Discuss October 2016

discuss@lists.centos.org

118 participants
98 discussions

CentOS 6.8 and samba
by isdtor 23 May '17

23 May '17

Other than the original 6.8 release version 3.6.23-33, samba has not been functioning correctly for me under 6.8. The symptoms are that about 6-7 days after starting the server, users start complaining that they can no longer open documents on their share. Upon inspection, I find several, sometimes nearly a dozen smb processes owned by a single user, on top of those run under root. Stopping the service does not stop these processes. They are only killable with SIGKILL, and after that, a service restart does not result in a functioning service, i.e. connections are refused, which can be verified easily with smbclient. The only cure is a server reboot. And it is not the same user id every time it happens. Useful logs of any type are not available. I have tested -35 and -36, both show the same behaviour. This is a production server and I have no time for tinkering; downgrading to -33 and blocking samba updates is the only workaround for now.

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howto install yumex
by geo.inbox.ignored 07 Apr '17

07 Apr '17

greetings. trying to install yumex, but obviously have forgotten what i did previously to install packages. sudo yum install yumex* errors out with; No package yumex* available. please inform my chemo brain what is correct. tia. -- peace out. CentOS GNU/Linux 7.1511 tc,hago. g . =+= Tired of having your microsoft os hacked? Change to Linux os, used by microsoft hackers. =+= in a world with out fences, who needs gates. =+=

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How to enable the svm cpu flag inside a vm?
by Leonard den Ottolander 03 Apr '17

03 Apr '17

Hello, I'm trying to get the Android Emulator to run inside a kvm vm on CentOS-6. Apparently the latest Android Emulators cannot run without hardware acceleration so I am trying to get the vm to see the svm cpu flag. Host: $ grep model\ name /proc/cpuinfo | sort -u model name : AMD Phenom(tm) II X4 965 Processor $ grep svm /proc/cpuinfo | sort -u flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock nrip_save $ cat /sys/module/kvm_amd/parameters/nested 1 I have tried copying the cpu options (Opteron_G3) in the host cpu configuration and setting the svm flag to either "model", "required" or "force" to no avail: $ ps waux | grep qemu qemu 7962 7.2 21.9 3722092 2680668 ? Rl 13:23 6:36 /usr/libexec/qemu-kvm -name C7-Android -S -M rhel6.6.0 -cpu Opteron_G3,+invtsc,+wdt,+skinit,+ibs,+osvw,+3dnowprefetch,+cr8legacy, +extapic,+cmp_legacy,+3dnow,+3dnowext,+pdpe1gb,+fxsr_opt,+mmxext,+ht, +vme -enable-kvm -m 3072 -realtime mlock=off -smp <snip> So the question is: How do I enable the svm flag in the guest? Regards, Leonard. -- mount -t life -o ro /dev/dna /genetic/research

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I want to connect to a l2tp server from centos.
by Eliezer Croitoru 22 Mar '17

22 Mar '17

I have a server currently connecting to a pptp remote server. This server(lns\lac) has the option for pptp connections and l2tp connections. The l2tp connections are not using ipsec encryption at all. I have seen couple guides\tutorials on the internet: - https://raymii.org/s/tutorials/IPSEC_L2TP_vpn_on_CentOS_-_Red_Hat_Enterpris… - https://wiki.archlinux.org/index.php/L2TP/IPsec_VPN_client_setup But all the guides that I have found are using ipsec with "secret". On ubuntu there is a gui applet that helps setting these kind of connections up but I am working with a CentOS server and not Ubuntu desktop. If someone used l2tp the same way I want to use on CentOS 7 please give me some advice. If you have a guide which might help me I will be more then happy to see this one. Thanks, Eliezer

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An 'orrible question: Outlook 365 under wine on CentOS?
by m.roth＠5-cent.us 21 Mar '17

21 Mar '17

Either CentOS 6 or 7 - anyone know if it's possible? Upper Management has decided on a policy that IMAP is going to go away in the near future, and they want everyone on Lookout, sorry, Outlook 365. mark, VMNH* * Very Much Not Happy

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Outliner plugin for editor
by H 27 Nov '16

27 Nov '16

I am currently running not only Geany (on CentOS and on Windows) but also Gedit on CentOS, much of the use is as markdown-editors being a recent convert to this language. I would, however, also like to be able to essentially use it as an outliner - remember the old DOS outliners that were great for creating document outlines? It would have been perfect had I been able to fold and unfold sections of whatever markdown document I am working on in Geany or Gedit but sadly that does not seem possible... Nor have I been able to find a plugin for Gedit or Geany that would add that functionality. I do not want to have to use LibreOffice or something similar, it's too heavy and cumbersome. Hoping that someone can steer me to a solution!Thank you.

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Fwd: CentOS on new Dell
by Michael B Allen 04 Nov '16

