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monitoring: harden Grafana and keep non-P2P ports local - #507
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Grafana granted anonymous users the Admin role and was published on all interfaces, which Docker exposes past host firewalls such as ufw. It is now published on 127.0.0.1, read-only for anonymous users, without password logins or plugin installs, on its own monitoring network, and runs non-root from a fresh named volume. The legacy Lighthouse metrics port now binds to 127.0.0.1, and Alloy in logging.yml reads container logs via a read-only Docker socket proxy instead of mounting the socket. Adds grafana/security-check.sh for upgraders, a CI check that only P2P ports default to all interfaces, and a README security section.
![github-advanced-security[bot]](https://avatars.githubusercontent.com/in/57789?s=60&v=4){kind=small}
Alloy's Docker discovery calls GET /networks, which the proxy refused with only CONTAINERS enabled, so Alloy found no containers and shipped no logs.
…ript Use [[ ]] tests and an explicit return in security-check.sh, split the per-port logic out of check_ports, and install PyYAML from wheels only.
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OisinKyne
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Oct 26, 2026
…507) (#509) Grafana is published on 127.0.0.1, read-only for anonymous users, without password logins or plugin installs, on its own monitoring network, and runs non-root from a fresh named volume. The legacy Lighthouse metrics port binds to 127.0.0.1, and Alloy in logging.yml reads container logs via a read-only Docker socket proxy. Adds grafana/security-check.sh, a CI exposure check and a README security section.
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Grafana granted anonymous users the Admin role and was published on all interfaces, which Docker exposes past host firewalls such as ufw. It is now published on 127.0.0.1, read-only for anonymous users, without password logins or plugin installs, on its own monitoring network, and runs non-root from a fresh named volume. The legacy Lighthouse metrics port now binds to 127.0.0.1, and Alloy in logging.yml reads container logs via a read-only Docker socket proxy instead of mounting the socket.
Adds grafana/security-check.sh for upgraders, a CI check that only P2P ports default to all interfaces, and a README security section.