Discuss January 2018

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89 participants
70 discussions

sshfs mounting on Centos 6.9
by Miguel González 16 Jan '18

16 Jan '18

Hi all, I am trying to mount on boot a sshfs filesystem. I have tried this in /etc/fstab backup@myserver.com:/home/backup/myserver /backup fuse.sshfs nonempty,allow_other 0 2 but only works when network works. I have also tried this in my crontab: @reboot sshfs -o idmap=backup myserver.com:/home/backup/myserver /backup but doesn´t seem to work either. What else can I try? Thanks, Miguel --- This email has been checked for viruses by AVG. http://www.avg.com

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Squid + wccp + firewalld
by Ranbir 16 Jan '18

16 Jan '18

Hi Everyone, I'm trying to get squid + wccp on a Centos 7 box working with a Cisco router. I've done this before several times using Centos 6 and iptables, but never on Centos 7 with firewalld. I've searched far and wide for clear, concise instructions on how to do what I want in Centos 7. I've pieced together what I've found to come up with what I thought should work. Unfortunately, squid simply refuses to respond. At the moment, it looks like squid isn't forwarding the requests it's receiving from the router over the GRE tunnel interface. The cisco router is showing the tunnel is up and active, which means wccp is working in that sense. I've edited sysctl.conf exactly as I would have on a Centos 6 box. Squid is configured like it would have been on a Centos 6 box, too. Here are the firewall rules: [root@s0989-stocac1 ~]# firewall-cmd --list-all public (active) target: default icmp-block-inversion: no interfaces: ens192 tun0 sources: services: ctc-custom dhcpv6-client ssh ports: 8081/tcp 3127/tcp 3128/tcp 8080/tcp protocols: masquerade: yes forward-ports: port=80:proto=tcp:toport=3127:toaddr=1.1.1.1 sourceports: icmp-blocks: rich rules: rule family="ipv4" source address="2.2.2.0/26" protocol value="gre" accept [root@s0989-stocac1 ~]# firewall-cmd --direct --get-all-rules ipv4 nat POSTROUTING 0 -j MASQUERADE ipv4 nat PREROUTING 0 -i tun0 -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 3127 Does anyone have any pointers/tips? I think I've messed up the firewalld rules somehow, but I'm not sure. Thanks in advance. -- Ranbir

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Hello!
by Hideki Momokita. 16 Jan '18

16 Jan '18

To whom it may concern, Hello,I am Hideki Momokita,I joined last time. I work in IT Security at The MRC Foundation. I am Japanese. I was sending it from Osaka in Japan. Sorry,I am poor at English. Best regards, Hideki Momokita.

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Re: [CentOS] lshw in centos 7 withdrawn
by david 15 Jan '18

15 Jan '18

John-- Thanks for the suggestion. I finally had a chance to get to the system in question, It was the only one of many that exhibited the USB hang. I tried a reboot with the two USB disks disconnected. Everything worked. I plugged them in, and then did both "lsusb -v" and "lshw", and again, everything worked. Continuing my test: Reboot with both drives plugged in: all worked. Power off, wait 1 minute for everything to quiet down, power on: all worked. So, I can't reproduce the problem. I guess I have to blame cosmic rays or those nasty gremlins that inhabit our IC's. :-) Or is it related to the annoying spin-down and spin-up delay of external USB disks. I have issues with the spin-up delay on other CentOS platforms, and have managed to find a kludge to avoid it most of the time. Windows 10 seems to handle the delay well. Thanks for your idea. At least it led me to "lsusb -v". David At 05:33 PM 1/11/2018, Stephen John Smoogen wrote: >On 11 January 2018 at 20:23, david <david(a)daku.org> wrote: > > Folks > > > > I've been running lshw for years in both Centos 6 and Centos 7, yet just > > recently it started hanging. Neither a Control^C nor a "kill" of the > > process cured the hang; only a reboot. > > > >Is this just one system or a range of boxes? I just ran it on 2 >different ones running CentOS 7 and it worked fine there. If it is >just one particular hardware then look through the lshw man page and >try the versions of something like > >lshw -disable usb > >to see if it still happens. [It might require other tests also.] > > > > When I run it by hand from the command line, it displays stuff on the next > > line overwriting it with things like PCI, USB. And USB is the last thing I > > see. A Control-C does not unlock it. > > > > I am running lshw-B.02.18-7.el7.x86_64. The CPU is an Intel I7-3770K, > > running CentOS 7.4.1708 > > > > Is there any idea? Is there some alternate program that could list the > > hardware? > > > > Thanks > > > > David > >

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el7 systemd :: usage of AssertPathExists
by Adrian Sevcenco 15 Jan '18

15 Jan '18

Hi! I am trying to use AssertPathExists in a systemd unit but it seems it not working. Does anyone have problems with this? i have this in unit : AssertPathExists= AssertPathExists=/etc/mlsensor/mlsensor.properties but then when i start the service i get no errors : 26225 /usr/bin/java -Xms16m -Xmx32m -DMLSENSOR_HOME=/tmp -Djava.util.logging.config.class=lia.Monitor.monitor.LoggerConfigClass -Dlia.Monitor.ConfigURL=file:/etc/mlsensor/mlsensor.properties -jar /usr/share/java/mlsensor/MLSensor.jar i can't modify the java application, i am just doing an systemd unit for it... Anyone have any experience making systemd unit fail if the configuration file is not in place? Thank you! Adrian

