Errorenous Oracle Instantclient RPM provides under Enterprise Linux

If you are using drivers and libraries that need access to Oracle databases (e.g. perl-DBD-Oracle), you will need the Oracle Instantclient. Oracle offers this software for free after registration. Unfortunately creating correct provides tags was missed when creating the RPM packages. Even though Instantclient is installed, software like perl-DBD-Oracle cannot be installed – because of
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Distribute GitLab Community Edition with Spacewalk

GitLab is a very popular alternative to GitHub that is available as free Community Edition for interested hobbyists and smaller companies. For installing the software, there is a script for downloading and installing the particular software packages. If you have a look at the source code of this script, you will see that this script uses conventional
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Short tip: DRBD + EL7: /var/lib/drbd/drbd-minor-0.lkbd: No such file or directory

Recently I stumbled upon the following error message while creating a DRBD volume on CentOS 7: # drbdadm create-md r0 initializing activity log NOT initializing bitmap Writing meta data… lk_bdev_save(/var/lib/drbd/drbd-minor-0.lkbd) failed: No such file or directory New drbd meta data block successfully created. lk_bdev_save(/var/lib/drbd/drbd-minor-0.lkbd) failed: No such file or directory Oops! After executing the command
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Short tip: Please reserve memory by passing “crashkernel=X@Y” parameter to the kernel

While configuring kdump on a system I recently stumbled upon the following error: Please reserve memory by passing “crashkernel=X@Y” parameter to the kernel However, the parameter crashkernel was mentioned in the GRUB configuration file and kernel commandline: $ grep crashkernel /proc/cmdline ro root=/dev/mapper/vg_system-lv_root … crashkernel=auto … rhgb quiet I saw that this setting works for
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Store kernel dumps using kdump on remote machines

If the Linux kernel crashes it is possible to create a memory image (also called vmcore) using a mechanism called kdump. Especially, this is useful if you plan to engage support to fix the reason for the issue. By default, the vmcore is stored under /var/crash. But if the kernel is not able to access
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Spacewalk 2.3 released

After Red Hat Satellite 5.7 was released 3 months ago Spacewalk version 2.3 was published on 14th of april 2015 after 9 months of development. Like the commercial spin-off the recent management suite also offers a more modern web-interface. With version 2.2 this interface’s user experience was overhauled by HTML5, jQuery and Bootstrap. Die updated
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VM Tools for MS-DOS and Windows 3.x

VMware offers software packages including additional applications and drivers for the most support guest operating systems – these packages are also called VMware Tools. Beside recent operating systems also older releases are supported – e.g. there are also Tools for Windows NT. Unfortunately MS-DOS and Windows 3.x are not supported, yet – even if there
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Short tip: VMware vSphere “Module DiskEarly power on failed to lock file”

While booting a virtualized cluster node I stumped upon a suspicious error message recently: Module DiskEarly power on failed to lock file In the VMware forums I found a hint that locking mechanisms might account for this issue. However the thread focussed on desktop products and not on vSphere. I found no lock files (*.lck)
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