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Question about "generic" USB <=> Serial Port kernel drivers...
by Robert Heller 27 Apr '18

27 Apr '18

OK, I am running CentOS 6 on my Laptop and Desktop, presently kernel version 2.6.32-696.20.1.el6.x86_64 (yes, a version or so out of date -- I'll probably do an update soon -- non-trivial since my Internet connection is via dialup). I recently bought a couple of Adafruit Arduino compatibles, a Flora and a Metro 328. Hooking up the Flora and the Metro to a Raspberry Pi running Raspbian (kernel 4.9.35-v7+), tells me that the Metro 328's USB uses a FTDI USB serial interface (ftdi_sio.ko) and the Flora uses the cdc_acm (cdc-acm.ko) USB serial interface. Both of these drivers are available with CentOS 6's kernel, but since Adafruit uses their own Vendor & Product IDs and my (old) kernel's ftdi_sio and cdc-acm drivers don't have Adafruit Vendor & Product IDs, the drivers don't automagically connect. The ftdi_sio has parameters for the Vendor & Product IDs, and specifing the product ID for the Metro 328 allows the driver to latch onto the Metro 328's USB connect and things work (I get a /dev/ttyUSB0 device). The cdc-acm does not have any parameters and I don't see any way to get it to connect. I am pretty sure all Adafruit did was change the programming of the USB chip to have their Vendor & Product IDs and the driver should work (the FTDI one does, once the Vendor & Product IDs are passed to it). My question: since the cdc-acm is not parameterized, I am guessing I need to get the kernel module source (from RH's kernel source RPM? Or maybe Elrepo has it?), hack in the Adafruit Vendor & Product IDs into its table of Vendor & Product IDs and recompile it. Is this correct? Also: is there some "trick" that allows me to create a kernel module that will work with kernel updates, without having to re-compile it after every kernel update? -- Robert Heller -- 978-544-6933 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services heller(a)deepsoft.com -- Webhosting Services

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Posting check
by Robert Heller 27 Apr '18

27 Apr '18

I am wondering if I am able to post to the CentOS list. -- Robert Heller -- 978-544-6933 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services heller(a)deepsoft.com -- Webhosting Services

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Postfix config problem w/ tls
by Chuck Campbell 26 Apr '18

26 Apr '18

I have followed the guides on setting up postfix relay to my account at network solutions. I added these to main.cf: inet_interfaces = localhost relayhost = [mail.mydomain.com]:587 smtp_sasl_auth_enable = yes smtp_sasl_security_options = noanonymous smtp_sasl_password_maps = hash:/etc/postfix/sasl_password smtp_use_tls = yes smtp_tls_CAfile = /etc/pki/tls/certs/sendmail.pem The username and password are correct, and all these options work fine from thunderbird on a windows box in my local network. I get no errors on postfix restart, but when I try to send an email from the centos box, I get this: Apr 26 17:00:33 host postfix/smtp[10627]: C9C1D80075: to=<campbell(a)somedomain.com>, relay=mail.mydomain.com[xxx.xxx.xxx.xxx]:587, delay=0.87, delays=0.08/0.02/0.72/0.04, dsn=5.0.0, status=bounced (host mail.mydomain.com[xxx.xxx.xxx.xxx] said: 503 you must authenticate first (#5.5.1) (in reply to MAIL FROM command)) Why is tls not authenticating? Under centos 5 I used sendmail, and it all worked just fine. -chuck -- ACCEL Services, Inc.| Specialists in Gravity, Magnetics | (713)993-0671 ph. | and Integrated Interpretation | (713)993-0608 fax 448 W. 19th St. #325| Since 1992 | (713)306-5794 cell Houston, TX, 77008 | Chuck Campbell | campbell(a)accelinc.com | President & Senior Geoscientist | "Integration means more than having all the maps at the same scale!"

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[OFF-TOPIC] Reminder to tighten ALL types of security
by Always Learning 25 Apr '18

25 Apr '18

This posting is off-topic because it is not about Centos. Please refrain from replying to the list as that will generate further off-topic traffic inevitably irritating subscribers. On the balance of probabilities, I think everyone will benefit from reading at least the first 6 pages of a 19 pages English criminal sentencing statement about a child, in England, successfully breaking into the home and business computer systems of top USA CIA, FBI and Homeland Security entities. It is shocking and disquieting. Security is more than a firewall and SELINUX - it is procedures too. When the CIA director is easily hacked and his family pestered, how safe are you and your systems ? In the Crown Court at Leicester (England) The Queen versus Kane Gamble Sentenced at the Central Criminal Court (Old Bailey, London) 20 April 2018 Sentencing remarks of Mr Justice Haddon-Cave https://www.judiciary.gov.uk/judgments/r-v-kane-gamble-sentencing-remarks-o… https://www.judiciary.gov.uk/wp-content/uploads/2018/04/r-v-gamble-sentenci… P. -- Regards, Paul. England, EU. England's place is in the European Union.

