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luppeng.wordpress.com
luppeng.wordpress.com
2026
Atlantis – Preventing Arbitrary Scripts/Programs from Running using Open Policy Agent (OPA) Policiesoriginal ↗
9 Sept 2026
14 Jun 2026
TIL: Separate OpenTelemetry Receivers That Scape, from Those That Receive Signals from Clientsoriginal ↗
25 Apr 2026
Install Argo Project Tools in a Single Kubernetes Cluster, and Expose Their Dashboards Via MetalLB and NGINX Ingress Controlleroriginal ↗
18 Feb 2026
2025
TIL: Logs in Cloudwatch Log Group Take a Few Minutes Before Showing up in Cloudwatch Logs Insights Queryoriginal ↗
6 Dec 2025
A Fully Automated Installation of Ubuntu Server – Combining Netboot Tarball via PXE with Autoinstall Configuration Fileoriginal ↗
17 Oct 2025
Using the Ubuntu Server Netboot Tarball to Install the OS via Preboot Execution Environment (PXE)original ↗
7 Sept 2025
Karpenter NodeClass Validation Errors Can Be Made More Intuitive by Returning the Actual Error From SDKoriginal ↗
1 Aug 2025
Comparing the Key Hardware and OS Metris Exposed by Prometheus Node Exporter and OpenTelemetry Collector’s Host Metrics Receiveroriginal ↗
25 Jul 2025
Create and Share a Logical Volume Manager (LVM) Logical Volume over the Network via Network File Sharing (NFS)original ↗
2 Jun 2025
27 Apr 2025
Setup Gitlab Runner to Automatically Start as a Daemon In User Mode Without sudo/Root Privilegesoriginal ↗
21 Mar 2025
7 Mar 2025
Using x-systemd.makefs in /etc/fstab to Automatically Prepare Ephemeral Block Devices as Local Storageoriginal ↗
15 Feb 2025
Exporting Logs, Traces and Metrics Directly to Grafana LGTM Stack Without Using a Collectororiginal ↗
1 Feb 2025
Atlantis Repo Config execution_order_group and depends_on Attributes May Be Mutually Exclusive in Some Casesoriginal ↗
11 Jan 2025
2024
Use Simple Queries and Grafana Transformations To Handle Inner Join Edge Cases Where One Query Returns Empty Result Setoriginal ↗
24 Dec 2024
16 Aug 2024
30 Jun 2024
AWS AMIs Using Encrypted EBS Volumes Need Additional kms:CreateGrant IAM Permissions For Encryption Keyoriginal ↗
28 May 2024
Unable to Delete Metrics from Prometheus Time Series – the Curious Case of 5 Minutes Projected Metricsoriginal ↗
16 Feb 2024
“dnf makecache –timer” Triggered by Systemd Uses Approximately 600MB RAM on Fedora Server 39original ↗
10 Jan 2024
2023
17 Dec 2023
9 Dec 2023
10 Nov 2023
Architecture Diagram for Cross-Account Log Data Sharing With Amazon CloudWatch Logs Subscription Filtersoriginal ↗
3 Nov 2023
17 Sept 2023
1 Sept 2023
2 Jun 2023
2022
Document With New Format Could Not Be Indexed By Elasticsearch Due to Incompatible Index Mappingoriginal ↗
5 Nov 2022
KStreams-(Global)KTable Left Join Drops Record When KeyValueMapper Returns Null from Kafka Streams Library v2.7 Onwardsoriginal ↗
30 Sept 2022
Grafana Dashboard Monitoring Apache Kafka Cluster Suddenly Missing JMX Metrics Due to JMX Exporter Out of Heap Spaceoriginal ↗
3 Sept 2022
Lessons From Migrating a Central Event Streaming Data Platform From Self-Managed to Managed Kubernetesoriginal ↗
1 Jul 2022
31 May 2022