.CLOSE + CSPROTO.END) File "<string>", line 1, in sendall socket.error: [Errno 32] Broken pipe [FAILED] Starting fail2ban: [ OK ] [root@system ~]# ps -fC fail2ban-server root 11647 1 1 15:30 ? 00:00:00 /usr/bin/python -Es /usr/bin/fail2ban-server -s /var/run/fail2ban/fail2ban.sock -p /var/run/fail2ban/fail2ban.pid -x -b [root@system ~]# /usr/bin/fail2ban-client flushlogs logs: rolled over [root@system ~]# Hope this info is useful to others... Cheers Tony -- Tony Mountifield Work: tony(a)softins.co.uk - http://www.softins.co.uk Play: tony(a)mountifield.org - http://tony.mountifield.org

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[OT] fail2ban update (epel) breaks logrotate
by tony＠softins.co.uk 18 Oct '15

18 Oct '15

Apologies, this is slightly off-topic being to do with an EPEL package, although it's running on CentOS6, so I thought others here might have come across this issue. I have five CentOS 6 systems running fail2ban from EPEL, and this package was updated in the last week from 0.9.2-1.el6 to 0.9.3-1.el6. On all these systems, I received an error from logrotate this morning. It appears that something has broken the flushlogs option in fail2ban-client: [root@system ~]# cat /etc/logrotate.d/fail2ban # # Gentoo: # http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/net-analyzer/fail2b… # # Debian: # https://github.com/fail2ban/fail2ban/blob/debian/debian/fail2ban.logrotate # # Fedora view: # http://pkgs.fedoraproject.org/cgit/fail2ban.git/tree/fail2ban-logrotate /var/log/fail2ban.log { rotate 7 missingok compress postrotate /usr/bin/fail2ban-client flushlogs 1>/dev/null || true endscript } [root@system ~]# /usr/bin/fail2ban-client flushlogs logs: rolled over Traceback (most recent call last): File "/usr/bin/fail2ban-client", line 470, in <module> if client.start(sys.argv): File "/usr/bin/fail2ban-client", line 440, in start return self.__processCommand(args) File "/usr/bin/fail2ban-client", line 281, in __processCommand return self.__processCmd([cmd]) File "/usr/bin/fail2ban-client", line 185, in __processCmd client.close() File "/usr/lib/python2.6/site-packages/fail2ban/client/csocket.py", line 55, in close self.__csock.sendall(CSPROTO.CLOSE + CSPROTO.END) File "<string>", line 1, in sendall socket.error: [Errno 32] Broken pipe [root@system ~]# Has anyone else found this today? And even better know how to fix it? There doesn't seem to be any current activity in epel-users, and I found the update announcement in epel-package-announce, but didn't see anything about this in the "IMPORTANT incompatible changes" section. Cheers Tony -- Tony Mountifield Work: tony(a)softins.co.uk - http://www.softins.co.uk Play: tony(a)mountifield.org - http://tony.mountifield.org

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