WPB-22132: Optmize pg cluster for production load and scrape metrics #832
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sghosh23
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This PR adds PostgreSQL monitoring via postgres_exporter and fixes connection pool exhaustion issues by increasing max_connections. Changes: - Add postgres_exporter v0.18.1 deployment playbook with offline support - Enable collectors: postmaster, stat_statements, stat_checkpointer (PG17) - Update libpq5 to 18.1-1 (from PG18, backwards compatible with PG17) - Increase max_connections from 20 to 100 to fix hasql-pool timeouts - Adjust memory: shared_buffers 256MB→512MB, work_mem 2MB→512kB - Add localhost authentication for postgres_exporter (.pgpass, pg_hba.conf) - Update worker processes for better parallelism Fixes: - hasql-pool AcquisitionTimeoutUsageError from wire-server services - PostgreSQL 17 checkpoint metrics via stat_checkpointer collector - postgres_exporter authentication issues
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This PR adds PostgreSQL monitoring via postgres_exporter and fixes
connection pool exhaustion issues by increasing max_connections.
Changes:
Fixes:
Change type
Basic information
Testing
Tracking
changelog.dKnowledge Transfer
Motivation
Objective
Reason
Use case