Add logrotate for PostgreSQL

CHANGELOG-0.5.md

@@ -7,6 +7,11 @@
 - PostgreSQL: PGBouncer implementation [#854](https://github.com/epiphany-platform/epiphany/issues/854)
 - PostgreSQL: pgAudit extension for audit logging [#905](https://github.com/epiphany-platform/epiphany/pull/905)
 - PostgreSQL: Send logs to Elasticsearch
+- PostgreSQL: Add logrotate configuration [#915](https://github.com/epiphany-platform/epiphany/pull/915)
+
+### Fixed
+
+- Open Distro for Elasticsearch: Task 'Install Elasticsearch package' fails [#906](https://github.com/epiphany-platform/epiphany/issues/906)
 
 ## [0.5.1] 2020-01-23
 

core/src/epicli/data/common/ansible/playbooks/roles/filebeat/templates/filebeat.yml.j2

@@ -79,6 +79,7 @@ filebeat.inputs:
   enabled: true
   paths:
     - /var/log/postgresql/*.log*
+  exclude_files: [".gz$"]
   multiline:
     pattern: '^\d{4}-\d{2}-\d{2} '
     negate: true

core/src/epicli/data/common/ansible/playbooks/roles/postgresql/tasks/configure-postgresql.yml

@@ -107,6 +107,23 @@
      or change_postgresql_epiphany_conf
      or change_postgresql_conf
 
+- name: Configure logrotate
+  block:
+    - name: Remove logrotate configuration provided by 'postgresql-common' package
+      file:
+        path: /etc/logrotate.d/postgresql-common
+        state: absent
+      when: ansible_os_family == 'Debian'
+    - name: Create logrotate configuration file
+      template:
+        src: logrotate.conf.j2
+        dest: /etc/logrotate.d/postgresql
+        owner: root
+        group: root
+        mode: 0644
+  when:
+    - specification.logrotate.config is defined
+
 - name: Set up replication
   include_tasks: replication-{{ ansible_os_family }}.yml
   # 'specification.replication.enable' is for backward compatibility

core/src/epicli/data/common/ansible/playbooks/roles/postgresql/templates/logrotate.conf.j2

@@ -0,0 +1,3 @@
+# {{ ansible_managed }}
+
+{{ specification.logrotate.config }}

core/src/epicli/data/common/defaults/configuration/postgresql.yml

@@ -31,7 +31,10 @@ specification:
             parameters:
               - name: log_directory
                 value: "'/var/log/postgresql'"
-                comment: to have standard location for Filebeat
+                comment: to have standard location for Filebeat and logrotate
+              - name: log_filename
+                value: "'postgresql.log'"
+                comment: to use logrotate with common configuration
   additional_components:
     pgbouncer:
       enabled: no
@@ -54,3 +57,28 @@ specification:
         pgaudit.log_relation: 'on # separate log entry for each relation' # default is 'off'
         pgaudit.log_statement_once: 'off' # same as default
         pgaudit.log_parameter: 'on' # default is 'off'
+  logrotate:
+    # Configuration partly based on /etc/logrotate.d/postgresql-common provided by 'postgresql-common' package from Ubuntu repo.
+      # PostgreSQL from Ubuntu repo:
+        # By default 'logging_collector' is disabled, so 'log_directory' parameter is ignored.
+        # Default log path is /var/log/postgresql/postgresql-$version-$cluster.log.
+      # PostgreSQL from SCL repo (RHEL):
+        # By default 'logging_collector' is enabled and there is up to 7 files named 'daily' (e.g. postgresql-Wed.log)
+        # and thus they can be overwritten by built-in log facility to provide rotation.
+    # To have similar configuration for both distros (with logrotate), 'log_filename' parameter is modified.
+    config: |-
+      /var/log/postgresql/postgresql*.log {
+          maxsize 10M
+          daily
+          rotate 6
+          copytruncate
+      # delaycompress is for Filebeat
+          delaycompress
+          compress
+          notifempty
+          missingok
+          su root root
+          nomail
+      # to have multiple unique filenames per day when dateext option is set
+          dateformat -%Y%m%d-%s
+      }