check_pgactivity

• add support for PostgreSQL 9.6
• improve and rename "ready_archives" to "archiver"
• add service sequences_exhausted to monitor sequence usage
• add service stat_snapshot_age to detect a stuck stats collector process
• add service wal_receiver to monitor replication on standby's end
• add service pgdata_permission to monitor rights and ownership of the PGDATA
• add support for "pending restart" parameters from PostgreSQL 9.5+ in check_settings
• add timeline id in perfdata output from wal_files
• fix wal_files, archiver, check_is_replay_paused, check_hot_standby_delta, check_streaming_delta and check_replication_slots for PostgreSQL 10
• fix archive_folder to handle compressed archived WAL properly
• fix backends_status for PostgreSQL 9.6
• warn when no rows are returned in custom_query service
• make thresholds optional in service hot_standby_delta
• make thresholds optional in service streaming_delta
• remove useless thresholds in backends/maximum_connections perfdata
• add warn/crit threshold to steaming_delta perfdatas
• use parameter server_version_num to detect PostgreSQL version
• fix a race condition in is_storable to handle concurrent executions correctly
• fix a bug in service locks that occurs with PostgreSQL 8.2
• fix rounding in hit_ratio
• fix perl warning when some ENV variables are not defined
• fix bug in "human" output format
• fix version check for all hosts for service hot_standby_delta
• fix bug in pg_dump_backups related to age of global files
• fix documentation about default db connection

This is the second release candidate for check_pgactivity 2.2.

This release fixes a bug left in service wal_files as timeline ids were not taken as hexadecimal values.

This is the first release candidate for check_pgactivity 2.2.

See CHANGELOG.md for more informations.