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fix: [#277] remove public MySQL port exposure for security #278

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Merged
josecelano merged 1 commit into from
Jan 20, 2026
Merged

fix: [#277] remove public MySQL port exposure for security #278

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6 changes: 3 additions & 3 deletions src/infrastructure/templating/docker_compose/template/renderer/docker_compose.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -301,10 +301,10 @@ mod tests {
"Volume should use local driver"
);

// Verify port mapping
// Verify port is NOT exposed (security fix: https://github.com/torrust/torrust-tracker-deployer/issues/277)
assert!(
content.contains("3306:3306"),
"Should expose MySQL port 3306"
!content.contains("3306:3306"),
"MySQL port 3306 should NOT be exposed externally for security"
);
}

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7 changes: 5 additions & 2 deletions templates/docker-compose/docker-compose.yml.tera
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Expand Up @@ -176,8 +176,11 @@ services:
{%- for network in mysql.networks %}
- {{ network }}
{%- endfor %}
ports:
- "3306:3306"
# SECURITY: MySQL port is NOT exposed to the host/external network.
# - Only the tracker container can access MySQL via Docker's internal database_network
# - The healthcheck runs inside the container, so no external port is needed
# - This prevents unauthorized external access to the database
# See: https://github.com/torrust/torrust-tracker-deployer/issues/277
volumes:
- mysql_data:/var/lib/mysql
command: --mysql-native-password=ON
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