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34747 discussions

usb drives & Orico ORICO 9548U3-BK
by Gregory P. Ennis 19 Feb '17

19 Feb '17

Everyone, Is there a way to manually assign usb drives to a specified device label. Is there a way to force two usb drives to be labeled as /dev/sdc and /dev/sdd? I decided to build an archive server for the purpose of backing up other fedora/centos desktops at the office. I built a machine and have installed Centos 7.3 on it with all updates current. I also purchased a 3.0 usb sata drive cabinet (Orico ORICO 9548U3-BK) and installed two 5T black WD drives. There was no problem installing the usb cabinet or the drives. I formatted each drive with xfs as /dev/sdc and /dev/sdd, and then combined them into a software mirrored raid with mdadm as /dev/md0. Everything was working perfectly until I removed the terminal, keyboard and mouse and tried to reboot the machine. It took a while to figure out, but when the mouse and keyboard were removed the boot process assigns the usb drives differently which makes /dev/md0 created by mdadm fail. My fstab file looks like : /dev/mapper/centos_poar-root / xfs defaults 0 0 UUID=f915a354-28bf-4110-bec9-3767ef1fe52c /boot xfs defaults 0 0 /dev/mapper/centos_poar-home /home xfs defaults 0 0 /dev/mapper/centos_poar-u /u xfs defaults 0 0 /dev/mapper/centos_poar-swap swap swap defaults 0 0 /dev/sda /u0 btrfs defaults 0 0 # entries below were combined into one mirrored raid system #/dev/sdc /u1 xfs defaults 0 0 #/dev/sdd /u2 xfs defaults 0 0 /dev/md0 /u1 xfs defaults 0 0 This works perfectly when a usb mouse and a usb keyboard are attached, but when I remove the mouse and keyboard the system will not boot because the usb drives are relabeled as /dev/sda and /dev/sdb. The only way I have been able to make this archive server function is to keep a mouse and keyboard plugged in to the system, and even with the keyboard and mouse attached I can not do a software reboot, I am required to turn off the power supply for a couple of seconds and then turn it back on before I hit the power switch on the computer. I have played with the bios setting until my eyes are blurry, but have not been able to solve the problem. I am using a ASUS H110M-E/M.2 LGA 1151 Intel H110 HDMI SATA 6Gb/s USB 3.0 Micro ATX Motherboard. My thought is that if I could force the usb drives to be labeled as /dev/sdc and /dev/sdd whether the mouse and keyboard are attached or not, I might be able to fix the problem Anyone have any ideas? Thanks for your responses!!!! Greg Ennis

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RAID questions
by tdukes＠palmettoshopper.com 19 Feb '17

19 Feb '17

Hello, Just a couple questions regarding RAID. Here's thesituation. I bought a 4TB drive before I upgraded from 6.8 to 7.3. I'm not too far into this that Ican't start over. I wanted disk space to backup 3 other machines. I way overestimated what I needed for full, incremental and image backups with UrBackup.I've used less than 1TB so far. I would like to add an additional drive to makeit a RAID server. I may use a PCIe SSD for the boot drive if I can find onecompatible with my old hardware. 1- Better to go with a hardware RAID (mainboardsupported) or software? 2 - Can an existing drive with data on it be used as aRAID drive without losing current data? 3 - Can additional drive(s) be added later with a changein RAID level without current data loss? TIA

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Require option in Apache
by Robert Moskowitz 19 Feb '17

19 Feb '17

So I have read everything that my search foo can find on the require option. I want to specify IP addresses. The only examples I am finding are in: http://httpd.apache.org/docs/2.4/howto/auth.html And only IPv4 addresses and only dotted aggregation. No IPv6 examples and no CIDR aggregation examples. In fact, no IPv6 examples at all. So can anyone point me to some more information on specifying IP addresses with this new require option? thanks

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getting files from a samsung flip phone
by Michael Hennebry 18 Feb '17

18 Feb '17

I'm trying to copy file from my samsung flip phone. google has informed me of libmtp and gvfs, but it doesn't seem to be helping. [root@localhost yum.repos.d]# mtp-detect libmtp version: 1.0.1 Listing raw device(s) No raw devices found. [root@localhost yum.repos.d]# In case it helps, I did a diff of ls -R from /dev before and after USB connection: [hennebry@localhost dev]$ diff /tmp/dev[12].txt | tee /tmp/dev.dif 89a90 > serial 166a168 > ttyACM0 257a260 > 011 330a334 > 166:0 336a341 > 189:138 577a583,592 > ./serial: > by-id > by-path > > ./serial/by-id: > usb-SAMSUNG_Electronics_Bo._Ltd._Samsung_SCH-u365-if00 > > ./serial/by-path: > pci-0000:00:1d.7-usb-0:2.4:1.0 > [hennebry@localhost dev]$ Any ideas? -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

