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Centos 7 - how to resurrect /dev/fb0? Or an alternative to fbterm for 256 color tty terminals?
by Nick Cammorato 09 Aug '16

09 Aug '16

Hi Everyone! I've been trying to rediscover the lost art of appliance-ification. SystemD is actually pretty amenable to masking tty1 and spawning a program instead of login which makes a config console a rather easy thing to do (mostly). Have that bit done, no problem. Happily spawning a rather locked down program. However, you seem to be limited in terms of color palette, creating a new take on the classic how do you get a 256 color terminal on a tty problem (the related, how do you change the terminal resolution problem seems solved via boot param). The old way(that I used) was to just wrap whatever in fbterm, but fbterm is missing. I can compile and package and install it no problem, but apparently there's no longer a framebuffer for it to attach to - /dev/fb0 is gone - so it can't actually run. There doesn't appear to be anything that would create /dev/fb0 either - It looks like nothing was compiled into the default kernel. The vga16fb module is available if you install a xen kernel from centos-xen, but it's 16 colors. vmwgfx doesn't seem to make a framebuffer either, and it's questionable if that'll work across both virtualbox and vmware in any case. An alternative would be to use xvfb or some such but that's super overweight. So, finally, a question - does anyone know how you solve this today? Best, --Nick Cammorato

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centos 7- boot doesn't wait for startup script to complete
by KM 09 Aug '16

09 Aug '16

Hi All,I have a general question. I have an old rc type startup script that I am still using on CentOS 7. I got it to run by creating the systemd service file... a simple one as shown below, for Myservices. # used to set up the Myservices onstartup[Unit]Description=Start and stop Myservices[Service]Type=oneshotExecStart=/etc/init.d/Myservices startExecStop=/etc/init.d/Myservices stopRemainAfterExit=yes[Install]WantedBy=multi-user.targetThis works. When the server starts Myservices is initiated. However the boot keeps going. When I log in Myservices is still running. it takes about 5 minutes to complete. This is normal. What is different is the boot up used to wait for the service to finish and then continue. Can I use any options in my service file shown above, to make it wait before finishing the boot up? ThanksKM

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Localedef runs but doesn't change locale
by Zach Aufdemberge 09 Aug '16

09 Aug '16

Hello everyone, When I run the command localedef -c -i en_GB -f UTF-8 en_GB.utf-8 the command runs with no errors but running locale still shows: LANG=en_US.UTF-8 LANGUAGE=en_US LC_CTYPE="en_US.UTF-8" LC_NUMERIC="en_US.UTF-8" LC_TIME="en_US.UTF-8" LC_COLLATE="en_US.UTF-8" LC_MONETARY="en_US.UTF-8" LC_MESSAGES="en_US.UTF-8" LC_PAPER="en_US.UTF-8" LC_NAME="en_US.UTF-8" LC_ADDRESS="en_US.UTF-8" LC_TELEPHONE="en_US.UTF-8" LC_MEASUREMENT="en_US.UTF-8" LC_IDENTIFICATION="en_US.UTF-8" LC_ALL= I rebooted the machine just in case, that didn't help Running locale -a shows many options including en_GB and en_GB.utf-8 The only way that I have been able to change the locale is by editing /etc/sysconfig/i18n. If I change that and then reboot it changes the locale. However what confuses me about this is that I can only change to a new locale, I can't seem to go back to a previous locale. For example, I started with en_US, changed it to en_GB which worked. Then I tried to change it back to en_US and nothing happened. After that I decided to try to see if it was only failing with en_US or if it would always fail. So I tried changing from en_GB to en_NZ which worked. Then I tried to go from en_NZ to en_US which failed. At this point I don't care as much about getting the right locale. I just want to know why it will change to something new, but not change back to a previous locale. I have tested this on 6.4, 6.5, and 6.8 and get the same results. First I was running it on a VM using QEMU and VMM but I tried it on a physical machine and nothing changed. All of these were fresh installs, the first thing I did after completing the install was try to change the locale. Any advice or explanation is appreciated, thanks in advance. Zach

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LSI SATA MegaRaid & Centos 7 build 1511
by Fawzy Ibrhim 09 Aug '16

09 Aug '16

Dear All; I want to install Centos 7 latest build on NEC Server 5800/120b-2. The installation wizard fails to detect the storage connected to LSI SATA MegaRaid PCI. Centos 5/6 were working fine with this H/W configuration but not the case with Centos 7. Please; advise. Fawzy Ibrahim Redhat Certified Engineer

