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SOT: Best strategy for automatize a flow that need user interaction
by reynierpm＠gmail.com 29 Jan '16

29 Jan '16

I am working in a Dockerfile but there is a "secure" MariaDB server script I need to run which is interactive and I don't know how to deal with this. Basically this is the flow I have follow on the script at test environment and is the same I want to achieve in the Dockerfile without user interaction by just answering as you seen on the flow below: # /usr/bin/mysql_secure_installation Enter current password for root (enter for none): [ENTER] // because there is no password OK, successfully used password, moving on... Set root password? [Y/n] n ... skipping. Remove anonymous users? [Y/n] Y ... Success! Disallow root login remotely? [Y/n] n ... skipping. Remove test database and access to it? [Y/n] Y - Dropping test database... ... Success! - Removing privileges on test database... ... Success! Reloading the privilege tables will ensure that all changes made so far will take effect immediately. Reload privilege tables now? [Y/n] Y ... Success! Cleaning up... So I need to write a bash script or something else that could handle this automatically but has not idea, how would you take care of this?

3 3

CentOS 7, 327 kernel still crashing
by m.roth＠5-cent.us 29 Jan '16

29 Jan '16

I've just added the following to the CentOS bugtracker for CentOS-7 0009860. I admit to not being sure if it's the same issue, or a separate one, but this and other Dell servers - I *think* they're all R420's, but I could be wrong, just all do the same thing on boot. ***************** I've just updated a CentOS 7 server to the latest kernel, vmlinuz-3.10.0-327.4.5.el7.x86_64, and the server fails to boot. It has failed on every 327 kernel. Server: Dell R420, 2 Xeons, 124G RAM. >From the rdsosreport.txt, the relevant portion is: [ 3.317974] <servername> systemd[1]: Starting File System Check on /dev/disk// by-label/\x2f... [ 3.320089] <servername> systemd-fsck[590]: Failed to detect device /dev/diskk /by-label// [ 3.320567] <servername> systemd[1]: systemd-fsck-root.service: main process exited, code=exited, status=1/FAILURE [ 3.320972] <servername> systemd[1]: Failed to start File System Check on /dee v/disk/by-label/\x2f. [ 3.321423] <servername> systemd[1]: Dependency failed for /sysroot. [ 3.321872] <servername> systemd[1]: Dependency failed for Initrd Root File SS ystem. [ 3.322335] <servername> systemd[1]: Dependency failed for Reload Configuratii on from the Real Root. [ 3.322802] <servername> systemd[1]: Job initrd-parse-etc.service/start failee d with result 'dependency'. [ 3.323266] <servername> systemd[1]: Triggering OnFailure= dependencies of inn itrd-parse-etc.service. [ 3.323697] <servername> systemd[1]: Job initrd-root-fs.target/start failed ww ith result 'dependency'. 3.323266] <servername> systemd[1]: Triggering OnFailure= dependencies of inn itrd-parse-etc.service. [ 3.323697] <servername> systemd[1]: Job initrd-root-fs.target/start failed ww ith result 'dependency'. [ 3.324161] <servername> systemd[1]: Triggering OnFailure= dependencies of inn itrd-root-fs.target. [ 3.324586] <servername> systemd[1]: Job sysroot.mount/start failed with resuu lt 'dependency'. [ 3.324998] <servername> systemd[1]: Unit systemd-fsck-root.service entered ff ailed state. [ 3.325430] <servername> systemd[1]: systemd-fsck-root.service failed. [ 3.326752] <servername> systemd[1]: Stopped dracut pre-pivot and cleanup hooo And it stops, and drops me into the rdshell. Not that I can mkdir /mnt, and mount /dev/sda1, and /boot is there, and I can mount /dev/sda3, and root is there just fine. mark

