Exchange database fails with serious I/O error Paid Members Public
Running exchange servers there's a slight chance that the database growth results in a state where the filesystem cannot allocate anymore segments. Let's fix this.
Upgrading kernel on Ubuntu (20.04) LTS Paid Members Public
Upgrading kernels on LTS releases of ubuntu can easily be done by enabling an LTS enablement stack. This guide will show how and what to consider.
Upgrading ceph - migrating from docker hub Paid Members Public
Many vendors are moving container registries away from docker hub. One of them is ceph. This means: Recent container images are no longer published via docker hub and will prevent you from upgrading using cephadm if your installation is still pointing to docker hub. Issue: failed to pull target image
pfsense - access ipmi using ipmitool Paid Members Public
Recent versions of pfsense ship with ipmitool. To use it you need to load the kernel module - this guide shows how to do this.
Run c# inside powershell Paid Members Public
Powershell is quite powerful already for most purposes. Yet there are times when you need to use features that are not available in powershell directly. An example would be interacting with the OS via DllImports (like Windows API). Luckily, powershell has the ability to compile c# inline using the Add-Type
Triggering elasticsearch ilm step manually Paid Members Public
Elasticsearch provides an index lifecycle management that will handle traversal of indices through a whole bunch of lifecycle steps. Sometimes you might want to give the ILM a small tap and move to a specific step manually. This guide will explain how this can be done.
ceph reports "n hosts fail cephadm check" Paid Members Public
One of our ceph clusters entered HEALTH_WARN state with reason "1 hosts fail cephadm check". This guide shows a quick tip how to find out more about this issue.
The one when compatible foreign keys are incompatible Paid Members Public
Upgrading our ghost blog ran into issues migrating the database schema. Foreign keys failed with "Referencing column and referenced column in foreign key constraint are incompatible.". Let's fix it.