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Does e2fsck.conf contain "broken_system_clock = 1" per default on CentOS7?
by Gabriele Pohl 09 Aug '16

09 Aug '16

Hi, on all of my CentOS7 VMs on different hypervisors the config file e2fsck.conf contains the line broken_system_clock = 1 I found this because on all of them, the root partition was not checked triggered by interval setting with tune2fs. Do you see similiar /default/ settings on your machines? Is it an issue only on VMs? I have no CentOS7 host on bare metal to compare. Thanks and cheers, Gabriele

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centos 6.8 creates install to sde instead of sda
by geo.inbox.ignored 08 Aug '16

08 Aug '16

greetings one and all. when attempting to install centos 6.8 to an i386 mid tower, during setup of hard disk partitions, selection is for /dev/sde. if continued, after reboot, error is displayed after 'welcome to centos'. lines read: Checking filesystem fsck.ext4: no such file or directory while trying to open /dev/sda3 /dev/sda3: The superblock could not be read or does not describe a correct ext2 filesystem. If the device is valid and it really contains an ext2 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsck -h 8193 <device> [FAILED] *** an error occurred during the file system check. *** Dropping you to a shell; the system will reboot *** when you leave the shell. *** Warning -- SELinux is active *** Disabling security enforcement for system recovery. *** Run 'setenforce 1' to reenable. Give root password for maintenance (or type Control-D to continue): entering 'e2fsck -h 8193 /dev/sda3' results with same e2fsck message as above. after reading article; http://www.cyberciti.biz/faq/recover-bad-superblock-from-corrupted-partitio… using command; dumpe2fs /dev/sda3 | grep superblock error message is; dumpe2fs: No such file or directory while trying to open /dev/sda3 Couldn't find valid filesystem superblock. if i enter command; dumpe2fs /dev/sde3 | grep superblock superblock info is shown. why is sde working and not sda? this system has previously held 6.8, but partitioning was off in cylinders so i decided to correct. purchased latest release of partedmagic, booted, created new partitioning by cylinders. under pmagic, when i enter command; dumpe2fs /dev/sda3 | grep superblock superblocks are shown. so, how do i correct what ever to install 6.8 to sda, not sde? any/all answers/suggestions greatly appreciated. tia. -- peace out. CentOS GNU/Linux 7.1511 tc,hago. g . =+= Tired of having your microsoft os hacked? Change to Linux os, used by microsoft hackers. =+= in a world with out fences, who needs gates. =+=

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CentOS automatic installation fails with “Installation Destination” error
by Manjunath A Kumatagi 08 Aug '16

08 Aug '16

Hi, I'm trying to install the centos netboot install on ppc64le platform but automation installation(kickstart) fails with the following error: Starting installer, one moment... find_file: stat /proc/device-tree/chosen/bootpath, No such file or directory anaconda 21.48.22.56-1 for CentOS AltArch 7 started. * installation log files are stored in /tmp during the installation * shell is available on TTY2 * when reporting a bug add logs from /tmp as separate text/plain attachments Starting automated install.......... Generating updated storage configuration storage configuration failed: failed to find a suitable stage1 device ================================================================================ ================================================================================ Installation 1) [x] Language settings 2) [x] Timezone settings (English (United States)) (UTC timezone) 3) [x] Installation source 4) [x] Software selection (http://mirror.centos.org/altar (Custom software selected) ch/7/os/ppc64le/) 6) [x] Kdump 5) [!] Installation Destination (Kdump is enabled)b | Help: F1 (Error checking storage configu ration) 7) [x] Network configuration (Wired (enp0s1) connected) ** (anaconda:1253): WARNING **: Could not open X display The installation was stopped due to incomplete spokes detected while running in non-interactive cmdline mode. Since there cannot be any questions in cmdline mode, edit your kickstart file and retry installation. The exact error message is: The following mandatory spokes are not completed: Installation Destination. The installer will now terminate. [root@llmtul01b qemu]# And kickstart file looks like: url --url="http://mirror.centos.org/altarch/7/os/ppc64le/" install keyboard us rootpw --lock --iscrypted locked timezone --isUtc --nontp UTC selinux --enforcing firewall --disabled network --bootproto=dhcp --device=link --activate --onboot=on reboot bootloader --disable lang en_US # Repositories to use repo --name="CentOS" --baseurl=http://mirror.centos.org/altarch/7/os/ppc64le/ --cost=100 ## Uncomment for rolling builds repo --name="Updates" --baseurl=http://mirror.centos.org/altarch/7/updates/ppc64le/ --cost=100 # Disk setup zerombr clearpart --all --initlabel part / --fstype ext4 --size=3000 Looking for the option to select the installation destination through kickstart file. Thanks, Manjunath.

