Merge "Parse MariaDB log messages in different formats into Fluentd"

ansible/roles/common/tasks/config.yml

@@ -235,6 +235,8 @@
       dest: 00-record_transformer
     - src: "{{ '01-rewrite-0.14' if fluentd_version == '0.14' else '01-rewrite-0.12' }}"
       dest: 01-rewrite
+    - src: 02-parser
+      dest: 02-parser
   when:
     - enable_fluentd | bool
     - item.src ~ '.conf' not in customised_filter_files

ansible/roles/common/templates/conf/filter/01-rewrite-0.12.conf.j2

@@ -37,3 +37,10 @@
     rewriterule34 programname ^(monasca-api|monasca-notification|monasca-persister|agent-collector|agent-forwarder|agent-statsd)$ openstack_python
     rewriterule35 programname .+ unmatched
 </match>
+
+# Retag log messages from MariaDB according to log format
+<match infra.mariadb>
+    @type rewrite_tag_filter
+    rewriterule1 Payload ^\d{6} infra.mariadb.mysqld_safe
+    rewriterule2 Payload ^\d{4}-\d{2}-\d{2} infra.mariadb.mysqld
+</match>

ansible/roles/common/templates/conf/filter/01-rewrite-0.14.conf.j2

@@ -187,3 +187,18 @@
     tag unmatched
   </rule>
 </match>
+
+# Retag log messages from MariaDB according to log format
+<match infra.mariadb>
+  @type rewrite_tag_filter
+  <rule>
+    key Payload
+    pattern /^\d{6}/
+    tag infra.mariadb.mysqld_safe
+  </rule>
+  <rule>
+    key Payload
+    pattern /^\d{4}-\d{2}-\d{2}/
+    tag infra.mariadb.mysqld
+  </rule>
+</match>

ansible/roles/common/templates/conf/filter/02-parser.conf.j2

@@ -0,0 +1,27 @@
+# Parse MariaDB logs with 6 digit date format (mysqld_safe)
+<filter infra.mariadb.mysqld_safe>
+    @type parser
+    format /^(?<Timestamp>\d{6} {1,2}\d{1,2}:\d{1,2}:\d{1,2}) +(?<Payload>mysqld_safe .*)/
+    time_format %y%m%d %k:%M:%S
+    time_key Timestamp
+    key_name Payload
+    reserve_data true
+</filter>
+
+# Parse MariaDB logs with 8 digit date format (mysqld)
+<filter infra.mariadb.mysqld>
+    @type parser
+    format /^(?<Timestamp>\d{4}-\d{2}-\d{2} {1,2}\d{1,2}:\d{1,2}:\d{1,2}) +(?<Payload>\w+ +(\[(?<log_level>\w+)\]|\w+: +(?<log_level>\w+):).*)/
+    time_format %Y-%m-%d %k:%M:%S
+    time_key Timestamp
+    key_name Payload
+    reserve_data true
+</filter>
+
+# Re-add timestamp record now that the log date has been parsed
+<filter infra.mariadb.*>
+  @type record_transformer
+  <record>
+    timestamp ${time}
+  </record>
+</filter>

ansible/roles/common/templates/conf/input/02-mariadb.conf.j2

@@ -1,11 +1,12 @@
+# mysqld and its wrapper script mysqld_safe output logs using a different timestamp.
+# Defer parsing the logs until the different formats have been retagged.
 <source>
   @type tail
   path /var/log/kolla/mariadb/mariadb.log
   pos_file /var/run/{{ fluentd_binary }}/mariadb.pos
   tag infra.mariadb
   format multiline
-  format_firstline /^\d{6}/
+  format_firstline /^(\d{4}-\d{2}-\d{2}|\d{6}) /
-  format1 /^(?<time>\d{6} \d{1,2}:\d{1,2}:\d{1,2}) (\[(?<log_level>\S+)\]|mysqld_safe) (?<Payload>.*)/
+  format1 /^(?<Payload>.*)/
-  time_format %y%m%d %k:%M:%S
   enable_watch_timer false
 </source>