postgresql: configure max_connections

CHANGELOG.md

@@ -19,6 +19,7 @@ The **patch** part changes is incremented if multiple releases happen the same m
 * php: add a way to choose which version to install using sury repository
 * userlogrotate: create role separated from packweb-apache
 * postfix: Add task for enable mailgraph on packmail
+* postgresql: configure max_connections
 * apache: add tash for enable mailgraph on default vhost and index.html
 * php: add variables php_version when sury is activated for each Debian version
 * varnish: add variable varnish_update_config to disable configuration update

postgresql/defaults/main.yml

@@ -7,6 +7,7 @@ postgresql_shared_buffers: "{{ (ansible_memtotal_mb * 0.25) | int }}MB"
 postgresql_work_mem: 8MB
 postgresql_random_page_cost: 1.5
 postgresql_effective_cache_size: "{{ (ansible_memtotal_mb * 0.5) | int }}MB"
+postgresql_max_connections: None
 
 # Binding
 postgresql_listen_addresses:

postgresql/templates/postgresql.conf.j2

@@ -9,6 +9,9 @@ checkpoint_segments = 30
 {% else %}
 max_wal_size = 15GB
 {% endif %}
+{% if postgresql_max_connections and postgresql_max_connections | int > 0 %}
+max_connections = {{ postgresql_max_connections }}
+{% endif %}
 
 checkpoint_completion_target = 0.9
 random_page_cost = {{ postgresql_random_page_cost }}