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• durability_synchronous_commit | string

  Default: on

  Sets the current transactions synchronization level. This charm allows only the “on”, “remote_apply” and “remote_write” values to avoid data loss if the primary crashes and there are replicas.

• experimental_max_connections | int

  [EXPERIMENTAL] Force set max_connections.

• instance_default_text_search_config | string

  Default: pg_catalog.simple

  Selects the text search configuration that is used by those variants of the text search functions that do not have an explicit argument specifying it. Allowed values start with “pg_catalog.” followed by a language name, like “pg_catalog.english”.

• instance_password_encryption | string

  Default: scram-sha-256

  Determines the algorithm to use to encrypt the password. Allowed values are: “md5” and “scram-sha-256”.

• logging_log_connections | boolean

  Logs each successful connection.

• logging_log_disconnections | boolean

  Logs end of a session, including duration.

• logging_log_lock_waits | boolean

  Logs long lock waits.

• logging_log_min_duration_statement | int

  Default: -1

  Sets the minimum running time (milliseconds) above which statements will be logged. Allowed values are: from -1 to 2147483647 (-1 disables logging statement durations).

• memory_maintenance_work_mem | int

  Default: 65536

  Sets the maximum memory (KB) to be used for maintenance operations. Allowed values are: from 1024 to 2147483647.

• memory_max_prepared_transactions | int

  Sets the maximum number of simultaneously prepared transactions. Allowed values are: from 0 to 262143.

• memory_shared_buffers | int

  Sets the number of shared memory buffers (8 kB) used by the server. This charm allows to set this value up to 40% of the available memory from the unit, as it is unlikely that an allocation of more than that will work better than a smaller amount. Allowed values are: from 16 to 1073741823.

• memory_temp_buffers | int

  Default: 1024

  Sets the maximum number of temporary buffers (8 kB) used by each session. Allowed values are: from 100 to 1073741823.

• memory_work_mem | int

  Default: 4096

  Sets the maximum memory (KB) to be used for query workspaces. Allowed values are: from 64 to 2147483647.

• optimizer_constraint_exclusion | string

  Default: partition

  Enables the planner to use constraints to optimize queries. Allowed values are: “on”, “off” and “partition”.

• optimizer_default_statistics_target | int

  Default: 100

  Sets the default statistics target. Allowed values are: from 1 to 10000.

• optimizer_from_collapse_limit | int

  Default: 8

  Sets the FROM-list size beyond which subqueries are not collapsed. Allowed values are: from 1 to 2147483647.

• optimizer_join_collapse_limit | int

  Default: 8

  Sets the FROM-list size beyond which JOIN constructs are not flattened. Allowed values are: from 1 to 2147483647.

