Enodia: Open-Source Go Tool Automates Service Inventory, EOL Tracking and CVE Correlation
A DevOps engineer running both a home lab and a large production environment grew frustrated with the inability to answer three simple questions: which exact versions of PostgreSQL, nginx and other services are deployed, which of them have reached or will soon reach end-of-life, and which carry known CVEs.
Initial attempts using Ansible playbooks to collect operating-system versions and export them into Google Sheets quickly proved unsustainable. The spreadsheets lacked diffing capabilities, contained no knowledge of support calendars, and could not reach services that do not expose SSH such as Jira, PostgreSQL, Redis or BMC interfaces.
After evaluating existing tools, none of which combined live service discovery, end-of-life calendars and CVE data, the engineer created enodia. The resulting single-binary CLI under the AGPL-3.0 licence reads a declarative YAML configuration describing every target and then interrogates each service with a purpose-built probe written in Go.
One hundred and twenty-three product-specific probes currently exist, covering Atlassian products, GitLab, Jenkins, TeamCity, SonarQube, Keycloak, Vault, Grafana, databases, message brokers, VMware ESXi and vCenter, Proxmox, NAS appliances, BMC cards, pfSense, RouterOS and 31 operating systems via SSH. A generic probe supports any remaining service via HTTP(S) plus regex or JSONPath extraction.
Enodia deliberately splits collection from evaluation. The command enodia collect produces an inventory.jsonl file containing only observed facts; enodia check later correlates those facts against support calendars and CVE databases. This separation allows inventory gathering inside closed networks and subsequent analysis where internet access or local CVE mirrors are available.
Instead of a single pass/fail verdict, the tool reports three independent axes: PATCH status (current or behind), LIFECYCLE status (active, security-only or EOL) and BRANCH status (latest, newer or newer LTS). These axes feed an overall severity of info, warn or fail that determines the process exit code, making the tool suitable for CI pipelines.
During development several non-obvious pitfalls were encountered and fixed. Early MySQL/MariaDB probes triggered the server’s max_connect_errors counter because they closed the connection before authentication; the current probe now performs a minimal login attempt so that the connection is counted as established. MariaDB’s version-string prefix “5.5.5-” caused older versions of enodia to misclassify servers as long-EOL MySQL 5.5.5. Debian point-release information is read from /etc/debian_version rather than the frozen VERSION_ID field. VMware “Update N” nomenclature is parsed into semantic versions so that 8.0 Update 3 is not reported newer than the calendar entry 8.0 U3k.
Support calendars are sourced primarily from endoflife.date, to which the author contributed full histories for Confluence, Bitbucket and Bamboo plus new entries for Jira Service Management and pgAdmin. CVE data is pulled from both NVD and Russia’s FSTEC BDU; package-level vulnerabilities for ten distributions are obtained via their native OVAL or Security Tracker feeds. All CVE databases can be updated once and then used offline inside air-gapped environments.
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