Discuss August 2017

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94 participants
72 discussions

Light-weight window manager, recommendations
by m.roth＠5-cent.us 07 Aug '17

07 Aug '17

So, I've mentioned that I've got an original netbook, circa 2009, and I'm going to put CentOS on it. 32 bit. Not huge disk, old Atom processor, not tons of memory. Any recommendations for a light-weight window manager? Before I went to KDE, I used fvwm2, and all I'm going to do is use it to read webmail and browse, read news, etc, so I don't need a lot. mark

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centos7: looking for libwebpdemux
by wwp 06 Aug '17

06 Aug '17

Hello there, I'm looking for libwebpdemux.so, possibly 0.4.x. I had it installed on my CentOS6, from EPEL, but now on CentOS7, EPEL doesn't provide it at all. Anybody knows about it? Maybe a rpm rebuild would do it? Regards, -- wwp

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VDQ Repos for CentOS 7
by Beartooth 05 Aug '17

05 Aug '17

I have a woefully dumb question. When I tell my wife's laptop, with CentOS 7 installed and a live ethernet cable plugged into it, "yum update," it fails saying that it doesn't see any repos. What do I need to do to?

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What RH-like on a Dell XPS 15 (9590)?
by wwp 05 Aug '17

05 Aug '17

Hello there, I've just got a Dell XPS 15 (9590) at work and need to set up a stable GNU/Linux system on it. I thought of CentOS7, but.. obviously its kernel can't run on this hardware. What would you recommend? Waiting for CentOS8 is not an option unless it's a question of few weeks. Are there respins of the CentOS7 DVDs w/ more top-recent kernels? I'm know of Fedora 26 or course, and not willing to switch to Ubuntu 16.10 at all. Regards, -- wwp

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CentOS users: please try and provide feedback on Fedora Boltron
by Matthew Miller 05 Aug '17

05 Aug '17

Please take a look at http://www.itworld.com/article/3211046/linux/red-hats-boltron-snaps-togethe… and https://fedoramagazine.org/announcing-boltron/ which has a walkthrough questionnaire at the bottom. Your feedback very appreciated. -- Matthew Miller <mattdm(a)fedoraproject.org> Fedora Project Leader

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ipa rpm conflicts
by lejeczek 04 Aug '17

04 Aug '17

does anybody see this: unning transaction Warning: RPMDB altered outside of yum. ** Found 8 pre-existing rpmdb problem(s), 'yum check' output follows: ipa-admintools-4.4.0-14.el7.centos.noarch has installed conflicts freeipa-admintools: ipa-admintools-4.4.0-14.el7.centos.noarch ipa-client-4.4.0-14.el7.centos.x86_64 has installed conflicts freeipa-client: ipa-client-4.4.0-14.el7.centos.x86_64 ipa-client-common-4.4.0-14.el7.centos.noarch has installed conflicts freeipa-client-common: ipa-client-common-4.4.0-14.el7.centos.noarch ipa-common-4.4.0-14.el7.centos.noarch has installed conflicts freeipa-common: ipa-common-4.4.0-14.el7.centos.noarch ipa-python-compat-4.4.0-14.el7.centos.noarch has installed conflicts freeipa-python-compat: ipa-python-compat-4.4.0-14.el7.centos.noarch ipa-server-4.4.0-14.el7.centos.x86_64 has installed conflicts freeipa-server: ipa-server-4.4.0-14.el7.centos.x86_64 ipa-server-common-4.4.0-14.el7.centos.noarch has installed conflicts freeipa-server-common: ipa-server-common-4.4.0-14.el7.centos.noarch ipa-server-dns-4.4.0-14.el7.centos.noarch has installed conflicts freeipa-server-dns: ipa-server-dns-4.4.0-14.el7.centos.noarch this in .rpm I guess and started appearing after upg to 7.3. *freeipa* is naming convention Fedora uses, right? Some remnants rebase did not take care of? regards, L.

