Offline virtual device means it cannot be used because the missing or bad or failed disks are more than the fault tolerance it is offering….
CentOS 7
Useful tips for the famous linux disto CentOS 7
Copying partition table from one disk to another with older sfdisk under CentOS 7
Older version of sfdisk may still be used for msdos partition tables. To copy the partition table from one disk to another using sfdisk a…
Caching NFS files with cachefilesd
A great tool for caching a network filesystem like NFS mounts is cachefilesd! It is easy to use it and a good deal of stats…
libelf was not found in the pkg-config search path
Building from source under CentOS the user may stumble on some compilation errors and most of them are for missing -devel packages. Here is such…
removing the default kernel in CentOS 8 – remove elrepo kernel
Removing the default kernel aka the loaded kernel in CentOS 8 maybe challenging because the package is protected and cannot be removed by the yum…
gitlab in podman cannot create unix sockets in glusterfs because of SELinux
Installing gitlab-ee (and gitlab-ce) under CentOS 7 with enabled SELinux (i.e. enforcing mode) looped endlessly the container in restarting the installation process! There were multiple…
collectd nginx plugin: curl_easy_perform failed because of selinux
Enabling the Nginx plugin for collectd under CentOS (or any other system using SELinux) might be confusing for a newbie. Most sources on the Internet…
Dracut boot failed with missing device – exit and continue normal booting!
This issue deserves a much more article, in fact, a straightforward tip: You may be able to continue a normal boot only by typing “exit”…
CentOS 7 – Your kernel headers for kernel cannot be found at – missing kernel-devel
Getting the following error may be deceiving: Because you may have already installed the kernel-headers package for the current kernel and still to get the…
CentOS 7 – Dependency Resolution – Error – Requires: dkms – missing epel repository
Quick note for those not familiar with the CentOS 7 peculiarity and especially the repository peculiarity. Receiving the follwoing error: It means you need a…