// Blog and breakdowns
Posts and notes about servers, infrastructure, networking, security, and real operational work.
// Fast route
If you came from search and do not want to move through the archive one post at a time, it is better to switch to the topics catalog or open services directly.
161 log entries indexed
While automation ties together ready-made services — CRM, email, messenger, spreadsheets — data is stored inside those services. When a custom application, a client personal account or an internal accounting system …
Loki — a log storage system from Grafana Labs. Its main difference from ELK, OpenSearch and Graylog is that Loki does not build a full-text index. Only labels are indexed — a short set of key–value pairs describing the …
Graylog — a platform for centralized log management. Unlike ELK, which is assembled from separate components, Graylog is originally built as a single system: intake, processing, routing, storage, search, alerts and …
OpenSearch — an open data search and analytics system most often used for centralized log storage. It is a fork of Elasticsearch and Kibana: in 2021, after Elastic changed the license to SSPL and the Elastic License, …
ELK Stack — the best-known software stack for centralized logging. The name is formed from the initials of three components from Elastic: Elasticsearch, Logstash, and Kibana. Together they collect logs, parse them into …
Metrics show something is wrong with the system: response time has increased, memory is exhausted, the share of successful requests has dropped. To understand why this happened, you need logs — records of events written …
VictoriaMetrics — a time-series database compatible with Prometheus. It is used as a long-term storage for Prometheus metrics or as a complete replacement for it — together with the vmagent collector and the vmalert …
Zabbix — an “all-in-one” monitoring system: data collection, storage, triggers, alerts, dashboards and access control are combined in a single product. It’s chosen when you need to monitor servers, …
Prometheus — an open-source monitoring system and time-series database (Apache 2.0 license). It was created at SoundCloud in 2012, and in 2016 the project joined the Cloud Native Computing Foundation, second after …
Munin is one of the oldest open-source monitoring systems (GPLv2). It collects system metrics from servers and builds ready-made graphs from them: no query language, no separate database, and almost no configuration. The …