ck - yet another tech blog made in switzerland
Fixing broken SNMP monitoring on virtual firewalls (VS) after Checkpoint update to R81.20
How to allow all ICMP types in EC2 Security Group using Terraform
Prometheus Process Exporter and the 15 character groupname limit (using .Comm)
Halftime report: 20 years working with Linux, 40 years in life
How to create a dynamic redirect rule for multiple domains (hostnames) in Cloudflare
httpchk headers or body at the end of the version string is unsupported (in newer HAProxy releases)
How to verify Varnish VCL configuration
OpenTelemetry Collector error: failed to create SDK bind: address already in use
AWS EC2 instance (aws_instance) replaced on every Terraform run
Solving GitLab pipeline error (): mapping values are not allowed in this context
Grafana dashboard panel error shows invalid interval string after major version upgrade
Prometheus node_exporter fails to start inside container
check_rancher2 1.13.0 released: Added Rancher2 API token expiry check
check_smart 6.16.0 adds support for devices behind usbjmicron bridge
Keepalived VIP not responding on RHEL 9 / EL9
Surprisingly good endurance without any errors of this SanDisk Ultra 3D SSD
Kernel panic during boot after Ubuntu upgrade (due to missing linux-image-generic package)
How to change a mapping field type by re-indexing in Elasticsearch
How to fix broken monitoring checks using PhantomJS (TypeError) after Ubuntu upgrade
Fixing code errors after PHP upgrade 7.4 -> 8.1 or 8.2
Lets Encrypt certbot failed to authenticate domain with mixed DNS records (AKA do not forget IPv6 records)
How to find the active (U)EFI partition and sync partition to secondary SSD in Debian Linux
Filesystem running out of inodes on Laravel app server due to Blade views (view cache)
Monitoring backend icinga2 is not running (due to time sync issue)
All mail servers suddenly listed on NixSpam (ix.dnsbl.manitu.net)
How to retrieve metrics from all processes using Grafana Alloy
check_esxi_hardware 20250221 released: pywbem exception improvements
Using GiB instead of KiB in libvirt xml memory allocation of KVM/Qemu VM
How to compare version numbers in a Python condition
Performance boost on my HP Microserver N40L after Debian 12 upgrade
Fix CI/CD pipelines using EPEL repositories for EL7 (RHEL7, CentOS7)
check_smart 6.15.0 released: SMART Error Log check + usage override possibility
How to convert from Unix nano timestamp format to human readable date in Linux
How to change Icingaweb2 password for icingaadmin user in backend database
rsync security update introduced a regression on Debian and Ubuntu Linux (meanwhile fixed)
How to scrape local Prometheus node exporter metrics running in Grafana Alloy
Logstash http output plugin: difference between json and json_batch format