Comments for Luc de Louw's Blog

Comment on Identity Management with IPA Part II – Kerberized NFS service by jakommo

jakommo — Fri, 05 Apr 2013 19:39:13 +0000

Hi Luc,

thanks for these nice howtos, helped me alot setting up ipa.
looking forward to new posts about this.

thanks
jakommo

Comment on Upgrading RHN Satellite 5.4.1 to 5.5 by croyce

croyce — Mon, 11 Mar 2013 09:05:29 +0000

If you need a new Satellite certificate, you can download (generate) it by yourself on the RHN site (registered satellite), so no ticket is required any longer, as far as you have only one Satellite installation.

Comment on How to get a RTL2832U based DVB-T stick working on Fedora 17 by colin

colin — Thu, 07 Mar 2013 19:03:13 +0000

hi there.
I am attempting to use usb stick with rtl2832u under Fedora 17.

[root@K8 yum]# uname -a
Linux K8.home 3.7.9-104.fc17.x86_64 #1 SMP Sun Feb 24 19:19:12 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Upon insertion into USB slot stick seems to be detected ok.
/var/log/messages:

Mar 7 19:47:22 K8 kernel: [28125.411677] usb 1-5: dvb_usb_v2: ‘Realtek RTL2832U reference design’ successfully deinitialized and disconnected
Mar 7 19:47:25 K8 kernel: [28129.163045] usb 1-5: new high-speed USB device number 8 using ehci_hcd
Mar 7 19:47:25 K8 kernel: [28129.291904] usb 1-5: New USB device found, idVendor=0bda, idProduct=2832
Mar 7 19:47:25 K8 kernel: [28129.291917] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Mar 7 19:47:25 K8 kernel: [28129.291923] usb 1-5: Product: RTL2832U
Mar 7 19:47:25 K8 kernel: [28129.291928] usb 1-5: Manufacturer: Generic
Mar 7 19:47:25 K8 kernel: [28129.291933] usb 1-5: SerialNumber: 77771111153705700
Mar 7 19:47:25 K8 kernel: [28129.297838] usb 1-5: dvb_usb_v2: found a ‘Realtek RTL2832U reference design’ in warm state
Mar 7 19:47:25 K8 mtp-probe: checking bus 1, device 8: “/sys/devices/pci0000:00/0000:00:02.1/usb1/1-5″
Mar 7 19:47:25 K8 mtp-probe: bus: 1, device: 8 was not an MTP device
Mar 7 19:47:25 K8 kernel: [28129.359425] usb 1-5: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer
Mar 7 19:47:25 K8 kernel: [28129.359475] DVB: registering new adapter (Realtek RTL2832U reference design)
Mar 7 19:47:25 K8 kernel: [28129.363310] usb 1-5: DVB: registering adapter 0 frontend 0 (Realtek RTL2832 (DVB-T))…
Mar 7 19:47:25 K8 kernel: [28129.372801] i2c i2c-8: e4000: Elonics E4000 successfully identified
Mar 7 19:47:25 K8 kernel: [28129.383947] Registered IR keymap rc-empty
Mar 7 19:47:25 K8 kernel: [28129.384247] input: Realtek RTL2832U reference design as /devices/pci0000:00/0000:00:02.1/usb1/1-5/rc/rc3/input8
Mar 7 19:47:25 K8 kernel: [28129.384876] rc3: Realtek RTL2832U reference design as /devices/pci0000:00/0000:00:02.1/usb1/1-5/rc/rc3
Mar 7 19:47:25 K8 kernel: [28129.384888] usb 1-5: dvb_usb_v2: schedule remote query interval to 400 msecs
Mar 7 19:47:25 K8 kernel: [28129.396545] usb 1-5: dvb_usb_v2: ‘Realtek RTL2832U reference design’ successfully initialized and connected

Inded it seems to succeed in inserting required kernel modules:

[root@K8 yum]# lsmod
Module Size Used by
e4000 13645 1
rtl2832 19013 1
dvb_usb_rtl28xxu 29244 0
rtl2830 18643 1 dvb_usb_rtl28xxu
dvb_usb_v2 35514 1 dvb_usb_rtl28xxu
dvb_core 114833 3 rtl2830,rtl2832,dvb_usb_v2
…

When I do
scandvb /usr/share/dvb/dvb-t/uk-BlackHill -o zap >> ~/.mplayer/channels.conf

tuning fails with no channels detected

Does anyone have any suggestions?

Comment on Host based access control with IPA by Luc de Louw

Luc de Louw — Sun, 03 Mar 2013 10:44:48 +0000

Thanks for the hints

Comment on Host based access control with IPA by Stephen Gallagher

Stephen Gallagher — Sun, 03 Mar 2013 10:32:55 +0000

Two things to note:
1) You listed the hbacrule-add line twice above.
2) It is best never to mention adding srchost rules to HBAC. It does not really work, due to issues with the way PAM fails to the properly verify where the connection is coming from. This is a flaw in the underlying subsystems, not the fault of FreeIPA. With this in mind, SSSD (the client side daemon that performs the authorization checks) does not support srchost checking by default. It can be added by specifying an option in sssd.conf. (The other reason for disabling it by default is performance)

Comment on Host based access control with IPA by Luc de Louw

Luc de Louw — Sun, 03 Mar 2013 02:13:58 +0000

What do you mean with “mirror”?

Comment on Host based access control with IPA by James Cape

James Cape — Sat, 02 Mar 2013 23:45:24 +0000

…and let’s assume that when you add a new mirror, it doesn’t all come apart at the seams, requiring re-adding every host to every hostgroup.

Oh wait, that’s not a reasonable expectation.

Comment on Epson scanners on Linux systems by Jacob Bakker

Jacob Bakker — Tue, 19 Feb 2013 17:46:42 +0000

Luc,

Thank you very much for posting the above!
It worked for me! My Epson 1260 is working perfectly again under Fedora 17

Jacob

Comment on Automated disk partitioning on virtual machines with Cobbler by Luc de Louw

Luc de Louw — Sat, 22 Dec 2012 15:07:43 +0000

Well, nobody that installs a Fedora or RHEL breed distro uses IDE or SCSI emulation. Arbitrary MAC address are generally not the best idea, as it can cause conflicts (I know, there are some use cases when using closed source software with the license bound to the MAC).

This procedure works fine with Fedora 13+ and EL 5.4+

The reason why I try to realize as much as possible with Cobbler snippets is its simplicity.

Comment on Automated disk partitioning on virtual machines with Cobbler by Rich

Rich — Sun, 16 Dec 2012 17:56:28 +0000

I’m pretty sure this won’t work in the general case of a KVM guest that has emulated (eg. IDE or SCSI) disks, since that would use /dev/sda. Nor for a KVM guest that uses modern virtio-scsi (/dev/sda too). Nor a KVM guest that has an arbitrary MAC address.

Why not just probe /dev/sda, /dev/vda and /dev/xvda in turn until you find one which exists?