patroni: add log settings

vitabaks#87

Author: vitabaks

roles/patroni/tasks/main.yml

@@ -250,6 +250,16 @@
   when: existing_pgcluster is not defined or not existing_pgcluster|bool
   tags: patroni, patroni_conf
 
+- name: Create patroni log directory
+  file:
+    path: "{{ patroni_log_dir }}"
+    owner: postgres
+    group: postgres
+    state: directory
+    mode: 0750
+  when: patroni_log_destination == 'logfile'
+  tags: patroni, patroni_conf
+
 - block:  # for add_pgnode.yml
     - name: Fetch patroni.yml conf file from master
       run_once: true

roles/patroni/templates/patroni.yml.j2

@@ -5,6 +5,21 @@ scope: {{ patroni_cluster_name }}
 name: {{ ansible_hostname }}
 namespace: /service/
 
+{% if patroni_log_destination == 'logfile' %}
+log:
+  level: {{ patroni_log_level |upper }}
+  traceback_level: {{ patroni_log_traceback_level |upper }}
+  format: {{ patroni_log_format |quote }}
+  dateformat: {{ patroni_log_dateformat |quote }}
+  max_queue_size: {{ patroni_log_max_queue_size |int }}
+  dir: {{ patroni_log_dir }}
+  file_num: {{ patroni_log_file_num |int }}
+  file_size: {{ patroni_log_file_size |int }}
+  loggers:
+    patroni.postmaster: {{ patroni_log_loggers_patroni_postmaster |upper }}
+    urllib3: {{ patroni_log_loggers_urllib3 |upper }}
+{% endif %}
+
 restapi:
   listen: {{ hostvars[inventory_hostname]['inventory_hostname'] }}:8008
   connect_address: {{ hostvars[inventory_hostname]['inventory_hostname'] }}:8008

vars/main.yml

@@ -210,6 +210,19 @@ patroni_retry_timeout: 10
 patroni_maximum_lag_on_failover: 1048576
 patroni_master_start_timeout: 300
 
+patroni_log_destination: stderr  # or 'logfile'
+# if patroni_log_destination: logfile
+patroni_log_dir: /var/log/patroni
+patroni_log_level: info
+patroni_log_traceback_level: error
+patroni_log_format: "%(asctime)s %(levelname)s: %(message)s"
+patroni_log_dateformat: ""
+patroni_log_max_queue_size: 1000
+patroni_log_file_num: 4
+patroni_log_file_size: 25000000  # bytes
+patroni_log_loggers_patroni_postmaster: warning
+patroni_log_loggers_urllib3: warning  # or 'debug'
+
 patroni_postgresql_use_pg_rewind: true  # or 'false'
 # try to use pg_rewind on the former leader when it joins cluster as a replica.