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Centos7 System Storage Manager: Device /dev/sdc not found
by johan.vermeulen7＠telenet.be 03 Aug '17

03 Aug '17

Hello All, I 've gotten myself into trouble by running out of disk space. On an all-in-one Ovirt system some users have filled up a Windows7 virtual machine and in doing so filled up an nfs mount and in doing so filled up a root partition: B estandssysteem Grootte Gebruikt Besch Geb% Aangekoppeld op /dev/mapper/centos-root 50G 46G 4,8G 91% / devtmpfs 7,9G 0 7,9G 0% /dev tmpfs 7,9G 0 7,9G 0% /dev/shm tmpfs 7,9G 8,5M 7,9G 1% /run tmpfs 7,9G 0 7,9G 0% /sys/fs/cgroup /dev/md127 498M 106M 393M 22% /boot /dev/mapper/centos-home 20G 33M 20G 1% /home /dev/mapper/centos-var 360G 623M 360G 1% /var hotelcaw:/mnt/iso 50G 46G 4,8G 91% /rhev/data-center/mnt/hotelcaw:_mnt_iso tmpfs 1,6G 0 1,6G 0% /run/user/0 I tried to remedy that today by using ssm to add storage. I added an extra disk witch shows up as sdc: [ root@hotelcaw ~]# ssm list ---------------------------------------------------------------- Device Free Used Total Pool Mount point ---------------------------------------------------------------- /dev/md126 208.00 MB 437.84 GB 438.05 GB centos /dev/sda 465.76 GB PARTITIONED /dev/sda1 0.00 KB 500.94 MB 501.00 MB md /dev/sda2 0.00 KB 438.05 GB 438.18 GB md /dev/sdb 465.76 GB /dev/sdb1 0.00 KB 500.94 MB 501.00 MB md /dev/sdb2 0.00 KB 438.05 GB 438.18 GB md /dev/sdc 465.76 GB ---------------------------------------------------------------- ------------------------------------------------------ Pool Type Devices Free Used Total ------------------------------------------------------ centos lvm 1 208.00 MB 437.84 GB 438.05 GB ------------------------------------------------------ ------------------------------------------------------------------------------------- Volume Pool Volume size FS FS size Free Type Mount point ------------------------------------------------------------------------------------- /dev/centos/swap centos 7.88 GB linear /dev/centos/root centos 50.00 GB xfs 49.98 GB 4.83 GB linear / /dev/centos/home centos 20.01 GB xfs 20.00 GB 20.00 GB linear /home /dev/centos/var centos 359.96 GB xfs 359.79 GB 359.23 GB linear /var /dev/md126 md 438.05 GB raid1 /dev/md127 md 500.94 MB xfs 497.61 MB 417.29 MB raid1 /boot /dev/sda1 md 501.00 MB xfs 497.61 MB 417.29 MB part /dev/sdb1 md 501.00 MB xfs 497.61 MB 417.29 MB ------------------------------------------------------------------------------------- now adding /dev/sdc to pool centos fails with: [root@hotelcaw ~]# ssm add -p centos /dev/sdc Device /dev/sdc not found (or ignored by filtering). Unable to add physical volume '/dev/sdc' to volume group 'centos'. SSM Error (2012): ERROR running command: "lvm vgextend centos /dev/sdc" I did a format 0 on the hard drive that makes up /dev/sdc with: dd if=/dev/zero of=/dev/sdc bs=8M I suspect I need to prepare it further before it can be added. Can anyone advise me on this issue? Many Thanks J.

2 1

CentOS SDR Support
by Chris Olson 02 Aug '17

02 Aug '17

Several weeks ago, we posted a message seeking information about time sources. There were many helpful and educational responses. An excerpt from one of the responses is included below. We have been following up with regard to how SDR capabilities might be used for obtaining time using SDR dongles as well as using the time source product referenced in that response. Our SDR investigation has yielded many sources of information, but not a source dedicated to CentOS support for SDR products. Is there a CentOS subgroup and mail list directly involved with SDR device or system support? The SDR information resulting from our search has many references to ADS-B and the P3. It is almost like one absolutely must have a P3 to make use of SDR products. One thing that we did not find was any reference at all to SDR products and software for monitoring the frequencies used by recreational Remote Controlled Aircraft. Thanks again for all the helpful system time responses.

