Discuss August 2016

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131 participants
136 discussions

migrate openldap to centos 7 server..
by Jason Welsh 23 Aug '16

23 Aug '16

I hope this isnt terribly off-topic, but Im trying to migrate openldap from an old 32bit install of gentoo linux to 64bit centos 7. Ive searched and found all kinds of info on migrating, but none if it seems to work completely for me. It seems that the newer centos 7 opendlap config doesnt use the slapd.conf file any more. So It appears I need two ldif files. one for the config and one for the actual database? on the old server if I do (as root) slapcat -n 0 , i get the error slapcat: could not open database. but I was able to get a dump of the (non-config) database with slapcat -n 1, but I cant import that ldif on the new centos 7 server without the config part... anyone know what the right procedure for this would be ? regards, Jason

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GRUB 2 dumps to grub prompt when installed on >4TB disk
by James A. Peltier 23 Aug '16

23 Aug '16

Hi All, I have a Dell R710 that has 6x1TB in a RAID-5 configuration. When installing CentOS 7 using the full disk capacity and booting in UEFI mode the machine dumps me into a GRUB rescue mode prompt. error: disk `,gpt2' not found Entering rescue mode... grub rescue> If I use the PERC RAID controller to make the disk smaller ROOTDISK volume of 100GB in size and then a DATA volume of the rest of the disk the system boots just fine so this seems like a GRUB2 issue. Any thoughts? -- James A. Peltier IT Services - Research Computing Group Simon Fraser University - Burnaby Campus Phone : 604-365-6432 Fax : 778-782-3045 E-Mail : jpeltier(a)sfu.ca Website : http://www.sfu.ca/itservices Twitter : @sfu_rcg Powering Engagement Through Technology

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dm-0: WRITE SAME failed. Manually zeroing
by correomm 23 Aug '16

23 Aug '16

Hello In a VM with CentOS 7, kernel 3.10.0-327.28.3.el7.x86_64, the console root login shows "[ 72.776182] dm-0: WRITE SAME failed. Manually zeroing". What is wrong? Regards, MM

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CentOS 7, memory hungry (2.5GB) without user and heavy services running
by correomm 23 Aug '16

