2020-11-24 - Version 2.5

Changelog:

• add: new oldest_xmin service
• add: new extensions_versions service
• add: new checksum_errors service
• add: support for v13 and other improvements on replication_slots
• add: v13 compatibility for service wal_files
• add: various documentation details and examples
• add: support service replication_slots on standby
• add: accept single b or o as size unit
• add: json and json_strict output formats
• add: size and/or delta thresholds for database_size service
• add: thresholds are now optional for service database_size
• add: support for v12 and v13 archive_folder
• regression: threshold repslot becomes spilled in service replication_slots
• regression: in services latest_vacuum and latest_analyze: a critical alert is now raised on tables that were never analyzed/vacuumed or whose maintenance date was lost due to a crash
• fix: avoid alerts for lack of maintenance on inactive db
• fix: forbid rare cases of division by zero in wal_files
• fix: do not alert on missing file in temp_files for v10+
• fix: detect lack of maintenance in last_vacuum and last_analyze for never maintained tables
• fix: backend count for v10+
• fix: replace NaN with "U" for strict outputs
• fix: do not count walsenders as part of max_connections
• fix: broken archiver service with v10+
• fix: perl warning when archiver is not active