chore: increase files per process and ulimit

Author: samrose

ansible/files/postgresql_config/postgresql.conf.j2

@@ -163,7 +163,7 @@ shared_buffers = 128MB			# min 128kB
 
 # - Kernel Resources -
 
-#max_files_per_process = 1000		# min 64
+max_files_per_process = 4096		# min 64
 					# (change requires restart)
 
 # - Cost-Based Vacuum Delay -

ansible/tasks/setup-postgres.yml

@@ -311,3 +311,11 @@
     - 'export LC_CTYPE="en_US.UTF-8"'
   become: yes
   when: nixpkg_mode
+
+- name: Postgres - bump up ulimit
+  community.general.pam_limits:
+    domain: postgres
+    limit_item: nofile
+    limit_type: soft
+    value: 4096
+  when: debpkg_mode or nixpkg_mode

ansible/vars.yml

@@ -8,8 +8,8 @@ postgres_major:
 
 # Full version strings for each major version
 postgres_release:
-  postgresorioledb-17: "17.0.1.31-orioledb"
-  postgres15: "15.8.1.035"
+  postgresorioledb-17: "17.0.1.31-orioledb-ulimit-1"
+  postgres15: "15.8.1.035-ulimit1"
 
 # Non Postgres Extensions
 pgbouncer_release: "1.19.0"