OpenObserve vs ELK/Kibana: benefits and limits
Compare OpenObserve and Elastic: storage, costs, SQL, dashboards, security, licenses, and a proof-of-concept and migration roadmap.
DevOps
RustFS on Linux: install via binary and Docker
Install RustFS on Linux with binary and systemd or Docker Compose: S3 API, persistence, TLS, IAM, upload and download tests, backup and operation.
Gitea 28: news and upgrade precautions
Audit, bots, deploy tokens, and Actions in Gitea 28: what changed and the precautions with retention, egress, and WebSocket before upgrading.
WordPress: this week's CVEs and how to stay safe
CVEs disclosed from 28/09 to 04/10/2026: affected plugins, fixed versions, mitigation, walkthrough using WP-CLI and security best practices.
rclone: migrating from S3 to GCS or OCI — part 2
Migrate buckets from Amazon S3 to Google Cloud Storage or OCI with rclone: inventory, initial copy, deltas, freeze, verification, and rollback.
rclone on Linux: sync, encrypted backup, mount, and serve on any cloud
Complete rclone guide 1.75: installation, S3 and Google Drive remotes, copy vs sync vs bisync, filters, encryption with crypt, encrypted rclone.conf, scheduled backup with systemd timer, FUSE mount, serve, and the new web GUI.
Databasus: backup of PostgreSQL, MySQL and MariaDB with tested restore
Databasus schedules, compresses, encrypts, and ships PostgreSQL, MySQL, MariaDB, and MongoDB backups, and on PostgreSQL it also restores each backup inside a disposable container to prove it works. Install, Dockerfile build, MySQL/MariaDB lab-tested, and verification agent.
Linux users with Ansible: SSH keys, sudo and history in Git
Create, lock and remove Linux users with Ansible: passwordless SSH key, sudo via group or sudoers.d, and every change as a Git commit for auditing. Tested on Ubuntu 24.04 and Debian 13.
KeyDB: the multithreaded Redis fork, tested on 2026
KeyDB installed, replicated, and benchmarked in containers: the multithreaded Redis fork still runs, but has been stalled since 2023, loses writes after a network partition, and did not fix CVE-2025-49844. Comparison with Redis and Valkey, plus a recommendation.
Valkey in cluster: 3 primaries, 3 replicas and tested failover
Valkey cluster 9.1.2 with 3 primaries and 3 replicas: hash slots, MOVED/ASK, measured failover by killing a primary, reshard with atomic migration, persistence, ACL, TLS, systemd, and Valkey Admin.