Full lab documentation and infrastructure as code

- Trino catalogs, Grafana, Spark jobs, LDAP LDIF, NPM compose
- Airflow DAG scripts, Proxmox VM inventory, network docs
- Ansible playbook, Gitea CI validate workflow
- Backup and health-check scripts, cron documentation
- Homepage DOCS tab with links to all documentation
- Extended collect-fleet-config.sh and populate-repo.py

config/trino/README.md

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+# Trino — atc-lake01
+
+| Item | Value |
+|------|-------|
+| UI | http://atc-lake01:8089/ui/ |
+| Container | `trino` (Docker) |
+| Catalogs | `catalog/*.properties` |
+
+## Catalogs
+
+| File | Connector | Source |
+|------|-----------|--------|
+| `postgres_sales.properties` | PostgreSQL | atc-db02:5432 |
+| `mysql_hr.properties` | MySQL | atc-db02:3306 |
+| `mongodb_supplychain.properties` | MongoDB | atc-db02:27017 |
+| `cassandra_telemetry.properties` | Cassandra | atc-db02:9042 |
+| `iceberg.properties` | Iceberg | ObjectScale S3 `10.0.20.111:9020` |
+
+Passwords redacted in git. Refresh: `./scripts/collect/collect-fleet-config.sh`

config/trino/catalog/cassandra_telemetry.properties

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+connector.name=cassandra
+
+cassandra.contact-points=10.0.21.51
+cassandra.native-protocol-port=9042
+
+# Required DC setting for load balancing:
+cassandra.load-policy.dc-aware.local-dc=datacenter1
+
+# If Cassandra auth is enabled, uncomment and set:
+# cassandra.username=mo
+# cassandra.password=REDACTED

config/trino/catalog/iceberg.properties

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+connector.name=iceberg
+iceberg.catalog.type=TESTING_FILE_METASTORE
+hive.metastore.catalog.dir=/tmp/iceberg_metadata
+
+# S3 Connectivity
+hive.s3.endpoint=http://10.0.20.111:9020
+hive.s3.aws-access-key=REDACTED
+hive.s3.aws-secret-key=REDACTED
+hive.s3.path-style-access=true
+hive.s3.ssl.enabled=false

config/trino/catalog/mongodb_supplychain.properties

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+connector.name=mongodb
+mongodb.connection-url=mongodb://10.0.21.51:27017/
+mongodb.schema-collection=__trino_schema

config/trino/catalog/mysql_hr.properties

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+connector.name=mysql
+connection-url=jdbc:mysql://10.0.21.51:3306
+connection-user=mo
+connection-password=REDACTED

config/trino/catalog/postgres_sales.properties

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+connector.name=postgresql
+connection-url=jdbc:postgresql://10.0.21.51:5432/postgres
+connection-user=mo
+connection-password=REDACTED