3 4

Alternative HTML Editor
by Tim Evans 29 Jan '16

29 Jan '16

I've been using the SeaMonkey built-in HTML editor from the epel repo for CentOS 6.7: $ repoquery -i seamonkey Name : seamonkey Version : 2.39 Release : 1.el6 Architecture: x86_64 Size : 127340745 Packager : Fedora Project Group : Applications/Internet URL : http://www.seamonkey-project.org Repository : epel Summary : Web browser, e-mail, news, IRC client, HTML editor Source : seamonkey-2.39-1.el6.src.rpm This is now dumping core. The latest release, directly from Mozilla (2.9b4), fails with: /usr/local/seamonkey/seamonkey-bin: error while loading shared libraries: libdbus-glib-1.so.2: cannot open shared object file: No such file or directory Recommendations for alternative HTML editors for this system? Thanks. -- Tim Evans | 5 Chestnut Court UNIX System Admin Consulting | Owings Mills, MD 21117 http://www.tkevans.com/ | 443-394-3864 tkevans(a)tkevans.com

5 13

Write content to file from Dockerfile and/or any other method
by reynierpm＠gmail.com 29 Jan '16

29 Jan '16

I am building a Dockerfile and I am setting up MariaDB repos as follow: # Setup MariaDB repos RUN touch /etc/yum.repos.d/MariaDB.repo I should write this inside the MariaDB.repo file: [mariadb] name = MariaDB baseurl = http://yum.mariadb.org/5.5/centos6-amd64 gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB gpgcheck=1 What's the right way to do this? The one below? echo "[mariadb]" >> "/etc/yum.repos.d/MariaDB.repo" echo "name = MariaDB" >> "/etc/yum.repos.d/MariaDB.repo" echo "baseurl = http://yum.mariadb.org/5.5/centos6-amd64" >> "/etc/yum.repos.d/MariaDB.repo" echo "gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB" >> "/etc/yum.repos.d/MariaDB.repo" echo "gpgcheck=1" >> "/etc/yum.repos.d/MariaDB.repo"

3 3

Just need to vent
by Alice Wonder 29 Jan '16

29 Jan '16

Sometimes the direction of UI development in gnome really angers me. For example, when selecting a font for the gedit text editor - there is no way to ask it to only show monospace fonts. It's a fricken text editor, that should be the default - meaning you have to do something special to get fonts shown that aren't monospace. Seriously, who is in charge with the UI design in gnome? Whoever it is needs to be fired. /rant

38 98

how to configure or (reset) display
by Shabbir abbasi 29 Jan '16

29 Jan '16

i have posted a question on http://unix.stackexchange.com/questions/257310/centos-7-font-problem-unable… , i am unable to read words in terminal and unable to see correct images, Dont know if it is wrong config or something else , i have updated this system via ssh from LAN, Now i am connected directly to system and it looks very bad , can anyone tell me how to fix ?