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Help with Network configuration files
by Matthew Crocker 08 Aug '16

08 Aug '16

Hello, I’m trying to configure a CentOS 7 server to act as a host for a bunch of virtual servers (KVM). I have an 802.3ad bonded Ethernet connected to the server with a bunch of tagged VLANs. I want to be able to build a bridge interface on the server for each VLAN and then attach that to the bond interface and the virtual clients. I also want to attach a host interface to one of the VLANs for access to the host from my Infrastructure network. I have everything working but the host interface, What device do I put into ifcfg-VLAN-OOB to create a new software only interface. Here is what I have so far. EM1-4 are configured as slaves to BOND0 ifcfg-em1: TYPE=Ethernet USERSTL=no MASTER=bond0 NAME=em1 UUID=0ca45a64-70eb-4bfb-bf73-90b221d5fa65 DEVICE=em1 ONBOOT=yes SLAVE=yes ifcfg-em2: TYPE=Ethernet NAME=em2 UUID=d79cc76a-8f38-460c-9430-2ae78b43dc1d DEVICE=em2 ONBOOT=yes MASTER=bond0 USERCTL=no SLAVE=yes ifcfg-em3: TYPE=Ethernet NAME=em3 UUID=9f7cf127-eba2-45e8-95bd-814e6066aa74 DEVICE=em3 ONBOOT=yes MASTER=bond0 USERCTL=no SLAVE=yes ifcfg-em4 TYPE=Ethernet NAME=em4 UUID=53517fa5-9e22-4286-a367-8c91ef6f1883 DEVICE=em4 ONBOOT=yes MASTER=bond0 USERCTL=no SLAVE=yes ifcfg-bond0: DEVICE=bond0 NAME=bond0 TYPE=bond BONDING_MASTER=yes ONBOOT=yes BONDING_OPTS="mode=802.3ad miimon=10 lacp_rate=1" USERCTL=no Bond0 is up, the switch & server are happy all 4 links are live, no errors I created a new bridge: ifcfg-br0: DEVICE=br1 TYPE=BRIDGE ONBOOT=yes NAME=br1 I created a VLAN interface on bond0 and attached it to the bridge ifcfg-bond0.77: DEVICE=bond0.77 BOOTPROTO=none ONBOOT=yes VLAN=yes TYPE=Vlan PHYSDEV=bond0 VLAN_ID=77 NAME="Vlan bond0.77" BRIDGE=br1 UUID=d91d518a-cf03-555f-9837-ef2d2763218b Now, How do I create a new interface ‘VLAN-OOB’, attach it to the bridge and assign an IP address? ifcfg-VLAN-OOB: DEVICE=???????? BOOTPROTO=none ONBOOT=yes NETWORK=10.126.77.0 IPADDR=10.126.77.2 PREFIX=24 GATEWAY=10.126.77.1 DNS1=66.59.48.85 DNS2=66.59.48.86 DOMAIN=crocker.com DEFROUTE=yes NAME=“OOB Management VLAN" BRIDGE=br1 I want to be able to attach virtual-client interfaces to br1 so they can be on the same network. Eventually I’ll have a dozen bridges with different networks (Internet, VOIP, OOB, Backup, etc) Thanks -Matt — Matthew Crocker President - Crocker Communications, Inc. Managing Partner - Crocker Telecommunications, LLC E: matthew(a)corp.crocker.com E: matthew(a)crocker.com

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Broken package
by Alice Wonder 08 Aug '16

08 Aug '16

CentoOS 7 python-cryptography package is at version 0.8.2 It has a build-requires for python-cryptography-vectors of the same version (but different source tarball apparently) There is no python-cryptography-vectors in CentOS 7 base or updates. There is one in EPEL but it is version 0.8 -=- If you relax the BuildRequires to just require python-cryptography-vectors then the build fails because the build script itself checks to see if it is the same version.

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RPM help
by TE Dukes 08 Aug '16

08 Aug '16

Hello, My installation of clamav is hosed up. It won't start due to a malformed database. I ran freshclam and updated the database but still have the problem. I was going to uninstall clamav but there are other app dependencies. Virtualmin is one. How can I do an uninstall/re-install without hosing more stuff up? I have found some examples, --nodeps, --replacepkgs and -replacefiles Also, what is the rpm command that will tell me all packages named clam*. Haven't used it in a while and have forgotten. I tried rpm -q "clam*" but that didn't work. TIA

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