Alertmanager Match vs Match_re

Question

match:
  [ <labelname>: <labelvalue>, ... ]

# A set of regex-matchers an alert has to fulfill to match the node.
match_re:
  [ <labelname>: <regex>, ... ]

My question is what is the difference between a match and a match_re statement? I have used both of the within prometheus and the effect they have is the same.

Any help is very much appreciated!!

score 9 · Answer 1 · answered Apr 24 '20 at 12:18

9

With "match_re" you can use regular expression like in the following examples:

service: "mysql|postgre"

system: ".*_(foo|boo)$"

recipient: "(.*,)?customer/sms(,.*)?"

alertname: "watchdog.*alert"

answered Apr 24 '20 at 12:18

Marcelo Ávila de Oliveira

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can we use both `match` and `match_re` for a receiver? – Underoos Apr 21 '21 at 07:56
Yes, you can use it. – Marcelo Ávila de Oliveira Apr 21 '21 at 20:29

score 7 · Answer 2 · answered Jun 29 '21 at 12:30

From the v0.22.2 both match and match_re are deprecated in favor of matchers. A nice new feature is the possibility to define negative matchers.

# DEPRECATED: Use matchers below.
# A set of equality matchers an alert has to fulfill to match the node.
match:
  [ <labelname>: <labelvalue>, ... ]

# DEPRECATED: Use matchers below.
# A set of regex-matchers an alert has to fulfill to match the node.
match_re:
  [ <labelname>: <regex>, ... ]
  
# A list of matchers that an alert has to fulfill to match the node. 
matchers:
  [ - <matcher> ... ]

Source

score 4 · Answer 3 · answered Jul 17 '22 at 08:55

4

Use matchers instead of them:

  routes:
  - receiver: 'database-pager'
    group_wait: 10s
    matchers:
    - service=~"mysql|cassandra"
  - receiver: 'frontend-pager'
    group_by: [product, environment]
    matchers:
    - team="frontend"

In newer versions match and match_re are deprecated in favor of matchers.

answered Jul 17 '22 at 08:55

Milad Jahandideh

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`matchers` was introduced in v 0.22. If the reader is using something older than that, they'll still need to use `match` & `match_re`. – Dale C. Anderson Aug 29 '22 at 17:31

Alertmanager Match vs Match_re

3 Answers3