2 2

yum / rpm kernel problems - CentOS 7.2
by Rob Kampen 29 Jan '16

29 Jan '16

This is the second time I have come across a problem with yum / rpm and kernel packages with CentOS 7. I install CentOS7 and do a yum update I add elrepo epel and virtualbox repos I install Virtualbox-5.0 It fails to install it give a message similar to : - WARNING: The vboxdrv kernel module is not loaded. Either there is no module available for the current kernel (3.10.0-327.el7.x86_64) or it failed to load. Please recompile the kernel module and install it by sudo /sbin/rcvboxdrv setup You will not be able to start VMs until this problem is fixed. 5.0.14r105127 As I had done a yum update the kernel was actually 3.10.0-327.4.5.el7 The initial install did not include kernel-devel so I yum install kernel-devel Still have the problem So I downgrade the kernel - it goes to 3.10.0-327.4.4.el7 I downgrade repeatedly until I get 3.10.0-327.el7.x86_64 as that was the initial kernel installed. The downgrade correctly downgrades the kernel, kernel-headers, kernel-tools and kernel-tools-libs BUT NOT the kernel-devel which stays at -327.4.5.el7 Trapped - didn't see that for a while! So I finally yum remove kernel-devel Then I look in yumex (with show latest - disabled) and only the kernel-devel for 3.10.0-327.4.5.el7 is shown. All the other kernel packages show the correct versions. At this point the only installed kernel rpms are 3.10.0-327.el7.x86_64 So I explicitly ask yum to install sudo yum install kernel-devel-3.10.0-327.el7.x86_64 so now I have >rpm -qa |grep kernel kernel-tools-libs-3.10.0-327.el7.x86_64 kernel-3.10.0-327.el7.x86_64 abrt-addon-kerneloops-2.1.11-36.el7.centos.x86_64 kernel-headers-3.10.0-327.el7.x86_64 kernel-tools-3.10.0-327.el7.x86_64 kernel-devel-3.10.0-327.el7.x86_64 The virtual box command to compile and install the vbox driver is sudo /sbin/rcvboxdrv which seems to have issues sudo /sbin/rcvboxdrv ** (pkttyagent:3047): WARNING **: Unable to register authentication agent: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name :1.6 was not provided by any .service files Error registering authentication agent: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name :1.6 was not provided by any .service files (g-dbus-error-quark, 2) zero idea of what that means a repeat of the command returns nothing but when I run >sudo VBoxManage -v WARNING: The vboxdrv kernel module is not loaded. Either there is no module available for the current kernel (3.10.0-327.el7.x86_64) or it failed to load. Please recompile the kernel module and install it by sudo /sbin/rcvboxdrv setup You will not be able to start VMs until this problem is fixed. 5.0.14r105127 BTW the setup param returns Bad argument setup At this point I have run out of ideas / patience / time and coffee. Any ideas as to how to fix this would be appreciated. TIA Rob

2 2

Frustrating xsession crashes
by aurfalien 28 Jan '16

28 Jan '16

Hi all, I was wondering if some one could give me ideas on how I can troubleshoot the following problem; log files to check, etc… I’m running CentOS 7.2.1511 with KDE. I login and open 1 or 2 shells. If I leave the system alone for about 15 minutes and then try to open another shell I get the error; Could not launch terminal client At this time, upon clicking on the lower left hand menu, the screen goes black. /var/log/messages; kernel: traps: plasma-desktop[3071] trap int3 ip:7f75606db8d3 sp:7f751e264ab0 error:0 /var/log/Xorg.0.log; AUDIT: Thu Jan 28 13:06:30 2016: 1603: client 15 disconnected Is there anything else I can look at to help me figure this out? Of the many weak points, GUI issues are my most weak areas of knowledge. Thanks in advance, - aurf

1 0

Firewalld
by Emmett Culley 28 Jan '16

28 Jan '16

Yesterday I noticed that I was not able to ping one of our development servers so I logged in via VNC and ran the Firewalld GUI. To my surprise, except for the interface definition for public and trusted zones, nothing seemed to be configured. That is, none of the services were checked off that we want open at the firewall. Also, this server is a gateway and masquerading and forwarding appears to be off as well. So it looks like the GUI is not correctly reading the firewalld configuration. I can find nothing in Google bout this. Emmett

2 2

remote gnome setup
by ken 28 Jan '16

28 Jan '16

It's been surprisingly difficult to set up a remote display between two CentOS boxes, one headless running v.5.9 and the other a new laptop running v.7.2. Since the one machine is headless, it should be obvious which is to display the desktop of the other. The two machines are on the same local network, yet there is iptables running on both of them. But it's not a big deal for me to add rules for them. There's already a solid ssh connection from the laptop to the headless machine. I recently set up remote display of applications from a Raspian (Debian running on a Raspberry Pi) to my Android phone-- that took only about an hour-- and (quite a while ago) an X server displaying apps from another Linux box-- was also trivial to do-- which is why it's been a mystery why using gdm is so difficult. Since I've tried a lot of different settings over the past several days, it would take too long to describe them all. If perhaps someone could describe the steps from the beginning, that would be much simpler and would give others seeking the same on the internet a doc to work from. So does anyone know how this is done?

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