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Timemaster systemd
by Phil Manuel 02 Aug '17

02 Aug '17

Hi, If I run timemaster from systemd it fails with:- Aug 02 06:07:41 machinename timemaster[19230]: [1494069.352] process 19231 started: /usr/sbin/chronyd -u chrony -n -f /var/run/timemaster/chrony.conf Aug 02 06:07:41 machinename timemaster[19230]: [1494069.352] process 19232 started: /usr/sbin/ptp4l -l 5 -f /var/run/timemaster/ptp4l.0.conf -H -i eno1 Aug 02 06:07:41 machinename timemaster[19230]: [1494069.352] process 19233 started: /usr/sbin/phc2sys -l 5 -a -r -R 1.00 -z /var/run/timemaster/ptp4l.0.socket -n 0 -E ntpshm -M 0 Aug 02 06:07:41 machinename chronyd[19231]: chronyd version 2.1.1 starting (+CMDMON +NTP +REFCLOCK +RTC +PRIVDROP +DEBUG +ASYNCDNS +IPV6 +SECHASH) Aug 02 06:07:41 machinename chronyd[19231]: Fatal error : shmget() failed Aug 02 06:07:41 machinename timemaster[19230]: [1494069.353] received signal 17 Aug 02 06:07:41 machinename timemaster[19230]: Fatal error : shmget() failed Aug 02 06:07:41 machinename timemaster[19230]: [1494069.354] process 19231 terminated with status 1 Aug 02 06:07:41 machinename ptp4l[19232]: [1494069.353] driver changed our HWTSTAMP options Aug 02 06:07:41 machinename ptp4l[19232]: [1494069.354] tx_type ?? 1 not 1 Aug 02 06:07:41 machinename ptp4l[19232]: [1494069.354] rx_filter 1 not 12 Aug 02 06:07:41 machinename ptp4l[19232]: [1494069.354] port 1: INITIALIZING to LISTENING on INITIALIZE Aug 02 06:07:41 machinename ptp4l[19232]: [1494069.354] port 0: INITIALIZING to LISTENING on INITIALIZE Aug 02 06:07:41 machinename timemaster[19230]: [1494069.354] process 19232 terminated with status 0 Aug 02 06:07:41 machinename timemaster[19230]: [1494069.354] process 19233 terminated abnormally Aug 02 06:07:41 machinename timemaster[19230]: [1494069.354] exiting Aug 02 06:07:41 machinename systemd[1]: timemaster.service: main process exited, code=exited, status=1/FAILURE Aug 02 06:07:41 machinename systemd[1]: Unit timemaster.service entered failed state. Aug 02 06:07:41 machinename systemd[1]: timemaster.service failed. The timemaster unit file is simple:- Unit] Description=Synchronize system clock to NTP and PTP time sources After=chronyd.service ntpd.service ntpdate.service sntp.service Conflicts=chronyd.service ntpd.service phc2sys.service ptp4l.service [Service] Type=simple ExecStart=/usr/sbin/timemaster -f /etc/timemaster.conf [Install] WantedBy=multi-user.target and If I run "/usr/sbin/timemaster -f /etc/timemaster.conf" all works perfectly. So it must be something related to sharedmemory and systemd. Anyone have any ideas ? Thanks Phil ~

1 0

claiming unsused space back
by Miguel González 01 Aug '17

01 Aug '17

Hi, I´m running a CentOS server in a VPS. Backups of the VPS take quite much space if I don´t claim unused space. Currently I´m using dd if=/dev/zero of=/mytempfile and remove that file to claim that unused space. Any automatic way of doing a similar thing in CentOS? I have googled for it but I have only found Debian commands. Thanks in advance! Miguel

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Discuss August 2017