Consolidate the `drop` stanzas.

cookbooks/promtail/templates/etc/promtail/base.yaml

@@ -29,37 +29,12 @@ scrape_configs:
 
     pipeline_stages:
     - match:
-        selector: '{job="sudo"} |~ "/bin/sh"'
-        stages:
-        - drop:
-            expression: (CRON|sshd|session|securetty|systemd-logind)
-        - regex:
-            expression: '^(?P<timestamp>\w+ +[0-9]+ [0-9]+:[0-9]+:[0-9]+) [^ ]+ sudo: +(?P<user>[^ ]+) : TTY=(?P<tty>[^ ]+) ; PWD=(?P<pwd>[^ ]+) ; USER=(?P<foo>[^ ]+) ; COMMAND=(?P<cmd>.+)$'
-
-        - timestamp:
-            source: timestamp
-            format: Jan 2 15:04:05
-            location: Asia/Tokyo
-
-        - template:
-            source: message
-            template: 'USER={{ .user }} PWD={{ .pwd }} CMD={{ .cmd }}'
-
-        - template:
-            source: level
-            template: 'info'
-
-        - labels:
-            level:
-
-        - output:
-            source: message
+        selector: '{job="sudo"} |~ "(CRON|sshd|session|securetty|systemd-logind|/bin/sh)"'
+        action: drop
 
     - match:
         selector: '{job="sudo"} !~ "/bin/sh"'
         stages:
-        - drop:
-            expression: (CRON|sshd|session|securetty|systemd-logind)
         - regex:
             expression: '^(?P<timestamp>\w+ +[0-9]+ [0-9]+:[0-9]+:[0-9]+) [^ ]+ sudo: +(?P<user>[^ ]+) : TTY=(?P<tty>[^ ]+) ; PWD=(?P<pwd>[^ ]+) ; USER=(?P<foo>[^ ]+) ; COMMAND=(?P<cmd>.+)$'
 
@@ -93,13 +68,14 @@ scrape_configs:
         __path__: /var/log/auth.log
 
     pipeline_stages:
+    - match:
+        selector: '{job="sshd"} |~ "(CRON|sudo|session)"'
+        action: drop
+
     - match:
         selector: '{job="sshd"}'
 
         stages:
-        - drop:
-            expression: (CRON|sudo|session)
-
         - regex:
             expression: '^(?P<timestamp>\w+ +[0-9]+ [0-9]+:[0-9]+:[0-9]+) [^:]+: (?P<message>.+)$'