23 Aug '16

Hello, The last weekend, the VM with CentOS 7 (kernel-3.10.0-327.28.2.el7.x86_64) was running with 2.5GB of used memory, but without users connected, and heavy services running. Three minutes after reboot, the o.s. is running with 114MB used. ¿Why the 62% of memory is used if the o.s. does not have an intensive load? top sorted by memory: top - 12:55:34 up 8 days, 21:41, 1 user, load average: 0.16, 0.74, 0.49 Tasks: 90 total, 1 running, 89 sleeping, 0 stopped, 0 zombie %Cpu0 : 0.0 us, 0.0 sy, 0.0 ni,100.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem : 3882816 total, 310948 free, 2639892 used, 931976 buff/cache KiB Swap: 7815164 total, 7815164 free, 0 used. 825004 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 579 root 20 0 323592 23168 6232 S 0.0 0.6 0:30.07 firewalld 1110 root 20 0 553052 18264 5624 S 0.0 0.5 3:29.65 tuned 720 polkitd 20 0 530364 10900 4736 S 0.0 0.3 0:12.84 polkitd 587 root 20 0 250252 8060 4800 S 0.7 0.2 20:48.88 vmtoolsd 692 root 20 0 436892 7988 6156 S 0.0 0.2 0:12.36 NetworkManager 1 root 20 0 273832 7128 3820 S 0.0 0.2 2:20.92 systemd 577 root 20 0 210456 5488 3708 S 0.0 0.1 0:03.85 abrtd 26833 root 20 0 143008 5436 4148 S 0.0 0.1 0:13.47 sshd 487 root 20 0 46424 5112 2652 S 0.0 0.1 0:02.26 systemd-udevd 592 root 20 0 207976 4480 3124 S 0.0 0.1 0:02.31 abrt-watch-log 1806 postfix 20 0 93512 4088 3028 S 0.0 0.1 0:02.80 qmgr 470 root 20 0 129132 3956 2456 S 0.0 0.1 0:00.02 lvmetad 580 root 20 0 445712 3888 3156 S 0.0 0.1 1:00.74 rsyslogd 26950 postfix 20 0 93328 3848 2840 S 0.0 0.1 0:00.11 pickup 1112 root 20 0 82560 3544 2688 S 0.0 0.1 1:02.99 sshd 26837 root 20 0 116160 2976 1732 S 0.0 0.1 0:01.94 bash 719 root 20 0 53064 2644 2052 S 0.0 0.1 0:00.25 wpa_supplicant 26783 root 20 0 178108 2448 1520 S 0.0 0.1 0:00.07 crond 578 root 20 0 130060 2184 1672 S 0.0 0.1 0:00.66 smartd 1801 root 20 0 93224 2168 1116 S 0.0 0.1 0:11.25 master 27041 root 20 0 157688 2128 1448 R 1.4 0.1 0:00.51 top 581 dbus 20 0 37112 2116 1392 S 0.0 0.1 0:28.27 dbus-daemon 26968 root 20 0 36820 2076 1812 S 0.0 0.1 0:00.69 systemd-journal 608 chrony 20 0 115844 1860 1448 S 0.0 0.0 0:14.59 chronyd 586 root 20 0 26448 1700 1348 S 0.0 0.0 0:46.24 systemd-logind 615 root 20 0 126336 1680 1028 S 0.0 0.0 0:21.39 crond 555 root 16 -4 116724 1604 1208 S 0.0 0.0 0:33.97 auditd 26787 root 20 0 113120 1404 1220 S 0.0 0.0 0:00.05 freshclam-sleep 620 root 20 0 25964 952 752 S 0.0 0.0 0:00.62 atd 18160 root 20 0 110036 816 692 S 0.0 0.0 0:00.18 agetty 601 libstor+ 20 0 8532 780 632 S 0.0 0.0 0:10.61 lsmd 26792 root 20 0 107896 620 528 S 0.0 0.0 0:00.00 sleep 2 root 20 0 0 0 0 S 0.0 0.0 0:00.24 kthreadd 3 root 20 0 0 0 0 S 0.0 0.0 0:06.40 ksoftirqd/0 # netstat -nao Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State Timer tcp 0 0 127.0.0.1:10025 0.0.0.0:* LISTEN off (0.00/0/0) tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN off (0.00/0/0) tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN off (0.00/0/0) tcp 0 64 ip.ad.dr.ess:22 my.ip.by.myisp:50470 ESTABLISHED on (0.26/0/0) tcp6 0 0 :::22 :::* LISTEN off (0.00/0/0) tcp6 0 0 ::1:25 :::* LISTEN off (0.00/0/0) udp 0 0 127.0.0.1:323 0.0.0.0:* off (0.00/0/0) udp6 0 0 ::1:323 :::* off (0.00/0/0) raw6 0 0 :::58 :::* 7 off (0.00/0/0) Active UNIX domain sockets (servers and established) Proto RefCnt Flags Type State I-Node Path unix 2 [ ACC ] STREAM LISTENING 9979 /run/lvm/lvmpolld.socket unix 2 [ ACC ] STREAM LISTENING 9988 /run/lvm/lvmetad.socket unix 2 [ ] DGRAM 6664 /run/systemd/notify unix 2 [ ACC ] STREAM LISTENING 17787 private/tlsmgr unix 2 [ ACC ] STREAM LISTENING 17790 private/rewrite unix 2 [ ACC ] STREAM LISTENING 17793 private/bounce unix 2 [ ACC ] STREAM LISTENING 6676 /run/systemd/journal/stdout unix 2 [ ACC ] STREAM LISTENING 17796 private/defer unix 2 [ ACC ] STREAM LISTENING 17799 private/trace unix 5 [ ] DGRAM 6679 /run/systemd/journal/socket unix 2 [ ACC ] STREAM LISTENING 17802 private/verify unix 11 [ ] DGRAM 6681 /dev/log unix 2 [ ACC ] STREAM LISTENING 17805 public/flush unix 2 [ ACC ] STREAM LISTENING 17808 private/proxymap unix 2 [ ACC ] STREAM LISTENING 17811 private/proxywrite unix 2 [ ACC ] STREAM LISTENING 17814 private/smtp

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yum does not recognise new (updated) packages due to underscore in package name
by Felix Scheffler 23 Aug '16

23 Aug '16

Hi all, we are currently working on porting software from x86_64 to aarch64. We are working with the altarch aarch64 repos: http://mirror.centos.org/altarch/7/os/aarch64/Packages/ http://mirror.centos.org/altarch/7/extras/aarch64/Packages/ http://mirror.centos.org/altarch/7/updates/aarch64/Packages/ However, it seems that yum (and eventually rpm) has problems with identifying new packages, if you have packages named as: <name>-<version>-<release>.el7_x.y.<arch>.rpm <name>-<version>-<release>.el7.y.<arch>.rpm A concrete example is the package selinux-policy-3.13.1-60.el7.3.noarch.rpm in the os repo. It has an updated package (selinux-policy-3.13.1-60.el7_2.7.noarch.rpm) in the updates repo. However, the underscore seems to be interpreted as a dot and hence leads to the package located in the os repo to be considered as newer. Maybe, this was tried to be addressed by also copying a corresponding version selinux-policy-3.13.1-60.el7_2.3.noarch.rpm into the os repo. However, this of course is also regarded as older (for the same reason) and thus still leads to the initial package to have precedence. Do I miss out on something here? In addition, it might well be that this is not only an issue to the aarch64 repos, but also to other architectures. Is it a known issue and if yes, are there any attempts to correct this? As from what I can tell so far, it is not a problem of yum or rpm, but some inconsistencies in naming the packages in the centos repos. Other sources of information: http://superuser.com/questions/427065/what-comes-after-the-underscore-in-an… http://blog.jasonantman.com/2014/07/how-yum-and-rpm-compare-versions/ https://fedoraproject.org/wiki/Archive:Tools/RPM/VersionComparison Thanks in advance for your help. Best regards Felix