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CentOS Linux 7 (1708) AltArch i386 Kernel
by Johnny Hughes 13 Jan '18

13 Jan '18

Red Hat no longer maintains the i386 kernel for RHEL 7.4. We have been using a modified kernel until this latest meltdown / spectre release (*kernel-3.10.0-693.11.6.el7*). This latest release does not build on i386/i686 and we can't figure out how to make it work. Build try: https://buildlogs.centos.org/c7.1708.u.i386/kernel/20180109171431/3.10.0-69… SRPM: http://people.centos.org/hughesjr/kernel-3.10.0-693.11.6.el7.centos.plus.sr… In the mean time, people running the altarch i386 distribution can the latest i386 experimental kernel .. use the repo file from here (bottom of the page, 'CentOS-Experimental.repo' to '/etc/yum.repo.d/' ) to get it: https://wiki.centos.org/SpecialInterestGroup/AltArch/i386 We could use some community help in: 1. Making the 3.10.0-693.11.6.el7.centos.plus.i386 build. 2. Testing the 4.9.75.el7.centos.i686 kernel from the experimental repo on the i386 arch. Please post info on this thread in the mailing list. In the past the Springdale Linux distro has had i386 kernels as well, but they have not updated any since the 7.4 release (a couple behind us), so they haven't gotten it to build either. If we can not get a working backported kernel-3.10.0-693.11.6.el7, I'll push a newer 4.9.x LTS kernel from the experimental repo as an update to the i386 AltArch updates repository. Let's set a timeout of next Friday as the drop dead fix date for kernel-3.10.0-693.11.6.el7 .. if we can't get one to build, we'll push the latest LTS kernel from kernel.org it the i386 AltArch updates repo. Thanks, Johnny Hughes

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update to Centos7.4: Failed to open \EFI\BOOT\grubx64.efi - Not Found
by johan.vermeulen7＠telenet.be 13 Jan '18

13 Jan '18

Hello All, updating from Centos7.3 to Centos7.4 rendered one of our laptops unbootable. EM: Failed to open \EFI\BOOT\grubx64.efi - Not Found Failed to load image \EFI\BOOT\grubx64.efi: Not Found start_image() returned Not Found How could this occur because of an update and how to fix this? What I tried is booting from centos usb, chroot to /mnt/sysimage and gave command: efibootmgr --create --label CentOS --disk /dev/sda1 --loader "\EFI\centos\shim.efi" This gave no EM, but booting remains impossible. I have to say I don't know whether to try grub2 of efibootmgr commands. Any help would be very much appreciated. Greetings, J.

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FOSDEM Dojo update
by Rich Bowen 12 Jan '18

12 Jan '18

As you are no doubt aware, we are once again planning to hold a Dojo at the Marriott Grand Place on the Friday before FOSDEM starts - Friday, February 2, 2018. The schedule for the event may be found at https://wiki.centos.org/Events/Dojo/Brussels2018 and includes two tracks covering a wide variety of topics. Attendance at this event is free, but if you plan to attend please register - https://www.eventbrite.com/e/centos-dojo-at-fosdem-tickets-41309238043 - for planning and catering purposes. For those unable to attend, we will be recording (video) both tracks this year, and the sessions will be posted to YouTube as soon after the event as we can manage. See you in Brussels! -- Rich Bowen - rbowen(a)centosproject.org @RDOcommunity // @CentOSProject // @rbowen

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Is kernel-3.10.0-693.11.6.el7 tested with old hardware?
by Gerhard Schneider 12 Jan '18

12 Jan '18

Today we tried to update machines w/ Core2 Duo E6750 from 3.10.0-693.11.1.el7.centos.plus to 3.10.0-693.11.6.el7.centos.plus and the machines did not boot due to a kernel panic. Before we dig any further I wanted to know if the 11.6 kernel has been tested on old hardware, too, or if the problem is well known but not documented (yet). Thank you in advance! Gerhard Schneider -- Gerhard Schneider Institute of Lightweight Design and e-Mail: gs(a)ilsb.tuwien.ac.at Structural Biomechanics (E317) Tel.: +43 1 58801 31716 TU Wien / Vienna / Austria Fax: +43 1 58801 31799 A-1060 Wien, Getreidemarkt 9/BE02 http://www.ilsb.tuwien.ac.at/~gs/

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lshw in centos 7
by david 12 Jan '18

12 Jan '18

Folks I've been running lshw for years in both Centos 6 and Centos 7, yet just recently it started hanging. Neither a Control^C nor a "kill" of the process cured the hang; only a reboot. When I run it by hand from the command line, it displays stuff on the next line overwriting it with things like PCI, USB. And USB is the last thing I see. A Control-C does not unlock it. I am running lshw-B.02.18-7.el7.x86_64. The CPU is an Intel I7-3770K, running CentOS 7.4.1708 Is there any idea? Is there some alternate program that could list the hardware? Thanks David

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Discuss January 2018