Discuss March 2017

discuss@lists.centos.org

125 participants
111 discussions

Python search path
by Alice Wonder 05 Mar '17

05 Mar '17

Hello, Working on a project to create clean spec files for libbitcoin for CentOS 7 (and eventually I want them to work in Fedora 25+ too) These spec files must work with the user defines an alternate %{_prefix} before building them. This means that python components would be installed in /opt/libbitcoin (or whatever) instead of in /usr so %{python2_sitelib} and %{python2_sitearch} no longer would apply. sys.path.append looks like the way to tell python about a new path to look for stuff, but I'm guessing there are guidelines somewhere for how that is suppose to properly done from within spec files. Unfortunately I can't find them, and search engines are getting harder and harder to use to find technical related information, always changing my query and showing me completely unrelated results. Anyway I didn't see anything in the Fedora packaging guidelines for python, that seems to be targeting a prefix of /usr Thanks for any links or suggestions.

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CentOS 7 iso file SHA-256 hashes
by Darr247 04 Mar '17

04 Mar '17

I downloaded CentOS-7-x86_64-Everything.iso (8,233,418,752 bytes) by clicking on the 'Everything' link in the 'Rolling' line on https://wiki.centos.org/Download (supposedly the 1611 build). But when I look in the sha256sum.txt file from https://buildlogs.centos.org/rolling/7/isos/x86_64/ (where Chrome says that iso came from), there is no SHA hash for a file of that name. The reason I wanted to check it is because it's a different size than another one I found on my hard drive while looking through the Downloads history in Chrome. The other file I found was CentOS-7-x86_64-Everything-1611.iso (8,280,604,672 bytes), which returns a hash of af4969ebbdc479d330de97c5bfbb37eedc64c369f009cb15a97f9553ba441c88 and that matches the value given in the sha256sum.txt file for the file of that name. So, my question is tri-fold. what's the SHA-256 hash supposed to be for the file given when clicking the 'Everything' link on centos.org. then, why is the 'official' download link sending a file that's not listed in the hash results. and finally, why is the file sent thusly, different from another 'everything' iso allegedly from the same build? Thanks.

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New C7 kernel ABI and kmods
by Lamar Owen 04 Mar '17

04 Mar '17

All, This is just a heads-up that the new C7 update kernel breaks ABI compatibility, at least as far as using the ELrepo nVidia drivers is concerned. I have posted more details to the ELrepo list; but since many folks use the Elrepo kmods I thought a heads-up would be appropriate. If you use the ELrepo nvidia kmod you will either need to hold off on the kernel update or uninstall the nvidia kmod.

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last update yum and kernel Problem
by Günther J. Niederwimmer 04 Mar '17

04 Mar '17

Hello, the last update brings much Problems ? On my System the most KVM client have a crashed yum after reboot the new kernel is broken and have a panic screen I have to reboot to a older kernel ? The first I have to run yum-complete-transaction afterward i have to reinstall the kernel ?? this helps to restart the KVM Client ! is it possible the deltarpm is broken ? Also RPM or "yum check" have a problem with the new update for ipa-* I mean the problem is the naming 4.4.0-14.el7.centos.6 -- mit freundlichen Grüssen / best regards Günther J. Niederwimmer

2 1

imaging a drive with dd
by Robert Moskowitz 04 Mar '17

04 Mar '17

I am building a mailserver and with all the steps, I want to image the drive at various 'checkpoints' so I can go back and redo from a particular point. The image is currently only 4GB on a 120GB drive. Fdisk reports: Disk /dev/sdb: 111.8 GiB, 120034124288 bytes, 234441649 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x0000c89d Device Boot Start End Sectors Size Id Type /dev/sdb1 2048 1026047 1024000 500M 83 Linux /dev/sdb2 1026048 2074623 1048576 512M 82 Linux swap / Solaris /dev/sdb3 2074624 6268927 4194304 2G 83 Linux and parted: Model: Kingston SNA-DC/U (scsi) Disk /dev/sdb: 120GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 1049kB 525MB 524MB primary ext3 2 525MB 1062MB 537MB primary linux-swap(v1) 3 1062MB 3210MB 2147MB primary ext4 what dd params work? dd if=/dev/sdb of=os.img bs=1M count=3210 ? thanks

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C 7.3 sshd will not reload
by me＠tdiehl.org 04 Mar '17

04 Mar '17

Hi, Since upgrading to 7.3 I am having a problem getting sshd to reload after configuration changes. When I issue the command "systemctl reload sshd.service" I get the following error: "Unit sshd.service cannot be reloaded because it is inactive." It is obviously still running because I am connected over ssh to the machine and netstat shows it is listening. (vnewman pts3) # netstat -tulpn | grep ssh tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 29249/sshd tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 3012/sshd: root@pts (vnewman pts3) # If I reboot the machine, then everything is OK. Has anyone seen this behavior or more importantly know how to fix it? Regards, -- Tom me(a)tdiehl.org Spamtrap address me123(a)tdiehl.org

3 7

A firefox/CentOS 7 oddity
by m.roth＠5-cent.us 03 Mar '17

03 Mar '17

I just switched to a new workstation, running C 7, the other day. I was looking at a blog, and in the thread of cmts, I wanted to play this one youtube video. I listened, then closed the tab. The video that had been *above* it in the thread started playing, and hasn't stopped. Every other time until now that I've done this, closing the tab shuts down the video.... mark

1 0

what's the max thread number per process in centos
by qw 03 Mar '17

03 Mar '17

Hi, I have one question: what's the max thread number per process in centos? Thanks! Regards Andrew

3 3

Laptop turns off after lid closed Centos6
by david 03 Mar '17

03 Mar '17

Folks I have a laptop which i am using temporarily as a test server. It is permanently plugged in. It is running Centos 6, command line only. In the past, I could close the lid, thereby turning off the display, but not turning off the machine. It remained running indefinitely. A recent update (this past week) changed that behavior. Now, when I close the lid, the laptop turns itself off within an hour. A google search talks about tools like "upower" and apcitool, but a "yum search" does not locate them. Is there a way to revert back to the previous behavior? Thanks David

4 4

MRTG and eth0
by Matt 03 Mar '17

03 Mar '17

Is there an easy way to graph ethernet eth0 on Centos 7 with MRTG without using SNMP? I thought I found a way to do this in past by using a shell script to poll the interface but cannot find it back.

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Discuss March 2017