alarms collector: ability to exclude certain alarms via config (#13701)

alarms collector: ability to exclude certain alarms via config

collectors/python.d.plugin/alarms/README.md

@@ -58,6 +58,9 @@ local:
   # a "," separated list of words you want to filter alarm names for. For example 'cpu,load' would filter for only
   # alarms with "cpu" or "load" in alarm name. Default includes all.
   alarm_contains_words: ''
+  # a "," separated list of words you want to exclude based on alarm name. For example 'cpu,load' would exclude 
+  # all alarms with "cpu" or "load" in alarm name. Default excludes None.
+  alarm_excludes_words: ''
 ```
 
 It will default to pulling all alarms at each time step from the Netdata rest api at `http://127.0.0.1:19999/api/v1/alarms?all`

collectors/python.d.plugin/alarms/alarms.chart.py

@@ -39,6 +39,7 @@ DEFAULT_URL = 'http://127.0.0.1:19999/api/v1/alarms?all'
 DEFAULT_COLLECT_ALARM_VALUES = False
 DEFAULT_ALARM_STATUS_CHART_TYPE = 'line'
 DEFAULT_ALARM_CONTAINS_WORDS = ''
+DEFAULT_ALARM_EXCLUDES_WORDS = ''
 
 class Service(UrlService):
     def __init__(self, configuration=None, name=None):
@@ -51,6 +52,8 @@ class Service(UrlService):
         self.collected_dims = {'alarms': set(), 'values': set()}
         self.alarm_contains_words = self.configuration.get('alarm_contains_words', DEFAULT_ALARM_CONTAINS_WORDS)
         self.alarm_contains_words_list = [alarm_contains_word.lstrip(' ').rstrip(' ') for alarm_contains_word in self.alarm_contains_words.split(',')]
+        self.alarm_excludes_words = self.configuration.get('alarm_excludes_words', DEFAULT_ALARM_EXCLUDES_WORDS)
+        self.alarm_excludes_words_list = [alarm_excludes_word.lstrip(' ').rstrip(' ') for alarm_excludes_word in self.alarm_excludes_words.split(',')]
 
     def _get_data(self):
         raw_data = self._get_raw_data()
@@ -62,6 +65,9 @@ class Service(UrlService):
         if self.alarm_contains_words != '':
             alarms = {alarm_name: alarms[alarm_name] for alarm_name in alarms for alarm_contains_word in
                       self.alarm_contains_words_list if alarm_contains_word in alarm_name}
+        if self.alarm_excludes_words != '':
+            alarms = {alarm_name: alarms[alarm_name] for alarm_name in alarms for alarm_excludes_word in
+                      self.alarm_excludes_words_list if alarm_excludes_word not in alarm_name}
 
         data = {a: self.sm[alarms[a]['status']] for a in alarms if alarms[a]['status'] in self.sm}
         self.update_charts('alarms', data)

collectors/python.d.plugin/alarms/alarms.conf

@@ -55,3 +55,6 @@ local:
   # a "," separated list of words you want to filter alarm names for. For example 'cpu,load' would filter for only
   # alarms with "cpu" or "load" in alarm name. Default includes all.
   alarm_contains_words: ''
+  # a "," separated list of words you want to exclude based on alarm name. For example 'cpu,load' would exclude 
+  # all alarms with "cpu" or "load" in alarm name. Default excludes None.
+  alarm_excludes_words: ''