memcached/meta/prometheus.yml

{%- from "memcached/map.jinja" import server, monitoring with context %}
{%- if server.get('enabled', False) %}
server:
  alert:
{%- raw %}
    MemcachedServiceDown:
      if: >-
        memcached_up == 0
      labels:
        severity: minor
        service: memcached
      annotations:
        summary: "Memcached service is down"
        description: "The Memcached service on the {{ $labels.host }} node is down."
    MemcachedServiceRespawn:
      if: >-
{%- endraw %}
        memcached_uptime < {{ monitoring.service_respawn_seconds_treshold }}
{%- raw %}
      labels:
        severity: warning
        service: memcached
      annotations:
        summary: "Memcached is respawned"
        description: "The Memcached service on the {{ $labels.host }} node was respawned."
    MemcachedConnectionThrottled:
      if: >-
{%- endraw %}
        increase(memcached_conn_yields[1m]) > {{ monitoring.service_conn_yield_treshold }}
{%- raw %}
      for: 2m
      labels:
        severity: warning
        service: memcached
      annotations:
        summary: "{%- endraw %} {{ monitoring.service_conn_yield_treshold }}{%- raw %} throttled Memcached connections"
        description: "An average of {{ $value }} client connections to the Memcached database on the {{ $labels.host }} node throttle for 2 minutes."
    MemcachedConnectionsNoneMinor:
      if: >-
        memcached_curr_connections == 0
      labels:
        severity: minor
        service: memcached
      annotations:
        summary: "Memcached has no open connections"
        description: "The Memcached database on the {{ $labels.host }} node has no open connections."
    MemcachedConnectionsNoneMajor:
      if: >-
        count(memcached_curr_connections == 0) == count(memcached_up)
      labels:
        severity: major
        service: memcached
      annotations:
        summary: "Memcached has no open connections on all nodes"
        description: "The Memcached database has no open connections on all nodes."
    MemcachedItemsNoneMinor:
      if: >-
        memcached_curr_items == 0
      labels:
        severity: minor
        service: memcached
      annotations:
        summary: "Memcached database is empty"
        description: "The Memcached database on the {{ $labels.host }} node is empty."
    MemcachedEvictionsLimit:
{%- endraw %}
      if: >-
        increase(memcached_evictions[1m]) > {{ monitoring.service_evictions_threshold }}
{%- raw %}
      labels:
        severity: warning
        service: memcached
      annotations:
        summary: "{%- endraw %}{{ monitoring.service_evictions_threshold }}{%- raw %} Memcached evictions"
        description: "An average of {{ $value }} evictions in the Memcached database occurred on the {{ $labels.host }} node during the last minute."
{%- endraw %}
{%- endif %}