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Vmware - Slightly off topic
by Jerry Geis 25 Apr '18

25 Apr '18

Hi All, What is the correct way to provide a CentOS 7 - WMware image for ESX ? As an amateur to VMware - I thought - great I can get VMplayer and ESX should be able to import my image... Wrong... I even went through the trouble of "converting" to VMWare workstation and thinking ESX could import that - Apparently still Wrong... I cannot for the life of me understand how one product family is so incompatible with itself. But that is another story. I just want to be able to provide a pre-built image with CentOS 7 and my other programs on a bootable VMware image that is easily imported into any VMware platform - Workstation, ESX or other. How is that accomplished ? Thanks for your thoughts and experience. Jerry

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Down C6 ALL without torrent ?
by Always Learning 25 Apr '18

25 Apr '18

Hi, I have a machine with a BIOS that does not permit DVD installation. It accepts everything else including some old superseded media types. Is it possible to download C6 combined parts 1 and 2 not using Torrent ? I have an aversion to using anything that comes from unknown sources, as used by Torrent. Thank you. -- Regards, Paul. England, EU. England's place is in the European Union.

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Re: [CentOS] BUG: soft lockup - CPU#0 stuck for 36s! [swapper/0:0]
by KM 25 Apr '18

25 Apr '18

All,This happens on all of our CentOS 7 VMs. but as stated in the email trail, the file softlockup_thresh does not exist. Should it be added? What is the best way to get rid of this behavior. Thanks in advance and sorry if I missed something along the way.KM From: correomm <correomm(a)gmail.com> To: CentOS mailing list <centos(a)centos.org> Sent: Thursday, August 18, 2016 1:55 PM Subject: Re: [CentOS] BUG: soft lockup - CPU#0 stuck for 36s! [swapper/0:0] Yes, I tried it, but does not exists: vmguest # cat /proc/sys/kernel/softlockup_thresh cat: /proc/sys/kernel/softlockup_thresh: No such file or directory On Thu, Aug 18, 2016 at 2:06 PM, Carlos A. Carnero Delgado < carloscarnero(a)gmail.com> wrote: > 2016-08-18 12:39 GMT-04:00 correomm <correomm(a)gmail.com>: > > > This bug is reported only on the VM's with CentOS 7 running on on VMware > > ESXi 5.1. > > The vSphere performance graph shows high CPU consume and disk activity > only > > on VM's with CentOS 7. Sometimes I can not connect remotely with ssh > > (timeout error). > > > > I'm also seeing those errors in several servers, running under 5.5. > Currently investigating if this > <https://kb.vmware.com/selfservice/microsites/search. > do?language=en_US&cmd=displayKC&externalId=1009996> > has anything to do (the resource overcommit bit). > > HTH, > Carlos. > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > https://lists.centos.org/mailman/listinfo/centos > _______________________________________________ CentOS mailing list CentOS(a)centos.org https://lists.centos.org/mailman/listinfo/centos | | Virus-free. www.avg.com |

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VGA connectors fail to work with i915 & 3.10.0-693.21.1.el7.x86_64 kernel
by Gregory P. Ennis 25 Apr '18

25 Apr '18

Everyone, A while back I reported problems with the Intell i915 video driver in an ASUS mother board. I never found a solution, but did find a work around. It is apparent that when the VGA cable is connected during boot time the screen becomes blank and does not allow a login, but if the vga cable is disconnected and the DVI connector on the video screen and motherboard are used everything works as expected. I am posting this so that if others have the same problem they can easily bypass the problem with a DVI cable, and probably an HDMI cable, but I was not able to test the HDMI. Greg Ennis

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Will RHSA-2018:0980 hit Centos repos soon?
by Sean 24 Apr '18

24 Apr '18

Hi all, RH published the advisory 2 weeks ago, according to https://access.redhat.com/errata/RHSA-2018:0980. The main repo does not appear to have the packages noted yet - http://mirror.centos.org/centos/7/updates/x86_64/Packages/ We've been waiting on a few of these bugs to be fixed for some time. I don't mean to be impatient, just looking for an ETA. Thanks for all the great work the team does!

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Libreswan IPSec Protected GRE Tunnel & firewall-cmd
by Adam Tauno Williams 24 Apr '18

24 Apr '18

I am attempting to setup an IPSec protected GRE tunnel with a Cisco router. I believe the IPSec association is up, however I cannot move traffic over the tunnel. It is not clear how to integrate the tunnel interface (gre1) with firewall-cmd; adding the interface to trusted does not appear to 'stick'. [root@aqueduct ~]# firewall-cmd --add-interface=gre1 --zone=trusted The interface is under control of NetworkManager and already bound to 'trusted' The interface is under control of NetworkManager, setting zone to 'trusted'. [root@aqueduct ~]# firewall-cmd --list-all --zone=trusted trusted target: ACCEPT icmp-block-inversion: no interfaces: <<<< nothing ... No traffic ever appears to be received by the GRE interface. 6: gre1@NONE: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1460 qdisc noqueue state UNKNOWN qlen 1 link/gre A.B.C.D peer X.Y.W.Z inet 10.65.1.1 peer 10.65.1.2/32 scope global gre1 valid_lft forever preferred_lft forever inet6 fe80::200:5efe:4acc:1a64/64 scope link valid_lft forever preferred_lft forever [root@aqueduct ~]# ifconfig gre1 gre1: flags=209<UP,POINTOPOINT,RUNNING,NOARP> mtu 1460 inet 10.65.1.1 netmask 255.255.255.255 destination 10.65.1.2 inet6 fe80::200:5efe:4acc:1a64 prefixlen 64 scopeid 0x20<link> unspec 4A-CC-1A-64-00-00-F0-00-00-00-00-00-00-00-00-00 txqueuelen 1 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 146 bytes 12180 (11.8 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 -- Adam Tauno Williams <mailto:awilliam@whitemice.org> GPG D95ED383 OpenGroupware Developer <http://www.opengroupware.us/>

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