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Add metrics (#2199)

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This PR adds metrics for additional information : 
  - If a node or cluster is pending restart,
  - If the cluster management is paused. 

This may be useful for Prometheus/Grafana monitoring.
Close #2198
This commit is contained in:
Alexandre Pereira
2022-02-10 15:37:14 +01:00
committed by GitHub
parent 291754eeb0
commit afab392ead
1 changed files with 10 additions and 0 deletions
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patroni/api.py
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@@ -293,6 +293,16 @@ class RestApiHandler(BaseHTTPRequestHandler):
metrics.append("# TYPE patroni_dcs_last_seen gauge")
metrics.append("patroni_dcs_last_seen{0} {1}".format(scope_label, postgres.get('dcs_last_seen', 0)))
metrics.append("# HELP patroni_pending_restart Value is 1 if the node needs a restart, 0 otherwise.")
metrics.append("# TYPE patroni_pending_restart gauge")
metrics.append("patroni_pending_restart{0} {1}"
.format(scope_label, int(patroni.postgresql.pending_restart)))
metrics.append("# HELP patroni_is_paused Value is 1 if auto failover is disabled, 0 otherwise.")
metrics.append("# TYPE patroni_is_paused gauge")
metrics.append("patroni_is_paused{0} {1}"
.format(scope_label, int(patroni.ha.is_paused())))
self._write_response(200, '\n'.join(metrics)+'\n', content_type='text/plain')
def _read_json_content(self, body_is_optional=False):