• plugin_address_standardizer_data_us_enable | boolean

  Enable address_standardizer_data_us extension

• plugin_address_standardizer_enable | boolean

  Enable address_standardizer extension

• plugin_bloom_enable | boolean

  Enable bloom extension

• plugin_bool_plperl_enable | boolean

  Enable bool_plperl extension

• plugin_btree_gin_enable | boolean

  Enable btree_gin extension

• plugin_btree_gist_enable | boolean

  Enable btree_gist extension

• plugin_citext_enable | boolean

  Enable citext extension

• plugin_cube_enable | boolean

  Enable cube extension

• plugin_debversion_enable | boolean

  Enable debversion extension

• plugin_dict_int_enable | boolean

  Enable dict_int extension

• plugin_dict_xsyn_enable | boolean

  Enable dict_xsyn extension

• plugin_earthdistance_enable | boolean

  Enable earthdistance extension

• plugin_fuzzystrmatch_enable | boolean

  Enable fuzzystrmatch extension

• plugin_hll_enable | boolean

  Enable hll extension

• plugin_hstore_enable | boolean

  Enable hstore extension

• plugin_hypopg_enable | boolean

  Enable hypopg extension

• plugin_icu_ext_enable | boolean

  Enable icu_ext extension

• plugin_intarray_enable | boolean

  Enable intarray extension

• plugin_ip4r_enable | boolean

  Enable ip4r extension

• plugin_isn_enable | boolean

  Enable isn extension

• plugin_jsonb_plperl_enable | boolean

  Enable jsonb_plperl extension

• plugin_lo_enable | boolean

  Enable lo extension

• plugin_ltree_enable | boolean

  Enable ltree extension

• plugin_old_snapshot_enable | boolean

  Enable old_snapshot extension

• plugin_orafce_enable | boolean

  Enable orafce extension

• plugin_pg_freespacemap_enable | boolean

  Enable pg_freespacemap extension

• plugin_pg_similarity_enable | boolean

  Enable pg_similarity extension

• plugin_pg_trgm_enable | boolean

  Enable pg_trgm extension

• plugin_pg_visibility_enable | boolean

  Enable pg_visibility extension

• plugin_pgrowlocks_enable | boolean

  Enable pgrowlocks extension

• plugin_pgstattuple_enable | boolean

  Enable pgstattuple extension

• plugin_plperl_enable | boolean

  Enable plperl extension

• plugin_plpython3u_enable | boolean

  Enable PL/Python extension

• plugin_pltcl_enable | boolean

  Enable pltcl extension

• plugin_postgis_enable | boolean

  Enable postgis extension

• plugin_postgis_raster_enable | boolean

  Enable postgis_raster extension

• plugin_postgis_tiger_geocoder_enable | boolean

  Enable postgis_tiger_geocoder extension

• plugin_postgis_topology_enable | boolean

  Enable postgis_topology extension

• plugin_prefix_enable | boolean

  Enable prefix extension

• plugin_rdkit_enable | boolean

  Enable rdkit extension

• plugin_seg_enable | boolean

  Enable seg extension

• plugin_spi_enable | boolean

  Enable spi extension

• plugin_tablefunc_enable | boolean

  Enable tablefunc extension

• plugin_tcn_enable | boolean

  Enable tcn extension

• plugin_tds_fdw_enable | boolean

  Enable tds_fdw extension

• plugin_timescaledb_enable | boolean

  Enable timescaledb extension

• plugin_tsm_system_rows_enable | boolean

  Enable tsm_system_rows extension

• plugin_tsm_system_time_enable | boolean

  Enable tsm_system_time extension

• plugin_unaccent_enable | boolean

  Enable unaccent extension

• plugin_uuid_ossp_enable | boolean

  Enable uuid_ossp extension

• plugin_vector_enable | boolean

  Enable pgvector extension

• profile | string

  Default: production

  Profile representing the scope of deployment, and used to tune resource allocation. Allowed values are: “production” and “testing”. Production will tune postgresql for maximum performance while testing will tune for minimal running performance.

• profile_limit_memory | int

  Amount of memory in Megabytes to limit PostgreSQL and associated process to. If unset, this will be decided according to the default memory limit in the selected profile. Only comes into effect when the `production` profile is selected.

• request_date_style | string

  Default: ISO, MDY

  Sets the display format for date and time values. Allowed formats are explained in https://www.postgresql.org/docs/14/runtime-config-client.html#GUC-DATESTYLE.

• request_standard_conforming_strings | boolean

  Default: True

  Causes ... strings to treat backslashes literally.

• request_time_zone | string

  Default: UTC

  Sets the time zone for displaying and interpreting time stamps. Allowed values are the ones from IANA time zone data, a time zone abbreviation like PST and POSIX-style time zone specifications.

• response_bytea_output | string

  Default: hex

  Sets the output format for bytes. Allowed values are: “escape” and “hex”.

• response_lc_monetary | string

  Default: C

  Sets the locale for formatting monetary amounts. Allowed values are the locales available in the unit.

• response_lc_numeric | string

  Default: C

  Sets the locale for formatting numbers. Allowed values are the locales available in the unit.

• response_lc_time | string

  Default: C

  Sets the locale for formatting date and time values. Allowed values are the locales available in the unit.

• vacuum_autovacuum_analyze_scale_factor | float

  Default: 0.1

  Specifies a fraction of the table size to add to autovacuum_vacuum_threshold when deciding whether to trigger a VACUUM. The default, 0.1, means 10% of table size. Allowed values are: from 0 to 100.

• vacuum_autovacuum_analyze_threshold | int

  Default: 50

  Sets the minimum number of inserted, updated or deleted tuples needed to trigger an ANALYZE in any one table. Allowed values are: from 0 to 2147483647.

• vacuum_autovacuum_freeze_max_age | int

  Default: 200000000

  Maximum age (in transactions) before triggering autovacuum on a table to prevent transaction ID wraparound. Allowed values are: from 100000 to 2000000000.

• vacuum_autovacuum_vacuum_cost_delay | float

  Default: 2.0

  Sets cost delay value (milliseconds) that will be used in automatic VACUUM operations. Allowed values are: from -1 to 100 (-1 tells PostgreSQL to use the regular vacuum_cost_delay value).

• vacuum_autovacuum_vacuum_scale_factor | float

  Default: 0.2

  Specifies a fraction of the table size to add to autovacuum_vacuum_threshold when deciding whether to trigger a VACUUM. The default, 0.2, means 20% of table size. Allowed values are: from 0 to 100.

• vacuum_vacuum_freeze_table_age | int

  Default: 150000000

  Age (in transactions) at which VACUUM should scan whole table to freeze tuples. Allowed values are: from 0 to 2000000000.