2012-09-04 23:02:37 +00:00
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=======================
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Debugging and Logging
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=======================
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You may view Ceph log files under ``/var/log/ceph`` (the default location).
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Ceph is still on the leading edge, so you may encounter situations that require
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using Ceph's debugging and logging. To activate and configure Ceph's debug
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logging, refer to `Ceph Logging and Debugging`_. For additional logging
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settings, refer to the `Logging and Debugging Config Reference`_.
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2012-11-14 22:57:51 +00:00
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.. _Ceph Logging and Debugging: ../../configuration/ceph-conf#ceph-logging-and-debugging
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.. _Logging and Debugging Config Reference: ../../configuration/log-and-debug-ref
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2012-09-04 23:02:37 +00:00
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You can change the logging settings at runtime so that you don't have to
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stop and restart the cluster. Refer to `Ceph Configuration - Runtime Changes`_
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for additional details.
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Debugging may also require you to track down memory and threading issues.
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You can run a single daemon, a type of daemon, or the whole cluster with
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Valgrind. You should only use Valgrind when developing or debugging Ceph.
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Valgrind is computationally expensive, and will slow down your system otherwise.
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Valgrind messages are logged to ``stderr``.
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2012-11-14 22:57:51 +00:00
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.. _Ceph Configuration - Runtime Changes: ../../configuration/ceph-conf#ceph-runtime-config
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