SAS Drives Showing 0B in lsblk and Missing from Multipath: The 520-Byte Sector Problem Paid Members Public
Enterprise SAS SSDs repurposed from storage arrays often arrive formatted with 520-byte sectors — a T10 DIF/PI integrity field used by array controllers that Linux cannot handle. The kernel rejects the drive entirely, reporting 0B in lsblk and leaving multipathd with nothing to work with.
rook ceph - unmap stuck rbd Paid Members Public
You might find yourself in a situation where you need to push rook ceph a little to unmount RBDs in order to unblock PV operations.
Prepending Environment Variables with Kyverno: Finding the Right Approach Paid Members Public
Injecting environment variables into Kubernetes pods with Kyverno requires careful strategy. While `patchStrategicMerge` only appends to arrays, `patchesJson6902` with `add` operation at index `0` successfully prepends variables, preserving existing configurations.
ceph 20.2.0 (tentacle) released Paid Members Public
Ceph 20 is out - and you should get your hands on it!
terraform actions - I like hooks and I cannot lie Paid Members Public
Terraform 1.14 beta brings actions - a decent approach to run one shot events on state transitions. Check out this post to see an example and how it can be done already today.
Using kyverno to generate secrets Paid Members Public
Sometimes it's the little helpers that make the difference. Here's some kyverno policy you can use to generate secret values in Kubernetes through a mutating webhook.
Helm & variable scopes Paid Members Public
When using variables to track state across loop iterations in Helm templates, declare them outside the loop scope or they'll reset on each iteration.
OpenVPN DCO part of linux kernel Paid Members Public
openvpn dco will be part of linux kernel 6.16 - that's huge and you should have this on your radar to benefit from huge performance gains!
