Graylog review

Graylog is a log management and SIEM platform, not a client library or standalone command-line tool. It collects logs from multiple sources, then provides search, dashboards, alerting and reporting over that data. Security editions add detection and investigation features; Enterprise focuses on log management for operations teams.

You can run it in Graylog Cloud, your cloud or your own racks, including air-gapped environments. That puts Graylog in the data and security operations layer: applications and infrastructure send logs to it, and teams use its search and alerting to investigate events. Graylog also describes data routing across hot, warm, archive and data lake storage.

The free Graylog Open edition is self-managed. Paid Enterprise and Security editions add capabilities for organizations that need enterprise log management or SIEM. This flexibility comes with an operational choice: use the hosted service or own deployment, storage and maintenance yourself.

Graylog’s integration surface includes log collection and an API used for reporting. A Reddit user describes custom API-based reports, while another reports that an upgrade removed support for API calls they relied on. That makes API compatibility worth validating before building dashboards, reports or automation around it.

The vendor doesn’t publish a supported SDK or language matrix in its product overview. Confirm supported API protocols, client libraries, authentication methods and versioning in Graylog’s technical documentation before choosing a language or committing to an integration. The vendor's site also doesn’t establish a CLI, webhook or plugin workflow, so verify those requirements with the vendor rather than assuming they are part of the integration surface.

For a production rollout, identify which log sources and formats you need to collect, then test the relevant ingestion path and any API-dependent reporting through an upgrade. A community user specifically reports dashboard and report changes during an upgrade.

Graylog Open costs $0 permanently, is self-managed and has no volume restrictions. It includes community support, search, dashboards and data routing. It is the lowest-cost option on the subscription line, but your team still operates the infrastructure.

Graylog Enterprise starts at $15,000 per year, with an entry point of 10 GB/day or 100 GCUs. That equals $1,250 per month when the annual price is divided by 12; subscriptions are annual. Enterprise includes data tiering across hot, warm and archive, plus SSO, teams and LDAP role-based access. Graylog Security starts at $18,000 per year, or $1,500 per month on the same annual-equivalent basis, at 10 GB/day or 100 GCUs. It adds machine-learning anomaly detection and detection rules mapped to MITRE ATT&CK.

The vendor doesn’t publish overage rates or how pricing changes above those entry points. Ask for a quote at your expected ingest and GCU levels. Live and custom training, Professional Services and a Technical Account Manager are additional options with unpublished prices.

Graylog describes Graylog Open as source-available and self-managed. The vendor does not identify the license in its product overview, so confirm the current license terms before building a commercial product or distributing a modified version. The edition is free permanently and has no volume restrictions, according to the pricing details.

Self-hosting is supported in your cloud or on your own racks, including air-gapped environments. That avoids requiring Graylog Cloud, but it makes your team responsible for operating the deployment and its storage. Graylog also offers cloud deployment for teams that prefer a hosted service.

The vendor's site does not establish a specific export format or migration path. Plan to verify how you can export raw logs, dashboards, alerts and configuration before you depend on them. A Reddit user reports that a major upgrade affected custom dashboards and API-based reports, a practical warning to keep integrations and configuration portable.

Before committing, size the deployment around ingest volume, retention, storage tiers and the team’s ability to operate the platform. Graylog’s homepage cites 1,000,000 messages per second and 100 TB total capacity per day, but those figures are vendor claims, not workload-specific guarantees. Paid editions list entry points of 10 GB/day or 100 GCUs; confirm how your deployment and price change as usage grows.

Community reports describe useful alerting and dashboards after configuration, as well as long-running on-premises deployments. One user warns that upgrades affected custom dashboards and API-based reports. Another says Elasticsearch management is central to operating the system. Treat upgrade testing, API compatibility and storage operations as part of the deployment plan.

For security use, validate detection coverage against your sources and audit requirements. Graylog lists prebuilt detection content, anomaly detection and risk scoring, but teams should verify what is included in the edition and how it fits their response process. Check network capacity, too: a Reddit commenter warns that log traffic can strain business connectivity.