04 Nov '16

On Mon, Oct 24, 2016 at 8:11 PM, Milos Blazevic <milos.blazevic(a)sbb.rs> wrote: > I've seen the thread(s) you started on CentOS mailing list about Dell and ThinkPad > laptops and running Centos on 'em. > > Not sure if you've seen my question, but I'm considering to purchase a laptop, run EL7 on it, and I'm weighing between the Thinkpad and Latitude, so: > > What was it to make you opt for E7470 over, say, Carbon X1? According to RedHat's Hardware compatility list Carbon models are certified, > while none of the Dell's aren't. > > Also, have you given up on CentOS over Fedora? I'd love to hear how's CentOS 7 support for E7470 hardware. Hi Milos, The Thinkpad T series and Latitude are *very* similar computers. They are both business "ultrabooks" with a 1600x1080 display option, nice keyboards (not "chicklet" style), a trackpoint and trackpad and RJ-45 builtin. I bought a Dell Latitude E7470 over the Lenovo for several reasons. One is this comment which is worth mentioning again: On Fri, Sep 30, 2016 at 11:58 PM, Gordon Messmer <gordon.messmer(a)gmail.com> wrote: > It's worth mentioning again that Dell is one of the companies doing the > development for the bits that don't work, and that those drivers are often > the ones that get Lenovo equipment going, too. Lenovo does not, to the best > of my knowledge, do any Linux development. Another reason is that I have heard about people having problems with Lenovo. Not just with software but with hardware malfunctions. I spoke to someone on the phone that had hardware problems with their new Thinkpad (although I suspect some of the problems could have been misdiagnosis by the user). After describing how nice the E7470 they're thinking about dumping their 1yo X250 and getting a Dell. As for the Carbon, that is a very different computer. The Carbon is an ultralight / thin Macbook-like machine with Windows so I have no advice for you there. I have not tried CentOS on the E7470 but I'm quite certain it would not work because I have tried the latest Fedora Live which is about 100 kernel revisions newer and even that doesn't completely work. Specifically, if I plug in an external display it freezes. My feeling is I need a newer display driver (and thus newer kernel). The only other issue I noticed was that wireless didn't work but it seems more like a glue issue and not necessarily a driver. Otherwise, suspend and everything else worked near as I can tell which is actually pretty impressive for a brand new machine. So, I am doing other things while this new E7470 ages like a fine wine. Or maybe I'll loose patience and just install Fedora and try a "vanilla" kernel package. Then maybe after a year or two CentOS 8 or whatever will run on it and then I can just run steady for 4+ years without getting pummeled by stupid updates and feature creep that you get with Fedora and Ubuntu or whatever the latest hot distro is. The E7470 is obviously a laptop of choice for business people. And that is the type of machine developers use. So chances of good compatibility are very high. You just have to give it time. I was watching Daredevil season 1 and they use Latitudes that look exactly like mine. And that was probably filmed in 2014. So the form factor at least has been around for a while which is good. Unfortunately I can't say the same thing about the show. Mike

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What is broken with fail2ban
by Günther J. Niederwimmer 02 Nov '16

02 Nov '16

Hello List, with CentOS 7.2 it is not longer possible to run fail2ban on a Server ? I install a new CentOS 7.2 and the EPEL directory yum install fail2ban I don't change anything only I create a jail.local to enable the Filters [sshd] enabled = true .... ..... When I start afterward fail2ban systemctl status fail2ban is clean But systemctl status firewalld is broken ● firewalld.service - firewalld - dynamic firewall daemon Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled) Active: active (running) since Sa 2016-08-20 12:08:27 CEST; 4min 50s ago Main PID: 13158 (firewalld) CGroup: /system.slice/firewalld.service └─13158 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid Aug 20 12:12:23 yyyy.xxxxxx.at firewalld[13158]: 2016-08-20 12:12:23 ERROR: NOT_ENABLED Aug 20 12:12:24 yyyy.xxxxxx.at firewalld[13158]: 2016-08-20 12:12:24 ERROR: NOT_ENABLED Aug 20 12:12:25 yyyy.xxxxxx.at firewalld[13158]: 2016-08-20 12:12:25 ERROR: NOT_ENABLED Aug 20 12:12:27 yyyy.xxxxxx.at firewalld[13158]: 2016-08-20 12:12:27 ERROR: NOT_ENABLED Aug 20 12:12:27 yyyy.xxxxxx.at firewalld[13158]: 2016-08-20 12:12:27 ERROR: NOT_ENABLED Aug 20 12:12:28 yyyy.xxxxxx.at firewalld[13158]: 2016-08-20 12:12:28 ERROR: NOT_ENABLED Aug 20 12:12:29 yyyy.xxxxxx.at firewalld[13158]: 2016-08-20 12:12:29 ERROR: NOT_ENABLED Aug 20 12:12:30 yyyy.xxxxxx.at firewalld[13158]: 2016-08-20 12:12:30 ERROR: NOT_ENABLED Aug 20 12:12:31 yyyy.xxxxxx.at firewalld[13158]: 2016-08-20 12:12:31 ERROR: NOT_ENABLED Aug 20 12:12:31 yyyy.xxxxxx.at firewalld[13158]: 2016-08-20 12:12:31 ERROR: NOT_ENABLED Have any a Idea what is broken ? ipset, iptables, fail2ban ? -- mit freundlichen Grüßen / best regards, Günther J. Niederwimmer

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Power Cut
by Hadi Motamedi 02 Nov '16

02 Nov '16

Dear All I am using a centos server for cdr billing and mediation device on a remote network. I am experiencing problem that I am suspicious it comes from main supply power cut at the remote site. The power supply to the remote site comes from battery charger that will be automatically switched in circuit under main supply power cut but cannot provide adequate power for more than 2 hours . I am suspicious that the remote system is suffering from many frequent main supply power cut . Can you please do me favor and let me know if there is any log on my centos server that I can check to see if there would be many frequent power cut there ? Thank you for your time

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CVE-2016-5195 DirtyCOW: Critical Linux Kernel Flaw
by Valeri Galtsev 02 Nov '16

02 Nov '16

Dear All, I guess, we all have to urgently apply workaround, following, say, this: https://gryzli.info/2016/10/21/protect-cve-2016-5195-dirtycow-centos-7rhel7… At least those of us who still have important multi user machines running Linux. (Yes, me too, I do have a couple, thank goodness, the rest are already not ;-) Have a productive weekend, everybody. Valeri ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++

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Discuss October 2016