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https://github.com/ceph/ceph
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104 lines
2.6 KiB
ReStructuredText
104 lines
2.6 KiB
ReStructuredText
Crash Module
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============
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The crash module collects information about daemon crashdumps and stores
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it in the Ceph cluster for later analysis.
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Enabling
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--------
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The *crash* module is enabled with::
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ceph mgr module enable crash
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The *crash* upload key is generated with::
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ceph auth get-or-create client.crash mon 'profile crash' mgr 'profile crash'
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On each node, you should store this key in
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``/etc/ceph/ceph.client.crash.keyring``.
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Automated collection
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--------------------
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Daemon crashdumps are dumped in ``/var/lib/ceph/crash`` by default; this can
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be configured with the option 'crash dir'. Crash directories are named by
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time and date and a randomly-generated UUID, and contain a metadata file
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'meta' and a recent log file, with a "crash_id" that is the same.
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These crashes can be automatically submitted and persisted in the monitors'
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storage by using ``ceph-crash.service``.
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It watches the crashdump directory and uploads them with ``ceph crash post``.
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``ceph-crash`` tries some authentication names: ``client.crash.$hostname``,
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``client.crash`` and ``client.admin``.
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In order to successfully upload with ``ceph crash post``, these need
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the suitable permissions: ``mon profile crash`` and ``mgr profile crash``
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and a keyring needs to be in ``/etc/ceph``.
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Commands
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--------
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::
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ceph crash post -i <metafile>
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Save a crash dump. The metadata file is a JSON blob stored in the crash
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dir as ``meta``. As usual, the ceph command can be invoked with ``-i -``,
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and will read from stdin.
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::
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ceph crash rm <crashid>
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Remove a specific crash dump.
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::
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ceph crash ls
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List the timestamp/uuid crashids for all new and archived crash info.
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::
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ceph crash ls-new
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List the timestamp/uuid crashids for all newcrash info.
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::
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ceph crash stat
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Show a summary of saved crash info grouped by age.
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::
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ceph crash info <crashid>
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Show all details of a saved crash.
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::
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ceph crash prune <keep>
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Remove saved crashes older than 'keep' days. <keep> must be an integer.
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::
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ceph crash archive <crashid>
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Archive a crash report so that it is no longer considered for the ``RECENT_CRASH`` health check and does not appear in the ``crash ls-new`` output (it will still appear in the ``crash ls`` output).
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::
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ceph crash archive-all
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Archive all new crash reports.
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Options
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-------
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* ``mgr/crash/warn_recent_interval`` [default: 2 weeks] controls what constitutes "recent" for the purposes of raising the ``RECENT_CRASH`` health warning.
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* ``mgr/crash/retain_interval`` [default: 1 year] controls how long crash reports are retained by the cluster before they are automatically purged.
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