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38 lines
1.4 KiB
ReStructuredText
38 lines
1.4 KiB
ReStructuredText
.. include:: ../global.rst.inc
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.. _monitoring:
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Monitoring
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==========
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Monitoring endpoints are configured in the ``global.monitoring`` section of the config file.
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.. _monitoring-prometheus:
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Prometheus & Grafana
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--------------------
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zrepl can expose `Prometheus metrics <https://prometheus.io/docs/instrumenting/exposition_formats/>`_ via HTTP.
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The ``listen`` attribute is a `net.Listen <https://golang.org/pkg/net/#Listen>`_ string for tcp, e.g. ``:9811`` or ``127.0.0.1:9811`` (port 9811 was reserved to zrepl `on the official list <https://github.com/prometheus/prometheus/wiki/Default-port-allocations/_compare/43e495dd251ee328ac0d08b58084665b5c0f7a7e...459195059b55b414193ebeb80c5ba463d2606951>`_).
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The ``listen_freebind`` attribute is :ref:`explained here <listen-freebind-explanation>`.
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The Prometheus monitoring job appears in the ``zrepl control`` job list and may be specified **at most once**.
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zrepl also ships with an importable `Grafana <https://grafana.com>`_ dashboard that consumes the Prometheus metrics:
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see :repomasterlink:`dist/grafana`.
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The dashboard also contains some advice on which metrics are important to monitor.
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.. NOTE::
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At the time of writing, there is no stability guarantee on the exported metrics.
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::
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global:
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monitoring:
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- type: prometheus
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listen: ':9811'
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listen_freebind: true # optional, default false
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