1 0

GPG key issue for epel-release on ppc64le platform
by Manjunath A Kumatagi 23 Aug '16

23 Aug '16

Hi, I've installed centos 7 and updated the packages and trying to install the epel-release package and hit with following error: [root@localhost ~]# yum info epel-release Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile Available Packages Name : epel-release Arch : noarch Version : 7 Release : 5 Size : 14 k Repo : extras/7/ppc64le Summary : Extra Packages for Enterprise Linux repository configuration URL : http://download.fedoraproject.org/pub/epel License : GPLv2 Description : This package contains the Extra Packages for Enterprise Linux : (EPEL) repository GPG key as well as configuration for yum. [root@localhost ~]# yum install epel-release Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile Resolving Dependencies --> Running transaction check ---> Package epel-release.noarch 0:7-5 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: epel-release noarch 7-5 extras 14 k Transaction Summary ================================================================================ Install 1 Package Total download size: 14 k Installed size: 24 k Is this ok [y/d/N]: y Downloading packages: warning: /var/cache/yum/ppc64le/7/extras/packages/epel-release-7-5.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID 352c64e5: NOKEY Public key for epel-release-7-5.noarch.rpm is not installed epel-release-7-5.noarch.rpm | 14 kB 00:00 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-AltArch-7-ppc64le The GPG keys listed for the "CentOS-7 - Extras" repository are already installed but they are not correct for this package. Check that the correct key URLs are configured for this repository. Failing package is: epel-release-7-5.noarch GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7, file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-AltArch-7-ppc64le [root@localhost ~]# Thanks, Manjunath.

1 0

Canon scanner LiDE 220
by J Martin Rushton 22 Aug '16

22 Aug '16

This scanner is supported according to the SANE page, but doesn't work on my up-to-date C7 system (updated 20 minutes ago). The Canon web site is as expected - as useful as a chocolate tea pot. Has anyone managed to get this to run, and if so can you share the secret please.

5 7

EPEL packages for CentOS 7 i686 AltArch distro
by Johnny Hughes 22 Aug '16

22 Aug '16

I have begun building the EPEL packages for the CentOS 7 i686 AltArch distribution. You can watch the progress here: http://buildlogs.centos.org/c7-epel/ Should have most of the packages built in the next couple days. Thanks, Johnny Hughes

3 3

Sound failure in CentOS 6.8
by j_post 21 Aug '16

21 Aug '16

Sound stopped working on my CentOS 6.8 system several months ago. I've tried everything I can to find out what's wrong. It is not the hardware; if I boot into a live dvd of 6.8 (or any other OS), the sound works perfectly. So something must have changed in my configuration. I've compared files on my system and another CentOS 6.8 system with working sound and I haven't found any differences relating to sound configuration. I've scoured the web for help, and found a few sites where people reported the same problem, but none of their "solutions" work. Many refer to sndconfig and system-config-soundcard which don't exit in 6.8. I've spent countless hours looking through alsa (and other) documentation for any hints that might help. Nothing. If I crank up the volume on the speakers, and set kmixer to max, I hear a low level of white noise coming from the speakers. This noise does not occur when I first boot up, but kicks in somewhere during the boot process, I'm guessing when the system is attempting to initialize the sound card. The only substantial info I have about the failure is the output from KInfoCenter -> Sound: -------------- Sound Driver:3.8.1a-980706 (ALSA v1.0.24 emulation code) Kernel: Linux 2.6.32-642.3.1.el6.x86_64 #1 SMP Tue Jul 12 18:30:56 UTC 2016 x86_64 Config options: 0 Installed drivers: Type 10: ALSA emulation Card config: HDA Intel PCH at 0xfbff8000 irq 33 HDA NVidia at 0xfaffc000 irq 17 Audio devices: NOT ENABLED IN CONFIG Synth devices: NOT ENABLED IN CONFIG Midi devices: NOT ENABLED IN CONFIG Timers: 31:system timer Mixers: NOT ENABLED IN CONFIG --------------- I have no idea what "CONFIG" it's referring to. A gigantic "thank you" to anyone who can help resolve this problem. Jeff

2 5

running CGI scripts with SELinux=ENFORCING with priviledged commands ...
by Walter H. 21 Aug '16

21 Aug '16

Hello, how could it be achieved to run e.g. shutdown -h now from a CGI script on a system where SELinux is set to ENFORCING? Thanks Walter

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Discuss August 2016