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Centos 7: .tons of messages logs (systemd-logind[663]: Got message type....)
by Dario Lesca 18 Feb '17

18 Feb '17

On my Centos 7 update, into "journalctl -f" I have tons of this kind of message > feb 17 23:52:09 s-ispc.local systemd-logind[663]: Got message type=signal sender=:1.0 destination=n/a object=/org/freedesktop/systemd1/unit/php_2dfpm_2eservice interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=17152 reply_cookie=0 error=n/a > feb 17 23:52:09 s-ispc.local systemd-logind[663]: Got message type=signal sender=:1.0 destination=n/a object=/org/freedesktop/systemd1/unit/php_2dfpm_2eservice interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=17153 reply_cookie=0 error=n/a > feb 17 23:52:11 s-ispc.local systemd-logind[663]: Got message type=signal sender=:1.0 destination=n/a object=/org/freedesktop/systemd1/unit/httpd_2eservice interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=17154 reply_cookie=0 error=n/a > feb 17 23:52:11 s-ispc.local systemd-logind[663]: Got message type=signal sender=:1.0 destination=n/a object=/org/freedesktop/systemd1/unit/httpd_2eservice interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=17155 reply_cookie=0 error=n/a And into /var/log/messages I have this warning message: > rsyslogd-2177: imjournal: begin to drop messages due to rate-limiting What is happening? It is possible to stop this message? Many thanks -- Dario Lesca (inviato dal mio Linux Fedora 25 Workstation)

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Oracle support 12c
by Silva-Borrego, Mario, DPS 17 Feb '17

17 Feb '17

All, I know it might sound a repetitive question although I have not found anything to help me online. Anyone knows if Oracle support will support CentOS with Oracle 12c? I know RHEL 6 & 7 is listed as supported OS, but I want to double check if that includes CentOS 6 & 7. The reason I am asking is because I want to migrate all servers I am receiving from old management to CentOS, currently is a mixed between SLES and RHEL Any insight will be appreciated Thank you, ms Mario Silva IT Systems Administrator New Mexico Department of Public Safety Information Technology Division 4491 Cerrillos Road P.O. Box 1628 Santa Fe NM 87507-1628 Phone: (505) 827-3430 Cell: (505) 670-1824 Email: Mario.Silva(a)state.nm.us

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Centos 7 httpd Permission problems with Postfixadmin
by Robert Moskowitz 17 Feb '17

17 Feb '17

More joy with Centos 7. I am having permission problems with Postfixadmin. I am installing as I have in my notes I did in Centos6 and it is not working. I untar Postfixadmin into /usr/share. The owner is root:root (I even tried root:apache). My postfixadmin.conf file has: alias /mailadmin /usr/share/postfixadmin <Directory "/usr/share/postfixadmin"> AllowOverride AuthConfig </Directory> And I get when I try fqdn/mailadmin You don't have permission to access /mailadmin on this server. When I google this message, I am getting that httpd is not allowing me access. I have even added: allow from all To the above .conf with no change. This is not a SELInux problem as I tried 'setenforce 0' and still get the error. It is as if there is some new security setting in httpd for files not in the www dir (default of /var/www/). Any ideas? thanks

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current situation with flash plugins?
by Michael Hennebry 17 Feb '17

17 Feb '17

Is Adobe the only provider of flash plugins? Is it still a gaping security hole? Do the answers depend on the browser? -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

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Working on installing mailgraph on Centos7-arm - challenges with rpms
by Robert Moskowitz 17 Feb '17

17 Feb '17

One of the joys with getting a little ahead of where epel-armv7hl is, is trying to install packages where not all the dependencies have been debugged. So I am trying to install mailgraph, that i get the noarch rpm from Centos7-x86_64. But it needs RRD which I actually got from the armv7hl building; it just did not make it to the repo. But it wants libpango and libpangocairo. I can't find what provides those. They are not anywhere available to my Fedora 24 notebook and I don't have any 'normal' Centos7 system these days. thanks

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GCC 4.9 in CentOS 7 ??
by Alice Wonder 17 Feb '17

17 Feb '17

The following features of the C++11/C++14 standards are not supported by g++: * std::make_unique function (C++14) * digit separators (C++14) * binary literals (C++14) * generic lambdas (C++14) If you are using the GNU C compiler collection (gcc) then you need at least v4.9.x. configure: error: support for required C++11/C++14 features incomplete Is there by chance a compat package for gcc 4.9.x available? I didn't see it in a yum list. I'm trying to build the latest mkvtoolnix and it looks like CentOS 7 gcc is just barely too old :-/

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