Daniel Nachtrub

Kind of likes computers. Linux foundation certified: LFCS / CKA / CKAD / CKS. Microsoft certified: Cybersecurity Architect Expert & Azure Solutions Architect Expert.

Adding trusted root ca certificates on linux Members Public

This guide shows how to add trusted root cas on on debian or ubuntu based linux systems to enable seamless TLS encryption using your internal PKI.

Daniel Nachtrub
Daniel Nachtrub

The case of HTTP2 protocol error and chromium net-log Members Public

Migrating some of our internally used services to a new reverse proxy layer i've been struggling with ERR_HTTP2_PROTOCOL_ERROR when accessing a migrated service.

Daniel Nachtrub
Daniel Nachtrub

Ceph - Upgrade feature levels Members Public

Upgrading distributed systems implies running everything so it's compatible. Ceph is using feature maps to ensure compatibility. This article shows how to ugprade the feature level of a ceph cluster.

Daniel Nachtrub
Daniel Nachtrub
Linux

Zabbix 5.2 - Why it's worth upgrading Members Public

Zabbix 5.2 has been released a few weeks ago and brought several improvements that increase management capabilities and support more granular control. A new set of triggers provide a whole new spectrum of alerting in assocation with host specific trends!

Daniel Nachtrub
Daniel Nachtrub
Monitoring

Linux - i/o monitor and test tools Members Public

This post shows a few tools that are useful to check for i/o issues on linux systems by watching current i/o or testing the subsystem explicitly.

Daniel Nachtrub
Daniel Nachtrub
Linux

openvpn 2.5 - using wintun Members Public

Starting with release 2.5 openvpn added support for wintun interfaces. To enable utilization of wintun interfaces, you need to make some adjustments.

Daniel Nachtrub
Daniel Nachtrub
VPN